Safety Feature - Moeller IZM Manual De Instrucciones

6.9 Troubleshooting
Fixed-moun- Withdrawa-
ted breaker ble breaker
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1) Safety feature!

This remedy action amounts to a reversal (disabling) of a
safety precaution installed earlier. Please do ensure that such
disabling is now permissible / authorized!
6 – 12
Disturbance
Circuit-breaker cannot be closed
Circuit-breaker not ready to close
Ready-to-close indicator shows:
Circuit-breaker cannot be closed
though the circuit-breaker is ready to close
Ready-to-close indicator:
Cause
1. Spring not charged
2. Undervoltage release not excited
3. Mechanical reclosing lock-out effec-
tive
4. Electrical closing interlock effective
(a page 8-3)
5. "Safe OFF" locked off by cylinder lock
(accessories)
6. "Safe OFF" locked off by padlocks
(accessories)
7. "Mechanical OFF" button locked off
(accessories)
8. "EMERGENCY OFF" button engaged in
operating position
(accessories)
9. Lockout against closing with panel
door open effective (accessories)
10. Mutual mechanical circuit-breaker
interlocks effective (accessories)
11. Electronic overcurrent release missing
or incorrectly installed
12. Racking handle withdrawn
1. Closing release not energized or inco-
rrectly energized
2. Circuit-breaker in disconnected posi-
tion in withdrawable unit
3. Have been removed the auxiliary con-
nectors
Remedy
Charge spring
Energize undervoltage release
Rectify cause of overcurrent tripping and
press reset button
Shut off control voltage for interlocking
1)
Unlock
1)
Remove padlocks
Unlock the "Mechanical OFF" button
1)
Release "EMERGENCY OFF" button
rotating it
Close panel door
Open second circuit-breaker or rack into
1)
disconnected position
Fit electronic overcurrent release properly
Rack circuit-breaker into disconnected,
test or connect position, unlatch crank and
push crank fully in
Check or apply correct voltage
Rack circuit-breaker into test or connected
position
Plug in the auxiliary connectors
10/02 AWB1230-1407E/GB
1)
1)
by