Instruction Manual Alstom d0611-03-En

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Instruction Manualfor Installation and Maintenance

3 F129700 08-11-2013 Carrer F./DS Marianti N.

2 F120658 26-07-2010 Perissinotto Panighel1 Issue 21-11-2006 Perissinotto Panighel

Revision Description Date Compiled by Approved by

D0611-03-EN © - ALSTOM

Equipment:

Type: HIGH SPEED POWER EARTHING SWITCH

Rated Voltage:

145 kVRated Short-time Current: 25 kA x 1 s

Notes:



Instructions for Installation and MaintenanceCONTENTS

eeIM-template-02-2011.dot © - ALSTOM

D0611-03-EN2 / 38

CONTENTS

1. SAFETY INSTRUCTIONS.........................................................................................................................4

1.1 SPECIAL SAFETY REQUIREMENTS ..............................................................................................4

1.2 GENERAL SAFETY REQUIREMENTS ............................................................................................4

2. DESCRIPTION ..........................................................................................................................................5

2.1 GENERAL .........................................................................................................................................5

GENERAL ......................................................................................................................................................5

3. PACKAGING AND SHIPMENT.................................................................................................................7

3.1 TYPES OF PACKAGES ....................................................................................................................7

3.1.1 Shipping cases............................................................................... ........................................................... ... 7

3.2 SHIPPING UNITS..............................................................................................................................7

4. RECEIPT AND STORAGE........................................................................................................................8

4.1 RECEIPT...........................................................................................................................................8

4.2 STORAGE.........................................................................................................................................8

5. UNPACKING AND LIFTING .....................................................................................................................9

6. INSTALLATION AND ADJUSTMENT ....................................................................................................11

6.1 CONDITIONS AND PRELIMINARY OPERATIONS BEFORE INSTALLATION .............................11

6.2 INSTALLATION OF THE STR EARTHING SWITCH .........................................................................11

6.2.1 Single-pole disconnector unit (Fig. 1) .................................................... .................................................. 11

6.2.2 Drive of the disconnector (Fig. 1, 7)................................................................. ........................................ 12

6.2.3 Vertical drive shaft (Fig. 1, 5, 5A, 7) ...................................................... .................................................. 12 6.3 ADJUSTMENT OF THE STR EARTHING SWITCH ................................................................................13

7. CONNECTIONS, FINAL CHECKS AND FINE-TUNING ........................................................................14

7.1 CONNECTIONS..............................................................................................................................14

7.2 FINAL CHECKS AND FINE-TUNING..............................................................................................14

8. MAINTENANCE PLAN............................................................................................................................15

9. DISASSEMBLING THE EQUIPMENT AND REPLACEMENT OF MAIN PARTS .................................19

9.1 DISASSEMBLING THE EQUIPMENT.............................................................................................19

9.1.1 Disconnection ........................................................... ........................................................... ..................... 19

9.1.2 Disassembly .................................................... ........................................................... ............................... 19 9.2 DISASSEMBLING THE EQUIPMENT AND REPLACEMENT OF MAIN PARTS............................19

9.2.1 Mobile contact of the disconnector (Fig. 2)............................................ .................................................. 20

9.2.2 Fixed contacts (Fig. 2)........................................................ ........................................................... ........... 20

9.2.3 Drive (Fig. 7) .................................................. ........................................................... ............................... 20

10. LIST OF TOOLS..................................................................................................................................21

11. SPARE PARTS ...................................................................................................................................22

ATTACHMENT “A”: SPECIFICATIONS OF THE S TR DISCONNECTORS..................................................34

ATTACHMENT "B": TIGHTENING TORQUES FOR SCREWS & BOLTS....................................................35

ATTACHMENT "C": RECORDING FORM FOR COMMISSIONING OF SWITCHGEAR .............................36



Instructions for Installation and MaintenanceCONTENTS


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LIST OF FIGURES

FIG. 1: INSTALLATION DIAGRAM FOR THE STR SINGLE-POLE EARTHING SWITCH....................... 23

FIG. 2: POLE ASSEMBLY ......................................................................................................................... 25

FIG. 2A: DETAIL OF THE LOWER PART ............................................................................................... 26

FIG. 2B: DETAIL OF THE EARTHING BLADE/MOBILE ARM................................................................ 27

FIG. 3: FEMALE FIXED CONTACT........................................................................................................... 29

FIG. 5: LOWER PART................................................................................................................................ 30

FIG. 7: VERTICAL DRIVE SHAFT AND MANUAL DRIVE........................................................................ 32

FIG. 10: LUBRICATION AND GREASING .............................................................................................. 33



