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21
Installation
IB-60201
Ch 4 Installation
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When the circuit breaker is received check for
any sign of damage. If damage is found or
suspected, file all claims immediately with the
transportation company and notify the nearest
Powell representative.
Estimated size and weight for shipping a
PowlVac® STD vacuum circuit breaker on a
pallet:
• Size: 42” width x 42” depth x 47” height
• Weight: 675 lbs.
Figure 11 shows the circuit breaker enclosed
in the carton used for shipment. The carton is
attached to the shipping pallet by two metal
bands. Remove these bands and lift the carton
from the pallet so that the circuit breaker is
visible. The circuit breaker is attached to the
pallet by three metal shipping brackets. When
these are removed the circuit breaker may
be removed from the shipping pallet. Refer
to
Ch 4 Installation,
B. h
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,
for more
information.
When a metal-clad switchgear assembly is
installed in a Power Control Room, a circuit
breaker housed in the lower circuit breaker
compartment may be shipped installed in the
equipment. In these cases, the circuit breaker
will be in the test/disconnected position and
it will be bolted to the compartment floor by
use of a shipping bracket (Figure 9, a). The
horizontal leg of the bracket is bolted to the
compartment floor and the vertical leg is
bolted to the front of the circuit breaker using
the lower cover bolts. Remove these four bolts,
discard the shipping angle, and replace the
four bolts.
Figure 9
Circuit Breaker with Shipping Bracket
a
a. Shipping Bracket
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After the circuit breaker has been removed
from its shipping pallet it may be rolled on
its own wheels on a level surface. This is the
preferred way of handling the circuit breaker.
When rolling the circuit breaker it should be
pushed and steered by the steel frame or the
front cover.
Do not handle or move the circuit breaker by
the primary disconnecting devices, as damage
may occur.
CAUTION
CAUTION
!
