Safety Indications; Circuit-Breaker Closing And Opening Operations - ABB OHB Installation, Service And Maintenance

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Outdoor SF6 Circuit Breaker - Type
OHB: Instruction for Storage,
Installation, Service and
Maintenance
Original Title: ABB Breaker
Uploaded by Sampath Kumar
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6.2 Safety indications:

!
6.3. Circuit-breaker closing and
opening operations
Circuit-breaker operation can be
manual or electrical.
a) Manual operation for spring
charging :
To manually charge the closing springs,
it is necessary to fully insert the
charging lever into the seat (9) and
turn it clockwise until the yellow
indicator (6) appears. The force which
can normally be applied to the charging
lever fitted is 130 N. In any case, the
maximum force applied must not
exceed 170 N.
b) Electrical operation for spring
charging
On request the circuit-breaker can be
fitted with the following accessories for
electrical operation:
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If mechanical operations are to be carried out on the circuit-
breaker inside the installation area or with the protection nets
removed, pay great attention to the moving parts and to the
medium voltage line. If the operations are disabled, do
not force the mechanical interlocks, instead check that the
operation sequence is correct.
ABB Motor ABB Protection
Starting Br
no auxiliary supply during char
geared motor stops and then s
recharging the springs automa
the voltage is on again. It is, ho
always possible to complete th
operation manually.
c) Circuit-breaker closing
This operation can only be carr
the closing springs completely
manual closing, press the push
When there is a shunt closing r
operation can also be carried o
remote control by means of a
circuit. The indicator (11) show
closing has been accomplished
d) Circuit-breaker opening
For manual opening, press the
(13).
When there is a shunt opening
the operation can also be carri
remote control by means of a
The indicator (10) shows that o
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