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23) indicates TEST ISOLATED. 23) indicates CONNECTED.
The position reached stable and allows for any inspections the
circuit-breaker.
B) The circuit-breaker (moving part) and fixed part are fitted with lock which prevents the fixed part from being racked into the circuit-breakers
with different rated current: the congruence the anti-racking-in lock must checked the operator before carrying out the racking-
in operation avoid any unnecessary stress. 28
NOTES
In relation the fixed part, the circuit-breaker (moving part) can take
up different positions, identified follows:
- DISCONNECTED: the moving part inserted the fixed part
WITHOUT any connection between the power term inals and
WITHOUT coupling the sliding contacts for the auxiliary circuits: in
this position all electrical operation the circuit-breaker prevented.
- TEST ISOLATED: the moving part inserted the fixed part
WITHOUT any connection between the power terminals, but WITH
the sliding contacts coupled for the auxiliary circuits.
Push the moving part far the stop the fixed part.
Close the compartment door. this position,
the circuit-breaker can operated for the offline tests. The
switchgear compartment door can closed.
- CONNECTED: the moving part fully inserted the fixed part WITH
the connection both the power terminals and the sliding contacts
for the auxiliary circuits.
Model y
A pparatus Emax DC
S cale
D oc-N 1SDH000635R0002
Page No.
a) Positioning the moving part the fixed part the
DISCONNECTED position
Lift the moving part shown the paragraph (3) and insert the
fixed part guide, tilting shown figure 29.
Fig.
On the front the indicator (9, Fig.ckin -in tio n
WARNING
A) Open the circuit-breaker before carrying out any racking-in/out operation. Remove the lifting
devices. The
indicator (9, Fig. The circuit-breaker operational.
C) Before the racking-in operation, remove any padlock the segregation shutter the isolation terminals the fixed part. 23) indicates DISCONNECTED. The indicator
(9, Fig.
17/108
.
The manual connection must allow the edge (E) the circuit-breaker
guide slide under the blocks (D) the fixed part
