Catalog Table of Contents

Safety …………………………………………………………………………        Page 2

Specifications & Accessories for New Switches

Switch Types ………………………..……….……………….………………..   Page 4

Switch Ratings Table ……………………………………………………….   Page 14

Switch Accessories ………………………………..……………………….    Page 15

Service Equipment …………………..…………………………………….   Page 16

Switch Controls …………………….…….…………….…………………..     Page 19

Power Requirements for Solenoid Operated Switches ……     Page 26

Maintenance

Inspection, Testing, and Adjustment Instructions …………….   Page 27

Fastener Torque Requirements ……………..………………………..   Page 32

Sample Data Recording Sheets …………………………………………  Page 33

Switch Wiring Schematics ………………..……………………………    Page 35

Cable Color Codes ……………………..………………………………..…     Page 39

Switch Replacement Parts ……………….…………………………….    Page 40

Housings & Solenoids ………………….………………………………….   Page 45

Motor Mechanism Assembly ……………………………………………  Page 53

Joslyn Control Circuit Boards ………………..…………………………   Page 57

Replacement Parts List ……………………………………………………   Page 58

Reference Materials

Failure Diagnostic Charts …………………………………………………  Page 67

Recommended Maintenance Schedule ………….…………………. Page 72

Analyzing Vacuum Interrupter Module Failures ……..……….. Page 76

Failures Not Visible …………………..…………………………………….. Page 76

Overheating Evidence ………………..…………………………………    Page 77

Explosive Force ……………………………………………………………     Page 78

Switch Mechanical Failures ……………..…………………………….  Page 80

Cotter Pin Failure ………………….……………………………………….  Page 80

Module Failure …………………..………………………………………….. Page 80

Solenoid Operated Switches …………….…………………………….. Page 83

Catastrophic Switch Failure …………….…………………………….. Page 84

Motor Operated Switches …………….……………………………….  Page 92

Loss of VBM and VBT Adjustments …………..…………………… Page 95

VBU Switches ………………………………………………………………   Page 100

Modules ……………………..……………………………………………….. Page 100