Instruction Sheet 660-505

S8C Remote Supervisory Pad-Mounted Gear Outdoor Distribution (14.4 kv and 25 kv)

Communication and Control Equipment Group-DART Configuration System Software Version 2.02 or Higher

INSTRUCTIONS For Configuration, Operation, and Maintenance

For instructions on configuring the optional communication processor module (CPM), refer to S&C Instruction Sheet 660-510. For instructions on operation of Type PM Switch Operators, or manually operated switches and fusing, refer to the applicable S&C instruction sheet.

I TABLE OF CONTENTS I

Section Page Number INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 USER CONNECTIONS TO THE COMMLXICATION AND CONTROL EQUIPMENT GROCP . . . . . . . . . . . . . . . .5

SETTING DART RTU ADDRESS AND SELECTING MODEM OPERATION . . . . . . . . . . . . . . . . . . 6

CONFIGURING THE DART RTU Installing and Runnlng the Configuration System . . . . . . . .9 Speclfylng the Configuration File Directory . . . . . . . . . . .10 Speclfylng the DNP Version . . . . . . . . . . . . . . . . . . . . .10 Creating a New Configuration . . . . . . . . . . . . . . . . . . . .10 Uploading and Updating a Configuration . . . . . . . . . . . . . 11 Speclfying the Communlcatron Parameters . . . . . . . . . . . 11 Speclfying the Status Inputs . . . . . . . . . . . . . . . . . . . . .12 Speclfying the Control Outputs . . . . . . . . . . . . . . . . . . .13 Specifying the Analog Inputs . . . . . . . . . . . . . . . . . . . .13 Speclfylng the Fault Detectors . . . . . . . . . . . . . . . . . . .16 Generating a Configuration File . . . . . . . . . . . . . . . . . .19 Downloading a DART Configuration . . . . . . . . . . . . . . . .20

CONFIGURING THE COMMUNICATION Section Page Number

PROCESSOR MODULE . . . . . . . . . . . . . . . . . . . . . . . .20 TESTING THE COMMUNICATION AND CONTROL

EQUIPMENTGROUP . . . . . . . . . . . . . . . . . . . . . . . . . 21

PLACING THE COMMUNICATION AND CONTROL EQUIPMENT GROUP INTO OPERATION . . . . . . . . . . . . .22

MAINTENANCE Charging the Battery Packs . . . . . . . . . . . . . . . . . . . . .23 Battery Pack Replacement . . . . . . . . . . . . . . . . . . . . . .24

Communication and Control Equipment APPENDIX A

Group Optional Features and Accessories . . . . . . . . . . .25

DART and CPM Modem Signal Lines . . . . . . . . . . . . . . . .27

DART Maintenance and Test Cables . . . . . . . . . . . . . . . .28

APPENDlX B

APPENDIX C

APPENDIX D Sensor Scaling Factors . . . . . . . . . . . . . . . . . . . . . . . .29 Raw Count Conversion . . . . . . . . . . . . . . . . . . . . . . . .29

INTRODUCTION I

The equipment covered by this publication must be operated and maintained by qualified persons who are thoroughly trained and who understand any hazards that may be involved. This publication is written only for such qualified persons and is not intended to be a substitute for adequate training and experience in safety procedures for this type of equipment.

Supersedes lnstructlon Sheet 660-505 dated 10-26-92 @1994

INSTRUCTION SHEET 660405 S&C ELECTRIC COMPANY Chicago Page 1 of 29 S&C ELECTRIC CANADA LTD. Toronto January 24,1994

S&C Remote Supervisory Pad-Mounted Gear Equipment Group-DART Outdoor Distribution (14.4 kv and 25 kv) Communication and Control

Configuration System Software Version 2.02 or Higher

I INTRODUCTION - Continued I

S&C Remote Supervisory Pad-Mounted Gear is provided with comprehensive access controls and operating features to minimize hazards. Access to the interior of the pad-mounted gear, switch operators, and low- voltage compartment is controlled by the S&C Penta- Latch Mechanism, which requires a pentahead socket wrench for opening except when hexhead actuators (Catalog Number Suffix “-B1” or “-B2”) are specified. Since the gear contains high voltage, there are hazards inherently present such that the following precautions should be observed at all times. Failure to observe these precautions may result in serious injury or death. 1. High-voltage compartment doors, switch operator

doors, and the low-voltage compartment door must be securely closed and latched, with padlocks in place at all times unless work is being performed inside the enclosures. Manual Mini-Ruptere Switches have switch-operating-shaft access covers located on the sides of the pad-mounted gear enclosure. They must be closed and padlocked at all times unless the switches are being operated.

2. Optional key interlocks, iffurnished, must be in place. Check the operating sequence of key interlocks to verlfy proper sequencing. After the pad-mounted gear is installed, destroy all duplicate keys or make them accessible only to authorized persons so that the key-interlock scheme will not be compromised. Key interlocks are not security locks and are not substitutes for padlocks.

3. Do not apply any undue force when attempting to open a door. The use of undue force may damage the door-latching mechanism. If optional key interlocks are provided, make certain that the interlocks are in their correct positions to allow door opening.

4. Do not remove or obscure any of the “CAUTION,” “DANGER,” or other precautionary signs and labels.

5. Use suitable protective equipment such as rubber gloves, rubber mats, hard hats, safety glasses, and flash clothing in accordance with standard system-operating procedures, especially when handling fuses and barriers within high-voltage compartments.

6. Make certain that the pad-mounted gear enclosure is properly grounded.

7. Make certain that fuses are disconnected from all power sources (including backfeed) before being inspected or replaced.

8. Always confirm the open/close position of Mini- Rupter Switches by visually observing the position of the switch blades.

9. Test for voltage using proper high-voltage test equipment before touching any device that is to be inspected, serviced, or repaired in the high- voltage compartments.

10. Install suitable grounding equipment before touching any device that is to be inspected, serviced, or repaired in the high-voltage compartment,s.

11. Always assume that both terminals of any switch or fuse are energized unless proved otherwise by test, by visual evidence of open circuit conditions on both terminals, or by observing that both terminals are grounded.

These recommendations may differ from the user’s operating and safety procedures. Where such discrepancy exists, users should follow their operating procedures.

S&C Pad-Mounted Gear is provided with an “Instal- lation and Operation Information Kit” containing instructions sheets, drawings, and wiring diagrams applicable to the equipment provided. All personnel involved with the installation and operation of the equipment should be thoroughly familiar with the contents of the information kit.

The following instructions cover operation of the communication and control equipment group installed in S&C Remote Supervisory PMH and PME Pad-Mounted Gear. Inclusion of the communication and control

equipment group is denoted by the addition of the suffix “-Y1” to the pad-mounted gear catalog number. The equipment group contains a WESDACB DART (Distri- bution Automation Remote Terminal) by Harris Controls, which allows monitoring and operation of the gear by a master-station computer through a landline communication channel or transceiver. Type PM Switch Operators mounted on the gear permit power-operated switching of the Mini-Rupter Switches in response to opening and closing signals from a remote location.

660.1505 INSTRUCTION SHEET Page 2 of 29 S&C ELECTRIC COMPANY 0 Chicago January 24,1994 S&C ELECTRIC CANADA LTD. Toronto

I INTRODUCTION - Continued I Mounting provisions are furnished within the low- voltage compartment for a 400-Mhz or 900-Mhz Microwave Data Systems (MDS) transceiver (MDS-4310 or MDS-2310) or a Motorola transceiver (DARCOM 9000@), for communication with the master-station computer. The MDS transceiver is optionally available with the equipment group; see “OPTIONAL FEATURES” table in Appendix A.

Control power for the equipment group, as well as t,he switch operators and optional transceiver, is derived from a battery and battery charger. An S&C Voltage Sensor furnished with the equipment group supplies the 120-volt ac input power required by the battery charger and also provides single-phase monitoring of system line voltage for direct analog input to the WESDAC DART. Three-phase monitoring of the system line voltage is available as an option (Catalog Number Suffix “-Wl”). Three user-installed split-core current sensors rated 6005 amperes, furnished for each power-operated switch, provide three-phase monitoring of system line current for direct analog input to the WESDAC DART.

The WESDAC DART includes the following features: Provisions for direct ac analog input connections from voltage and current sensors. In S&C Remote Supervisory Pad-Mounted Gear, the WESDAC DART features twelve analog inputs (three voltage and nine current), sixteen status (digital) inputs, and eight discrete Form C control outputs (i.e., four trip-close pairs), except for PMH-3, PMH-5, and PME-5 Models which have six analog inputs (three current and three voltage). DART Configuration System Software is furnished on a 3.5-inch diskette. Operation under Harris Controls’ standard DNP communication protocol, which permits immediate application where this protocol is employed. A large number of other commonly used communication protocols can be accommodated with the optional communication processor module (CPM). When this

option is provided (Catalog Number Suffix “-Vl”), three additional 3.5-inch diskettes are furnished- two which provide the D20/CPM Configuration System Software and one which provides the CPM Application Configuration Files. The WESDAC DART features a unique means of detecting faults occurring on the load side of the switches in the pad-mounted gear. This fault detect,ion technique determines the faulted phase or phases whether the source-side protective device clearing the fault successfully reclosed or operated to lockout. This technique is inherently more reliable than simple magnitude-only fault detectors, which are prone to misoperation from transformer magnetizing-inrush current or reverse current flow (backfeed). Pickup settings (magnitude and dura- tion) for both phase faults and ground faults are independently field selectable.

0 A Bell 202/CCIlT V.23 compatible, 1200-bps asynchronous modem that provides 2-wire half-duplex or 4-wire full-duplex data exchange with the master station. The modem can be connected directly to a landline communication channel or, alternately, to a transceiver.

