KRB-5404
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4-2-4. Contact status of auxiliary and position switches
Tables 18 and 19 show the contact status of auxiliary switches and position switches respectively.
Table 18-1 Contact status of auxiliary switches
ACB state
Breaker
body position
ON
OFF
Status of
a-contact
Status of
b-contact
CONN.
ON
OFF
OFF
ON
TEST
ON
OFF
OFF
ON
ISOLATED
ON
OFF
OFF
ON
Removed
ON
OFF
OFF
ON
Table 18-2 Contact status of auxiliary switches (When pursuant to ship classification society rules)
ACB state
Breaker
body position
ON
OFF
Status of
a-contact
Status of
b-contact
CONN.
ON
OFF
OFF
ON
TEST
ON
OFF
OFF
ON
ISOLATED
ON
OFF
OFF
ON
Removed
ON
OFF
OFF
ON
Table 19 Contact statues of position switches
Position indication
Switch
ISOLATED
TEST
CONN.
Status of
a-contact
Status of
b-contact
CONN. position indication
ON
OFF
OFF
ON
TEST position indication
ON
OFF
OFF
ON
ISOLATED position indication
ON
OFF
OFF
ON
Inserted position indication *
ON
OFF
OFF
ON
* "Inserted" means that the breaker body is in the CONN., TEST, or ISOLATED position.
4-3. ON-OFF Button Cover Locking Procedure
Lock the button cover using a padlock with ø6 shackle (up to 3 padlocks can be used) as shown in Fig. 32. The ON-OFF button
cover is locked and the ON and OFF buttons cannot be operated.
Fig. 32 Locking the ON-OFF button cover
ON-OFF button cover
OFF button
Padlock
ON-OFF button cover
ON button
ON-OFF button cover locking
hole
