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25
Installation
01.4IB.77020
Ch 4 Installation
A. r
eceIvInG
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-ND® Series 4 and PowlVac-NDA™
Series 4 circuit breaker on a pallet:
• Size: 42” width x 42” depth x 47” height
• Weight: 400 lbs.
shows the circuit breaker enclosed
in the carton used for shipment. The carton is
attached to the shipping pallet by 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 metal shipping brackets. When these are
removed the circuit breaker may be removed
from the shipping pallet. Refer to
Ch 4 Installation, B. Handling
, for more
information.
Figure 10 Circuit Breaker in Shipping Carton
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. 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.
B. h
AnDlInG
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
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 fork lift truck or an overhead crane.
When using a forklift 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 18 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 holes
which have been provided for hooks at the top
of the circuit breaker frame side sheets
.
