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Eaton COOPER POWER SERIES Installation, Operation And Maintenance Instructions

Voltage regulator with quik-drive tap-changer
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Voltage Regulators
MN225008EN
VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer
Installation, Operation, and Maintenance Instructions
Effective February 2017
Supersedes May 2015
COOPER POWER
SERIES

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Summary of Contents for Eaton COOPER POWER SERIES

  • Page 1 COOPER POWER Voltage Regulators SERIES Effective February 2017 MN225008EN Supersedes May 2015 VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer Installation, Operation, and Maintenance Instructions...
  • Page 2 CONTENTS OF THIS DOCUMENT SHALL NOT BECOME PART OF OR MODIFY ANY CONTRACT BETWEEN THE PARTIES. In no event will Eaton be responsible to the purchaser or user in contract, in tort (including negligence), strict liability or otherwise for any special, indirect, incidental or consequential damage or loss whatsoever, including but not limited to...

  • Page 3: Table Of Contents

    VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer Contents DISCLAIMER OF WARRANTIES AND LIMITATION TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . .26 OF LIABILITY .

  • Page 4: Safety For Life

    FOR LIFE FOR LIFE Eaton meets or exceeds all applicable industry standards relating to product safety in its Cooper Power™ series products. We actively promote safe practices in the use and maintenance of our products through our service literature, instructional training programs, and the continuous efforts of all Eaton employees involved in product design, manufacture, marketing, and service.

  • Page 5: Introduction

    Eaton representative. Standards Acceptance and initial inspection Eaton’s Cooper Power series regulators are designed and tested in accordance with the following standards: The regulator is thoroughly tested and inspected at the IEEE Std C37 .90.1-2012™ standard factory.

  • Page 6: Product Information

    VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer Product information Description VR-32 voltage regulators from Eaton operate to keep voltage levels within programmed limits to improve power quality and are compatible with SCADA and automation distribution systems. Available in pole-, platform-, and pad-mounted and...
  • Page 7 VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer MOV-type series arrester Bushing connectors Junction box Threaded-stud bushing terminals Hand-hole cover Bushings Cover Internal assembly lifting eyes Upper filter press Position indicator connection Shunt-arrester mounting bosses Regulator lifting lugs Ball-type 25 C° insulating fluid level sight gauge Control cable with Quick-Disconnect plug...

  • Page 8: Installation

    VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer Installation Systems connections WARNING Pre-installation inspection Hazardous Voltage . Connect the “S” bushing to Before connecting the regulator to the line, make the the source, the “L ” bushing to the load . For Wye following inspection: connections, connect the “SL ”...
  • Page 9 VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer Figure 5 . Regulating a three-phase, three-wire circuit with two regulators (Open Delta) Control Control Control Figure 6 . Regulating a three-phase, four-wire, multi-grounded wye (star) circuit with three regulators (Wye) Control Control Control Figure 7 .

  • Page 10: Nameplates

    A switching module is also regulator into service. When calling Eaton for service or available for the pad-mounted units that enables bypass support-related issues, have the catalog number and serial switching;...
  • Page 11 VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer Figure 9 . Typical nameplatee: international 50-Hz design InstallatIon, operatIon, and MaIntenance InstructIons MN225008EN February 2017...

  • Page 12: Placing Regulator Into Service

    VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer Placing regulator into service After programming the control for basic operations, perform a control operational check of manual and automatic operations before completing the installation DANGER of the regulator. Regulators can be placed into service without interrupting load continuity by installing bypass and Explosion Hazard .
  • Page 13 VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer Procedure A: One bypass switch and two disconnect switches Procedure B: Regulator bypass-disconnect switch Verify from regulator nameplate that control circuit is Verify from regulator nameplate that control circuit is connected for proper regulated system voltage. connected for proper regulated system voltage.
  • Page 14 VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer Setting the manual (hard) limit switches otee: Refer to “Position indicator and ADD-AMP capability” on page 13 for a complete discussion of these features. Before setting the manual limit switches, be sure the new settings will not conflict with the present tap-changer position;...

  • Page 15: Removal From Service

    VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer Removal from service Verify the neutral position of the regulator using each of these four methods: otee: Before removing a regulator from service, you must Verify that the neutral indicator light on the return the regulator to neutral. Only a regulator in control is indicating the neutral position.

  • Page 16: Construction And Operation

    Construction and operation Drain valve with sampler . All regulators have a 1" drain valve with sampling device and a 1" upper filter press Eaton’s Cooper Power series VR-32 voltage regulators are connection. designed, manufactured, and tested in accordance with Hand-hole cover .