0 RS-232 data port to permit direct digital transmission of data at either 4800 or 9600 bps for use when the transceiver is furnished with a digital interface. The catalog number stamped on the nameplate

affixed to the outside of the doors of the pad-mounted gear is suffixed with letter-number combinations. These sufflxes designate the inclusion of optional features, such as three-phase voltage sensing (Catalog Number Suffix “-Wl”). Refer to Appendix A for a listing of the available options for the communication and control equipment group. For a complete listing of the available options for the pad-mounted gear, see the applicable S&C instruction sheet.

Figure 1 illustrates the components of the communi- with these components and their locations within the cation and control equipment group. It is recommended low-voltage compartment and switch operator. that this figure be reviewed to gain familiarity

INSTRUCTION SHEET 660-505 S&C ELECTRIC COMPANY Chicago Page 3 of 29 S&C ELECTRIC CANADA LTD. Toronto January 24,1994

S&C Remote Supervisory Pad-Mounted GearOutdoor Distribution (14.4 kv and 25 kv)

Communication and ControlEquipment Group-DARTConfiguration System SoftwareVersion 2.02 or Higher

Optional Microwave Data Systems transceiver(Catalog Number Suffixes “-Tl” through “-T16”)

Low,-Voltage Cowith DART RTU

lmpartment

antenna surge suppressor(Included withCatalog Number OperationSuffixes “-Tl” counterthrough “-T16”)

Open/closepushbuttons

\

Type PM SwitchOperator

Local/remoteswitch

Switch control

/Battery packs

Figure 1. Components of the communication and control equipment group.

66(jm505 INSTRUCTION SHEETPage 4 of 29January 24,1994

S&C ELECTRIC COMPANY l ChicagoS&C ELECTRIC CANADA LTD. l Toronto

USER CONNECTIONS TO THE COMMUNICATION AND CONTROL EQUIPMENT GROUP I If an optional Microwave Data Systems’ transceiver is supplied with the communication and control equipment group (Catalog Number Suffixes “-T1” through “-T16”), all interconnection wiring is done at the factory and the equipment is ready for connection to a user- supplied antenna. Proceed to “Connecting an Antenna” below.

Connecting a Landline Interface Remove the conduit entrance plate from the bottom of the low-voltage compartment and prepare aweather- tight entrance in accordance with utility practice. Then, using a cable equipped with an RJ-11” connector, connect the landline to the “DART MODEM” or “CPM MODEM.” See Figure 2. For a description of modem signal lines, refer to Appendix B. The cable and connectors are to be furnished by others.

Installing and Connecting a User-Supplied Radio Mounting provisions are provided inside the low- voltage compartment for either a Microwave Data Systems' MDS-2310 or MDS-4310 transceiver or a Motorola DARCOM 9000 transceiver. See Figure 1. Install the user-supplied transceiver using appropriate mounting hardware (not furnished), according to the instructions supplied by the manufacturer. All wiring between a user-supplied radio and the DART RTU is to be provided by others.

If the radio is not supplied with a digital interface: Using a cable equipped with an RJ-11” connector, connect the communication port on the radio to the “DART MODEM” or “CPM MODEM.” See Figure 2. For a description of modem signal lines, refer to Appendix B.

I f the radio is supplied with a digital interface: Using a cable equipped with an RS-232 DB-9-M connector, connect the communication port on the radio to the “DART COMMUNICATION PORT“ or “CPM COMMUNI- CATION PORT.” See Figure 2. For a description of the communication port signal lines, refer to Appendix C.

A wire harness is furnished to provide power to the transceiver. The harness includes a rectangular power connector for use with an MDS transceiver. If a Motorola DARCOM 9000 transceiver is used, remove the power connector from the harness and terminate Wires “18” and “19” with a connector suitable for use with this radio. Refer to the instructions supplied by Motorola. Note: Wire “18” is connected to the +12-volt terminal of the battery charger.

Connecting an Antenna I f the radio is supplied by S&C: When an optional MDS transceiver is supplied with the equipment group, a Poly-Phasor IS-B50HN antenna surge suppressor is included, as shown in Figure 1. Remove the conduit entrance plate from the bottom of the low-voltage compartment and prepare a weathertight entrance in accordance with utility practice for the coaxial feedline (not furnished) from the antenna. Route the coaxial feedline through the weathertight entrance and attach it to the female Type N connector on the surge suppressor.

If the radio is supplied by others: Remove the conduit entrance plate from the bottom of the low-voltage compartment and prepare a weathertight entrance in accordance with utility practice. Then install the appropriate wiring, connectors, and antenna surge suppressor (all supplied by others).

fl When the radio is supplied by others, the use of a surge suppressor between the antenna and the radio is recommended in order to prevent lightning surges from damaging the electronic components inside the low-voltage compartment. Contact the radio manufacturer for recommended surge suppressors.


S&C Remote Supervisory Pad-Mounted Gear Communication and Control Outdoor Distribution (14.4 kv and 25 kv) I Equipment Group-DART


SETTING DART RTU ADDRESS AND SELECTING MODEM OPERATION 1 Step 1 cable connects the DART Modem to the inside of the

After noting the location of the various communication DART cover. Carefully remove this cable as well, and cables attached to the top of the DART RTU, carefully set the cover aside. If the optional communication mark and remove them. Then loosen the four captive processor module (CPM) is furnished (Catalog Number knurled slot-head screws holding the DART cover in Suf f i “-Vl”), it is mounted on the inside of the DART place. See Figure 2. Note: An additional communication cover; the DART Modem noted above is not provided.

Captive knurled slot-head screws (4) \

) nn,-, n

\ / \

i Viewing window for )

DART microprocessor LED status indicator < (See Flgure 4)

L

+-Viewing window for CPM LED status indicators (See Flgure 5)

\

igure 2. x ‘“Vl”).

Cover detail of DART RTU furnished with optional communication processor module (Catalog Cover detail is similar when DART RTU is not furnished with communication processor module.

Number

-

Suf-

Gee505 INSTRUCTION SHEET Page 6 of 29 S&C ELECTRIC COMPANY Chicago January 24,1994 S&C ELECTRIC CANADA LTD. Toronto

1 SETTING DART RTU ADDRESS AND SELECTING MODEM OPERATION - Continued I Setting the DART RTU Address If the optional communication processor module (CPM) is furnished (Catalog Number Suffix “-Vl”), the DART RTU address has been factory-set to FFFF (all jumpers in place). The CPM address will need to be set, however, as discussed in the “CONFIGURING THE COMMUNICATION PROCESSOR MODULE” section on page 20. Proceed to “Selecting Modem Operation,” below. If the optional communication processor module (CPM) is not furnished, proceed as follows.

Step 2 Locate jumper blocks Z l and 22 in the lower right- hand corner of the DART RTU circuit board. See Figure 3.

Step 3 To set the DART address, r m e jumpers from the appropriate pins on jumper blocks Z1 and 22. The presence of a jumper represents a binary 1, and the absence of a jumper represents a binary 0. See Table 1. For your convenience in making this setting, the DART RTU is shipped with jumpers present in all positions. Hence, the binary address 11 11 11 11 11 11 11 11, which corresponds to a decimal address of 65,53510 is the default address.

Jumper block 22 r Jumper block Z1

/ \ DART RTU I

Figure 3. Location of DART RTU address jumper blocks 21 and 22.

TABLE 1-Binary Weighting of Jumpers 21 and 22

Jumper Block@

21 I 22

1-16 2-15 3-14 4-13 5-12 6-1 1 7-10

20 2’ 22 23 24 26 26

1-16 2-15 3-14 4-13 5-12 6-1 1 7-10

I 8-9 27 I 1 I 8-9 2’5 @ The DARTRTU address is two bytes long; Z1 contains the least significant byte and 22 contams the most significant byte.

Example: To set a DART RTU address of 0101010101010101, which represents a decimal number of 21,84510, set jumper blocks Z1 and 22 as shown in Table 2.

TABLE 2-Jumper Positions Required to Set DART RTU Address to 21.845,,

I Jumper Block I

Jumper Position

1-16

3-14

5-12 6-1 1 7-10 8-9

2-15

4-13

21

Yes No

Position Jumper

1-16

3-14 4-13 5-12 6-1 1 7-10 8-9

2-15

22

No 0 Yes 1 No 0 Yes 1 No 0

Selecting Modem Operation If the CPM is furnished, communication functions are performed by the CPM modem. Proceed to Step 6.

If the CPM is not furnished, the DART RTU includes a 1200-bps Bell 202/CCITT V.23 compatible modem for communicating with the master station computer through external communications devices such as leased telephone circuits, fiber-optic cables, or transceivers. The DART Modem is designed for multi- drop applications and either 2-wire half-duplex or 4-wire full-duplex operation.

INSTRUCTION SHEET 660-505 S&C ELECTRIC COMPANY 0 Chicago Page 7 of 29 S&C ELECTRIC CANADA LTD. Toronto January 24,1994

S&C Remote Supervisory Pad-Mounted Gear Outdoor Distribution (14.4 kv and 25 kv)


I SETTING DART RTU ADDRESS AND SELECTING MODEM OPERATION - Continued I step 4

Locate jumper blocks 21, 22, and 23 on the DART Modem circuit board, which is mounted directly to the DART RTU circuit board. See Figure 4.

Step 5 Select modem operation by placing a jumper between pins 1 and 2 or between pins 2 and 3 of jumper blocks Zl,Z2, and 23 as shown in Table 3. Proceed to Step 8.

