CA225007EN ffective February 2021 Ne issue SERIES EVER-Tap

Contents

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

CATALOG NUMBER INFORMATION . . . . . . . . . . . . . . . . . . . 3

STANDARD FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

OPTIONAL ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

ARRESTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Series surge arresters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Shunt arresters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

CL-7 VOLTAGE REGULATOR CONTROL . . . . . . . . . . . . . . . . . 6

OPTIONAL CL-7 CONTROL FEATURES . . . . . . . . . . . . . . . . . 7

CONSTRUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Core and coil assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

The EVER-Tap™ tap changer . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Position indicator and ADD-AMP capability . . . . . . . . . . . . . . . . 8

Voltage RegulatorsCatalog DataCA225007EN

Effective February 2021 New issue

COOPER POWERSERIES

EVER-Tap™ voltage regulators

GeneralEaton’s Cooper Power™ series EVER-Tap™ step voltage regulator is the result of a significant collaboration between two industry leaders: Eaton and Maschinenfabrik Reinhausen GmbH . Eaton’s long-standing experience with step-voltage regulators and controls combined with Reinhausen’s industry proven RMV-II tap changer results in a reliable, efficient and flexible voltage regulating solution for your substation .

The EVER-Tap voltage regulator is a single-phase tap-changing autotransformer . EVER-Tap voltage regulators utilize the VACUTAP™ RMV-SVR load tap-changer . The vacuum interrupter switching of the VACUTAP RMV-SVR enables maintenance-free operation to 1,000,000 operations; an initial inspection of the tap changer is recommended after 500,000 operations . Inherent to the vacuum interrupting design, material and gas byproducts from tap changing do not contaminate the dielectric fluid . A clean operating environment inside the voltage regulator is maintained leading to extended tap-changer contact and coil winding life .

EVER-Tap voltage regulators offer an alternative to the industry staple on-load tap changer (OLTC) . The single-phase voltage regulator offers the flexibility of independent voltage regulation on each phase as opposed to regulating three phases to the voltage requirements of a single phase . This can be very beneficial where loads are not balanced . Regulation settings can also be tailored to meet the needs of individual phases . When service is required, a single voltage regulator can be bypassed and removed from service without shutting down the entire substation .

Eaton’s Cooper Power series voltage regulators regulate distribution line voltages from 10% raise (boost) to 10% lower (buck) in 32 steps of approximately 5/8% each . EVER-Tap ratings are available from 7620 volts (95 kV BIL) to 34,500 volts (150 kV BIL) for 60 Hz and 50 Hz systems .

Internal potential winding taps and an external ratio correction transformer are provided on all ratings so that each regulator may be applied to more than one system voltage . EVER-Tap voltage regulators incorporate a substation base with pad-mounting provisions .

The EVER-Tap package includes as a standard the innovative CL-7 voltage regulator control . This control features superior accuracy, reliability, and serviceability . Continuity of service is assured by the rugged, service-proven tap-changer and autotransformer functioning with the control .

Eaton’s Cooper Power series voltage regulators are available with a full complement of standard features for routine applications, as well as a full line of optional accessories for unique applications .

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Catalog Data CA225007ENEffective February 2021


www.eaton.com/cooperpowerseries

Catalog number informationUse Table 1 as a guide when ordering voltage regulators or to interpret a voltage regulator catalog number .

Table 1 . Voltage regulator catalog number system

Description Catalog Number

Base Letters For a Voltage Regulator VR

Physical Configuration

VRXF = Pole - ONAN/ONAF Rated w/IDPT

S = Special

Nominal Voltage Rating

VRXX

3 = 7620

4 = 13800

5 = 14400

6 = 19920

7 = 24940

8 = 34500

9 = Special 60Hz

D = 11000

G = 15000

H = 16000

J = 17320

N = 22000

R = 33000

X = Special 50Hz

kVA Rating

VRXXXX

60 = 600

66 = 667

69 = 690

75 = 750

83 = 833

86 = 863

88 = 880

A1 = 1000

A2 = 1250

A3 = 1333

SP = Special

Losses

VRXXXXXK = Reoptimized Low Loss - 2018 Standard

X = Reoptimized Low Loss - 2009 Standard

S = Special

Control IdentifierVRXXXXXCL7

CL7 = CL-7

System UsageVRXXXXXCL71

1 = Single-Phase Regulator

Random Alphanumeric Character VRXXXXXCL71XXXXX

Tap Changer RevisionVRXXXXXXCL71XXXXXV

V = EVER-Tap

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4-Hole NEMA SpadeBushing

Cover

Internal AssemblyLifting Eyes

Pressure/VacuumGauge

Fluid Thermometer

Position indicator

Control Cable withQuick-Connect Plug

Lockable ControlBox with CL-7Control

Bolt-DownProvisions (4)

