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.)
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