TABLE 3-Selecting DART Modem Operation

Jumper Block 21 I 22 I 23

1 and 2

I I 2 and 3

duplex

1 Position

Mode 1 Mode

Operating Jumper Operating

Enable receive squelch I 1 and 2 I GF3" In 2-wire mode I I

- I 2 a n d 3 I Bell202

i DART RTU E

DS1 -LED status indicator DART microprocessor

JumDer block 21

Jumper block 22

0 4 0

0

9 DART Modem

Step 6 Locate jumper block Z l on the CPM circuit board, which is mounted on the inside of the DART RTU cover. See Figure 5.

Step 7 Select modem operation by placing a jumper between pins 1 and 2 or between pins 2 and 3 of jumper block Z1, as shown in Table 4.

TABLE 4-Selecting CPM Modem Operation

2 and 3 4-wire, full-duplex

Step 8 Hold the DART cover roughly in position and, if applicable, reconnect the communication cable between the DART Modem and the connector on the inside of the DART cover. Then reinstall the cover using the captive hardware. Reconnect the various external communication cables detached earlier.

DB-9M CPM LED I DS3 receptacles status indicators

~"

\ I r"""

Jumper block 21

Figure 5. Location of CPM jumper block Z1. (Note: CPM is mounted on the inside of the DART cover.)

660405 INSTRUCTION SHEET Page 8 of 29 S&C ELECTRIC COMPANY Chicago January 24,1994 S&C ELECTRIC CANADA LTD. Toronto

ICONFIGURING THE DART RTU I Configuring the DART RTU specifies how it is to operate. This procedure uses the DART Configuration System and involves defining, for this specific installation, the following:

Operating parameters of the communication channel

Parameters for status inputs, control outputs, and

Operating parameters of the fault detector feature. The aforementioned data is saved as a configuration

fde, then downloaded to the DART RTU. The DART RTU will operate under this configuration until a new one is created and downloaded.

The DART Configuration System does not check the accuracy of values entered, so it’s essential that you check their accuracy before entering them.

between the master station and the DART.

analog inputs.

Installing and Running the Configuration System To install the DART Configuration System, you’ll need the following:

An IBM PC or compatible personal computer (XT or higher), or portable, with hard disk drive. The DART Configuration System Software, which is provided on a 3.5-inch diskette. A DART maintenance cable. This cable is available from S&C (see “ACCESSORIES” table in Appendix A) or, alternately, may be supplied by the user (see Appendix C for the pin configuration).

0 An isolated 120-volt ac source (if the DART RTU is to be configured without high voltage available to the pad-mounted gear).

If you have not already done so, make a backup copy of the DART Configuration System Software diskette. Use the backup copy to conf@re the DART RW. Store the original diskette in a safe place.

In certain personal computers the communication port signal ground is internally connected to the chassis ground to reduce electromagnetic interfer- ence (EMI). If such a computer is used to configure the DART RTLJ in a transceiver-equipped communication and control equipment group furnished with optional communication processor module (Catalog Number S u f f i “-Vl”), a ground loop will be created which will short-circuit one of the battery packs.

To avoid short-circuiting the battery pack in the event your computer has this internal connection, temporarily disconnect the power connector of the transceiver.

After the DART RTU has been configured, reconnect the power connector of the transceiver.




EONFIGURING THE DART RTU - Continued I ~ ~~~

To run the DART Configuration System: 1. Place the power switch on the DART RTU in the

“OFF” position. See Figure 2. 2. If high voltage is not available to the pad-mounted

gear: Place the power switch on the battery charger in the “OFF” position. See Figure 6. Ground the pad- mounted gear enclosure. Then connect an isolated 120-volt ac source to the terminals on the battery charger marked “EXT/AC.” Now place the power switch on the battery charger in the “ O N position.

charger, make sure that the pad-mounted gear enclosure is properly grounded. Failure to ground the enclosure can result in an electrical shock.

3.

4.

5.

6.

7.

8.

9.

10.

Place the battery-charger input selector switch in the “VOLTAGE SENSOR SOURCE” position if high voltage is available to the pad-mounted gear, or in the “EXTERNAL SOURCE position if high voltage is not available to the pad-mounted gear. Connect the maintenance cable between the communication port of the computer and the “DART MAINTENANCE PORT” of the DART RTU. Place the power switch on the DART RTU in the “ON” position. Turn on the computer. Create the configuration file directory, DART. (Another directory name may be used if desired.) At the C:\> prompt, type md dart and press <ENTER>. Now change the directory. At the C:\> prompt, type cd dart and press <ENTER>. Create the configuration file subdirectory, DARTFILE. (Another subdirectory name may be used if desired.) The configuration system will look for and store all configuration files in this subdirectory. At the C:\DART> prompt, type md dartfile and press <ENTER>. Insert the DART Configuration System Software diskette into the floppy drive. Copy the DART executable file to your hard drive, C. At the C:\DART> prompt, type copy a:dartcfgZ.exe c:\dart (or copy b:[email protected] c:\dart) and press <ENTER>. Copy the communication and control equipment group default file to your hard drive, C. At the C:\ DART> prompt, type copy a:s&cdeflt\ *.* c:\dart\dartfile (or copy b:s&cdeflt\*.* c:\dart\dartfile) and press a N T E R > .

11. At the C:\DART> prompt, type dartcfg2 and press

The DART Configuration System screen will appear. a N T E R > .

Specifying the Configuration File Directory Before configuring the DART RTU, you’ll need to specify the configuration file directory, to indicate to the DART Configuration System where the configuration files you’ll be working on are to be saved.

Note: Make sure to specify the directory for the configuration files before you begin generating, retrieving, or downloading files.

To speclfy the configuration directory follow the steps outlined below: 1. Highlight and select File on the menu bar. 2. From the file menu, select Set Default Parameters.

Then select Configuration File Directory. The DART Directory window will appear, allowing you to enter the location of the configuration files.

3. Spec@ the full path name of the configuration file directory. For the example given above, type c:\dart\dartfile and press <ENTER>. The configuration system will look for and store all configuration files in the directory specified.

4. Press <ESC> twice to return to the menu bar.

Specifying the DNP Version To speclfy the DNP version being used follow the steps outlined below: 1. Highlight and select File on the menu bar. 2. From the file menu, select Change DNP Mode. Press

<ENTER> to toggle between DNP 2 mode and DNP 3 mode which will be displayed in the upper right corner of the screen. Select the appropriate mode.

3. Press <ESC> to return to the menu bar.

Creating a New Configuration To create a new configuration follow the steps outlined below: 1. Highlight and select File on the menu bar. 2. From the file menu, select New Configuration. A

window will appear indicating that the current configuration has been reset (i.e., that the registers for the various configuration groups have been reset).

3. Press <ESC> to return to the menu bar. Then spec@ the parameters for each configuration group shown on the menu bar following the procedures indicated herein.


I CONFIGURING THE DART RTU - Continued i Uploading and Updating a Configuration To update a configuration stored on a hard drive or a diskette: 1. Highlight and select File on the menu bar.

Note: Make sure you have specitied the directory containing the configuration files. See “Specifying the Configuration File Directory” on page 10.

2. From the file menu, select Load Configuration File. A window will appear, allowing you to enter the name of the configuration file.

3. Type the name of the configuration file you wish to update and press <ENTER>. The configuration file will appear.

4. Update the configuration file as required.

to the DART: 1. Highlight and select File on the menu bar. 2. From the file menu, select Upload Configuration of

DART. If the name of the file does not appear, it must be renamed when regenerating the configuration.

To update a configuration that has been downloaded

3. Update the configuration file as required.

TABLE 5-Communication Parameters

Note: If a configuration has been uploaded which was generated in a previous version of the DART Configuration System (prior toversion 2.02), thevoltage magnitude scaling factor will be reduced by 0.565%. See page 14.

Specifying the Communication Parameters Specify the operating parameters of the communication channel between the master station and the DART as follows: 1. Highlight Comm on the menu bar and press

<ENTER>. The communications window will appear, indicating the parameters of the protocol port on the DART. See Table 5.

2. Using the arrow keys, move through the fields and change the parameters to the settings you require. Press <SPACE BAR> or type a number in an appropriate field, as applicable, to change a parameter. Then press a N T E R > to step to the next parameter.


Parameter Description I Modem Settings@ I

Is Not Furnished If Optional CPM

(Catalog Number S u f f i x “-Vl”> If Optional CPM Is Furnished

I I I

Receiver Uses DCD I Receiver uses Data Carrier Detect when receivine. data I Yes/No Yes/No I - I I

DCD to Enable Delay from time Data Carrier Detect is true to time receiver is enabled 8 ms 0 ms

Transmitter Uses RTS

40 ms 1 0 ms RTS Preamble I Delav before transmission [me-transmission mark)

Yes/No Yes/No Transmitter uses Request to Send when sending data

I RTS Postamble I sion (squelch delay) Delay before Request to Send turns false after transmis- I 15ms I 0 ms

I Transmitter Uses CTS I Transmitter is using Clear to Send when sending data I YesiNo I Yes/No I ~~ ~~ ~ ~

Receiver Message Timeout Waiting period to receive message before disconnecting 300 ms 300 ms ~~

I I I 75, 150, 300,600,

Of the DART RS-232 serial port and DART modem 75, 150,300, 600,

Baud Rate (bps) 9600

1200,2400,4800, 1 1200, %$4800, 0 Default values are shown m boldface type

INSTRUCTION SHEET 660405 S&C ELECTRIC COMPANY Chicago Page 11 of 29 S&C ELECTRIC CANADA LTD. 0 Toronto January 24,1994

SBC Remote Supervisory Pad-Mounted Gear Communication and Control Outdoor Distribution (14.4 kv and 25 kv) I Equipment Group-DART


CONFIGURING THE DART RTU - Continued I Specifying the Status Inputs Sequence of Events (SOE) produces a time tag To spec@ the status inputs to use and/or monitor, whenever a status point changes state. highlight Status on the menu bar and press <ENTER>. 0 Change of Status (COS) reports a change in a The status menu will appear. status point.

