Cooper VW User Manual

1
Service Information
Reclosers
Types VW, VWV27 and VWV38
Maintenance Instructions
S280-30-7
December 1986 • New Issue
Figure 1.
Type VW vacumm-interrupting, hydraulicaly controlled, automatic circuit recloser.
99001KM
CAUTION
Do not energize this equipment out of oil.
RADIATION
WARNING

Before performing electrical tests on types VW and VWV
Reclosers, refer to Service Information S280-90-1.
CONTENTS
Safety for Life ......................................................................2
Introduction .........................................................................2
Description and Operation ..............................................2
General ..............................................................................2
Manual Operating Handle ...............................................2
Non-Reclosing Lever .......................................................2
Contact Position Indicator ................................................2
Vacuum Interrupters ........................................................3
Closing Solenoid ..............................................................3
Closing Solenoid Contactor .............................................3
Hydraulic Pump and Lockout Piston ..............................3
Series Trip Solenoids .......................................................3
Time Delay Unit ................................................................3
Mechanism Operation ......................................................4
Hydraulic Control System Operation ............................4
Maintenance ........................................................................5
Frequency of Maintenance .............................................5
Periodic Maintenance Inspection ....................................5
Manual Operation of the Recloser ..................................6
Mechanism In Oil ...........................................................6
Mechanism Out of Oil ...................................................7
Insulation Level Withstand Tests ....................................7
Oil Condition ......................................................................8
Shop Maintenance Procedures .................................9
Control Lever Overtravel Adjustments ......................9
Bushings ...................................................................9
Type VW Bushings ................................................9
Type VWV27 and VWV38 Bushings ....................10
Vacuum Interrupters ................................................12
Closing Solenoid Contactor .....................................12
Closing Solenoid ......................................................12
Series Trip Solenoid ..................................................13
Solenoid Disassembly .............................................13
Solenoid Replacement ............................................13
Time Delay Unit ..........................................................13
Maintenance .............................................................13
Replacement ............................................................14
Removing Mechanism from Head ...........................14
Reinstalling Mechanism into Head ..........................14
Testing .........................................................................14
Notes............................................................................15
Service Parts List .......................................................15
Bushing Part (Figure 25) ..........................................17
Head and Tank Assembly (Figure 26) .....................19
Trip Coil and Interrupter Mechanisms (Figure 27) ...21
(Figure 28) ...............................................................23
These instructions do not claim to cover all details or variations in the equipment, procedure, or process described, nor to provide direction for meet-
ing every possible 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.
14.4 Kv • 560 Amp (Type VW) (Serial No. 510 and
after or beginning with CP57.)
24.9 Kv • 560 Amp (Type VWV27) (Serial No. 144
and after or beginning with CP57.)
34.5 Kv • 560 Amp (Type VWV38) (Serial No. 101
and after or beginning with CP57.)

Cooper VW Specifications

General

Brand	Cooper
Model	VW
Category	Controller
Language	English

Summary

Safety Information

Safety Instructions

General and specific safety warnings and precautions for operating and maintaining the equipment.

Hazard Statement Definitions

Explains the meaning of DANGER, WARNING, and CAUTION statements used in the manual.

Introduction and Description

Introduction

Overview of the manual's scope, including recloser types and maintenance procedures.

General Description and Operation

Basic function of reclosers, automatic reclosing, and fault clearing.

Key Component Identification

Identifies major components like bushings, solenoid, and vacuum interrupters.

Recloser Operational Systems

Mechanism Operation

Details the sequence of operations for opening and closing the recloser mechanism.

Hydraulic Control System Operation

Explains the hydraulic pump's role in counting operations and initiating lockout.

Maintenance Procedures - General

Frequency of Maintenance

Guidance on determining maintenance intervals based on operating conditions.

Periodic Maintenance Inspection

Step-by-step instructions for a thorough periodic inspection of the recloser.

Shop Maintenance Procedures - Adjustments and Bushings

Control Lever Overtravel Adjustment

Procedure to adjust the control lever for proper overtravel.

Bushing Maintenance and Replacement

Instructions for servicing and replacing bushings on different recloser types.

Shop Maintenance Procedures - Interrupters and Solenoids

Vacuum Interrupter Replacement

Detailed steps for replacing vacuum interrupters due to wear or failure.

Closing Solenoid and Trip Solenoid Service

Steps for replacing closing solenoid contactors, coils, and series trip solenoids.

Time Delay Unit Service

Procedures for maintaining and replacing time delay units.

Electrical Testing and Mechanism Handling

Insulation Level Withstand Tests

Procedures for high-potential testing to ensure dielectric integrity.

Oil Condition

Guidelines for checking and maintaining the dielectric strength of the insulating oil.

Removing and Reinstalling Mechanism

Steps for disassembling and reassembling the mechanism from the recloser head.

Testing Procedures Reference

Reference to installation manual for detailed testing procedures.

Parts Lists

Bushing Parts List

Detailed list of parts for bushing assemblies, including catalog numbers.

Head and Tank Assemblies Parts

Exploded views and part numbers for head and tank components.

Trip Coil and Interrupter Mechanisms Parts

Lists parts for trip coil and interrupter mechanisms with catalog numbers.

Closing Solenoid and Hydraulic Parts

Parts list for closing solenoid and hydraulic control components.