Shihlin electric BW-2000, Manual

Page: 39 / 42

ACB-OB
36
AIR CIRCUIT BREAKER
9. Commonly Observed Faults and Trouble-shooting
1
Problems
Serial
number
Possible causes Troubleshooting
1. The under-voltage release has no
current/voltage.
Or it is not connected
2. After intelligent release generates
tripping, the red button on the
controller panel is not reset.
3. The operation machine has no
energy storage.
circuit breaker can
not be closed 1. Check the wiring, and turn on the
power of the under-voltage release.
2. Press the reset button.
3. Choose manual operation
(Energy-storage opened after
flipping up and down the handle
on the panel seven times.)
When you hear the click sound,
energy storage is completed.
The user can also use the electric
method for the machine to store
energy.
2 1.Power of the electric operation
machine is not on.
2.Insufficient power capacity
No circuit breaker
electric power energy
storage. 1. Check the wiring, and turn on the
power.
2. Check if the operating voltage is
greater than 35% Ue.
3 1
.
Power off/no voltage
2
.
Insufficient power capacity
The closing
electromagnet
cannot make the
circuit breaker close. 1. Check the wiring, and turn on the
power.
2. Check if the operating voltage is
greater than 35% Ue.
4
1
.
Power off/no voltage
2
.
Insufficient power capacity
No circuit breaker
closing by the closing
electromagnet 1. Check the wiring, and turn on the
power.
2. Check if the operating voltage is
greater than 70% Ue.
5 Inappropriate short-delay time or
instantaneous tripping value. Sudden tripping
happens even though
the fault current does
not exceed the
short-delay. Inappropriate setup;
Reset according to the principle of
Ii>Isd>Ir..
6 The overload protection tripping is
caused by on-site overloading.
Because the overload thermal
memory fails to immediately turn
off the power and clear, reclosing
happens again. Frequent circuit
Breaker tripping Turn off the controller once or
re-close the breaker 30 minutes
later.
7 The track of the cradle or the circuit
breaker itself is not pushed in
completely. Drawer-type Circuit
Breaker handle
cannot be inserted into
the circuit breaker. The track or the circuit breaker has
to be pushed all the way to the end.
8 1.The handle was not pulled out
completely.
2. The circuit breaker was not
completely disconnected.
Circuit breaker cannot
be pulled out from the
body of drawer-type
circuit breaker at
“disconnected” position 1. Pull out the handle.
2. Make the circuit breaker to the
“disconnected” position
completely.