Hardware Status Corlfiguration Form A is an accumulator which counts the

1. From the status menu, highlight and select Hard- ware Status Configuration. The inputs window will appear. See Table 6.

2. For each point, choose ENABLED or disabled Note: If you enable the Form A Accumulator or the

("-------") in the "Point Enable" column, as Form C Accumulator, you cannot enable SOE or COS.

applicable. To disable a point, press <SPACE BAR>. 4. After configuring each hardware status input, Press 3. In the remaining columns, choose ENABLED or <ESC> once to return to the status menu or twice

to return to the menu bar.

inputs are to be reported to the master station: as a sequence of events, as a change of status, as a Form A Accumulator, or as a Form C Accumulator.

changes in state of a single status point.

changes in state of a pair of status points. Form C is an accumulator which counts the

disabled (" ______- ") to speclfy how the status

TABLE 6-Hardware Status Inputs@

Status Input Description

1 bb Contact 2 aa Contact

6 Not Used 5

Battery Alarm* 4 Local/Remote 3

Not Used 16 Not Used 15 Not Used 14 Not Used 13 Not Used 12 Not Used 11 Not Used 10 Not Used 9 Not Used 8 Not Used 7 Not Used

Point Enable cos SOE

Enabled

Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled

Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled Enabled

@ All status pomts, SOE, and COS are shlpped enabled. Note: All status pomts, SOE, and COS must remaln enabled when using the communicatlon processor module (Catalog Number Suf f i "-Vl")

* Battery low, charger overvoltage, and loss of ac source (if enabled)

Accumulator Form A

Accumulator Form C

"

"

"

"

"

"

"

"

"

"

"

"

"

"

"

"


ICONFIGURING THE DART RTU - Continued I Miscellaneous Internal Status From the status menu, highlight and select Misc. Internal Status. The miscellaneous internal status window will appear. See Table 7.

TABLE 7"MisceUaneous Internal Status@

Description SOE cos Battery Test in Progress

Enabled Enabled LocaURemote Switch Disabled Disabled Analog References Bad+ Disabled Disabled

@ All COS and SOE are shlpped enabled.

Detection Mode on page 19. Applicable only when directtonal fault detectlon LS selected. See Fault-

For each item, choose ENABLED or disabled ("-------") to spec@ if the status inputs are to be reported to the master station as a change of status or a sequence of events.

Specifying the Control Outputs The DART RTU has eight relay control outputs for which the following must be specified: 0 Arm time-the period after which a point is

disarmed, if no execute message is received. On time-the length of time the relay is energized when it is operated.

0 Minimum off time-the minimum length of time the relay remains off before it can be operated again. 24-hour battery check-when enabled, a battery load test will automatically occur for a 30-minute period every 24 hours. The DART RTU always utilizes the arm-time, on-time,

and minimum off-time values, regardless of the values contained in messages received directly from the master station or from the optional communication processor module (if furnished).

The 24-hour battery check, when enabled, initiates an automatic battery load test by disconnecting the ac source from the battery charger for a 30-minute period every 24 hours, thus requiring that all load be served by the batteries. A battery-low condition during this period will turn on the battery alarm status input to provide indication that the batteries require maintenance, The load test will be ceased if the battery alarm is turned on during this period.

To spec@ the control outputs follow the steps outlined below: 1. Highlight Controls on the menu bar and press

<ENTER>. A window will appear showing the arm time, on time, and minimum off time, in

S&C ELECTRIC COMPANY Chicago S&C ELECTRIC CANADA LTD. Toronto

milliseconds (ms). The default values are as follows: arm time-2000 ms; on time-600 ms; and minimum off time-100 ms.

2. Type avalue in each field and press <ENTER>. These fields have the units in multiples of ten.

3. For the 24-hour battery check, press <SPACE BAR> until the appropriate setting (enabled or disabled) is displayed. The default setting is DISABLED.


Specifying the Analog Inputs The DART RTU accepts direct ac analog input connect.ions from VTs and CTs (or similar sensors), thereby eliminating the need for expensive and space- consuming transducers. The following parameters of the analog inputs must be specified: 0 Feeder (sensor) configuration. 0 Nominal reference values for voltage and current.

Magnitude and phase-angle scaling factors for the

Line frequency. Phase-angle "sense." Watt and var scaling.

Feeder Corlfinuration

VTs and CTs (or similar sensors).

Highlight Lalogs on the menu bar and press <ENTER>. From the analogs menu, highlight and select Feeder Configuration. A window will appear listing four feeder configurations, as follows:

1 Feeder. 2 Feeders with Common VTs. 2 Feeders with Separate VTs. 3 Feeders with Common VTs.

Highlight and select the feeder configuration based on the number of power-operated Mini-Rupter Switches in the gear. The proper selection is as follows:

I Operated Switches Number of Power- I Feeder Configuration

1 I 1 Feeder 2 1 2 Feeders with Common VTs

I 3 I 3 Feeders with Common VTs I

A new window wiU appear listing various VT and CT (or similar sensor) arrangements.

INSTRUCTION SHEET 666505 Page 13 of 29

January 24,1994



CONFIGURING THE DART RTU - Continued

4. Highlight and select the proper VT and CT arrangement as follows:

Feeder Configuration Sensing Arrangement

1 Feeder 3 VTS, 3 C T S

1 W on Phase 2 , 3 CTs

2 Feeders 3 VTs, 6 CTs with Common Ws 1 W on Phase 2.6 CTs

3 Feeders 3 VTs, 9 CTs with Common Ws 1 VT on Phase 2,9 C T s

5. If 1 V T on Phase 2 with 3 CTs, 6 CTs, or 9 CTs is selected, a new window will appear showing the terminal block to which the VT is terminated. The default setting is TB2 but 1 VT is always terminated to TE33 for S&C equipment. Press <SPACE BAR> until TB3 is selected.

6. Press <ESC> once to return to the feeder configuration menu, twice to return to the analogs menu, or three times to return to the menu bar.

Nominal Voltage and Current References For purposes of calibrating the fault detector pickup values, it is necessary to specfy nominal voltage and current reference values. To spec& the nominal values follow the steps outlined below: 1. From the analogs menu, highlight and select

Nominal V and I. A window will appear showing the nominal voltage and current reference values presently entered.

2. Specfy nominal voltage and current reference values in the appropriate fields. The appropriate values are as follows:

I Nominal Sensor Rating I NominalVoItage I Nominal Current I 14.4 kv I 7,920volts I 600 amperes 25 kv 13,942 volts I 600 amperes

The nominal voltage and current values listed above are applicable to DART Configuration System Software Version 2.02 only.

3. Press <ESC> once to return to the analogs menu or twice to return to the menu bar.

Current-Sensor and Voltage-Sensor Scaling Factors S&C Remote Supervisory Pad-Mounted Gear includes three 600:5 S&C Current Sensors for each power- operated Mini-Rupter Switch, to provide three-phase monitoring of line current. An S&C Voltage Sensor on the power-operated Mini-Rupter Switch in Compart- ment 1 of each PMH-3, PMH-5, and PME-5 Model and Compartment 2 of all other models provides ac control power to the S&C Battery Charger as well as single-

phase monitoring of system line voltage. On gear supplied with optional three-phase voltage sensing (Catalog Number Suffix “-Wl”), three S&C Voltage Sensors are furnished on the switch.

The sensing accuracy of the entire system (including the DART) is +3% for both current and voltage. To achieve this accuracy, however, precise magnitude- ratio and phase-angle shift measurements must be entered into the DART.

The magnitude ratios and phase-angle shifts of the voltage sensors are written on a yellow card included in the “Installation and Operation Information Kit” provided with the pad-mounted gear.

The magnitude ratio and phase-angle shift of each current sensor were written on a tag attached to the sensor. At the time each current sensor was installed in a particular switch compartment and phase of the pad-mounted gear, its magnitude ratio and phase- angle shifi should have been copied in the appropriate place on the aforementioned yellozv card and the tag removed frorn the current sensor p r i m to energizing the gear.

Retrieve the yellow card from the “Installation and Operation Information Kit” before proceeding. (If the yellow card is not available, refer to Appendix 0). Also note the batterycharger magnitude ratio and phase-angle shifi measurements written on a label affixed to the battery charger cover. The magnitude ratios and phase-angle shifts are used

by the DART to calculate scaling factors. Scaling factors are used by the DART to adjust the sensor outputs to account for the tolerance variations in the components. These values are expressed as a percentage of full load current or voltage for magnitude ratios, and a percentage of 360” for phase-angle shifts. You only need to enter the magnitude ratios and phase-angle shifts and the DART will automatically calculate the scaling factors. To enter the magnitude ratios and phase-angle shifts, follow the steps outlined below: 1. From the analogs menu, highlight and select

CT/VT Corrections. A window will appear listing the analog inputs, along with the magnitude and phase-angle scaling factor values for each input. See Table 8. These scaling factor values are automatically calculated by the DART using the magnitude ratios and phase-angle shifts that have been entered. Refer to Appendix D for the formulas used by the DART to calculate scaling factors.

Note: If a configuration has been uploaded which was generated in a previous version of the DART Configuration System (prior toversion 2.02), thevoltage magnitude scaling factor wiU be reduced by 0.565%.