Instructions for Installation and Maintenance1. SAFETY INSTRUCTIONS


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1. SAFETY INSTRUCTIONS

1.1 SPECIAL SAFETY REQUIREMENTSSpecial safety requirements are incorporated in this instruction manual and areidentified as follows:

Danger Immediate danger, possible consequences:

- Death or serious injury

Caution

Dangerous situation, possible consequences:

- Slight or minor injury

- The product or something in its vicinity may be damaged

Important Useful information

1.2 GENERAL SAFETY REQUIREMENTS

Danger

The operator must make sure:

- That the motor drive and the linked equipment are installed,commissioned and maintained only by personnel qualifiedby ALSTOM or under the direction of a supervisor qualifiedby ALSTOM and

- That during installation, commissioning and maintenance thesafety rules specified by the customer and all applicableregulations concerning accident prevention are observed.



Instructions for Installation and Maintenance2. DESCRIPTION


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2. DESCRIPTION

2.1 GENERAL

GENERAL

The ALSTOM high speed power earthing switch of the series STR are designed tofault to earth one high voltage phase by a fast closing of the earthing blade. Theclosing energy is given by a coil that it is charged during the opening operationand released by coil.

This switch is operated by a special manual mechanism that opens the earthingblade and charge the closing spring in the same time.

Operating sequence: Earthing blade in open position: closing spring charged and ready to close.

Closing impulse (local or remote): earthing blade fast closing.

An electrical impulse (local or remote) energizes the releasing coil (2.8 Fig. 2A)that, acting on the locking levers (2.10 Fig. 2A), unlock the locking cam (2.9Fig. 2A) and get free the earthing blade (2.1 Fig. 2). At this point the energy ofthe closing spring (2.6 Fig. 2A) quickly closes the earthing blade (2.1 Fig. 2)and makes the male mobile contact (2.2 Fig. 2) to penetrate into the fingers ofthe fixed female contact (3.2 Fig. 2). The fixed contact assembly is equippedwith a shock absorber (3.5 Fig. 3) that stop the earthing blade (2.1 Fig. 2)absorbing the energy at the end of its travel.

Earthing blade in closed position: closing spring unloaded.

Manual operation (only local) to open the earthing switch and to charge theclosing spring.

During the manual opening operation, the vertical drive shaft turncounterclockwise by 135° and move the operating lever (5.7 Fig. 2A) bymeans of an angular reduction gear. The operating lever (5.7 Fig. 2A) acts onthe charging lever (2.7 Fig. 2A) which is connected to the earthing blade (2.1Fig. 2), to the closing spring (2.6 Fig. 2A) and to the locking cam (2.9 Fig. 2A).

During this operation the earthing blade (2.1 Fig. 2) turns about 90° from thefully closed position to the fully open position, the closing spring (2.6 Fig. 2A) ischarged and the locking cam (2.9 Fig. 2A) is locked by a pin (2.11 Fig. 2A) ofthe locking lever (2.10 Fig. 2A). At this point the high speed power earthingswitch is restored and ready to close.

Important

After each opening operation, the manual mechanism has to be inthe restore position. This position is indicated by a label fixed onoutput shaft device.



Instructions for Installation and Maintenance2. DESCRIPTION


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All elements through which current flows have been standardized and tested withshort-circuit current.

The equipment is constructed in compliance with the following standards: Italy CEI EN 62271-102;

US ANSI C37 from 30 to 37 NEMA SAG 06;

UK BS EN 62271-102;

Europe IEC 62271-102.

For better understanding, the examination of the figures of this manual should bealways combined with the careful study of the DIN-… installation drawings thatconcern your specific order.



Instructions for Installation and Maintenance3. PACKAGING AND SHIPMENT


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3. PACKAGING AND SHIPMENTAll the items of the equipment are shipped in cases (crates), which must be

handled with care in accordance with the standard symbols on the sides of thecontainers.

3.1 TYPES OF PACKAGES

Shipment packaging is designed to fully protect the shipping units againstmechanical damage and against weather during transportation, unloading andhandling on site. It ensures that the product is not damaged and that all qualityfeatures, that are guaranteed and tested in all stages of production, remainunaltered.

3.1.1 Shipping casesThe shipping cases are strong, plywood-covered wooden crates, covered on thesides and reinforced internally with wooden boards. Special-shape wood-piecesare fastened to the bottom of the crates, and if needed to the sides too, in order tohold the content fast; if needed the shaped pieces are lined with foam to dampshocks to the content.

If needed, the content is wrapped in plastic film or contained in special boxesplaced on the bottom of the crate.

In order to ensure adequate ventilation, the shipping cases are equipped withweatherproof openings.

