Siemens Sentron WL - Page 53

6 – 13
6.9 Troubleshooting
1)
Safety feature!
This remedy action amounts to a reversal (disabling) of a safety
precaution installed earlier. Please do ensure that such disa-
bling is now permissible/authorized!
Fixed-
mounted
Draw-out
breaker
Disturbance Cause Remedy
XX
Circuit-breaker cannot be closed
and circuit-breaker not ready to
close.
Ready-to-close indicator shows:
1. Spring not charged Charge spring
XX
2. Undervoltage release not
excited
Energize undervoltage release
XX
3. Mechanical reclosing lock-out
effective
Rectify cause of overcurrent
tripping and press reset button
XX
4. Electrical closing interlock
effective
Shut off control voltage for
interlocking
1)
5. „OFF“ locked off by cylinder
lock
(accessories)
Unlock
1)
6. „OFF“ locked off by
padlocks
(accessories)
Remove padlocks
1)
XX
7. „Mechanical OFF“ button
locked off
(accessories)
Unlock the „Mechanical OFF“
button
1)
8. „EMERGENCY OFF“ button
engaged in operating position
(accessories)
Release „EMERGENCY OFF“
button
1)
by rotating it
XX
9. Lockout against closing with
cubicle door open effective
(accessories)
Close cubicle door
XX
10. Mutual mechanical circuit-
breaker interlocks effective
(accessories)
Open second circuit-breaker or rack
into disconnected position
1)
XX
11. Electronic overcurrent release
(trip unit) missing or incorrectly
installed
Fit electronic overcurrent release
properly
XX
12. Shunt trip energized
Deenergize shunt trip
XX
13. Close coil energized
Closing coil has to be deenergized
shortly for reclosing
X
14. Racking handle withdrawn Rack circuit-breaker into
disconnected, test or connect
position, unlatch crank and push
crank fully in