1 CONFIGURING THE DART RTU "Continued

TABLE 8-VT and CT Scaling Factors@

Analog Input

1 2 3 4

5

6

7

8

9

10

11

12

- T -

Description

Phase 1 Voltage Phase 2 Voltage Phase 3 Voltage Compartment 2,

Compartment 2,

Compartment 2,

Compartment 1,

Compartment 1,

Compartment 1,

Compartment 4,

Compartment 4,

Compartment 4,

Phase 1 Current

Phase 2 Current

Phase 3 Current

Phase 1 Current

Phase 2 Current

Phase 3 Current

Phase 1 Current

Phase 2 Current

Phase 3 Current

T TABLE 10-Phase 1 and Phase 3 Voltage Corrections@

Scaling Factor I I Item I Description I *winst I Magnitude

0.000 7.602 0.000 0.000

0.000

0.000

0.000

0.000

0.000

0.000

0.000

0.000

Phase

24.860 6.67

24.860 0.000

0.000

0.000

0.000

0.000

O.OO0

0.000

0.000

0.000

2. Highlight and select each input to enter magnitude ratios and phase-angle shifts. A window will appear showing the magnitude ratios and phase-angle shift for each input. See Tables 9,10, and 11.

TABLE 9-Phase 2 Voltage Corrections@

I Item I Description I Setting I

Magn~tudt Ratlos

Phase-

Nominal 1 Nominal ratio of voltage sensor + Actual 1 Actual ratlo of voltage sensor See yellow card

Nominal Nommal ratlo of S&CBattery Charger 1386

battery

charger @ For special pad-mounted gear with two S&C Battery Chargers, phase 3 voltage sensor corrections are set according to Table 9 rather than Table 10. If no S&C Battery Chargers are u t h e d , phase 2 voltage sensor corrections are set accordmg to Table 10 rather than Table 9.

+ 1386 for 14.4-kv gear and 2440 for 25-kv gear.

Nommal 1

Actual 1 Actual ratio of v o l t a g e sensor See yellow card Nominal ratio of voltage sensor I +

I Ratios I I nation board Magn~tude Nom,nal Nommal ratio of D A R T t e n i - I 1386 I

I I I I I

I I Actual 2 I Actual ratio of DART t enina- t ion board I 1408.54 I

Phase- Angle Shift

% Actual shift of v o l t a g e sensor Actual card.

@ For special pad-mounted gear with two S&C Battery Chargers, phase 3 voltage sensor corrections are set accordmg to Table 9 rather than Table 10. If no S&C Battery Chargers are utilized, phase 2 voltage sensor corrections are set according to Table 10 rather than Table 9. + 1386 for 14.4-kv gear and 2440 for 25-kv gear.

Add 12" to the voltage sensor phase-angle shlft to account for added shift from the DART termination board.

TABLE 11-Current Corrections

Item Description I Setting ~ ~ ~ , , i + , , d ~ . l Nominal I Nominal ratio ofcurrent sensor1 120

Actual

See yellow card Actual shlft of c u r r e n t sensor Actual Angle Phase-

See yellow card Actual ratio of curren t sensor

Shift

Line Frequencg To spec@ the line frequency follow the steps outlined below: 1. From the analogs menu, highlight and select Line

Frequency. A window will appear showing the line frequency presently selected.

2. Press <SPACE BAR> until the appropriate frequency is displayed. The default line frequency is 60 Hz.


INSTRUCTION SHEET 660.505 S&C ELECTRIC COMPANY 0 Chicago Page 15 of 29 S&C ELECTRIC CANADA LTD. Toronto January 24,1994

SBC Remote Supervisory Pad-Mounted Gear Equipment Group-DART Outdoor Distribution (14.4 kv and 25 kv) Communication and Control


ICONFIGURING THE DART RTU - Continued I Phase-Angle “Sense” A lagging phase angle is usually reported as a negative value. In some cases, the convention is to report a lagging phase angle as positive. To switch the phase- angle sense follow the steps outlined below:

Level 1-For faults cleared by a source-side circuit breaker or recloser operating to lockout, or by a source-side fuse. Level 2-For faults cleared by a source-side circuit breaker or recloser, followed by a successful reclose -

From the analogs menu, highlight and select Phase- Angle Sense. A window will appear showing the Level %“or overcurrents exceeding the minimum “sense” presently selected for reporting a lagging pickup setting. phase angle. Depending on the nature of the fault and how it was

operation.

Press <SPACE BAR> until the appropriate setting cleared, one or more Of the three outputs will be (positive or negative) is displayed. The default generated and reported to the master station. lagging phase-angle sense is negative. Programming can then be implemented at the master

station to provide the optimum degree of fault-detector Press Once to return to the menu discrimination based on system or weather conditions. or twice to return to the menu bar. For example, if the Level 1 output is chosen, only faults

Watt and Var Scaling To specify the percent of watt and var scaling follow the steps outlined below: 1. From the analogs menu, highlight and select Watt

and Var Scaling. A window will appear showing the percent of scaling presently selected.

2. Enter the appropriate scaling percentage. The default percentage is 100%.


Specifying the Fault Detectors The DART RTU includes a unique means of detecting faults occurring on the load side of the switches in pad-mounted gear. This fault detection technique determines the faulted phase or phases whether a source-side protective device has cleared the fault and whether the source-side protective device has successfully reclosed or operated to lockout.

The fault detection technique monitors the presence or absence of voltage and load current following a fault- clearing operation. This technique is inherently more reliable than simple magnitude-only fault detectors, which are prone to misoperation from magnetizing- inrush currents or other transients. With this height- ened reliability, the system operator can easily and precisely determine the location of the fault on the feeder and quickly sectionalize the feeder to restore power to the unfaulted sections.

The fault-detection technique provides the following fault-detector outputs:

resulting in a circuit breaker or recloser lockout will be reported; the system operator will thus only be notified of faults requiring immediate action to restore service. If the Level 2 output is chosen, all faults resulting in an upstream circuit breaker or recloser operation will also be reported; this operating mode is useful for monitoring troublesome feeders with wildlife or tree-trimming problems. If the Level 3 output is chosen, any overcurrent condition greater than the minimum pickup setting will be reported; this most- sensitive operating mode is useful for monitoring problem feeders with reports of unexplained service problems.

Note: The DART does not i n k e n t l y provide this feature. All fault-detector mtputs must be reported by the DART and the master station. must, in turn, be programmed to providefault-detection discrimination.

Fault Detector Parameters There are 20 parameters that may be specified to tailor operation of the fault detectors (i.e., the 6005 S&C Current Sensors and S&C Voltage Sensor(s)). Some of these parameters are selected by the user to ensure that coordination is obtained between the DART fault detector and a source-side circuit breaker or recloser. Other parameters are specified at the factory and should not be changed. Factory-set parameters not typically requiring user selection are so marked with a W” footnote in Table 12. To specify the parameters follow the steps outlined below: 1. Highlight Faults on the menu bar and press

<ENTER>. A window will appear listing the fault detectors.


I CONFIGURING THE DART RTU - Continued ~~

~~ -1 2. Highlight and select Fault Detector-Feeder 1. A

window will appear listing the parameters for that fault detector. See Table 12.

3. Using the arrow keys, move through the fields and

4. Press a S C > once to return to the faults menu or set the appropriate parameters.

twice to return to the menu bar. 5. For pad-mounted gear models having additional

fault detectors-as shown below-repeat Steps 1

TABLE 12-Fault-Detector Parameters

through 4 for Fault Detector 2 and Fault Detector 3 (as applicable).

Switch Compartment PMH-3 and PMH-6 Selection

Au Other Models

2

Fault DetectorFeeder 3 , 4 Fault DetectorFeeder 2 1 Fault JktectorFeeder 1

Field Description/Setting Instructi~n~ h n g e off+etthgsO

A conditlon that exists when the overcurrent is greater than the minimum phase-fault pickup setting. Set equal to the minimum pickup setting of the upstream phase overcurrent relay Starts

Over 1 Ends A condition that exists when the overcurrent drops from greater than the phase-fault overcurrent pickup settlng to less than the phase-fault overcurrent pickup setting. Set equal to the minimum pickup setting of the upstream phase overcurrent relay

200-1200 Amperes (600 Ampem) I

Return of I A condition that exists when the phase current is 20% greater than the "loss of current" setting, but not greater than the minimum phase-fault pickup setting

A condltion that exists when the load current drops from a value that was 20% higher

settlng Loss of 1 than the "loss of current" setting to a value that is less than the "loss of current"

2-75 Amperes ( 15 Amperes)*

Return of V A condition that exists when the voltage IS greater than 85% of the nominal system line-to-neutral voltage. Set equal to 85% of the nominal system linet4meutral voltage

A condition that exists when the voltage drops from greater than 85% of the nominal Loss of v

voltage. Set equal to 10% of the nominal system line-to-)zeutral voltage system line-to-neutral voltage to less than 10% of the nominal system he-to-neutral

2000-99999 Volts (6120 Volts)A

246-99999 Volts (720 V01ta)A

Neutral Fault Starts

Backfeed Deviation

Qualify Over I

A condition that exists when the overcurrent is greater than the minlmum neutral-

m c u r r e n t relay fault plckup setting. Set equal to the minimum pickup setting of the upstream ground

A condltion that exists when the phase relationship between voltage and current IS significantly different than it would be for a fault beyond the Mini-Rupter Switch. The backfeed feature is enabled automatically. The normal direction will be determined automatically after observing load current and h e voltage for a period of 4 seconds. The backfeed feature will be disabled automatically if the switch has been in the open position for longer than 15 mlnutes

The minlmum time that the overcurrent must exceed the minlmum phase-fault plckup setting, to generate a Level 3 output

100-1000 Amperes (200 Amperes)

90-180 Electrical Degrees (l20)*

1 - 100 Half-Cycles (3 Half-Cycles)*

Qualify Over I

2- 100 Cycles The minimum tune that the voltage or current must be lost to initiate magnetizmg- Qualify No (10 Cycles)* current detector and return to the normal state Recovery

10-lo00 Cycles The minimum time after the overcurrent ends and voltage returns to reset the over-

I I or V

I Qualify Breaker State

inrush restramt I ( 5 Cycles)* The mlnimum time after the overcurrent ends and there is no voltage to initiate a 2-100 Cycles Level 2 fault detector output I (2 Cycles)* I

0 Default values are shown m boldface type * The factory-set default value is appropriate for most applicatlons and does not typically requlre user selectlon.

