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54
Instruction Booklet
IB131006EN
Effective March 2019
Instructions for installation,
operation, and maintenance of type
VCP-W vacuum circuit breakers
EATON
www.eaton.com
Testing procedures
Assuming that the breaker is safely pulled out to the Test/Disconnect
position in the enclosure or placed on the workbench, follow this
procedure to perform the CloSure test. For further instructions on
disconnecting the circuit breaker consult Section 4 of this manual. If
the enclosure is equipped with the MOC operating in the test posi-
tion also, make certain that the MOC is connected to operate.
1. On the front cover identify the status indicators.
Make sure the
closing spring status indicates “Discharged” and the main
contact indicator shows “Open”
(Figure 7).
2. Remove the circuit breaker front cover.
Be sure to save the
original fasteners for reassembly.
3. Cut a piece of one-inch (25.4 mm) wide drafting/masking tape
approximately 8 to 10 in. (203 to 254 mm) long.
Figure 30. Starting tape at the bottom of the cam.
Figure 31. Wrapping tape up around the cam.
4. Place the tape around the cam starting from the bottom up.
Make certain that the tape adheres well to the cam surface (see
Figures 30, 31, and 32).
Figure 32. Attaching tape around to the back of the cam.
Figure 33. Attaching CloSure test tool at hole “A”.
Figure 34. Attaching CloSure test tool at “B”.
5. Mount the transparent CloSure test tool with two bolts and
washers. Refer to Figures 43, 44, and Table 26 for appropriate
mounting holes. Hand tighten the bolts (Figures 33, 34, 43,
and 44).