  • Page 17: Position Indicator And Add-Amp Capability

    VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer Position indicator and ADD-AMP capability set forth by the control or the position indicator, whichever limit is of a lower regulation percentage. Regulators rated below 668 A include an ADD-AMP If Soft ADD-AMP limits have been programmed into otee: feature which permits additional current-carrying capacity the control and the position indicator limit switches...

  • Page 18: Internal Construction And Wiring

    VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer Internal construction and wiring The bridging reactor is a core-form design, consisting of a coil on each leg of one core. The inside half of one coil The regulators are designed such that they can be partially is connected to the outside half of the other coil and vice or completely untanked for inspection and maintenance versa, providing equal current in each half of the reactor...
  • Page 19 VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer Source Load C2 C1 CONTROL Figure 13 . Power circuit—series winding located on the source-side, ANSI ® Type B Source Load C2 C1 CONTROL Figure 14 . Power circuit—series winding located on the load-side, ANSI ® Type A InstallatIon, operatIon, and MaIntenance InstructIons MN225008EN February 2017...
  • Page 20 VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer C2 C1 Source Load CONTROL Figure 15 . Power circuit – series auto transformer, Type AX (similar characteristics to Type A) C2 C1 Source Load CONTROL Figure 16 . Power circuit – series transformer, Type TX InstallatIon, operatIon, and MaIntenance InstructIons MN225008EN February 2017...
  • Page 21 VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer Voltage circuits such a circuit should have the capability of detecting reverse power flow and of sensing and controlling the voltage, VR-32 voltage regulators have provisions for operation at regardless of the power flow direction. The CL -7 control has system voltages other than the nominal rating, as listed full reverse power capabilities.
  • Page 22 Table 4 provides the application information for the various CTs used on Eaton regulators. These CTs provide 200 mA output for the rated CT primary current. 167, 200...

  • Page 23: Quik-Drive Tap-Changers

    VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer Quik-Drive tap-changers Eaton offers three Quik-Drive tap-changer models (see Figure 19, Figure 20, and Figure 21). Each device is sized for a specific range of current and voltage applications and share many similarities in their construction. The primary benefits of Quik-Drive tap-changers are: direct motor drive for simplicity and reliability;...
  • Page 24 VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer Quik-Drive tap-changer mechanism Contacts A tap change is initiated by the Control. After some rotation Several connection conditions are satisfied by the variety of the drive gear connected to the motor, a holding switch of contact structures.

  • Page 25: Maintenance

    One of the two main interrupting movable contacts placing the units back into service. Consult the tap-changer slides out of engagement with the neutral stationary manuals listed below or your Eaton representative for contact and interrupts the circuit through that branch. details on maintenance procedures.

  • Page 26: Operational Check

    VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer Holding switch Operational check Inspect for proper operation of the switch. Proper operation of the regulator can be checked without ● ● removing the unit from service. Inspect contact surfaces of holding switches on spring- ●...

  • Page 27: Insulating Fluid Maintenance

    Contact your not from the valve, but from the bottom of the tank. Eaton representative for further assistance in evaluating DGA results. Before collecting a sample, rinse the sampling bottle ●...

  • Page 28: Untanking The Regulator

    VR-T220 .0 operating an untanked regulator from the mounted control cabinet if the connection CAUTION cable is not long enough. Contact your Eaton representative for availability. Equipment Misoperation . Do not subject tap-changer with phenolic contact boards to temperatures above 150 °F (66 °C) .

  • Page 29: Retanking The Regulator

    VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer Retanking the regulator Check the gasket seat surfaces on the cover and tank, and wipe clean. Wipe the gasket and position it on the Retank the regulator as directed below. Refer to Figure 22. tank lip.

  • Page 30: Spare Parts

    Refer to Figure 23 for part identification of high-voltage response to reverse power flow. bushings. Required equipment Refer to the following Service Information documents for information on Eaton’s Cooper Power series tap-changer Clamp-on ammeter ● ● maintenance and replacement parts: Appropriate cable leads ●...

  • Page 31: Vr-32 Voltage Regulator Ratio Test

    VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer VR-32 voltage regulator ratio test Open the V1 (and V6 if present) and C switches on the control assembly back panel. Purpose Apply 120 Vac to the control External Source terminals. The purpose of this test is to: For instruction on connecting the control to an external source, see Service Information MN225003EN, CL-7 Confirm correct series winding tap-changer connections.
  • Page 32 16 lower. This is normal and inherent in the design of the type B regulator. Questions about the described procedure may be directed to your Eaton representative. InstallatIon, operatIon, and MaIntenance InstructIons MN225008EN February 2017...

  • Page 33: Voltage Regulator Potential Transformer Ratio Test

    VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer VR-32 voltage regulator potential transformer ratio Regulator dry-out procedure test Purpose Purpose The purpose of this procedure is to remove moisture from the paper insulation, coil, and other components of a The purpose of this test is to verify proper potential voltage regulator.

