Siemens Sentron WL, Operating Instructions Manual, Page: 62 / 374

6 – 12 3ZX1812-0WL00-0AN4
6.9 Troubleshooting
1)
Safety feature!
This remedy action amounts to a reversal (disabling) of a safety pre-
caution installed earlier. Please do ensure that such disabling is now
permissible / authorized!
Fixed-mounted
circuit- breaker Draw-out
circuit breaker
Disturbance Cause Remedy
X X circuit breaker cannot be
closed and circuit breaker
not
ready to close.
Ready-to-close indicator
shows:
1. Spring not charged Charge spring
X X 2. Undervoltage release not
energized
Energize undervoltage release
X X 3. Mechanical reclosing lock-out
effective
Rectify cause of overcurrent trip-
ping and press reset button
X X 4. Electrical closing interlock
effective
Switch off control voltage for inter-
locking
1)
X X 5. “OFF” locked off by cylinder
lock (accessories)
Unlock
1)
X X 6. “OFF” locked off by
padlocks
(accessories)
Remove padlocks
1)
X X 7. “Mechanical OFF” button
locked off (accessories)
Unlock the “Mechanical OFF”
button
1)
X X 8. “EMERGENCY OFF” button
engaged in operating position
(accessories)
Release “EMERGENCY OFF”
button
1)
by rotating it
X X 9. Lockout against closing with
cubicle door open effective
(accessories)
Close cubicle door
X X 10. Mutual mechanical circuit
breaker interlocks effective
(accessories)
Open second circuit breaker or rack
into disconnected
position
1)
X X 11. Electronic overcurrent release
(trip unit) missing or incorrectly
installed
Fit electronic overcurrent release
properly
X X 12. Shunt trip energized De-energize shunt trip
X X 13. Closing coil energized Closing coil has to be de-energized
shortly for reclosing
X 14. Racking handle withdrawn Rack circuit breaker into discon-
nected, test or connected position,
unlatch crank and push it fully in
discharged
CHARGED
6.9 Störungsbeseitigung → (Seite 6-10)