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Product information

Introduction

Eaton’s Cooper Power series 100 A externally operated 

single-, two-, and three-phase Tap-Changer Switches 

are designed for use in distribution transformers filled 

with transformer oil, Envirotemp™ FR3™ fluid, or an 

approved equivalent. They are designed for use in pole 

or pad-mounted transformers. The switches are used to 

regulate induced voltage of the primary and to maintain 

constant secondary voltages.

Read this manual first

Read and understand the contents of this manual and follow 

all locally approved procedures and safety practices before 

installing or operating this equipment.

Additional information

These instructions cannot cover all details or variations 

in the equipment, procedures, or process described nor 

provide directions for meeting every possible contingency 

during installation, operation, or maintenance. For additional 

information, contact your Eaton Representative.

Acceptance and initial inspection

Each tap-changer switch is in good condition when 

accepted by the carrier for shipment. Upon receipt, inspect 

the shipping container for signs of damage. Unpack the 

tap-changer switch and inspect it thoroughly for damage 

incurred during shipment. If damage is discovered, file a 

claim with the carrier immediately.

Handling and storage

Be careful during handling and storage of the tap-changer 

switch to minimize the possibility of damage. If the switch 

is to be stored for any length of time prior to installation, 

provide a clean, dry storage area.

Standards

ISO 9001 Certified Quality Management System.

General mounting description

Table 1 .  Dielectric clearance dimensions

kV BIL

Minimum mounting clearance 

under-oil to Gnd/ between phases/ 

and depth below top level

95

1.1”

125

1.5”

150

2.0”

Torque requirements

To Seal - 80-120 inch pounds.

Clearance

Mechanical - External handle clear of obstructions. When 

the lever handle with index plate is used, flattening for the 

gasket sealing surface must not exceed a depth of .25”.

Mechanical strength

Designed to support leads sized per rating of switch. 

Standard dielectric dimensions for lead separation should 

be followed. Connection of leads can be made either to 

bolt tabs or crimped into connectors (if supplied). Special 

stationary contact with crimp barrels are available for 

#16-14, #12-10, and #8 copper wires. Bolt tab designed to 

accept 1/4”-20 bolt and ring tongue terminals through #4. 

A larger terminal may be used if the terminal amperage 

rating corresponds with the switch rating.

 CAUTION

Equipment Damage . Caution should be used in 

lead training [dressing] to avoid lead forces of over 

60 pounds on the switch in any direction . Anticipate 

thermal expansion and contraction as well as 

mechanical stresses from transportation, which will 

vary by application . Misuse of lead training could result 

in equipment damage .

Electrical ratings

Impulse withstand

150 kV BIL

60 Hz 1 minute withstand

50 kV

Continuous current

100 A rms

1

INSTALLATION INSTRUCTIONS

 

MN800014EN   February 2017

100 A tap-changer switch cap/wrench, lever or hotstick operable handles installation instructions

Summary of Contents for COOPER POWER SERIES

Page 1: ...100 A tap changer switch cap wrench lever or hotstick operable handles installation instructions COOPER POWER SERIES OEM Equipment MN800014EN Effective February 2017 Supersedes August 2012 S800 57 1...

Page 2: ...PURPOSE OR MERCHANTABILITY OTHER THAN THOSE SPECIFICALLY SET OUT IN ANY EXISTING CONTRACT BETWEEN THE PARTIES ANY SUCH CONTRACT STATES THE ENTIRE OBLIGATION OF EATON THE CONTENTS OF THIS DOCUMENT SHAL...

Page 3: ...manual first 1 Additional information 1 Acceptance and initial inspection 1 Handling and storage 1 Standards 1 GENERAL MOUNTING DESCRIPTION 1 Torque requirements 1 Clearance 1 Mechanical strength 1 E...

Page 4: ...pment and support our Safety For Life mission Safety information DANGER Hazardous voltage Contact with high voltage will cause death or severe personal injury Follow all locally approved safety proced...

Page 5: ...gth of time prior to installation provide a clean dry storage area Standards ISO 9001 Certified Quality Management System General mounting description Table 1 Dielectric clearance dimensions kV BIL Mi...

Page 6: ...witch as a warning to service personnel Failure to do so will constitute a waiver of all warranty and indemnity obligations which may be attributable to Eaton WARNING The misapplication of the switch...

Page 7: ...Figure 2 Cap Wrench Assembly Figure 3 One Phase Cap Wrench Switch Dimension will decrease as tank wall thickness increases Maximum dimension given with 14 gauge tank wall Figure 4 Cap Wrench Front Vie...

Page 8: ...re 9 One phase flexible hotstick switch Note N Switch can be used on 14 gauge to 25 inch thick frontplate Bolt tabs are bent up 90 and have a hole to accept 25 inch 6 mm hardware Figure 10 Flexible ho...

Page 9: ...12 One phase rigid one piece hotstick Dimension will decrease as tank wall thickness increases Maximum dimension given with 14 gauge tank wall Figure 13 Rigid one piece hotstick front view Dimension...

Page 10: ...Standard length Long shank Bolt Tabs for 1 4 inch Bolts 2 91 74 4 47 113 40 16 14 AWG Terminals 3 48 88 4 4 20 106 70 12 10 AWG Terminals 3 48 88 4 4 20 106 70 8 AWG Terminals 3 57 90 7 4 20 106 70 Fi...

Page 11: ...This page intentionally left blank 7 INSTALLATION INSTRUCTIONS MN800014EN February 2017 100 A tap changer switch cap wrench lever or hotstick operable handles installation instructions...

Page 12: ...com cooperpowerseries 2017 Eaton All Rights Reserved Printed in USA Publication No MN800014EN Rev 1 Supersedes S800571 Rev 3 February 2017 Eaton is a registered trademark All trademarks are property...

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