Areva FP 73 - 10. Replacement of a pole

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10 Replacement of a pole
10.1 General Instructions
Never separate the control
mechanism from the circuit
breaker part.
Never dismantle the linkages
from the poles.
It is forbidden to replace
several poles on the same
circuit breaker.
Each pole has its own
reference. The replacement
pole absolutely must bear the same
reference as the pole being
replaced.
On certain circuit breakers,
this replacement operation
requires specific training or
intervention by our After Sales
Dept. (See § 1.1).
Replacement operations
described in this instruction
manual have been carried out on
the leading" pole. The same
simplified process applies to led"
poles (See § 10.3).
Intervention Duration Busbar Cables Load Break Switch Earthing switch
Possible 4 h 00* energized de-energized open closed
Normal 4 h 00* de-energized de-energized open closed
* Variable depending on the circuit
breaker's equipment.
Apply the General Safety
Instructions for Electrical
Applications and the particular
regulations for the network
concerned for locking out
procedures.
Greases: (See §2.6)
Tools required:
- Open-ended spanners size
10, 13, 16, 17, 19
- 1 ratchet handle
+ 10, 16, 17 mm sockets
- Allen keys for hexagonal screws
size 5
- Tape mesure + rule
- Pin punch + hammer
- Flat-nose pliers
- Flat headed screwdriver
Parts required:
The replacement kit contains:
- 1 pole (identical characteristics),
- 1 bag of new fasteners,
- 1 bottle of thread lock,
- 1 operating lever,
- 1 plug gauge,
- 1 adjustments sheet 470133,
- 1 instruction manual AMTNoT055.
10.2 Preparation of the circuit breaker
De-energize the circuit
breaker, power circuit and
auxiliaries (disconnect the circuit
breaker from its surrounding
environment).
Before lifting off the cover of
the control mechanism:
- cut off the motor power circuits,
- operate the operating button
several times, in both directions, in
order to ensure that the springs
have been released,
- cut off all of the other auxiliaries
power circuits,
Bring the pressure on the pole
being replaced to 0.5 bar.