3.2 SHIPPING UNITS

The subdivision of each switchgear into shipping units is devised to speed up theinstallation on site and simplify the handling of the shipping units.

ImportantThe subdivision is detailed in the Packing List and reported in therelevant DIN.

Refer to the DIN for the identification of the parts also.



Instructions for Installation and Maintenance4. RECEIPT AND STORAGE


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4. RECEIPT AND STORAGE

4.1 RECEIPTAs soon as you receive the crates, inspect the content of each package and makesure that there is no damage and that all the items written in the packing list arethere.

Damaged items or discrepancies between content and packing list must bereported to ALSTOM immediately.

If after the inspection the cases should be relocated or stored for a long time,restore them to the original conditions.

When handling or unloading the cases, take care not to damage the equipment.

4.2 STORAGE

Place the packages in a dry and sheltered location, or if outdoor, make sure thearea is drained well.

For outdoor storage, the place should be dry and ventilated and the crates shouldbe raised at least 10 cm from the ground with wooden beams.

Important Concerning the storage of the drive, consult the specificinstruction manual D-… for the suitable procedure.



Instructions for Installation and Maintenance5. UNPACKING AND LIFTING


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5. UNPACKING AND LIFTINGUnpack the materials with care in order to avoid loosing or damaging any items.

Handle the complete units taking care especially of porcelain insulators even ifalready assembled.

Open the shipping cases on site just before installation, in a position where thehoisting equipment may hook the materials with ease.

Sling the material with an adequate lifting apparatus, as shown in Figure A.

Parts with weight less than 25 kg can be handled by hand.

DangerConcerning the lifting of the drive, see the instruction manualon the specific installation and maintenance procedures for thedevice.



Instructions for Installation and Maintenance5. UNPACKING AND LIFTING


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FIG. A: LIFTING THE UNITS OF THE DISCONNECTOR



Instructions for Installation and Maintenance6. INSTALLATION AND ADJUSTMENT


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6. INSTALLATION AND ADJUSTMENT6.1 CONDITIONS AND PRELIMINARY OPERATIONS BEFORE INSTALLATION

a) To install correctly the switchgears, the connection dimensions of buildingworks and steel works must comply with the specific DIN-… installationdrawings of your order.

b) In addition, consult the specific instructions manuals of the drive D-... of yourorder.

c) Screws, bolts and nuts must be tightened with a torque wrench with thetorque values of the table of Attachment "B".

d) Prepare and treat the permanent contact surfaces of live parts, through whichcurrent will flow (e.g. the contact surface between the terminal connection

pad or shank and the clamp of the line conductor) as follows: Wipe off any trace of grease from the contact surfaces with non-abrasive

solvent. If the surfaces are oxidized, clean them up with a steel brush orfine abrasive paper;

Cover them immediately with antioxidant paste;

Connect the surfaces as soon as possible.

e) For the switch of type STR, install the units in the following sequence:

complete unit of the single-pole switch;

drive of the disconnector; vertical drive shaft,

6.2 INSTALLATION OF THE STR EARTHING SWITCH

6.2.1 Single-pole disconnector unit (Fig. 1)

Lift, as shown in Figure A, the full assembled single-pole switch unit and, afterchecking that the arrangement of the equipment is correct, in accordance with thespecific DIN-.… installation drawing, approach the fixed base (5.0 Fig. 1) to the

support structure, with the fastening holes aligned.Fasten temporarily the base (5.0 Fig. 1) to the support structure.

Release the lifting apparatus.

With the spirit level check that the full assembled single-pole switch unit is verticalin two perpendicular directions. If needed shim with the specific C-washers on thebolts, between the support structure and the fixed the base, until the unit isadequately vertical.

Fasten finally the base (5.0 Fig. 1) to the structure and make sure that duringfastening no deformation takes place altering the adjustments already carried out.

If needed repeat the operations above.





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6.2.2 Drive of the disconnector (Fig. 1, 7)

ImportantBefore carrying out the installation, check that the serialnumber of the drive is the same as the serial number of theswitchgear.

DangerConcerning the lifting of the drive, see the instruction manualon the specific installation and maintenance procedures for thedevice.

Lift the drive and take the back of the device toward the support structure and takecare that the holes (7.11 Fig. 7) on the drive match those on the structure. Installand fasten temporarily the bolts; do not tighten them.

Release the lifting apparatus.

Check also that the drive is horizontal in two perpendicular directions, if neededshim the fastening connections.

If needed, loosen the bolts that fasten the drive to the structure, raise or lower thedrive and then tighten the bolts again, in order to get - when the adjustment iscomplete - the exact dimensions shown in the specific DIN-… installation drawing.

6.2.3 Vertical drive shaft (Fig. 1, 5, 5A, 7)

Set by manual the earthing blade fully open position.

