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12. Spare parts and accessories
All assembly operations of spare parts/
accessories must only be carried out by
ABB personnel or by the customer’s suitably
qualified personnel, in compliance with the
instructions enclosed with the spare parts
and accessories themselves (IEC 60694, CEI
EN 60694 sect. 10.4.2).
If maintenance is carried out by the
customer’s personnel, responsibility for the
interventions remains with the customer.
Before proceeding with any operation,
always make sure that the circuit-breaker is
open, the springs discharged and that it is
not energised (medium voltage circuit and
auxiliary circuits).
12.1 List of spare parts/Accessories
– Opening release
– Undervoltage release
– Contact for signalling undervoltage release energised/de-
energised
– Time delay device for undervoltage release
– Mechanical override for undervoltage release
– Closing release
– Spring loading geared motor with electrical signalling of
springs loaded
– Gearmotor thermomagnetic protection circuit-breaker
– Contact for signalling gearmotor protection circuit-breaker
open/closed
– Contact for signalling closing springs loaded/discharged
– Auxiliary contacts of the circuit-breaker
– Opening solenoid
– Open position key lock
– Opening pushbutton protection
– Closing pushbutton protection
– Opening/closing knob
– Gas refill kit
– 5-liter SF
6
gas cylinder
– SF
6
gas pressure monitoring device
– Current sensors
– PR521 protection releases
– Connector complete with sheath
– Wheel Kit
– Operation counter
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