I.B. 3A74791H04
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Effective 7/97
FIGURES
Figure
Title
Page
1-1
Type W-VAC 36kV Circuit Breaker Outlines and Dimensions...................................................................3
3-1
Circuit Breaker Shown Mounted with Ramp Still in Shipping Position.......................................................5
3-2
Circuit Breaker Shown Being Moved Carefully Down Attached Ramp......................................................6
3-3
Optional Fifth Wheel Shown in Use ...........................................................................................................6
3-4
Front View W-VAC 36kV Vacuum Circuit Breaker ....................................................................................8
3-5
W-VAC 36kV Vacuum Circuit Breaker with Front Cover Removed...........................................................9
3-6
Rear View W-VAC 36kV Vacuum Circuit Breaker ...................................................................................10
3-7
Typical W-VAC 36kV Escutcheon ...........................................................................................................11
4-1
Type W-VAC Circuit Breaker Manual Charging Handle in Use ...............................................................12
4-2
Type W-VAC Circuit Breaker (Bottom View) ...........................................................................................15
5-1
Rear View Showing Pole Unit Enclosure.................................................................................................16
5-2
Plate Over Rear Truck Opening 2000A Breakers and Above .................................................................16
5-3
Graphic Representation of Arc Interruption .............................................................................................17
5-4
Closing Cam and Trip Linkage ................................................................................................................19
5-5
Charging Schematic ................................................................................................................................21
5-6
Typical 36kV W-VAC “DC” and “AC” Control Schematics .......................................................................22
5-7
Secondary Circuit Breaker Plug Shown Mounted Lower Left..................................................................23
5-8
Undervoltage Trip Device Configuration..................................................................................................25
6-1
Lubrication Points ....................................................................................................................................28
6-2
Rear Measurement for Contact Erosion Being Made (Circuit Breaker Closed).......................................31
6-3
Graphical Representation of Contact Erosion Measurement (Circuit Breaker Closed) ...........................31
6-4
Side View of Loading Spring Indicator (Circuit Breaker Closed) .............................................................32
6-5
Graphical Representation of Contact Wipe Measurement
of Loading Spring Indicator (Circuit Breaker Closed) ..............................................................................32
TABLES
Figure
Title
Page
1.1
Type W-VAC Vacuum Circuit Breaker Rated in Accordance with IEC-56 ................................................2
3.1
W-VAC Circuit Breaker Weights ...............................................................................................................7
5.1
Circuit Breaker Timing.............................................................................................................................23
6.1
Torque Guidelines...................................................................................................................................27
6.2
Test Voltage ............................................................................................................................................30
6.3
Typical Resistance Measurements .........................................................................................................33
7.1
Recommended Renewal Parts for ANSI Rated Breakers.......................................................................36
Summary of Contents for Cutler-Hammer W-VAC
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