Cooper S225-10-30 Installation, Operation And Maintanance Instructions
  1. Manuals
  2. Brands
  3. Cooper Manuals
  4. Controller
  5. S225-10-30
  6. Installation, operation and maintanance instructions

Cooper S225-10-30 Installation, Operation And Maintanance Instructions

Vr-32 voltage regulator with quik-drive tap-changer
Hide thumbs
Table of Contents

Advertisement

Quick Links

Voltage Regulators
VR-32 Voltage Regulator with Quik-Drive Tap-Changer
Installation, Operation, and Maintenance Instructions
Figure 1 .
VR-32 Voltage Regulator with Quik-Drive tap-changer and CL-6 control .
Contents
Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Product Information . . . . . . . . . . . . . . . . . . . . . . . . . 3
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Acceptance and Initial Inspection . . . . . . . . . . . . 3
Handling and Storage . . . . . . . . . . . . . . . . . . . . . . 3
Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Available Options . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pre-installation Inspection . . . . . . . . . . . . . . . . . . 6
Systems Connection . . . . . . . . . . . . . . . . . . . . . . . 6
Nameplates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Placing Regulator into Service . . . . . . . . . . . . . . 0
Setting the Manual Limit Switches . . . . . . . . . . . 2
Removal from Service . . . . . . . . . . . . . . . . . . . . . 3
October 2007 • New Issue
Printed in USA
S225-10-30
Construction and Operation . . . . . . . . . . . . . . . . . . 14
External Features . . . . . . . . . . . . . . . . . . . . . . . . 4
Surge Protection . . . . . . . . . . . . . . . . . . . . . . . . . 5
Internal Construction and Wiring . . . . . . . . . . . . 6
Quik-Drive Tap-Changers . . . . . . . . . . . . . . . . . . 20
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Periodic Inspection . . . . . . . . . . . . . . . . . . . . . . . 23
Untanking the Regulator . . . . . . . . . . . . . . . . . . . 24
Retanking the Regulator . . . . . . . . . . . . . . . . . . . 25
Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Service Information



Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the S225-10-30 and is the answer not in the manual?

Questions and answers

Related Manuals for Cooper S225-10-30

Summary of Contents for Cooper S225-10-30

  • Page 1: Table Of Contents

    Voltage Regulators Service Information S225-10-30 VR-32 Voltage Regulator with Quik-Drive Tap-Changer Installation, Operation, and Maintenance Instructions Figure 1 . VR-32 Voltage Regulator with Quik-Drive tap-changer and CL-6 control . Contents Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Construction and Operation .

  • Page 2: Safety Information

    FOR LIFE FOR LIFE Cooper Power Systems products meet or exceed all applicable industry standards relating to product safety. 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 Cooper Power Systems employees involved in product design, manufacture, marketing, and service.

  • Page 3: Product Information

    If the regulator is not Cooper Power Systems VR-32 voltage regulator with the to be placed into immediate use, it can be stored with Quik-Drive tap-changer. This manual also includes parts minimal precautions.

  • Page 4: Description

    50 feet, 10 foot increments, factory installed and automation distribution systems. Available in pole-, platform-, and pad-mounted and sub- station configurations, the Cooper VR-32 is suitable for three- or four-wire overhead and underground systems. Cooper Power Systems VR-32 voltage regulators are regu- lating auto-transformers.
  • Page 5 S225-10-30 SAFETY FOR LIFE MOV-Type Series Bushing Connectors Arrester Threaded-Stud Bushing Terminals Junction Box Bushings Hand-Hole Cover Internal Assembly Lifting Eyes Cover Upper Filter Press Connection Regulator Lifting Lugs Shunt-Arrester Position Indicator Mounting Bosses Ball-Type Automatic Oil Sight Gauge Pressure-Relief Device Pole-Mounting Bracket (Units up to 250 kVA.)

  • Page 6: Installation

    VR-32 Voltage Regulator Installation, Operation, and Maintenance Instructions INSTALLATION Pre-installation Inspection Systems Connections Before connecting the regulator to the line, make the fol- WARNING: Hazardous Voltage. Connect the "S" lowing inspection: bushing to the source, the "L" bushing to the load.  .
  • Page 7 S225-10-30 SAFETY FOR LIFE Bypass Switches Bypass Switch Disconnects Disconnects Shunt Arrester Series Arrester Shunt Arresters Series Arrester Figure 6 . Figure 5 . Regulating a three-phase, three-wire circuit with Regulating one phase of a three-phase, four-wire two regulators (Open Delta) .

