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22
Installation
PowlVac
®
STD Vacuum Circuit Breaker
IB-60201
If necessary, the circuit breaker can be moved
by a fork lift truck or an overhead crane.
When using a fork lift truck take care to avoid
components located under the circuit breaker
floor pan. The forks on the truck should be set
for a dimension over the forks of 28 inches.
The forks should then ride under the wheel
axles. The circuit breaker can also be lifted by
an overhead crane using the two lifting points
which have been provided for hooks at the top
of the circuit breaker frame side sheets
(Figure 10).
Figure 10 Circuit Breaker on Crane
c. S
torAGe
It is recommended that the circuit breaker
be placed into service immediately in its
permanent location after completing the
commissioning tests. If this is not possible, the
following precautions must be taken to ensure
the proper storage of the circuit breaker:
1. Since moisture has an adverse effect on
the insulating parts, the circuit breaker
should be carefully protected against
condensation, preferably by storing it in a
warm dry room of moderate temperature,
such as 40°-100°F. Circuit breakers used in
outdoor metal-clad switchgear should be
stored in the equipment only when power
is available and the anti-condensation
heaters are in operation.
2. The circuit breaker should be stored in a
clean location free from corrosive gases or
fumes. Particular care should be taken to
protect the equipment from moisture and
cement dust, as this combination has a
corrosive effect on many parts.
Figure 11 Circuit Breaker in Shipping Carton
3. Unplated surfaces of the operating
mechanism, such as, rollers and latches,
should be coated with grease/oil to prevent
rusting.
If the circuit breaker is stored for any length
of time, it should be inspected periodically
to see that rusting has not started and to
ensure good mechanical condition. If the
circuit breaker is stored under unfavorable
atmospheric conditions, it should be
cleaned and dried before being placed into
service.