Eaton 380 VCP-W 21, Instructions For Installation, Operation And Maintenance

Page: 14 / 62

Page 8
I.B. 3A74792H08
Effective
09/2014
Figure 1-2 Type VCP- WR 38kV Fixed Circuit Breaker Outlines and Dimensions (inches and [mm])
SECTION 2: SAFE PRACTICES
2-1 RECOMMENDATIONS
Type VCP-W and VCP-WR Vacuum Circuit Breakers are
equipped with high speed, high energy operating
mechanisms. They are designed with several built-in
interlocks and safety features to provide safe and proper
operating sequences. Cell interlocks used with drawout
circuit breakers are meant to interact with the appropriate
cell interface and levering mechanism.
WARNING
TO PROTECT THE PERSONNEL ASSOCIATED WITH
INSTALLATION, OPERATION, AND MAINTENANCE
OF THESE CIRCUIT 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 circuit breakers.

Read these instructions carefully before attempting any
installation, operation or maintenance of these circuit
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 con-
figuration, always make sure that primary and
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 circuit 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 circuit breaker or a
breaker with closing springs charged. The closing
springs should be discharged and the main circuit
contacts open before working on the circuit
breaker. Failure to do so could result in cutting or
crushing injuries.
 Do not use an open circuit breaker by itself as the
sole means of isolating a high voltage circuit.
Remove the circuit breaker to the Disconnect
position and follow all lock-out and tagging rules of
the National Electrical Code and any other
applicable codes, regulations and work rules.

Do not leave a drawout circuit breaker in an
intermediate position in the cell. Always have the
circuit breaker either in the Disconnect/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
circuit breaker after charging the closing springs.
• Circuit breakers are equipped with safety
interlocks.
Do Not
remove, interfere with or in any
manner 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 solid work surface, such as the
floor.