Eaton COOPER POWER Series Installation, Operation, And Maintenance Instructions And Parts Replacement Information
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Eaton COOPER POWER Series Installation, Operation, And Maintenance Instructions And Parts Replacement Information

Eaton COOPER POWER Series Installation, Operation, And Maintenance Instructions And Parts Replacement Information

Substation transformers
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See also: Instruction and Installation Manual , Manual
Substation
Transformers
MN202002EN
Substation transformer installation, operation, and maintenance
instructions and parts replacement information
Effective June 2016
Supersedes S210-15-10 February 2013
COOPER POWER
SERIES

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Summary of Contents for Eaton COOPER POWER Series

  • Page 1 COOPER POWER Substation Transformers SERIES Effective June 2016 MN202002EN Supersedes S210-15-10 February 2013 Substation transformer installation, operation, and maintenance instructions and parts replacement information...

  • Page 2: Disclaimer Of Warranties And Limitation Of Liability

    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 other- wise for any special, indirect, incidental or consequential damage or loss whatsoever, including but not limited to damage or...

  • Page 3: Table Of Contents

    Contents DISCLAIMER OF WARRANTIES AND LIMITATION OF LIABILITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II SAFETY FOR LIFE .

  • 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: Product Information

    He or she will, mineral oil-filled transformer . Eaton’s Cooper Power™ with the inspector's report, take the necessary steps to series PEAK™ transformers may help to extend file a claim against the carrier.

  • Page 6: Installation

    Installation Transformers equipped with an internal terminal board are normally shipped with the higher voltage connected, unless otherwise specified by the customer. Installation location A secure and effective low resistance ground is essential for protection. The transformer must be grounded perma- The transformer should be located on a concrete pad of nently by connecting a heavy ground cable to the ground sufficient strength to support the weight of the unit.
  • Page 7 If an internal inspection is required, assure that: There is no evidence of moisture. All available bolted connections are tight. There has been no shifting of any parts or any other damage. The external inspection should determine that: All scratches have been painted. The bushings are clean.

  • Page 8: Accessories

    Accessories Liquid temperature gauge Liquid level gauge Figure 2 . Liquid temperature gauge . Figure 1 . Liquid level gauge . The temperature gauge is furnished to indicate the top A liquid level indicator is provided to aid in the systematic liquid temperature in the tank in degrees Centigrade.

  • Page 9: Pressure-Vacuum Gauge

    Pressure-vacuum gauge Pressure relief device Figure 4 . Pressure relief device . Figure 3 . Pressure-vacuum gauge . All substation transformers are furnished with a mechanical pressure relief valve (PRV) or pressure relief device (PRD). The cover-mounted PRD consists of a self-resetting, spring- loaded diaphragm and a mechanical operation indicator.

  • Page 10: Winding Temperature Gauge

    Winding temperature gauge Transformer cooling fans Figure 5 . Winding temperature gauge . Figure 6 . Transformer cooling fan . Transformers may be furnished with a winding temperature In order to increase the transformer load without gauge as optional equipment. A temperature sensitive overheating the windings, a set of fans can be furnished as stem is mounted in a leakproof well, permitting removal of an optional item.

  • Page 11: High Voltage Bushings

    High voltage bushings Low voltage bushings Figure 8 . Low voltage bushings . Figure 7 . High voltage bushing . Low voltage leads for ratings in the 1.2 kV Class are High voltage leads for ratings 2.4 kV and up are normally normally brought through the tank wall using an indoor brought through the tank end wall using a cycloaliphatic bushing.

  • Page 12: De-Energized Tap-Changer

    De-energized tap-changer Insulating liquid The insulating liquid in substation transformers is either conventional transformer oil, R-Temp™ fluid or Envirotemp™ FR3™ fluid. When makeup liquid is required, use only approved fluid of the same type that is in the transformer. It is important to check the proper liquid level in the transformer at all times by periodically observing the liquid level gauge.

  • Page 13: Vacuum Fault Interrupter (Vfi)

    . load make/break switching capabilities. The VFI transformer uses the same technology used in Eaton’s Cooper Power series VFI pad-mounted switchgear. • Use a hotstick to operate transformer loadbreak equipment .
  • Page 14 Operation Instructions for electronic control operation instructions. Standard electrical ratings for Eaton VFI transformers are as follows: Continuous Current (max) ..... 600 A Interrupting Current (sym./asym.).

  • Page 15: Maintenance

    Maintenance Removing and replacing draw lead type bushings Removing Periodic inspection Unscrew and remove the top terminal cap, exposing the threaded stud end of the draw lead cable. In some External: Periodically check the condition of the paint and finish, especially when the transformer is exposed cases, the threaded stud will be held by a pin that must also be removed.

  • Page 16: Removing And Replacing Fixed Stud Or Spade Type Bushings

    Replacing Replacing Replacement draw lead type bushings can be installed by Replacement bushings can be installed by following the following the removal procedure in reverse order. Clamp removal procedure in reverse order. Clamp bolts should be bolts should be tightened as specified in Table 1. tightened as specified in Table 1.

  • Page 17: Cover Removal

    Cover removal To reinstall the bolt-on main tank cover (For Envirotemp™ FR3™ fluid-filled units, see “Insulating Return the gasket sections to their original positions Liquid Maintenance” Section before continuing.) and orientation. Transformers that have been system connected should be Reinstall the cover, using 25 ft-lbs. torque to tighten the de-energized, grounded, and disconnected before being cover hardware.

  • Page 18: Insulating Liquid Maintenance

    Insulating liquid maintenance Filtration should be continued until the dielectric test of the insulating liquid is 26 kV or better. Sampling insulating liquid CAuTION otee: A sample of the liquid should be taken when the unit When filtering any insulating fluid, the filtering is warmer than the surrounding air to avoid conden- equipment must be free of contaminants and other sation of moisture on the liquid.

  • Page 19: Peak™ And Envirotemp™ Fr3™ Fluid-Filled Transformers

    24 hours, any oxygen absorber sure that any gas bubbles created during the process have packet(s) should be replaced. dissipated. Contact your Eaton representative for additional handling guidelines. Transformer oil contamination Envirotemp™ FR3™ fluid is fully miscible with oil. There is no known detrimental performance impact when PEAK™...

  • Page 20: Preventative Maintenance Instructions

    Preventative maintenance instructions If any issues are found regarding the below, contact PS-WarrantyServices@ Eaton.com for assistance on transformers under warranty. Additionally, these reports must be available upon request to maintain warranty period. WARNING Hazardous voltage . Can cause severe injury, death, or damage to equipment .
  • Page 21 Items to Inspect Points to be checked Remedial Action Frequency Dielectric Fluid Level Check dielectric fluid level gauge. Note that the If the dielectric fluid level is below the nominal Annual fluid level gauge has a notation as to the expected level, check transformer for signs of a leak.
  • Page 22 This page is intentionally left blank. SubStation tranSformer inStallation and partS replacement information MN202002EN JUNE 2016...
  • Page 23 This page is intentionally left blank. SubStation tranSformer inStallation and partS replacement information MN202002EN JUNE 2016...
  • Page 24 United States Eaton.com/cooperpowerseries © 2016 Eaton All Rights Reserved Eaton is a registered trademark. Printed in USA For Eaton's Cooper Power series product Publication No. MN202002EN information call 1-877-277-4636 or visit: All trademarks are property www.eaton.com/cooperpowerseries. June 2016 of their respective owners.

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