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Instructions for VR-Series
Replacement Breakers for
Westinghouse Type B20B/B22B
IB01301018E
I.B. 94A1994R01
Page 4
Effective: April 2005
Figures
Figure 1-1 Outline and Dimensions in inches of Type B20B / B22B-VR Breakers (B22B-VR Shown) ............................................. 6
Figure 3-1 B20B / B22B-VR Tools and Accessories .............................................................................................................................. 8
Figure 3-2 Overhead Lifting of B22B-VR ................................................................................................................................................ 8
Figure 3-3 Front External View of Breaker (B22B-VR Shown) .......................................................................................................... 10
Figure 3-4 Back External View of Breaker (B22B-VR Shown) ........................................................................................................... 11
Figure 4-1 Alignment of B20B/B22B-VR (B22B-VR Shown) ................................................................................................................. 13
Figure 4-2 Insertion of B20B/B22B-VR (B22B-VR Shown) ................................................................................................................... 13
Figure 4-3 B20B/B22B-VR Test / Disconnect Position (B22B-VR Shown) .......................................................................................... 14
Figure 4-4 Rack-In Position of Handle .................................................................................................................................................. 15
Figure 4-5 B20B/B22B-VR Connected Position (B22B-VR Shown) ..................................................................................................... 15
Figure 5-1 B20B/B22B-VR Interrupter ................................................................................................................................................... 16
Figure 5-2 B20B/B22B-VR Interrupter Assembly ................................................................................................................................ 16
Figure 5-3 Ground Plate Alignment Check ......................................................................................................................................... 17
Figure 5-4 B22B-VR Vacuum Element - Front Faceplate Removed ................................................................................................... 20
Figure 5-5 Closing Cam and Trip Linkage ........................................................................................................................................... 21
Figure 5-6 Charging Schematic ............................................................................................................................................................ 22
Figure 5-7 Typical AC/DC Schematic .................................................................................................................................................... 23
Figure 5-8 TOC Operator ....................................................................................................................................................................... 24
Figure 5-9 Static Grounding Contact .................................................................................................................................................... 24
Figure 6-1 Lubrication Areas ................................................................................................................................................................ 25
Figure 6-2 Vacuum Interrupter Showing Contact Erosion Indicator With Breaker Open ............................................................. 28
Figure 6-3 Vacuum Interrupter Showing Contact Erosion Indicator With Breaker Closed .......................................................... 28
Figure 6-4 The Arrow Shows The “T” Contact Wipe Indicator - Example with Blue Spring ......................................................... 29
Figure 6-5 Wipe Indication Procedure ................................................................................................................................................. 29
Figure 6-6 Status Indicators ................................................................................................................................................................. 30
Figure 6-7 Wrapping Tape Around Cam .............................................................................................................................................. 30
Figure 6-8 Attaching CloSure
Figure 6-18 Typical Circuit Breaker Front View with CloSure
Tool Attached ............................................................................... 33