  • Page 8: Nameplates

    (10 ft) to 15.20 m (50 ft) for interconnection between the service. When calling Cooper Power Systems for service control and the regulator. or support-related issues, please obtain the catalog num-...
  • Page 9 S225-10-30 SAFETY FOR LIFE WAN22B2006AN 0737XXXXXX 1384 Figure 10 . Typical nameplate, international 50 Hz design .

  • Page 10: Placing Regulator Into Service

    VR-32 Voltage Regulator Installation, Operation, and Maintenance Instructions Placing Regulator into Service DANGER: Explosion Hazard. During bypass switching, the regulator must be in the neutral position. Prior to bypass switching: 1) The regulator must be placed in the neutral position; 2) Tap-changer operation must be disabled during the bypass switch- ing.
  • Page 11 S225-10-30 SAFETY FOR LIFE Procedure A: One Bypass Switch and P ro c e d u re B : R e g u l a t o r B y p a s s - Two disconnect Switches disconnect Switch  .
  • Page 12 VR-32 Voltage Regulator Installation, Operation, and Maintenance Instructions S e t t i n g t h e M a n u a l ( H a rd ) L i m i t Switches Refer to the CONSTRUCTION AND OPERATION: Position Indicator and ADD-AMP Capability section of this manual for a complete discussion of these features.

  • Page 13: Removal From Service

    S225-10-30 SAFETY FOR LIFE Removal from Service 3 . Verifying the neutral position of the regulator using four methods: determining Neutral Position A . Verify that the neutral indicator light on the control is indicating the neutral position. Neutral is indicat- DANGER: Explosion Hazard.

  • Page 14: Construction And Operation

    VR-32 Voltage Regulator Installation, Operation, and Maintenance Instructions CONSTRUCTION ANd OPERATION The Cooper Power Systems VR-32 Voltage Regulators are Stainless steel mounting bosses are provided for the addi- designed, manufactured, and tested in accordance with tion of lightning arresters adjacent to the source (S), load IEEE Standard C57.15-1999™.

  • Page 15: Position Indicator And Add-Amp Capabilities . 5

    S225-10-30 SAFETY FOR LIFE Position Indicator and Add-AMP When using the limit switches, a detent stop at each set- ting provides positive adjustment. Settings other than Capability those stops are not recommended. The raise and lower Regulators rated below 668 A include an ADD-AMP fea-...

  • Page 16: Internal Construction And Wiring

    VR-32 Voltage Regulator Installation, Operation, and Maintenance Instructions Internal Construction & Wiring The main core and coil assemblies are of the shell-form configuration. The series winding on the input (source) side The regulators are designed such that they can be partially of the regulator (Figure 13) allows all windings (control, or completely untanked for inspection and maintenance shunt and series) to be located in one coil assembly.
  • Page 17 S225-10-30 SAFETY FOR LIFE This interlacing of the two coils reduces the interwinding The tap-changer enables the regulator to provide regula- leakage reactance to a very low value. The reactor is com- tion in smooth, accurately proportioned steps at a con-...
  • Page 18 The motor circuit is routed directly to the control front panel and the sensing potential is brought All Cooper Power Systems VR-32 regulators have provi- back to the top terminal strip through a series of removable sions for operation at system voltages lower than the jumpers and then to the front panel.
  • Page 19 Table 4 provides the application information for ered to the circuit board, it is transformed into a voltage the various CTs used on the Cooper Power Systems regu- signal and converted into a digital format for processing. lators. These CTs provide 200 mA output for the rated CT primary current.

  • Page 20: Quik-Drive Tap-Changers

    VR-32 Voltage Regulator Installation, Operation, and Maintenance Instructions Quik-drive Tap-Changers Quik-drive Motors drive Systems Either AC Synchronous Motors or Induction Motors are The present load tap-changer product offering consists of used on Quik-Drive tap-changers. The motor uses a three Quik-Drive tap-changers (see Figures 18—20). Each Holding Switch Circuit that is activated after the Control device is sized for a specific range of current and voltage signals for a tap change.
  • Page 21 S225-10-30 SAFETY FOR LIFE Contacts Several connection conditions are satisfied by the variety of contact structures. They are divided into arcing and non-arcing. The non-arcing contacts consist of front and rear slip rings, which serve as the connection point for opposite ends of the reactor windings and one end of the two main movable contacts.
  • Page 22 VR-32 Voltage Regulator Installation, Operation, and Maintenance Instructions Operating Sequence 8 . The main interrupting contacts slide over and onto the number one stationary contact, making a bridging When the tap-changer is in the neutral position and the position from contact N to contact  by way of the control calls for a tap change, the following events occur.