* Based on a 12.47-kv system voltage.

INSTRUCTION SHEET 66@505 S&C ELECTRIC COMPANY Chicago Page 17 of 29 S&C ELECTRIC CANADA LTD. Toronto January 24,1994

S8C Remote Supervisory Pad-Mounted Gear Equipment Group-DART Outdoor Distribution (14.4 kv and 25 kv) Communication and Control


I CONFIGURING THE DART RTU - Continued I TABLE 12-Fault-Detector Parameters-Continued

Field Description/Setting Instructions

The time delay equal to the longest open-circuit time between automatic opening and

(Reclosing Interval) time period starts upon detection of "loss of current" and "loss of voltage" and resets the succeeding automatic reclosure of the upstream protective devlce. The reclosing

immediately when this condition is not met. Set equal to the lonyest open-time interval of the upstream recloser or reclosiny circuit breaker

Qualify Breaker Recovery device has cleared a temporary fault and successfully reclosed. The timer starts upon The time delay equal to the reset interval of the upstream protective device after the

(Reset Interval) vu1 of the upstream recloser or reclosing circuit breaker detection of "return of voltage" or "return of current." Set grater than the reset inter-

Reclose Period

Magnetlc Restraint The minimum time delay sufficient to allow transformer Inrush currents to decay below the minimum phase-fault pickup setting. Default setting will accommodate transformers rated up through 5000 h a three-phase

Qualify Idle State starts upon detection of "loss of voltage" or "loss of current" or after the upstream The time delay requlred to restore the fault detector to the normal state. The timer

protective devlce has locked out. Set greater than the reset interval of the upstreurn recloser or reclosing circuit breaker

Qualify Neutral Fault

The minimum tune that the overcurrent must exceed the neutral-fault pickup settmg to lnltlate a fault detector output

Define Direction Specifies binary output of status points: If "normal" is selected, forward power flow is returned as "0" and reverse power flow is returned as "1." If "reversed" LS selected, forward power flow 1s returned as "1" and reverse power flow LS returned as "0" State

COS (Change of Status) master station along w t h t h e present condition of all fault detector outputs on Fault Events If enabled, fault events (status changes) since the last poll will be reported to the

SOE (Sequence of Events) If enabled, up to 128 fault events (status changes) will be time-tagged and stored in On Events when polled. Registers are cleared after report to the master station is concluded

memory and, subject to protocol considerations, will be reported to the master statlon

9 Default values are shown kn boldface type * The factory-set default value is appropriate for most apphcatkons and does not typically require user selection.

Voltage and Current Unbalance Detection Parameters When the pad-mounted gear is supplied with optional three-phase voltage sensing (Catalog Number Suffix "-Wl"), the DART detects voltage and current unbalance by calculating the phasor summation of three-phase voltages and currents. If the voltage or current unbalance exceeds a preset reference level for a period of time necessary to confirm that the unbalance is not transient, a software generated status point(s) will change state. To specify the voltage and current unbalance

m g e of Settings@

60-3600 Cycles (3600 Cycles)


10- 120 Cycles (60 Cycles)*


1 - 100 Cycles (30 Cycles)*

NormaVReversed

(Yes)/No*

(Yes)/No*

detection parameters, follow the steps outlined below: 1. From the faults menu, highlight and select V and

I Unbalance. A window will appear listing the parameters for voltage and current unbalance detection. See Table 13.

2. Using the arrow keys, move through the fields and

3. Press <ESC> once to return to the faults menu or set the various parameters.

twice to return to the menu bar,

660-505 INSTRUCTION SHEET Page 18 of 29 S&C ELECTRIC COMPANY Chicago January 24,1994 S&C ELECTRIC CANADA LTD. Toronto

t C O N F I G U R I N G THE DART R T U - Continued I TABLE 13"Voltage and Current Unbalance Detection Parameters

Field I Description/Setting Instructions I m e of Settings@ J

I Enabled I master station I Ores>/No I COS (Change of Status) If enabled, unbalance events (status changes) since the last poll will be reported to the

L I I 1

SOE (Sequence ofEvents) If enabled, unbalance events (status changes) will be tlme-tagged and stored in

Enabled memory and, subject to protocol considerations, will be reported to the master station when polled. Registers are cleared after report to the master station IS concluded

(Yes)/No

system linebneutral voltage than the minimum voltage-unbalance pickup setting. Set equal to 25% of the nminal Voltage Unbalance A condition that exlsts when the phasor summation of three-phase voltage is greater 246-99999 Volts

(1800 Volts)

Current

The minlmum time that the unbalance condition must exceed the minimum unbal- Q u a l a Unbalance

25-600 Amperes A condition that exists when the phasor summation of three-phase current is greater than the minimum current-unbalance pickup setting (LOO Amperes)

1-30 Seconds (5 Seconds) Detectlon ance pickup setting to initlate an unbalance detection output

@ Default values are shown In boldface type

Based on a 12.47-kv system voltage.

Fault-Detection Mode The DART RTU features a choice of two fault-detection modes: standard fault-detection mode or directional fault-detection mode.

Standard fault-detection mode: When configured for standard fault detection, the DART reports only forward faults. The backfeed restraint feature blocks indication of a fault when fault current is fed from the reverse direction (e.g., a load-side motor or generator feeding a source-side fault). Backfeed restraint prevents false indication of a downstream fault when, in fact, the fault is upstream.

Directional fault-detection mode: When configured for directional fault detection, the DART reports forward and reverse faults. The backfeed restraint feature is eliminated and fault reporting includes a forward or reverse status.

To spec@ the fault-detection mode follow the steps outlined below: 1. From the faults menu, highlight and select Fault-

Detection Mode. A window will appear showing the fault-detection mode presently selected.

2. Press <SPACE BAR> until the appropriate mode is selected: forward faults with backfeed (standard fault-detection mode), or forward and reverse faults

without backfeed (directional fault-detection mode). The default fault-detection mode is forward faults with backfeed.

3. Press <ESC> once to return to the faults menu or twice to return to the menu bar.

Generating a Configuration File Once you have entered all the data described above, you'll need to generate a configuration file. This file will be saved in the configuration file directory specified earlier,

To generate a configuration file follow the steps outlined below: 1. 2.

3.

4.

Highlight and select File on the menu bar. From the file menu, select Generate Configuration Files. A window will appear for you to enter the name of the configuration file. Type a filename, and press <ENTER>. The fiename can be up to eight characters in length. If desired, download the configuration to the DART RTU following the steps outlined in the next section.

INSTRUCTION SHEET 660-505 S&C ELECTRIC COMPANY Chicago Page 19 of 29 S&C ELECTRIC CANADA LTD. Toronto January 24,1994



CONFIGURING THE DART RTU - Continued I Downloading a DART Configuration Once you have created a configuration file, you’ll need to download it to the DART RTU using the download function of the DART Configuration System. During downloading, the configuration system replaces the existing configuration in the DART RTU memory (if any) with the new one.

To download a configuration follow the steps outlined below: 1. Highlight and select File on the menu bar. 2. From the file menu, select Download File to DART.

A window will appear for you to enter the filename of the configuration f ie to download.

3. Type the name of the configuration file desired, and press <ENTER>.

The “Download to DART” window will appear. Several messages will then scroll across the screen as the DART Configuration System accesses the DART RTU, erases the existing configuration, copies the new configuration to the DART RTU memory, and implements the new configuration.

If the configuration has been successfully downloaded, the following message wiU appear: “Download complete and DART r m f i g u r e d . Press any key to continue, ’’ The new configuration is now in effect.

Should a problem occur during downloading of the configuration, the following message will appear: “A problem has been detected in downloading to the DART. Check your maintenance port connections and try again. Press any key to continue. ’’ Press any key to continue using the DART Configuration System. Check the cable to verify that it is properly configured, then reattach it and try downloading the file again.

When the configuration has been successfully downloaded, turn off the DART RTU and the computer and disconnect the DART maintenance cable. If an isolated 120-volt ac source was connected to the battery charger, turn off the battery charger and disconnect the ac source.

ICONFIGURING THE COMMUNICATION PROCESSOR MODULE I If the optional communication processor module (CPM) is furnished (Catalog Number Suffix “-Vl”), you’ll need to configure it in order to specify how it is to operate. Configuring involves defining, for this specific installation, the following:

The CPM address. 0 Operating parameters of the communication channel

Status point mapping and analog point mapping. The aforementioned data is saved on diskette as a

configuration fie, then downloaded to the CPM. The CPM will operate under this configuration until a new one is created and downloaded.

between the master station and the CPM.

The CPM is configured using either of the following two configuration systems: D2O/CPM Configuration Sustem: Refer t o S&C Instruction Sheet 660-510, “Communication Processor Module for Communication and Control Equipment Group.” Also refer to Harris Controls documentation, “CPM Configuration Guide” and “DART Configuration System User’s Guide.” ConJTgPro Configuration astern: ConfigPro is a new user-friendly windows-based configuration system designed to replace the DZO/CPM Configuration System. Refer to Harris Controls documentation, “ConfigPro Configuration System User’s Guide.”

