19 – 7
19.1.6
Mechanical interlocking source and tie circuit breaker (open transition to standby system)
The standby system is mechanically interlocked with the tie circuit breaker to prevent paralleling with primary source.
Description:
One circuit breaker (S
1
) can be opened and closed independently of the two others. The two others cancel each other out, i.e. one can only
be closed if the other is open.
Materials required:
Two of the three circuit breakers (S
2
, S
3
) each have an interlocking module and a Bowden cable.
Order no.
Connections of Bowden cables:
Example
Possible circuit breaker states
S
1
S
2
S
3
1st Bowden cable:
S
2
A
1
-
S
3
E
1
2nd Bowden cable:
S
3
A
1
-
S
2
E
1
S
1
S
2
S
3
Summary of Contents for UL 1066
Page 56: ...7 5 7 2 Frame size II fused ...
Page 58: ...7 7 ...
Page 63: ...7 12 8 27 210 0 8 27 210 0 8 27 210 0 3 75 95 2 ...
Page 64: ...7 13 ...
Page 65: ...7 14 7 7 Frame size III fuse carriage ...
Page 66: ...7 15 ...
Page 69: ...7 18 7 9 External sensor for neutral conductor WLNCT2 ...
Page 70: ...7 19 WLNCT3 ...
Page 85: ...9 5 I tripping Ground fault tripping ...
Page 231: ...15 12 Pre assembling the locking module Installing 0767 1 2 3 4 6 5 ...
Page 232: ...15 13 1 Socket head cap screw M5 with washer and nut 7 8 Size 4 5 Nm 45 lb in ...
Page 289: ...23 7 23 3 3 Installing arc chutes 1 2 6 5 PH 2 0043 02 3 4 5 6 For frame size III 3 PH 2 ...
Page 298: ...23 16 6 7 8 9 5 2 1 Size 5 mm ...
Page 333: ......