  • Page 23: Maintenance

    S225-10-30 SAFETY FOR LIFE MAINTENANCE Periodic Inspections TAbLE 5 FR3 Fluid Characteristics (natural ester*) Step-type voltage regulators are designed to provide many Used years of trouble-free operation. The usable life of a regulator is affected by its application and periodic inspections are Dielectric Strength (kV) recommended.

  • Page 24: Untanking The Regulator

    VR-32 Voltage Regulator Installation, Operation, and Maintenance Instructions Untanking the Regulator 6 . Attach sling or hooks with a spreader bar to the lifting eyes and raise the cover, with the attached core-and- WARNING: Personal Injury. Do not rely on the coil assembly, until the top of the coil is approximately lifting apparatus when the internal assembly is one inch under oil (see Figure 21).

  • Page 25: Retanking The Regulator

    When ordering replacement parts or field-installation acces- If not, remove indicator cable in junction box from posi- sories for your Cooper Power Systems VR-32 step-voltage tion indicator shaft after loosening set screw. Rotate regulator, provide the following information: indicator shaft until proper position is reached, then •...
  • Page 26 VR-32 Voltage Regulator Installation, Operation, and Maintenance Instructions Chain Quik-Drive holding switch assembly Motor Right-hand reversing stationary contact Brake assembly Left-hand reversing stationary contact Main reversing contact Main stationary contact Right-hand movable contact Reversing movable contacts contact Left-hand movable contact Figure 23 .
  • Page 27 S225-10-30 SAFETY FOR LIFE Quik-Drive holding switch assembly Reversing movable contact Right-hand reversing stationary contact Brake assembly Main movable contact assembly Left-hand reversing stationary contact Motor Neutral stationary contact Main stationary contact Figure 24 . Replacement parts for the Quik-Drive tap-changer QD-5 .
  • Page 28 VR-32 Voltage Regulator Installation, Operation, and Maintenance Instructions Motor resistor TC-LTC PI drive gear kit Motor kit PI cam Main stationary contact Quik-Drive holding switch assembly Reversing movable contact Reversing stationary contact Main movable contact assembly Figure 25 . Replacement parts for the Quik-Drive tap-changer QD-3 .

  • Page 29: Troubleshooting

    S225-10-30 SAFETY FOR LIFE TROUBLESHOOTINg 6 . If there is no voltage measurement in either Step 2 or WARNING: Hazardous Voltage. When trouble- 4, make a corresponding measurement (R to G and shooting energized equipment, protective gear to G) on lower terminal board Tb must be worn to avoid personal contact with energized 7 .
  • Page 30 The nameplate change, the problem is in the holding switch circuit. indicates what type of tap-changer is on the Cooper If the holding switch is not working, a Quik-Drive Power Systems regulator. FC 49 must be set for the type...
  • Page 31 S225-10-30 SAFETY FOR LIFE Check Function Code 56, Reverse Sensing Mode No Band Indicators When there is no load current and the regulator will not If the band indicators are not working when the voltage is operate in automatic, check the C switch on the back out-of-band, check the following: panel.
  • Page 32 VR-32 Voltage Regulator Installation, Operation, and Maintenance Instructions Metering Troubleshooting 2 . If correct voltage readings are obtained in steps 9 and 11 above, the trouble is in the regulator tank. Refer to Load Voltage Secondary (Output Voltage) the Troubleshooting section of Service Information does Not Match the Voltmeter Test S225-10-2.
  • Page 33 S225-10-30 SAFETY FOR LIFE Control Calibration Current Calibration  . Connect an accurate true-RMS-responding ammeter WARNING: Explosion Hazard. Verify that both in series with the current source. the neutral light and the position indicator hand 2 . Connect a stable 60/50 Hz current source (with less...
  • Page 34 VR-32 Voltage Regulator Installation, Operation, and Maintenance Instructions 3 . Check the voltage at V to G. If the voltage is present at No Neutral Sync Signal to G, then the problem could be in the wiring har- CONTROL NOT INSTALLED ON REGULATOR ness or ratio-correcting transformer.
  • Page 35 S225-10-30 SAFETY FOR LIFE Position Indicator Replacement No Input Voltage The (No Input Voltage) message occurs when no input  . Verify that the tap-changer is in neutral via the neutral voltage was sensed and FC 56, Reverse Sensing Mode light of the control and visual inspection of the tap- is not set for Locked Forward.
  • Page 36 PI housing.) rotate the coupling (while holding the flex shaft) until Note that the new Cooper Power Systems' PI has the scribe line is one line-width inside the band notch. a one-piece input shaft/coupling and a raised mark Retighten the setscrews and proceed to step 19.
  • Page 37 S225-10-30 SAFETY FOR LIFE Troubleshooting Procedures and CAUTION: Equipment Damage. Be mindful of polar- Tests ity when using an external source. Polarity reversal will result in control damage. VR-T201.0 Regulator Control Reverse Power Flow CAUTION: Equipment Damage. Only an ac power sup- WARNING: Hazardous Voltage.
  • Page 38 VR-32 Voltage Regulator Installation, Operation, and Maintenance Instructions VR-32 Voltage Regulator Ratio Test 7 . Calculate the change in volts per tap change as fol- lows: The ratio test determines: series winding volts = 12 = 0.75 V per step A .
  • Page 39 If ratio is shown as 60:1, then the V to ground voltage will be: Input Voltage (120 V ac) = ground voltage PT Ratio (120 V ac)/(60) = 2.0 V Contact your Cooper Power Systems representative with any questions.
  • Page 40 VR-32 Voltage Regulator Installation, Operation, and Maintenance Instructions VR-32 Regulator Current Test 0 . Run the voltage regulator through all of the tap posi- tions to check the continuity and reveal any possible intermittent opens. The current indicated on the clamp- WARNING: Hazardous Voltage.
  • Page 41 S225-10-30 SAFETY FOR LIFE Procedure to Free a Stalled Tap-  . Place the Auto/Remote-Off-Manual switch on OFF. Changer 2 . Place the Internal/External power switch on OFF.  . To determine if the tap-changer is stalled between tap 3 . Open V disconnect switch.
  • Page 42 A . There is no Differential Voltage present between To set the current controls offered by Cooper Power the "S" and "L" bushings. Systems, the system connection configuration does not B .
  • Page 43 INSTALLATION: Removal from Service section of this manual. • Appropriately sized temporary capacitor. If in doubt as to correct capacitor size, contact the Cooper Power 6 . Remove the internal capacitor. Systems Service Department. 7 . Install an external capacitor, located electrically between...
  • Page 44 VR-32 Voltage Regulator Installation, Operation, and Maintenance Instructions Applied Voltage TAbLE 8 Applied Potential for New Units DANGER: High Voltage. This is a high-voltage Applied AC Potential Test Voltage (kV) test. The high-voltage potentials can arc to a per- son or to equipment over a short distance. The regula- tor must be in a test cage or similar protective device.

