Carry out the operating tests.
Model 2234 Apparatus Scale
L 2778
Doc-Na 1SDH000460R0002
Page No. The
signals are correct. The signal changes
over.
Carry out some racking-in and out operations. Carry out some circuit-breaker closing
and opening operations.
Both anual and electrical closing are
prevented.
Supply the shunt closing release its rated
voltage.
Insertthe auxiliary contacts suitable signalling
circuits.
CAUTION
When there undervoltage release, the
circuit-breaker can only closed after the
release has been electrically energized.
Insertthe auxiliary contacts suitable signalling
circuits.2).
Close the circuit-breaker.
The circuit-breaker closes correctly.
Racking-in operation: the circuit-breaker racks
in correctly.
S upply the undervoltage release the
corresponding rated voltage and carry out the
circuit-breaker closing operation.
Note. Then put the circuit-breaker the
connected, test isolated and disconnected
position.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.
Supply the spring loading geared motor the
corresponding rated voltage. The signals
are correct.
Open the circuit-breaker. The first turns the crank handle
do not meet with particular resistance. Supply the undervoltage release the
corresponding rated voltage (if any). Attempt circuit-breaker
closing operation.
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. 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. The signals
are correct.
The circuit-breaker closes correctly.
The circuit-breaker opens correctly.
The circuit-breaker opens.
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 signals are given correctly.
C arry som sin and ning
operations.
The geared motor reloads the springs after
each closing operation.Putting into service
6.
The signals due the relative operations are
given correctly.
Disconnect voltage the release.
The locks function correctly.
The geared otor stops with the springs
loaded.
The springs are loaded correctly.
15/158
.
The signals are correct.
P itiv ck
The spring loading lever moves correctly.
Supply the shunt opening release the
corresponding rated voltage