Drain Valve withSampling Device

Filter PressConnection

Fluid Level SightGauge

MOV-Series Arrester

Cooling Fans

Hand-Hole Cover

Shunt ArresterMounting Boss

Junction Box

Lift Lug (4)

Cooling Radiators

Ground Pad

Laser-Etched Nameplate (2)

Control Box Ground Boss

Pressure Relief Valve

Substation Base

Figure 1 . External features on the EVER-Tap voltage regulator

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Standard featuresA sealed-tank construction allows the use of a 65 °C rise insulation system in 55 °C rise rated designs to provide an additional 12% capacity above the nameplate rating without loss of normal insulation life . Additional load capacity is stated on the nameplate, this ADD-AMP™ feature is available as long as the tap-changer’s maximum current rating is not exceeded .

The unit construction cover suspends the internal assembly, consisting of the core-and-coil assembly, tap-changer, and the reactor, for ease of inspection and maintenance .

All Eaton Cooper Power series voltage regulators are manufactured and tested to the IEEE Std C57 .15™-2017™/IEC 60076-21:2018-12 standard .

● CL-7 control

● Reinhausen RMV-II Vacuum tap changer

● Internal differential potential transformer

● Position indicator with ADD-AMP adjustment

● Two laser-etched nameplates

● Lifting lugs

● Oil drain valve and sampling device

● Upper filter press connection

● Oil sight gauge

● Mounting provisions for shunt arresters

● High-creep bushings with 4-hole NEMA™ H-spades

● Bolt-down provisions

● Substation base

● External series arrester

● Automatic pressure relief device

● Handhole

● Control cabinet with removable front panel

● Ratio correction transformer

● Quick-connect control cables

Optional accessories● Dial Type Liquid Thermometer Gauge with or without

alarm contacts

● Dial Type Oil Level Gauge with or without alarm contacts

● Pressure/vacuum gauge

● Pressure/vacuum contacts

● Rapid rise relay

● Analog temperature sensor

● Analog pressure/vacuum sensor

● Pressure/vacuum bleeder valve

● Stainless steel tank and hardware

● Stainless steel control box

● NEMA 3 or 3R control box

● Long control box

● Double-sized control box

● FR3 dielectric fluid

● Auxiliary power winding

● Shunt arresters

● Extra-length control cables

● Armored or partially armored control cable

● Elevating structure

● Cooling fans

● Nameplates in alternate languages or metric units

● Stainless steel nameplate

● Alternate top-coat paint color

● Universal interface control cable connector (Note: EVER-Tap voltage regulators are operated by a CL-7 control only)

Arresters

Series surge arrestersAll EVER-Tap voltage regulators are equipped with a bypass arrester connected across the series winding between the source (S) and load (L) bushings . This bypass arrester limits the voltage developed across the series winding during lightning strikes, switching surges, and line faults . A MOV type series surge arrester of 3 kV offers series winding protection on all regulators except those rated 22 kV and above, which have a 6 kV MOV-type series surge arrester .

Shunt arrestersA shunt arrester is a recommended accessory on the EVER-Tap voltage regulator for protection of the shunt winding . The shunt arrester is a direct connected arrester mounted on the tank and is connected between the load bushing and ground . For additional protection, a shunt arrester may also be installed between the source bushing and ground . It is recommended that arresters be applied to all non-grounded bushings . Shunt arrester application data is listed in Table 2 .

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Table 2 . Shunt Arrester Application Data

RegulatorVoltageRating

Nominal System Voltages(volts)

RecommendedMOV ShuntArresterRatings(kV)

Delta orSingle-phase

Multi-groundedWye

2500/4330Y2400 2400/4160

32500 2500/4300

5000/8660Y

4160 4160/7200

64330 4330/7500

4800 4800/8320

5000 5000/8660

7620/13200Y

6900 6900/11950

107200 7200/12470

7620 7620/13200

7970 7970/13800

11000 11000 15

13800

12000

1512470

13200

13800

14400/24940Y13800/23900

1814400/24940

19920/34500GrdY 19920/34500 27

22000 22000 27

33000 33000 36

CL-7 voltage regulator control● Enhanced tap position tracking

● SAFE-TO-BYPASS Metering-PLUS™ safety feature

● Neutral indicating dual LEDs

● Communications protocols resident to control:

– DNP3

– IEC 60870-5

– IEC 61850

– 2179

– MODBUS (Serial)

