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PowlVac® CDR 27kV & 38kV Vacuum Circuit Breaker
IB-65020A
Installation
Ch 4 Installation
A. r
eceIvInG
When the circuit breaker is received, check
for signs of damage. If damage is found or
suspected, file claims as soon as possible with
the transportation company and notify the
nearest Powell representative.
Estimated size and weight for shipping a
PowlVac® CDR 27kV or 38kV circuit breaker on
a pallet:
• Size: 42” width x 42” depth x 47” height
• Weight: 750 lbs.
Figure 12 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
AndlInG
,
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/disconnect position and it
will be bolted to the compartment floor by use
of a shipping bracket. 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 12 Circuit Breaker in Shipping Carton
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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.
CAUTION
CAUTION
!
Do NOT handle or move the circuit breaker
by the primary disconnecting devices, as
damage may occur.
If necessary, the circuit breaker can be moved
by a lift truck or an overhead crane. When
using the lift truck, load the circuit breaker
front first onto the lift and ensure that it is
secured to the lift truck. The circuit breaker
can also be lifted by an overhead crane using
the two lifting points (Figure 13) which have
been provided for hooks at the top of the
circuit breaker frame side sheets. The circuit
breaker will tilt backward when it is lifted by