660-505 INSTRUCTION SHEET Page 20 of 29 S&C ELECTRIC COMPANY Chicago January 24,1994 S&C ELECTRIC CANADA LTD. Toronto

ITESTING THE COMMUNICATION AND CONTROL EQUIPMENT GROUP 1

If the pad-mounted gear is energized, decouple the Mini-Rupter Switches from the switch operators. Operational testing will result in temporary service interruptions if the Mini-Rupter Switches are coupled to the switch operators.

After you’ve configured the DART RTU and communication processor module (if furnished), you can test the functioning of the communication and control equipment group, and the switch operators and Mini- Rupter Switches (if coupled), using the personal computer and suitable user-supplied protocol test software.

To do so, you’ll need a DART test cable. This cable is available from S&C (see “ACCESSORIES” table in Appendix A) or, alternately, may be supplied by the user (see Appendix C for the pin configuration). You’ll also need an isolated 120-volt ac source if the communication and control equipment group is to be tested without high voltage available to the pad- mounted gear.

In certain personal computers the communication port signal ground is internally connected to the chassis ground to reduce electromagnetic interfer- ence (EMI). If such a computer is used to test a transceiver-equipped communication and control equipment group furnished with optional communication processor module (Catalog Number Suf f i “-Vln), a ground loop will be created which will short- circuit one of the battery packs.

To avoid short-circuiting the battery pack in the event your computer has this internal connection, temporarily disconnect the power connector of the transceiver.

After the communication and control equipment group has been tested, reconnect the power connector of the transceiver.

To test the communication and control equipment group: 1. Place the power switch on the DART RTU in the

“OFF“ position. See Figure 2. 2. To test the Mini-Rupter Switches (if coupled) and

switch operators, place the local/remote selector switch in each switch operator in the “REMOTE“ position.

3. If high voltage i s not available to the pad-mounted gear: Place the power switch on the battery charger in the “OFF”’ position. See Figure 6. Ground the pad- mounted gear enclosure. Then connect an isolated 120-volt ac source to the terminals on the battery charger marked “EXT/AC.“ Now place the power switch on the battery charger in the “ON” position.

charger, make sure that the pad-mounted gear enclosure is properly grounded. Failure to ground the enclosure can result in an electrical shock.

4. Place the battery-charger input selector switch in the “VOLTAGE SENSOR SOURCE” position if high voltage is available to the pad-mounted gear, or in the “EXTERNAL SOURCE” position if high voltage is not available to the pad-mounted gear.

5. Connect the test cable between the communication port of the computer and the “DART COMMUNICA- TION PORT” or “CPM COMMUNICATION PORT,” as applicable.

6. Place the power switch on the DART RTU in the “ON” position.

7. Turn on the computer, and start up the test software. Check the LED indicators on the DART RTU and on the CPM (if furnished), to confirm proper operation. See Figures 2,4, and 5. Refer to Table 14 for the meaning of LED status indicators.

8. When you’re done, turn off the DART RTU and the computer and disconnect the DART test cable. If an isolated 120-volt ac source was connected to the battery charger, turn off the battery charger and disconnect the ac source.

INSTRUCTION SHEET 660m505 S&C ELECTRIC COMPANY Chicago Page 21 of 29 S&C ELECTRIC CANADA LTD. Toronto January 24,1994

S&C Remote Supervisory Pad-Mounted Gear Communication and Control Outdoor Distribution (14.4 kv and 25 kv) I Equipment Group-DART


PLACING THE COMMUNICATION AND CONTROL EQUIPMENT GROUP INTO OPERATION

Step 1 Energize the pad-mounted gear in accordance with standard operating practices. Confirm that the battery- charger input selector switch is in the “VOLTAGE SENSOR SOURCE” position. Then place the battery charger power switch in the “ O N position and confirm that the power indicator LED is illuminated and that the charger overvoltage and battery low indicator LEDs are not illuminated.

TABLE 14-

DART RTU

I CPM

,ED Status Indicators

LED Indicator

DS1 (Microprocessor Run)

DS1 (Microprocessor Run)

DS2 (Transmit Data)

DS3 (Receive Data)

step 2 Verlrjr that the power switch on the DART RTU is in the “ON” position. Then check the LED indicators on the DARTRTU and on the CPM ($furnished), to confirm proper operation. See Figures 2, 4, and 5. Refer to Table 14 for the meaning of LED status indicators.

step 3 The battery charger includes a loss of ac source alarm which is shipped disabled. To enable the loss of ac source alarm, remove the cover from the battery charger and move the jumper in the upper left-hand corner from position ‘Wl” to ‘W2.”

status 1 ON FLASHING OFF

Hardware Fault Hardware Problem Fast (4 times per second) = Normal Slow (2 times per second) = Database Problem

Normal I Hardware Problem I Software Problem I Continuous Space

Continuous Soace I Continuous Mark I Receiving Message

Transmitting Message Continuous Mark

660.505 INSTRUCTION SHEET Page 22 of 29 S&C ELECTRIC COMPANY Chicago January 24,1994 S&C ELECTRIC CANADA LTD. Toronto

Charging the Battery PacksIf the communication and control equipment group willnot be placed in service by the date marked on thetag affixed to the pad-mounted gear, the batterycharger must be connected to an isolated 120-volt acpower source to charge the battery packs. To connecta 120.volt ac power source to the battery charger,proceed as follows:1. Make sure that the power switch on the battery

charger is in the “OFF” position.2. Using a voltmeter, check the open-circuit voltage of

each battery pack by placing the probes on theappropriate ‘Y” and “-” terminals on the batterycharger. One set of terminals is provided for eachbattery pack. See Figure 6.a. If the open-circuit voltage of either battery pack

is less than 10.5 volts dc, both battery packs mustbe replaced.

b. If the open-circuit voltage of each battery packis 10.5 volts dc or greater, proceed to Step 3.

3. Ground the pad-mounted gear enclosure.

4. Place the battery-charger input selector switch inthe “EXTERNAL SOURCE” position.

5. Connect an isolated 120~volt ac source to the twoterminals marked “EXT/AC.” See Figure 6.

charger, make sure that the pad-mounted gearenclosure is properly grounded. Failure to groundthe enclosure can result in an electrical shock.

6. Place the power switch on the battery charger inthe “ON” position and allow the battery packs tocharge for 24 hours.

7. After charging the battery packs, place the powerswitch on the battery charger in the “OFF” position.Then disconnect the 120~volt ac power source, andreturn the battery-charger input selector switch tothe “VOLTAGE SENSOR SOURCE” position.

Battery alarms

/Input selector switch

Power switch

Terminals for connectingexternal ac supply forcharging battery

Battery pack test points

Figure 6. Battery charger.

q S&C ELECTFttC COMPANY l ChicagoS&C ELECTRIC CANADA LTD. l Toronto

INSTRUCTION SHEET 6601505Page 23 of 29

January 24,1994

S&C Remote Supervisory Pad-Mounted Gear Communication and ControlOutdoor Distribution (14.4 kv and 25 kv) Equipment Group-DART

Configuration System SoftwareVersion 2.02 or Higher

MAINTENANCE - Continued I

Battery Pack ReplacementNo routine maintenance is required for the batterypacks. Refer to S&C Data Bulletin 669-97 (furnished)for information concerning life expectancy of thebattery packs. Evidence that the batteries are reachingend of life will be by illumination of the battery lowindicator and by remote alarm indication from thebattery charger. Further, a measured open-circuitvoltage across either battery pack of less than 10.5 voltsindicates that both battery packs should be replaced.To replace the battery packs proceed as follows:

2. Remove and retain the two W-20 hex nuts securingthe hold-down bracket over the battery packs, andremove the bracket. See Figure 7.

3. Remove the connectors from the battery packterminals, noting the appropriate “-I-” or “-”terminals, as well as to which battery pack eachconnector is attached. Remove the old battery packs.

4. Place the new battery packs in the enclosure andattach the connectors to the appropriate terminals.

5. Replace the bracket over the battery packs and

1. Place the battery charger power switch in the “OFF”position.

tighten the two nuts.

Battery terminals (not shown)/ located at ends of batterv oacks

DABattery packs

Hold-down bracket

Figure 7. Battery packs.

660405 INSTRUCTION SHEETPage 24 of 29January 24,1994

S&C ELECTRIC COMPANY l Chicago -S&C ELECTRIC CANADA LTD. l Toronto lm

APPENDIX A I Communication and Control Equipment Group Optional Features and Accessories

OPTIONAL FEATURES

Suffix Added to

Catalog Number Item Pad-Mounted Gear

I

900-Mhz Mlcrowave Data Systems, Inc Transcelver (Model MDS-2310),

wlth Diagnostic Module@@

Transceiver

analog modem@ loODback module@

Transcelver wlth 1200-bps

-T1

-T2A

I Transcewer 4800-bps I -T3A

dlgital interfac :e@ Transceiver wlth loODback module@ -T4A

Transceiver

dlgltal Interface@ loopback module@

Transcelver with 9600-bpS

-T5A

-T6'

I-

400-Mhz Mlcrowave Data Systems, Inc. Transcelver (Model MDS-4310), with Diagnostlc M o d u l e @ m

1200-bps Transcewer

ana'og modem@ module@ -T12'

Transcelver -T13'

module@ -T14'

Transcelver -T15. 9600-bps

Interface@ Transcelver wlth loopback module@ -T16'

Communlcatlon Processor Module (CPM) for WESDAC DART-provides for emulation of a wlde variety -vl

Three-phase Voltage Sensung using S&C Voltage Sensors -W1

of commonly used communication protocols

@ Includes surge protectlon Antenna, antenna support, and coaxlal @ Included in transceiver-permits direct digital transmlsslon of data. feedline are to he provided by others Propagatlon study, frequency The WESDAC DART lncludes RS-232 data port. selection, and FCC hcense appllcatlon are also to be provlded by others. @ Channel bandwtdth IS 12.6 Khz