– MODBUS TCP/IP

● Role-based access control password system

● Digitally signed firmware for enhanced security

● LCD display (4x20 character)

● Alpha-numeric keypad

● Keypad special characters for secure passwords

● Reverse sensing modes (10 options) including:

– Locked Forward

– Bidirectional

– Bias Bidirectional

– Cogeneration

– Bias Cogeneration

● Dynamic voltage bandwidth

● Metering-PLUS™ one-touch data display

● General purpose discrete inputs (three)

● Control heater

● Source-side voltage calculated from tap position

● Internal-external power switch

● Automatic/manual control function switch

● Manual raise/lower toggle switch

● Position indicator drag hand reset switch

● Supervisory OFF switch (for use with SCADA)

● Multilingual display

– Spanish (Latin American)

– French (Canadian)

– Portuguese (Brazilian)

– Russian

● Six-digit operations counter

● Voltmeter test terminals

● External power connection

● Panel-mounted motor fuse

● Voltage limiter (“First House Protection”)

● Line drop compensation settings

● SOFT-ADD-AMP feature with adaptive functionality

● Duty Cycle Monitor (DCM)

● TIME-ON-TAP™ tap position tracking

● PMT™ Preventative Maintenance Tapping

● Tap-to-Neutral and Tap-to-Target

● Voltage reduction with five modes

● Digital metering package

– Instantaneous

– Demand (forward and reverse)

– Demand min/max time/date stamped

● Data profiler time/date stamped metering

● Status alarms

● Data alarms

● Sequence of Events recording

● USB drive data port

● USB PC port

● Configurable logic

● Alternate configuration settings

● Auto Restore Local (restore settings with loss of SCADA)

● Three date formats

● Conformally coated circuit boards

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Optional CL-7 control features● Serial communications modules:

– RS-232 DB9

– Fiber Optic ST

– RS-485 TB, Isolated

● Ethernet communications modules

– 100BASE-LX10 Single-Mode FO LC

– 100BASE-FX Multi-Mode FO MT-RJ

– 100BASE-FX Multi-Mode FO ST

– 100BASE-FX Multi-Mode FO SC

● 10BASE-T/100BASE-TX (Copper) RJ45

● Multi-phase control with

– Neutral indicating dual LEDs (3)

– Voltmeter terminals (3-sets)

– Internal-external power switch (3)

– Motor fuse (3)

– Automatic/manual control function switch (3)

– Manual raise/lower toggle switch (3)

● Multi-phase operation modes (5)

● DeltaCalc advanced multi-phase operation

● Auxiliary analog input module

● Discrete I\O module (8 inputs/8 outputs)

● 13 .5 Vdc radio power supply

● Battery backup, 13 A-hr control power

● Substation battery power, 48/125 Vdc

● 240 Vac external power option

Figure 2 . CL-7 control with exclusive EVER-Tap external power connection

Construction

Core and coil assemblyEase of service is provided by the design of the core-and-coil, tap-changer, and reactor assembly . The entire assembly is cover suspended for ease of removal from the tank for inspection or maintenance .

The coil assembly features an aluminum strip in the series winding that achieves the optimum in ampere turn balance for exceptional strength under through-fault conditions .

Grain-oriented steel is used in the core, with a low reluctance lap joint . The rugged core clamp assembly secures the coil effectively and positions the core for the optimum in quiet operation and low core loss .

With sealed-tank construction, the external oxygen supply is eliminated from the tank environment . With the use of a 65 °C rise insulation system and designs with a nameplate rating of 55 °C, an additional 12% capacity is available from EVER-Tap without any loss of insulation life .

VACUTAP™ RMV-SVR tap-changersThe VACUTAP RMV-SVR load tap-changer manufactured by Maschinenfabrik Reinhausen GmbH has been incorporated into Eaton’s Cooper Power series EVER-Tap voltage regulator . These tap changers have a proven record over years of reliable service . The primary benefits of the RMV-SVR are as follows: Direct motor drive for simplicity and reliability; vacuum interrupting tap changer for extended contact life and reduced dielectric fluid contamination; low maintenance requirements with expected life to 1,000,000 operations; and fast operating speeds . RMV-SVR tap-changer features include: Neutral light switch; position indicator drive; safety limit switches; and an operations counter switch . The RMV-SVR load tap-changers meet IEEE and IEC standards for mechanical, electrical and thermal performance .

Figure 3 . VACUTAP RMV-SVR tap-changer

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Figure 4 . Position indicator

Position indicator and ADD-AMP capabilityExclusive to Eaton, the uniquely designed position indicator offers corrosion resistant materials, an oversized viewing area and a reset solenoid that is replaceable using a single thumbscrew . It is mounted on a junction box on the cover of the regulator, and is directly connected to the tap-changer by a flexible drive shaft passing through the junction box and terminal board via a sealing gland .

