Section 2 Safe Practices - Eaton Cutler-Hammer VCP-WR Series Instructions For The Use, Operation And Maintenance

SECTION 2: SAFE PRACTICES
Type VCP-WR breakers are equipped with high speed,
high energy operating mechanisms. They are designed
with several built-in interlocks and safety features to pro-
vide safe and proper operating sequences. Cell inter-
locks, used for drawout breakers only, are meant to
interface with the appropriate cell interface, truck and
levering mechanism supplied by the customer. Details
of the VCP-WR element interfaces are shown in Figures
1-1 through 1-8 and discussed in Section 6. It is the
customer's responsibility to insure that all such
interfaces are supplied and appropriate tests conducted
to adequately prove proper functioning.
TO PROTECT THE PERSONNEL ASSOCIATED WITH
INSTALLATION, OPERATION, AND MAINTENANCE
OF THESE BREAKERS, THE FOLLOWING
PRACTICES MUST BE FOLLOWED:
• Only qualified persons, as defined in the National
Electrical Safety Code, who are familiar with the
installation and maintenance of medium voltage
circuits and equipment, should be permitted to work
on these breakers.
• Read these instructions carefully before attempting any
installation, operation or maintenance of these breakers.
• If the final breaker design is drawout, always remove
the breaker from the enclosure before performing any
maintenance. If the breaker is applied in a fixed
configuration, always make sure that primary and
I.B. 8295A61H07
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secondary power are disconnected from the breaker.
Failure to do so could result in electrical shock leading
to death, severe personal injury or property damage.
• Do not work on a drawout breaker with a
secondary test coupler engaged. Failure to
disconnect the test coupler could result in an
electrical shock leading to death, personal injury or
property damage.
• Do not work on a closed breaker or a breaker with
closing springs charged. The closing springs should
be discharged and the main contacts open before
working on the breaker. Failure to do so could result in
cutting or crushing injuries.
• Do not use a circuit breaker by itself as the sole
means of isolating a high voltage circuit, if possible.
Remove the breaker to the Disconnect position and
follow all lock-out and tagging rules of the National
Electrical Code and any and all applicable codes,
regulations and work rules.
• Do not leave a drawout breaker in an intermediate
position in the cell. Always have the breaker either in
the Test or Connected position. Failure to do so could
result in a flash over and possible death, personal
injury or property damage.
• Always remove the maintenance tool from the breaker
after charging the closing springs.
• Breakers are equipped with safety interlocks. Do Not
defeat them. This may result in death, bodily injury or
equipment damage.
• Do not work on a circuit breaker suspended from a
lifting yoke or chains. Maintenance work should be
per-formed on a properly supported cart or table.
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Instruction Book
Effective: February 2007 Page 15