Caution!

In the open position the closing spring is charged, so theearthing blade is ready to fast close. Do not tamper with theopening/recharging lever, keep away your hands from themechanism of the live part and stay away from the path of themobile arm.

Insert the crank in the manual mechanism and turning counterclockwise; theoutput clamp (7.12 Fig. 7) will rotate about 135° until the fully charged positiontouching the end stop.

Important

In order to ensure the best grip, before installing the driveshaft of the switchgear, polish with abrasive paper the lowerpart of the shaft for a length of about 150 mm.

Check also that the internal surface of the clamp is free fromany trace of grease or other impurities.

Connect the upper side of the vertical drive shaft (7.8 Fig. 5) to the angularreduction gear (5.8 Fig. 5) by the hub (5.9 Fig. 5) and insert the lower end of thevertical drive shaft (7.8 Fig. 5) into the clamp (7.12 Fig. 7) of the drive.

Set the operating lever (5.7 Fig. 5) with an angle of about 35°-45°, as indicated inFigure 2A. In that position the earthing blade (2.1 Fig. 2) will move some degree tothe open direction but the operating lever will be always in touch with the charginglever (2.7 Fig. 2A).

Set by manual operation the manual mechanism in the restore position by turningclockwise the crank until the restore position. In this position the operating lever(5.7 Fig. 5) must be horizontal, as shown in Figure 2A.





D0611-03-EN13 / 38

Tighten the clamp (7.12 Fig. 7) with the screws (7.10 Fig. 7) - with a torque ofaround 80 Nm - to lock the shaft. In order to assist in this operation, apply somenormal grease on the bolts.

Now the earthing blade (2.1 Fig. 2) is ready to close, the closing spring (2.6 Fig. 2)is charged and the mechanism is in the restore position.

Important

Only for set-up operations, in case of emergency:

The operation of manual closing by pushing directly the pin ofthe spring coil can be done only in absence of wire connectionsin the live part and in the auxiliaries.

By pushing the rod of the releasing coil (2.8 Fig. 2A), the earthing blade (2.1 Pc. 2)will rapidly close, than turning counterclockwise the crank open the earthing blade.During this operation, check that the operating lever (5.7 Fig. 2A) engages thecharging lever (2.7 Fig. 2A) and fully opens the earthing blade (2.1 Fig. 2). Once

touched the end stop, turn clockwise the crank until the neutral position is reached.If this operation is done manually, rotate the operating mechanism until the restposition.

If the operation is done in local or remote, after a rotation of 360° the operatingmechanism will stop in the rest position.

If the operating mechanism isn’t stopped in the rest position, the STR hasn’t theconsensus for closing.

6.3 ADJUSTMENT OF THE STR EARTHING SWITCH

The high speed power earthing blade is full assembled and adjusted in the workshop. Usually no more adjustments are needed in site with the exception offollowing ones described below.

Check that the mobile arcing contact (2.4 Fig. 3) does not hard touch the fixedarcing contact (3.3 Fig. 3). During the closing operation, the mobile arcing contact(2.4 Fig. 3) must creep close to the lower surface of the fixed arcing contact (3.3Fig. 3) enough to guarantee a good electrical contact.

To ensure this situation, bend the fixed arcing contact (3.3 Fig. 3); down if it’s toofar or up if it hard touches the mobile arcing contact (2.4 Fig. 3).



Instructions for Installation and Maintenance7. CONNECTIONS, FINAL CHECKS AND FINE-TUNING


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7. CONNECTIONS, FINAL CHECKS AND FINE-TUNING

7.1 CONNECTIONS

Danger

Connect to the station earthing system all earthing points.

Connect electrically the drive in accordance with the wiringdiagrams supplied.

Connect adequately the high-voltage conductors to the lineconnection terminals.

Check that acceptable mechanical loads on the disconnector, asindicated on the installation drawing, are not exceeded.

7.2 FINAL CHECKS AND FINE-TUNING

Carry out some manual and motor operations and check that:• In the fully closed and fully open positions, the indicators (plates) located on

the hub of the disc reach exactly the reference marks provided on the platefixed on the top of the drive;

• During CLOSING, the coupling of the male and female contacts occurscorrectly;

• At the rated voltage, the current consumption of the motor does not exceedthe value indicated in the wiring diagram.

When all checks are complete, remove the plastic gaiter that protects the flexibleconductor at the base of the mobile arm during transport and handling.



Instructions for Installation and Maintenance8. MAINTENANCE PLAN


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8. MAINTENANCE PLANThe switchgears do not require special maintenance. We recommend, however, in

order to ensure the correct operation of the equipment, to carry out routine checksand maintenance actions, especially on the component parts which are mostsensitive or subject to wear.

