The signals due the relative operations are
given correctly. The signals
are correct.
15/158
. Then put the circuit-breaker the
connected, test isolated and disconnected
position. Supply the undervoltage release the
corresponding rated voltage (if any).
The signals are correct.
The geared motor reloads the springs after
each closing operation. The first turns the crank handle
do not meet with particular resistance. The
signals are correct.
The circuit-breaker opens. Attempt circuit-breaker
closing operation.
Carry out some racking-in and out operations.
ite d
1 Manual operating mechanism
2 Geared motor (if any)
3 Undervoltage release
(if any)
4 Shunt opening release (if any)
5 Shunt closing release (if any)
6 Circuit-breaker lock the open position
(with key padlocks)
7 Auxiliary contacts the circuit-breaker
8 Auxiliary contacts for signalling circuit-
breaker connected, test isolated and
disconnected
9 Lock vice circ it-b rs
connected and disconnected.
The circuit-breaker closes correctly.Putting into service
6.
The circuit-breaker closes correctly.
P itiv ck
The spring loading lever moves correctly.
Open the circuit-breaker.
Insertthe auxiliary contacts suitable signalling
circuits. The signals
are correct.
The signals are given correctly.
S upply the undervoltage release the
corresponding rated voltage and carry out the
circuit-breaker closing operation.
Both anual and electrical closing are
prevented.
The circuit-breaker opens correctly.2).1 eneral s
- Check tightness the power connections the circuit-breaker terminals
- Carry out all the preparatory operations the release
- Make sure that the value the auxiliary circuit power supply voltage between and 110% the rated voltage the electrical applications
- Make sure that there adequate air circulation the place installation avoid overheating
- Also carry out the checks specified the following table.
Insertthe auxiliary contacts suitable signalling
circuits.
Supply the spring loading geared motor the
corresponding rated voltage.
Close the circuit-breaker.
Disconnect voltage the release. Interlocking
devices between circuit-breakers side by
side and one top another (if any)
10 For withdrawable circuit-breakers: racking
-in/out device
P re
Carry out some opening and closing operations
(see the chapter 7.
Supply the shunt closing release its rated
voltage.
The springs are loaded correctly.
CAUTION
When there undervoltage release, the
circuit-breaker can only closed after the
release has been electrically energized.
The locks function correctly.
Open the circuit-breaker, turn the key and
remove from its seat.
S upply the undervoltage release the
corresponding rated voltage and carry out the
circuit-breaker closing operation. The signal changes
over.
Supply the shunt opening release the
corresponding rated voltage.
Model 2234 Apparatus Scale
L 2778
Doc-Na 1SDH000460R0002
Page No.
The geared otor stops with the springs
loaded.
Carry out the operating tests.
C arry som sin and ning
operations. Carry out some circuit-breaker closing
and opening operations.
Note.
Racking-in operation: the circuit-breaker racks
in correctly
