Siemens UL 1066, Operating Instructions Manual

Page: 51 / 334

6 – 20
Fixed-mounted
breaker Draw-out
circuit breaker
Disturbance Possible cause(s) Remedy
X X
Circuit breaker cannot be
closed.

Circuit breaker ready to close.

Ready-to-close indicator:
1. Closing coil not energized or
incorrectly energized
Check or apply correct voltage
X
2. The secondary disconnects
have been removed
Plug in the secondary disconnects
X
Circuit breaker cannot be
moved from the withdrawn
position into the disconnected
position 1. Racking mechanism of circuit
breaker not in disconnected

(DISCON) position (Check
circuit breaker position indica-
tor)
Rack the mechanism into
disconnected position

(green position indicator)
X
Circuit breaker cannot be fitted
in the guide rails
1. Factory mounted coding of

circuit breaker and cradle does
not match.
The circuit breaker is not rated for
use in this cradle. Replace with the
proper circuit breaker (permissible
circuit breakers are listed on the
cradle type label).
X
When racking from the discon-
nected into the test position,
the circuit breaker does not
move during the first 6
rotations (approximately)
2. Not a fault

(functional property)
Continue racking
X
Racking handle cannot be
drawn out
1. Circuit breaker is closed
Press "OPEN" button and pull

racking handle block out
X
2. Cubicle door not completely
closed (Locking device as
accessory)
Close cubicle door
X
Racking handle cannot be
pushed in
1. Racking handle is interlocked
Rack circuit breaker into discon-
nected, test or connected position,
unlatch crank and push it fully in
X
Cubicle door cannot be
opened (door interlock as
accessory)
1. Closed circuit breaker is

preventing opening of

cubicle door
Open the circuit breaker
X
2. Circuit breaker in connected
position
Rack circuit breaker into test or
disconnected position