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New generation IZM97, 99 low voltage air circuit breaker instruction manual
MN013010EN February 2020 www.eaton.com.cn
Section 2: Receiving, handling, and installation
Section 2: Receiving, handling, and
installation
2-1 General information
IZM9 air circuit breakers, when supplied as part of an
assembly, may be shipped already installed in their
respective breaker compartments. Receiving and handling
of this equipment is addressed in an assembly instruction
manual supplied with the assembled equipment. This
instruction booklet applies to only the circuit breakers.
2-2 Suggested tools
A large number of different tools are not required to properly
install and maintain circuit breakers. The following tools are,
however, suggested:
• Flat-blade screwdriver
• Phillips head screwdriver
• 3/8-inch socket (ratchet) wrench
• 10 mm socket
• 17 mm socket
• Secondary wiring removal tool
2-3 Unpacking circuit breaker
Before beginning to unpack new IZM9 circuit breakers, read
and understand these directions. Following the directions
will ensure that no damage is caused.
Shipping containers should be inspected for obvious signs
of rough handling and/or external damage incurred during
the transportation phase. Record any observed damage for
reporting to the transportation carrier and Eaton, once the
inspection is completed.
All reports and claims should be as specific as possible and
include the order number and other applicable nameplate
information. Every effort is made to ensure that circuit
breakers arrive at their destination undamaged and ready
for installation. Care should be exercised, however, to
protect the breakers from impact at all times. Do not
remove protective packaging until the breakers are ready for
inspection, testing, and/or installation.
When ready to inspect and install the circuit breaker,
carefully remove the banding straps and lift off the cardboard
box. Remove any additional packing material and internally
packed documentation. The circuit breaker and/or cassette
are mounted to a wooden shipping pallet.
On drawout circuit breakers shipped without a cassette, two
shipping clamps hook into the breaker side plates and are
held to the pallet with four lag screws (Figure 2-1). Remove
the lag screws and clamps. Save the screws and clamps for
future shipment of the breaker.
On empty cassettes, remove the four or five lag screws
and/or machine screws that pass through the floor pan of
the cassette holding it to the wooden pallet. On drawout
breakers shipped in a cassette, first remove the breaker
from the cassette using the levering mechanism and
drawout rails. After the breaker is removed, the machine
screws passing through the floor pan can be removed. On
fixed breakers, remove the lag screws passing through the
mounting feet that hold the breaker to the pallet. Circuit
breakers are designed to be easily lifted from the wooden
pallet using an appropriate lifting yoke and an overhead or a
portable lifting device.
2-3.1 Storing circuit breaker
If it is necessary to store a circuit breaker before installation,
do so in its original shipping container. Keep the circuit
breaker in a clean dry place. Ensure that there is ample air
circulation and heat, if necessary, to prevent condensation. It
is very important that the circuit breaker not be exposed to
dirt or moisture.
NOTICE
A circuit breaker that has been stored for any length of time
should be operated a minimum of five times before it is
placed in service.
Figure 2-1 Shipping clamps for drawout circuit breaker
Shipping
clamp
