Download Print this page

ABB DB BREAKER Retrofitting Manual page 2

Advertisement

MAKING THE SYSTEM SAFE FOR INSTALLATION
The following warnings and precautions must be respected before installing the new cradle and circuit breaker in
the switchgear.
Ÿ Place the switchgear housing and the legacy circuit breaker out of service.
Ÿ Disconnect the power from the switchgear (power circuit and auxiliary circuits) and verify it is disconnected
from all sources of energy.
Ÿ Set the legacy circuit breaker to the open position with the springs unloaded.
Ÿ Double check to ensure that the line has been placed out of service.
NOTE: The trained personnel in charge of handling and lifting must use appropriate safety equipment.
DB -25
Tools Required:
Drill bit (Ø.228")
1
Remove the legacy OEM circuit breaker
Ÿ Open the door of the switchgear.
Ÿ Refer to the OEM installation manual for instructions to
remove the breaker from service.
Ÿ Rack out the breaker using the DB rack out leverage
tool (fig. 1).
WARNING: THE CIRCUIT BREAKER COULD DROP WHEN
LIFTING. FASTEN IT TO A LIFTING TRUCK BEFORE
PROCEEDING.
Ÿ Extract the circuit breaker according to the procedures in
the OEM installation manual (fig. 2).
Ÿ Disconnect and remove any auxiliary signaling devices that
will not be used with the new Emax 2 CiC adapter.
Ÿ Remove all the tools and equipment used for the extraction
and clean off the processing residues and metal scraps.
DB BREAKER
A
Drill Machine
B
Phillips Screwdriver
Fig. 1
Fig. 2

Advertisement

loading

This manual is also suitable for:

Emax 2Db-25Db-50E-1.2E-2.2