The frequency of checks and maintenance actions depends on the number ofoperations (1.000, 2.000, 3000 or 10.000) that have been guaranteed for theequipment supplied.

In case of coastal and other corrosive and contaminated environments, every twoyears it is mandatory to check and eventually to restore the grease on theexposed parts.

In order to keep the guarantee of the disconnector in force, routine checks andmaintenance operations must comply with the following table.





D0611-03-EN16 / 38

TABLE NTC-1955/E

FREQUENCY OF ACTIONSCONDITION OF

SWITCHGEAR

TYPE OF ACTION TO PERFORM IN COMPLIANCE WITH

THE RELEVANT INSTALLATION INSTRUCTIONS Guaranteed

operations:1,000

Guaranteed

operations:2,000

Guaranteed

operations:3,000

Guaranteed

operations:10,000

A – SWITCHGEARIN SERVICE

MINOR INSPECTION

Verify:

During siteinspectionor, in any

case, every2 years


case, every2 years


case, every3 years


case, every4 years

A.1) That the mechanical parts of the switchgear and ofthe protection surfaces are not damaged.

A.2) That the sheaths of the low voltage cables and ofthe earthing cables are not damaged.

A.3) That the insulators are not damaged and thatthere is no deposit or fouling on their surfaces.

A.4) That the drive (operating mechanism) is in workingorder

OPTIONAL Verify heating with a thermal detectorB – SWITCHGEAROUT OF SERVICE

INSPECTION OF SWITCHGEAR Every 5years or

every 500operations

Every 5years or

every 1,000operations

Every 6years or


Every 8years or


B.1) Carry out the checks A.1 - A.2 - A.3B.2) Verify that the live parts are cleanB.3) Measure the resistance of the live partsB.4) Check that bolts are tightB.5) Check the operation of local controlsB.6) Check manual operationB.7) Check the correct coupling of main contactsB.8) Check the condition of the contacts surfacesB.9) Check that mechanical parts are adequately

lubricated (Fig. “Lubrication and greasing”))

INSPECTION OF THE DRIVE

B.10) Verify that all mechanical and electricalcomponents, cables and earthing connections arenot damaged

B.11) Verify the correct operation of the followingelectrical components:- anti-condensation and heating resistance (if any)- motor protection automatic switch- electromechanical interlocking device

C – SWITCHGEAROUT OF SERVICE

MAJOR INSPECTION Every 10years or


Every 10years or


Every 12years or


Every 15years or

every10,000

operationsC.1) Full check of the switchgear as per section B.C.2) Check the condition and the wear of the main

components, the condition of the insulators and themechanical adjustments performed during firstinstallation (see installation manual). Verify thatmechanical parts are adequately lubricated (Fig.“Lubrication and greasing”)). If you find anydeviation, restore the required conditions. Ifreplacement of units or components is required,comply with the procedures in the installationmanual. In case of troubles or doubts on how torestore correctly the required conditions, contactALSTOM.





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PREVENTIVE MAINTENANCE PLAN OF SWITCHGEARGUARANTEED UP TO 1,000 OPERATIONS


MAJOR INSPECTIONEvery 10 years / 2000 operations

Compliant ?

INSPECTIONEvery 5 years / 1000 operations

Compliant?

MINOR INSPECTIONMin. every two years

CORRECTIONNO

CORRECTIONNO

YES

YES

IN SERVICE

OUT OF SERVICE

OUT OF SERVICE

EQUIPMENTIN SERVICE


Compliant?


Compliant?


CORRECTIONNO

CORRECTIONNO

YES

YES

IN SERVICE

OUT OF SERVICE

OUT OF SERVICE

EQUIPMENT

IN SERVICE





D0611-03-EN18 / 38




Compliant ?


Compliant ?


CORRECTIONNO

CORRECTIONNO

YES

YES

IN SERVICE

OUT OF SERVICE

OUT OF SERVICE

EQUIPMENTIN SERVICE


Compliant ?


Compliant?


CORRECTIONNO

CORRECTIONNO

YES

YES

IN SERVICE

OUT OF SERVICE

OUT OF SERVICE

EQUIPMENT

IN SERVICE



Instructions for Installation and Maintenance9. DISASSEMBLING THE EQUIPMENT AND REPLACEMENT

OF MAIN PARTS


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9. DISASSEMBLING THE EQUIPMENT AND REPLACEMENT OFMAIN PARTS

9.1 DISASSEMBLING THE EQUIPMENT

Danger

WARNING! Before carrying out any of the followingoperations, make sure that:

a) the switch is in the OPEN position;

b) both the incoming and outgoing high-voltage conductors arevisibly connected to the earth;

c) the operating mechanism is disconnected from all low-voltageconductors.

