Cooper VR Series User Manual

September 1983
●
New Issue
Printed in USA
Oil Switches
Types VR, VCR, VLR
Maintenance Instructions
1
S260-20-9
Service Information
Figure 1.
Type VR,VCR and VLR electronically controlled three phase oil switch.
These instructions do not claim to cover all details or variations in the equipment, procedure, or process described, nor to provide
directions for meeting every contingency during installation, operation, or maintenance. When additional information is desired to
satisfy a problem not covered sufficiently for the user’s purpose, please contact your Cooper Power Systems sales engineer.
CAUTION: Do not energize this
equipment out of oil.
!
CONTENTS
Introduction . . . . . . . . . . . . . . . . . 1
General Description . . . . . . . . . . 1
Description of Operation . . . . . . 3
Standard Actuator . . . . . . . . . . . . 3
Quick-Close Actuator . . . . . . . . . 4
Ratings and Specifications . . . . 5
Maintenance . . . . . . . . . . . . . . . . 5
Frequency of Maintenance . . . . . 5
Periodic Maintenance Inspection . 5
Operating Instructions . . . . . . . . 6
Electrical Operation . . . . . . . . . 6
Standard Actuator . . . . . . . . . 6
Quick-Close Actuator . . . . . . . 6
Manual Operation . . . . . . . . . 6
To Close Switch . . . . . . . . . 6
To open Switch . . . . . . . . . . 6
Oil Condition . . . . . . . . . . . . . . 6
Insulation Level Withstand Tests 6
Shop Repair Procedures . . . . . 7
Bushings . . . . . . . . . . . . . . . . . 7
Contacts . . . . . . . . . . . . . . . . . 7
Type VR and VCR Switches .8
Type VLR Switches . . . . . . . . 11
Actuator Mechanism . . . . . . . . 13
Electrical Components . . . . . 13
Trip Solenoid . . . . . . . . . . . . 14
Motor Replacement . . . . . . . 15
Speed Reducer . . . . . . . . . . 15
Service Parts List ..................... 17
Tank and Head Assembly Parts
(Figure 39) .......................... 18
Type VR Contact Assembly Parts
(Figure 40) .......................... 20
Type VCR Contact Assembly Parts
(Figure 41) .......................... 21
Type VLR Contact Assembly Parts
(Figure 42) .......................... 22
Actuator Mechanism Parts
(Figure 43) .......................... 24
Quick-Close Mechanism Parts
(Figure 44) .......................... 26

Cooper VR Series Specifications

General

Termination	Screw
Type	Toggle
Amperage	15 A
Voltage	120V, 277V
Poles	Single
Color	Ivory
Mounting Type	Wall

Summary

Oil Switches

Introduction to Oil Switches

General Description of Oil Switches

Description of Operation

Standard Actuator Operation

Details the operation of the standard motor-operated actuator mechanism.

Quick-Close Actuator Operation

Ratings and Specifications

Maintenance

Frequency of Maintenance

Advises on determining maintenance intervals based on operating experience.

Periodic Maintenance Inspection

Lists the steps for performing a periodic maintenance inspection.

Operating Instructions

Electrical Operation

Explains how to open and close the switch electrically using the actuator.

Manual Operation

Details how to manually operate the switch using the actuator crank.

Oil Condition

Insulation Level Withstand Tests

Insulation Level Withstand Tests Procedure

Details the specific test procedures (Test 1, 2, 3) for insulation withstand.

Shop Repair Procedures

Bushing Repair and Replacement

Explains how to inspect, repair, and replace bushings.

Contacts

Describes the different types of contacts and their service.

Contact Replacement Procedures

Type VR and VCR Contact Replacement

Provides detailed steps for removing and replacing contacts for Type VR and VCR switches.

Type VCR Switch Contact Procedures

Type VCR Switch Specific Contact Procedures

Details specific contact procedures and reassembly steps for the Type VCR switch.

Contact Alignment

Contact Adjustment and Pressure

Type VLR Switch Contact Replacement

Type VLR Switch Contact Assembly and Alignment

Actuator Mechanism and Electrical Components

Electrical Component Troubleshooting

Guides on checking electrical components if the switch fails to operate electrically.

Trip Solenoid Replacement

Motor and Speed Reducer Maintenance

Motor Replacement

Details motor replacement procedures for older and newer switch models.

Speed Reducer Maintenance

Outlines maintenance for the speed reducer, including greasing and replacement.

Speed Reducer Replacement Procedure

Service Parts List

Tank and Head Assembly Parts

Tank and Head Assembly Parts List

Type VR Contact Assembly Parts

Type VCR Contact Assembly Parts

Type VLR Contact Assembly Parts

Type VLR Contact Assembly Parts List

Actuator Mechanism Parts

Actuator Mechanism Parts List

Quick-Close Mechanism Parts