Check Before Installing - ABB Emax 2 Installation And Maintenance Manual

Check Before Installing

Danger

Ensure only qualified personnel install, operate, service and maintain all electrical
equipment

These Emax 2 Retrofill breakers are of two types. AK 25 & 50 circuit breakers are replaced
by standard Emax 2 drawout breaker for a Cradle in Cradle (CiC) solution & AKT 50 has a
hollow back EntelliGuard R Cradle and uses a customized Emax 2 circuit breaker. The AK
25 & 50 uses the existing Emax 2 cassette racking arrangement to rack in and out the
breakers while AKT 50 has special EntelliGuard cassette equipped with AK style 7 point
bullet connectors which interface with the original AKD-5 secondary disconnect blocks.
The cassette also has a new racking mechanism. Two cams in this cassette engage pins
on the new breaker to pull it into the cassette. The new breaker has primary disconnect
fingers which will directly connect to the primary stab tips in the AKD-5 switchgear.

Check to see that the breaker or breakers match their respective compartments.

Read the front view drawings, breaker nameplate, and the identification card on the
breaker shipping carton.

To match the breaker to its proper compartment, refer to the breaker location list on the
front view drawing.

If applicable, the neutral disconnect assembly block and bracket within the
compartment must be removed. Removing this item should be done only after the
breaker, is removed from the compartment,
de-energized of primary and control power.
Note: Cassette = Cradle = Substructure
24| © 2020 Emax 2 Retrofill Circuit Breakers 600A-4000A

It must be ensured that the supply power to
the compartment
compartment is de-energized for all the
incoming and outgoing circuits of the LVS
prior to any work being conducted on it.

During the installation and related work on
the equipment, it must be ensured that the
operator is using the prescribed PPE for the
specified tasks.
and the compartment has been completely
is turned off/
2TSA451011P0000 Rev-B