9.1.1 Disconnection• Disconnect all high-voltage conductors from the line terminals.

• Disconnect all low-voltage conductors from the drive.

9.1.2 Disassembly

With the same tools used during the installation, but in a sequence reverse to thatof Section 6, remove the parts in the following sequence:

STR High Speed Power Earthing Switch:

Vertical drive shaft of the switch;

Manual drive of the switch;

Complete unit of the single-pole switch;

When disassembly is complete, store correctly all components.

9.2 DISASSEMBLING THE EQUIPMENT AND REPLACEMENT OF MAIN PARTS

Danger

WARNING! Before carrying out any of the followingoperations, make sure that:

a) the switch is in the OPEN position;

b) both the incoming and outgoing high-voltage conductors are

visibly connected to the earth;



Instructions for Installation and Maintenance9. DISASSEMBLING THE EQUIPMENT AND REPLACEMENT

OF MAIN PARTS


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9.2.1 Mobile contact of the disconnector (Fig. 2)

To replace the male mobile contact (2.2 Fig. 3) with the relevant mobile arcingcontact (2.4 Fig. 3), proceed as follows:

Set the disconnector to the OPEN position;

Remove the contact (2.2 Fig. 3) with the relevant mobile arcing contact (2.4Fig. 3), after unscrewing the screws (2.3 Fig. 3);

Clean all contact surfaces of the new contact and of the mobile arm and applya thin layer of antioxidant paste;

Install the new contact (2.2 Fig. 3) with the relevant mobile arcing contact (2.4Fig. 3) and fasten it with the screws (2.3 Fig. 3) removed previously.

9.2.2 Fixed contacts (Fig. 2)

To replace the fixed female contact fingers (3.2 Fig. 3) and the relevant fixedarcing contact (3.3 Fig. 3), proceed as follows: Set the disconnector to the OPEN position;

Remove the fixed female contact fingers (3.2 Fig. 3) and the relevant fixedarcing contact (3.3 Fig. 3), after unscrewing the screws (3.4 Fig. 3);

Clean all contact surfaces of the new blades and of the support and apply athin layer of antioxidant paste;

Install the new fixed female contact fingers (3.2 Fig. 3) and the relevant fixedarcing contact (3.3 Fig. 3) and fasten them with the screws (3.4 Fig. 3)removed previously.

9.2.3 Drive (Fig. 7)

To replace drive - if needed - proceed as follows: Set the switchgear to the OPEN position;

Disconnect the flexible conductor from the vertical drive shaft and disconnectall electric connections;

Uncouple the vertical drive shaft;

Sling the drive and lift it slightly to put the sling in tension;

Remove the four bolts that fasten the cabinet to the support structure; Pull out the drive horizontally and move it to the required place.

Proceed as instructed in Section 6, to install the new drive.



Instructions for Installation and Maintenance10. LIST OF TOOLS


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10. LIST OF TOOLSCommon tools should be adequate for the installation and maintenance of these

disconnectors/earthing-switches such as box wrenches, open-end wrenches,socket wrenches, torque wrenches with torque up to 200 Nm, screwdrivers, pliers,hammers, spirit level, mason's rule, tape measure, etc.

In some cases, is better to use long socket wrenches in place of the standardwrenches, as shown in the following picture.

Fig. F: preferable socket wrenches

To lift the insulators, use eyebolts suitable for the top flange.

To block the levers, use a drill with drill bit ø4mm

To lift the units, a truck crane equipped with adequate ropes (slings) with eyes asshown in Figure A is required.

No other special tools are therefore required.

standardwrench

long wrench



Instructions for Installation and Maintenance11. SPARE PARTS


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11. SPARE PARTSSend any order for spare parts to:

ALSTOM GRID S.p.A.Via Meucci, 22

30020 Noventa di Piave -VE- ITALY

(Fax: +39 0421-65254 - Tel. +39 0421-309511)

State:

• The number and the revision of the manual that you can find on the coverpage;

• The number of the figure and the number of the item in the figure;

• The customer's order number, the type of disconnector and its serial number.

NOTE : When replacing live parts through which current will flow, the surfaces thatare permanently in contact must be treated as follows (e.g. the contact surfacebetween the terminal pad and the fixed-contact support):• Wipe off any trace of grease from the contact surfaces with non-abrasive

solvent. If the surfaces are oxidized, clean them up with a steel brush or fineemery paper;

• Cover immediately with antioxidant compound;

• Connect the surfaces as soon as possible.