  • Page 45: Appendix

    S225-10-30 SAFETY FOR LIFE APPENdIx TAbLE 10 TAbLE 11 VR-32 Tap Connections and Voltage Levels (60 Hz) VR-32 Tap Connections and Voltage Levels (50 Hz) Nominal Test Overall Nominal Test Overall Regulator Single Ratio-Adjusting Data Terminal Potential Regulator Single Ratio-Adjusting Data...
  • Page 46 † 55/65 °C rise rating on VR-32 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 Cooper Power Systems representative. 50.2 100.4 19920 200.8...
  • Page 47 S225-10-30 SAFETY FOR LIFE To Control Terminal Junction Box Board and Terminal Board Position (JBB) Indicator Current L HS Transformer JBB-C 1 (WHT) JBB-C 2 (BLK) T-E 2 T-E 1 JBB-G Tap-Changer (WHT) (WHT) (WHT) Tap-Changer Motor (M) Tap-Changer Terminal Board...
  • Page 48 VR-32 Voltage Regulator Installation, Operation, and Maintenance Instructions CURRENT TRANSFORMER (TOROIDAL COIL) SOURCE LOAD BUSHING BUSHING TAPPED SERIES WINDING JBB-C2 JBB-C1 CT PROTECTION CIRCUIT DF - DIFFERENTIAL VOLTAGE FUSE REMOVABLE GROUND LOCATED ON BACK DHR - DRAG HAND RESET PANEL PLATE INSIDE CONTROL BOX.
  • Page 49 S225-10-30 SAFETY FOR LIFE CIRCUIT NEUTRAL BOARD LAMP J4-7 SENSE J4-4 COUPLER INPUT COUPLER J4-3 SUPERVISORY AUTO TRIACS MOTOR V-OUT SWITCH ENABLE CURRENT (LOAD) COUPLER COUPLER SENSE INPUT COUPLER COUPLER LOWER SOURCE RAISE V-IN/DIFF PANEL POWER INPUT INPUT COUPLER AUTO...
  • Page 50 ©2007 Cooper Power Systems, Inc., or its affiliates. ADD-AMP, Envirotemp FR3, PMT, Quik-Drive, SOFT-ADD-AMP, UltraSIL, and VariGAP are valuable trademarks of Cooper Industries in the U.S. and other countries. You are not permitted to use the Cooper Trademarks without the prior written consent of Cooper Industries.

Table of Contents