@ Programmable withln the 406-Mhz to 430-Mhz sub-hand. For other sub- hands wlthin the 390-Mhz to 470-Mhz frequency range, consult the nearest

@ Bell 202/CCI'IT V23 compatlble, 1200-bps asynchronous modem IS S&C Sales Office.

located on the WESDAC DART. * Only for use In conjunctlon with Mtcrowave Data Systems'

I'ermlts key up of transcewer from master statlon to measure return- MDS-1000HSp or MDS-2100 master stations.

slgnal strength of remote transcewer, frequency offset, and FM devlatlon Only for use in conJunctlon wlth Microwave Data Systems' MDS-4100 levels master statlon


S8C Remote Supervisory Pad-Mounted Gear Equipment Group-DART Outdoor Distribution (14.4 kv and 25 kv) Communication and Control


APPENDIX A - Continued I ACCESSORIES

Item Catalog Number

Current Sensors, set of three-split core, rated 6005 amperes for appllcation in conjunction with manually operated switches for monltoring load currents-for conductors of up to 3’h-inch d lametea

for voce communlcatlon wlth master-station radio@

TA-2224

Orderwire Module and Telephone Handset for Transceiver-permits connection of telephone handset to transcewer 9931-313

- - -

-

-

-

-

L

Q where the insulation is exposed but ungrounded (for example, where MDS-IOOOHSp, MDS-2100, or MDS-4100 master stations

~

Programmerflest Set for Transcelver-permlts programming of transceiver operating parameters (e.g., transmlt and recelve frequencles, etc.) and review of performance parameters (e.g., transmit-power output, recelve slgnal-strength, etc ) 9931-301

Malntenance Cable-for use In conflgurlng DART RTU and optional com- For personal computers having 25-pm

munication processor module (if speclfied). Connects communicatlon port

malntenance port For persona, computers 9-pln of user-supplted personal computer to DART maintenance port or CPM

communication TA-2247

serial communicatlon port TA-2240

Test Cable-for use in testing functioning of remote supervisory pad- For personal computers havmg 25-pin TA-2249 mounted gear by means of sultable user-suppiled protocol test software. Connects communlcation port of user-supplied personal computer to

Serial communlcatlon

DART communlcation port or CPM communlcatlon port For personal computers havlng 9-ptn serlal communicatlon port TA-2250

~

Detailed Hardware Manual for Communlcatlon and Control Equipment Group@”ncludes schernattc diagrams, circuit-board layouts, parts lists, bench-check procedures, and operating descrlptions for the swltch control and battery charger

RD-3601

Current sensors must not be Installed on unshielded cables or on cables @ Only for use in con~unctlon wlth Microwave Data System

dielectric tape or heat-shrink tubing i~ used). These sensors are intended 0 The detaded instruct,on manual Ls hardware.orlented and does not for applrcation at ground potentlal and may be damaged by the voltage include protocol or documentation gradient between the cable mulation and ground.

660.505 INSTRUCTION SHEET Page 26 of 29 S&C ELECTRIC COMPANY Chicago January 24,1994 S&C ELECTRIC CANADA LTD. Toronto

1 APPENDIX B I

DART Modem Signal Lines (RJ-11-F Connector)@ 2-WIRE (HALF-DUPLEX) OPERATION 4-WIRE (FULL-DUPLEX) OPERATION

Pin Number 1 Signal Line Pin Number I Signal Line I I I I

1 TIP 2 GND (Earth Ground)

3 6

Rlng TX Key Posltlve

A TX Key Negatlve

0 Applicable to lnstallatlons not furnished with communication processor module (Catalog Number Suff~x “-Vl”) * The common of the DART is used for TX Key Negative. For 12-volt dc communlcatlon devlces, the common is at -12 volts dc For 24-volt dc communlcatlon devlces, the DART and communlcation devlce are at the same ground potential Consult the nearest S&C Sales Office for additional informatlon.

CPM Modem Signal Lines (RJ-11-F Connector)@ 2-WIRE (HALF-DUPLEX) OPERATION

TX Key Negatlve TX Key Positwe

@ Appllcable to lnstallatlons furnished with communlcation processor module (Catalog Number Suffix “-Vl”)

A Transcelver key signal llnes are located on CPM Communlcation Port

Posltlve. On CPM revwon 0 or 1, TX Key Negatlve IS located on pin 5. (DB9-M connector 53) pm 4 IS TX Key Negatlve and pm 6 is TX Key

The key clrcult conslsts o f Z F E T used to sink a key signal from the communication devlce [a FIT 1s used for Microwave Data Systems’ transcelvers).

GND (Earth Ground) RX (Receive) Ttp TX (Transmlt) Ring TX (Transmit) TIP RX (Recetve) Ring TX Key Positive

A TX Key Negative

4-WIRE (FULL-DUPLEX) OPERATION

RX (Recelve) Tip TX (Transmlt) Ring TX (Transmit) Tip

A TX Key Negatlve A TX Key Posrtwe


S&C Remote Supervisory Pad-Mounted Gear Outdoor Distribution (14.4 kv and 25 kv)


DART Maintenance Cable-For Configuring DART RTU@@ DART Maintenance PC Communication

Port IDB-94 DART Maintenance

Port IDB-25-F PC Communication

Port IDB-9-M Port (DE-9-F Connector) - Connector

7

Cable Catalog Number TA-2247. For personal computers having

25-pin serial communication port

I Connector) Connector)

GND

TX

RX

COM

COM

TX

RX

GND

1- - - 2

- 3

4 5

Cable Catalog Number TA-2248. For personal computers having 9-pin serial communication port

RX

TX

COM

DART Test Cable-For Testing DART RTU@@ DART Communication PC Communication

Port (DB-9-M Port (DB-25-F DART Communication PC Communication

Port (DB-9-M Connector)

Port (DB-9-F Connector) Connector) Connector)

n I

RTS $! CTS 20

TX RX

RTS

CTS DSR

COM

DCD DTR

DCD

RX

TX

COM

RTS

CTS

1 I

Cable Catalog Number TA-2250. For personal computers having 9-pin serial communication port

DCD

RX

TX

DTR COM

DSR

RTS

CTS

Cable Catalog Number TA-2249. For personal computers having

25-pin serial communication port

) Also used for testing optlonal communlcation processor module @ Slgnal llne abbrewatlons. DCD = Data Carrier Detect. RX = Receive :atalog Number Suffix "-Vl") through CPM cornmunicatlon port. Data, TX = Transmit Data, DTR = Data Termmal Ready, COM = Signal

Common, DSR = Data Set Ready, RTS = Request to Send, CTS = Clear to Send.


Sensor Scaling Factors To achieve an accuracy of f3% for both current and voltage sensing, precise magnitude ratio and phase- angle shift measurements must be entered into the DART. The measurements for the voltage sensors are written on a yellow card included in the “Installation and Operation Information Kit” shipped with the pad- mounted gear. The measurements for the current sensors were written on a tag attached to each sensor. During installation, these measurements should have been written on the yellow card.

The magnitude ratios and phase-angle shifts are used by the DART to calculate scaling factors. Scaling factors are used by the DART to adjust the sensor outputs to account for the tolerance variations in the components. These values are expressed as a percentage of full load current or voltage for magnitude ratios, and a percentage of 360” for phase-angle shifts. You only need to enter the magnitude ratios and phase-angle shifts and the DART will automatically calculate the scaling factors. The scaling factors calculated by the DART are displayed after entering the magnitude ratios and phase-angle shifts. For reference, formulas for calculating the scaling factors are included in this appendix.

The magnitude-ratio and phase-angle shift measurements of each S&C Voltage Sensor are scribed on the end of the sensor. These measurements are expressed in the form “V XXXX 4 =.X,” where the value to the right of the “V” is the magnitude ratio and the value to the right of the ‘‘4’’ is the phase-angle shift.

The magnitude-ratio and phase-angle shift measurements of each S&C Current Sensor are marked on the sensor. These measurements are expressed in the form “XXX.X 4 X.X,” where the value to the left of the “4” is the magnitude ratio and the value to the right is the phase-angle shift.

The magnitude-ratio and phase-angle shift measurements of the battery charger are written on a label affied to the battery charger cover.

Voltage-Sensor Scaling Factors Phase 2: Magnitude Scaling Factor = [ 1 -

Phase-Angle Scaling Factor = ZB (100) (360)

Phase 1 and Phase 3 (for models equipped with thre phase voltage sensing):

Magnitude Scaling Factor = [ 1 - (Kv) ] [ 1001 (X,) ( 1 U . W

Phase-Angle Scaling Factor = (z, + 1.2) (100) (360)

where Kv = 1386 (for 14.4-kv models) or 2440 (for 25-kv models)

X, = magnitude ratio of voltage sensor YB = magnitude ratio of battery charger ZB = phase-angle shift of battery charger Z, = phase-angle shift of voltage sensor

Current-Sensor Scaling Factors

Magnitude Scaling Factor = (1 - -)(loo) 120 x, Phase-Angle Scaling Factor = zc (100)

(360) where Xc = magnitude ratio of current sensor

Zc = phase-angle shift of current sensor

Raw Count Conversion For instructions on converting raw counts to engineer- ing units and vice versa, refer to the “Harris DART RTU and CPM Points List” included with the configuration manual.

INSTRUCTION SHEET 660.1505 S&C ELECTRIC COMPANY Chicago Page 29 of 29 S&C ELECTRIC CANADA LTD. Toronto January 24,1994

Documents

Instruction Sheet 660-505