Surfaces through which wiping-contact current flows (e.g. mobile contact blades)must be covered with a thin layer of grease NYOGEL 760G (to be restored at eachinspection).





Instructions for Installation and MaintenanceFIGURES


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Key of the installation diagram for the STR single-pole earthing switch (Fig. 1)

1.1 POST INSULATOR

2.0 LIVE PART ASSEMBLY

2.1 EARTHING BLADE/MOBILE ARM

3.0 FIXED CONTACT ASSEMBLY

5.0 LOWER PART ASSEMBLY

7.3 MANUAL DRIVE

7.8 VERTICAL DRIVE SHAFT





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FIG. 2: POLE ASSEMBLY

1.1 POST INSULATOR

2.0 LIVE PART ASSEMBLY


2.2 MOBILE MALE CONTACT

3.0 FIXED FEMALE CONTACT ASSEMBLY

3.1 TERMINAL PAD

3.2 FEMALE CONTACT FINGERS


5.1 EARTHING SCREW





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FIG. 2A: DETAIL OF THE LOWER PART





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FIG. 2B: DETAIL OF THE EARTHING BLADE/MOBILE ARM





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Key of the lower part and earthing blade/mobile arm (Fig. 2A, 2B)



2.3 MOBILE MALE CONTACT FIXING SCREWS2.4 MOBILE ARCING CONTACT

2.5 MOBILE ARCING CONTACT FIXING SCREWS

2.6 SPIRAL SPRING

2.7 OPENING LEVER

2.8 RELEASING COIL

2.9 CAM

2.10 LOCKING LEVER

2.11 LOCKING PIN

2.12 AUXILIARY CONTACTS DEVICE

2.13 RESET SPRING

2.14 CABLE ENTRY

2.15 ENCLOSURE


5.2 EARTHING CONNECTION STRAP

5.7 OPENING/RECHARGING LEVER





D0611-03-EN29 / 38

FIG. 3: FEMALE FIXED CONTACT



2.3 MOBILE MALE CONTACT FIXING SCREWS

2.4 MOBILE ARCING CONTACT

3.0 FEMALE FIXED CONTACT ASSEMBLY3.1 TERMINAL PAD

3.2 FEMALE CONTACT FINGERS

3.3 FIXED ARCING CONTACT

3.4 FEMALE CONTACT FINGERS FIXING SCREWS

3.5 SHOCK ABSORBER

3.6 VITILIVE PART FIXING CREWS

3.7 LIVE PART SUPPORT





D0611-03-EN30 / 38

FIG. 5: LOWER PART





D0611-03-EN31 / 38

Key of the assembly of the fixed base of the S3F disconnector (Fig. 5, 5A)



5.1 M12 EARTHING SCREW5.2 EARTHING STRAP

5.3 POST INSULATOR MOUNTING SURFACE

5.4 POST INSULATOR FIXING SCREWS

5.5 EARTHING BLADE/MOBILE ARM SUPPORT

5.6 EARTHING BLADE/MOBILE ARM SUPPORT FIXING SCREWS

5.7 OPERATHING LEVER

5.8 ANGULAR REDUCTION GEAR

5.9 JOINT HUB

5.10 ANGULAR REDUCTION GEAR SUPPORTS

5.11 LOWER PART MOUNTING HOLES7.8 VERTICAL DRIVE SHAFT





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FIG. 7: VERTICAL DRIVE SHAFT AND MANUAL DRIVE

7.9

7.14

7.10

7.9

7.12

7.10

7.8

150

7.14

7.3

7.127.11

7.3 MANUAL DRIVE

7.8 VERTICAL DRIVE SHAFT OF THE EARTHING SWITCH

7.9 CLAMP SUPPORT

7.10 SHAFT FASTENING BOLTS (SCREW, PLAIN WASHER, NUT)

7.11 HOLES FOR FASTENING TO THE STRUCTURE

7.12 CLAMP

7.14 EARTHING STRANDED CABLE

7.16 EARTHING BOLT





D0611-03-EN33 / 38

FIG. 10: LUBRICATION AND GREASING

NYOGEL 760G (alternatively: RHEOLUBE 365)These parts have already been lubricated in our workshop. The following lubrications should becarried out as directed in Section 8. An adequate amount of the product is supplied with thedisconnector and it shall be enough to carry out the lubrication during the first maintenance afterthe installation.

MULTI-F-S (alternatively: SILAN)These parts have already been lubricated in our workshop. The following lubrications should becarried out as directed in Section 8. An adequate amount of the product is supplied with thedisconnector and it shall be enough to carry out the lubrication during the first maintenance after

the installation.





D0611-03-EN34 / 38

ATTACHMENT “A”: SPECIFICATIONS OF THE STR DISCONNECTORS

Rated Voltage [ U r ] kV 145

Rated Current [ I r ] A N.A.