The indicator face is graduated in steps, numbered 1 through 16 on each side of zero . Zero designates neutral . Drag hands indicate the maximum and minimum positions attained during raise and lower operations . The drag hands are reset around the position indicator hand by operating the drag hand reset switch on the control front panel .

The ADD-AMP feature of EVER-Tap regulators allows increased current capacity by reducing the regulation range . This is accomplished by either setting limit switches in the position indicator (HARD-ADD-AMP feature) or enabling the SOFT-ADD-AMP feature in the CL-7 control to prevent the tap-changer from traveling beyond a set position in either the raise or lower directions . The limit switches have scales graduated in percent regulation, and are adjustable to specific values of 5, 6-1/4, 7-1/2, 8-3/4, and 10% regulation to alter the regulation range . The CL-7 control also allows for an Adaptive ADD-AMP feature which will automatically change the SOFT ADD-AMP setting based upon the current readings of the control .

The five possible load current ratings associated with the reduced regulation ranges are summarized in Table 5 and Table 6 . At each setting, a detent stop provides positive adjustment . Settings other than those with stops are not recommended . The raise and lower limits need not be the same value except for locations where reverse power flow is possible .

Table 3 . Standard Available Voltages (60 Hz)Nominal Voltage Standard Available Voltages*

7620 8000 7970 7620 7200 6930 4800 4160 240013800 13800 13200 12470 12000 7970 7620 7200 693014400 14400 13800 13200 12000 7970 7620 7200 693019920 19920 17200 16000 15242 14400 7970 7620 720034500** 34500 19920* Standard voltages will be shown as pinned voltage options on the voltage regulator nameplate.** Max BIL of 150 kV

Table 4 . Standard Available Voltages (50 Hz)Nominal Voltage Standard Available Voltages

11000 11600 11000 10000 6930 6600 6350 6000 5500

15000 15000 14400 13800

22000 22000 20000 19100 15000 12700 11000 10000

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Table 5 . ADD-AMP Capabilities of 60 Hz Ratings

RatedVolts

RatedkVA

Load Current Ratings (Amperes)*

Regulation Range

±10% ±8 3/4% ±7 1/2% ±6 1/4% ±5%

7620 95 kV BIL

667** 875 963 1050 1181 1400

833** 1093/1157 1202/1273 1312/1388 1476/1562 1749/1851

1000*** 1312 1443 1574 1771 2000

1380095 kV BIL

667 483 531 580 815 773

833 604 664 668 668 996

1000 725 798 870 979 1160

14400 150 kV BIL

667 463 509 556 625 741

720 500 550 600 675 800

833 578 636 694 780 925

1000 693 762 832 936 1109

1333 926 1018 1111 1250 1482

19920 150 kV BIL

667 335 369 402 452 536

833 418 460 502 564 669

1000 502 552 602 678 803

1250 628 691 754 848 1005

34500 150 kV BIL 1035 300 330 360 405 480

* Additional 12% increase in capacity is available due to the use of 65 °C winding rise insulation if the tap-changer’s maximum current rating has not been exceeded. For information on loading in excess of the values listed, contact your Eaton product representative.

** Regulators are capable of carrying current corresponding to rated kVA when operated at 7200 volts. *** Additional capacity available when unit is equipped with cooling fans. For information on loading in excess of the values listed, contact your Eaton product representative.

Table 6 . ADD-AMP Capabilities of 50 Hz RatingLoad Current Ratings (Amperes)*

Rated Volts

Rated kVA

Regulation Range

±10% ±8 3/4% ±7 1/2% ±6 1/4% ±5%

11000 660 600 660 720 810 960

880 800 880 960 1080 1280

1000 909 1000 1091 1227 1454

15000 600 400 440 480 540 640

750 500 550 600 675 800

1000 667 734 800 900 1067

22000 880 400 440 480 540 640

1000 455 501 546 614 728

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Eaton1000 Eaton BoulevardCleveland, OH 44122United StatesEaton.com

Eaton’s Power Systems Division2300 Badger DriveWaukesha, WI 53188United StatesEaton.com/cooperpowerseries

© 2021 EatonAll Rights ReservedPrinted in USAPublication No. CA225007ENFebruary 2021

Eaton is a registered trademark.

All other trademarks are property of their respective owners.

For Eaton's Cooper Power series product information call 1-877-277-4636 or visit: www.eaton.com/cooperpowerseries.

Documents

CA225007EN ffective February 2021 Ne issue SERIES EVER-Tap