Eaton W-VACi, User Manual

Page: 5 / 71

65A7355H01 November 2011 www.eaton.com 5
1 Safety
W-VAC i 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.
1.1 Safety precautions
All safety codes, safety standards and/or regulations
must be strictly observed in the installation, operation
and inspection of this device.
WARNING
WARNING indicates a hazard with a medium
level of risk which, if not avoided, may result in
death or serious bodily injury
CAUTION
CAUTION indicates a hazard with a low level of risk
which, if not avoided, could result in minor or
moderate injury or property damage only.
1.2 Safety practices
WARNING
To protect the personnel associated with
installation, operation, and inspection of these
breakers, the following practices must be
followed:

As defined in the local electrical code, only
qualified persons who are familiar with the
installation and Inspection of medium voltage
circuits and equipment should be permitted to
work on these breakers.

Read these instructions carefully before
attempting any installation, operation or inspection
of these breakers.

Always remove the withdrawable breakers from
their enclosures before performing any inspection.
Failure to do so could result in electrical shock
leading to death, severe personal injury or
property damage.

Do not work on a breaker with the secondary test
coupler engaged or fixed secondary connections
made. 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 spring 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 withdrawable circuit breaker by itself
as the only mean of isolating a high voltage circuit,
remove the circuit breaker to the DISCONNECT
POSITION and follow correct lock-out and tagging
rules, as well as all applicable codes, regulations
and work rules.

Do not leave a withdrawable circuit breaker in an
intermediate position in the cell. Always have the
circuit breaker either in the “Test” or “Service”
position. Failure to do so could result in a flash
over, death, personal injury or property damage.

Always re-insert the handle into the front panel of
the breaker after charging the closing springs.
Otherwise the circuit breaker will not operate.

Circuit breaker elements are equipped with safety
interlocks. DO NOT remove, interfere with or in
any manner defeat the safety interlocks. This may
result in death, bodily injury or equipment damage.

All personnel involved in operations carried out on,
with or near electrical installations, require to have
been instructed on the safety requirements, safety
rules and instructions applicable to the operation
of the installation.

Ensure that access and escape routes are free at
all times. Do not leave flammable materials in or
near access and escape routes.

Flammable materials must not be stored in areas
which could be affected by arcs, such as: ethers,
alcohols and alcohol based cleaners. In the event
of a fire, never attempt to extinguish a fire on the
switchgear unit before it is completely dead; this
applies to both primary and secondary switchgear.
Even if non-conducting extinguishing materials are
used, electricity may pass through the
extinguishing equipment. Never extinguish a fire
on the unit with water.
WARNING
The circuit breaker elements described in this
book are designed and tested to operate within
their nameplate ratings.
Operation outside of these ratings may cause
the equipment to fail, resulting in death, bodily
injury and property damage.
These circuit breaker elements are designed to
be installed pursuant to the iec standards.
Serious injury, including death, can result from
failure to follow the procedures outlined in this
manual. These circuit breaker elements are sold
pursuant to a non-standard purchasing
agreement which limits the liability of the
manufactor.