Rated Short-Time withstand Current [ I k ], up to…Rated Peak withstand Current [ I p ], up to…

kA x skA

25 x 162,5

Rated Power Frequency Withstand voltage [ U d ]- To ground and between poles kV 275- Across the isolating distance kV N.A.

Rated Lightning Impulse Withstand Voltage [ U p ]- To ground and between poles kV 650- Across the isolating distance kV N.A.

Rated Switching Impulse Withstand Voltage [ U s ]- To ground and between poles kV N.A.- Across the isolating distance kV N.A.

See the instruction manual of the drive for the respective technical data.



Instructions for Installation and MaintenanceATTACHMENT "B": TIGHTENING TORQUES FOR SCREWS &BOLTS


D0611-03-EN35 / 38

ATTACHMENT "B": TIGHTENING TORQUES FOR SCREWS & BOLTS

STAINLESS STEEL HOT-ZINCED STEELNominal diameter SCREWS

NmBOLTS

NmSCREWS

NmBOLTS

Nm

M4 – 1.5 – –

M5 – 3 – –

M6 4.5 5 – –

M8 11 12 – –

M10 19 23 – –

M12 32 40 58 65

M14 50 63 90 105M16 78 95 140 160

M18 – 126 190 220

M20 – 175 270 300

M22 – 240 360 400

M24 – 320 470 520



Instructions for Installation and MaintenanceATTACHMENT "C": RECORDING FORM FORCOMMISSIONING OF SWITCHGEAR


D0611-03-EN36 / 38

ATTACHMENT "C": RECORDING FORM FOR COMMISSIONING OF SWITCHGEAR

Customer .................. ...................... ..................... .................... S/S .......................................................................................................

Order .................. ...................... ..................... ..................... ...... Type of equipment ..............................................................................

Serial No. .................. ...................... ..................... .................... Wiring diagram DEL ............................................................................

Installation drawing DIN .................... ..................... ................. Installation instructions ......................................................................

1) CHECKS:

Sign after test Remarks or measured values

1.1 Dimensional check according to installation drawing

1.2 Verification of verticality of installed insulators

1.3 Verification of correct installation of drive

1.4 Verification of correct installation of shafts and transmissionscomponents

1.5 Verification of alignment and coupling of f ixed and mobilecontacts

2) TESTS OF OPERATION:

Sign after test Remarks or measured values

2.1 Perform 5 manual operations and verify that the opening andclosing movements are correct

2.2 Perform 5 motor operations and check that the end positionsare correctly reached

2.3Verify the correct signaling of the auxiliary contacts

3) CURRENT CONSUMPTION OF MOTOR: (Maximum value excluded the starting peak )

3.1 Perform 5 operations (C. O.) and write the average value of the results

POLEDISCONNECTOR EARTHING SWITCH

( mobile contact side )

EARTHING SWITCH

( fixed contact side )VOLTAGE

CLOSING OPENING CLOSING OPENING CLOSING OPENING

A (A) (A) (A) (A) (A) (A) (V)

B (A) (A) (A) (A) (A) (A) (V)

C (A) (A) (A) (A) (A) (A) (V)

4) CONTACT RESISTANCE OF MAIN CIRCUIT:

POLE RESISTANCE ENV. TEMP. CURRENT

A (µΩ ) (°C) (A)

4.1 Reference value........... µΩ at 20 °C. + 20 % B (µΩ ) (°C) (A)

C (µΩ ) (°C) (A)

After the above verifications we declare that, as far as we are concerned, the switchgear is suitable to be put in service.

Signature: Date:





© ALSTOM 2010. All rights reserved. Information contained in this document is indicativeonly. No representation or warranty is given or should be relied on that it is complete orcorrect or will apply to any particular project. This will depend on the technical andcommercial circumstances. It is provided without liability and is subject to change without

notice. Reproduction, use or disclosure to third parties, without express written authority, isstrictly prohibited.

Alstom Grid

© - ALSTOM 2010. ALSTOM, the ALSTOMlogo and any alternative version thereof aretrademarks and service marks of ALSTOM.The other names mentioned, registered ornot, are the property of their respectivecompanies. The technical and other datacontained in this document is provided forinformation only. Neither ALSTOM, its officersand employees accept responsibility for orshould be taken as making any representationor warranty (whether express or implied) as tothe accuracy or completeness of such data orthe achievement of any projectedperformance criteria where these areindicated. ALSTOM reserves the right torevise or change this data at any time withoutfurther notice.Photo credit: ALSTOM GRID SpA

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Instruction Manual Alstom d0611-03-En