  • Page 34: Vr-32 Voltage Regulator Current Test

    Impedance to measure the current in the jumper during the test. voltage values may be obtained from the factory. Contact your Eaton representative for assistance. WARNING Let the regulator set in this condition for approximately Hazardous Voltage .

  • Page 35: Insulation Resistance Test

    VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer Insulation resistance test Purpose The purpose of this procedure is to describe the proper connections and procedure when performing an insulation power factor test on a voltage regulator. Required Equipment 120 V variable power supply ●...

  • Page 36: Freeing A Stalled Tap-Changer

    VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer Read the test value in mega-ohms; then compare the Place the CONTROL FUNCTION switch on LOCAL reading with the baseline reading: MANUAL. If the new reading is lower than the baseline 10. Jog the RAISE/LOWER switch in the direction the ●...

  • Page 37: Appendix

    VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer Appendix Connections and voltage levels Table 8 . VR-32 tap connections & voltage levels (60 Hz) Table 8 . (continued) Nominal Ratio-Adjusting Data Nominal Ratio-Adjusting Data Regulator Single- Test Overall Regulator Single- Test Overall Voltage Phase Internal Terminal...
  • Page 38 VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer Table 9 . VR-32 tap connections & voltage levels (50 Hz) Regulator Nominal Ratio-Adjusting Data Test Overall Voltage Single-Phase Terminal Potential Rating Voltage Internal Tap PT Ratio RCT Tap Voltage Ratio 6600 6930 – 54.9:1 119.2 58.1:1 6600...

  • Page 39: Add-Amp Capabilities

    55/65 °C rise rating on VR-32 voltage regulators gives an additional 12% increase in capacity if the tap-changer’s maximum current rating has not been exceeded. For loading in excess of the above values, please refer to your Eaton representative. 1093...
  • Page 40 55/65 °C rise rating on VR-32 voltage regulators gives an additional 12% increase in capacity if the tap-changer’s maximum current rating has not been exceeded. For loading in excess of the above values, please refer to your Eaton representative. InstallatIon, operatIon, and MaIntenance InstructIons MN225008EN February 2017...

  • Page 41: Wiring Diagrams

    VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer Wiring diagrams Figure 26 . Typical internal wiring of voltage regulators with a QD3 tap-changer InstallatIon, operatIon, and MaIntenance InstructIons MN225008EN February 2017...
  • Page 42 VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer Figure 27 . Typical internal wiring of voltage regulators with QD5 and QD8 tap-changers InstallatIon, operatIon, and MaIntenance InstructIons MN225008EN February 2017...
  • Page 43 VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer POS-2 (BLK) POS-5 (ORG) POS-8 (WHT) POS-6 (RED/BLK) POS-7 (BLK) POS-4 (LT BLU/BLK) POS-3 (BLK/WHT) POS-10 (GRN/BLK) POS-9 (BLU) GROUND (WHT) COLOR CHART COLOR BLACK WHITE GREEN ORANGE BLUE A (GRN) CC (GRN) WHITE/BLACK RED/BLACK GREEN/BLACK ORANGE/BLACK...
  • Page 44 VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer RS-1 (ORG/BLK) CC (ORG/BLK) CC (RED) CC (BLK) RLS-2 (BLU) JUNCTION BOX POSITION INDICATOR TERMINAL BOARD CC (WHT/BLK) (JBB) JBB-L (GRN/BLK) LOWER LIMIT SWITCH (LLS) CC (GRN/BLK) (RED) JBB-R (BLU) RAISE LIMIT CC (BLU/BLK) SWITCH (RLS) (GREEN) CC (BLU)
  • Page 45 VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer CONTROL CABLE (CC) MOTOR CC (BLU/BLK) CAPACITOR CC (BLK/WHT) (NOTE 2) (NOTE 1) 10 (BLK) NOTES 1. LEAD 20 (WHT/BRN) CONNECTS V6-4 TO V7 INSTEAD OF VS TO V7 WHEN A DIFFERENTIAL PT IS UTILIZED. 2.
  • Page 46 VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer his page is intentionally left blank. InstallatIon, operatIon, and MaIntenance InstructIons MN225008EN February 2017...
  • Page 47 VR-32 Voltage Regulator with Quik-Drive™ Tap-Changer his page is intentionally left blank. InstallatIon, operatIon, and MaIntenance InstructIons MN225008EN February 2017...
  • Page 48 United States Eaton.com/cooperpowerseries © 2017 Eaton All Rights Reserved Eaton is a registered trademark. Printed in USA For Eaton‘s Cooper Power series product Publication No. MN225008EN information call 1-877-277-4636 or visit: All trademarks are property www.eaton.com/cooperpowerseries. February 2017 of their respective owners.

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