Siemens SINAMICS G150 Operating Instructions Manual page 135

For rated currents of more than 800 A (single units) and above 1380 A (units that are
connected in parallel) and with a live line voltage, dangerous voltages are present in the
cabinet unit even when the circuit breaker is open. The cabinet unit must be completely
deenergized when carry out work (observe the 5 safety rules).
Setting the release current for the circuit breaker
When delivered, the circuit breakers are set to the rated current of the cabinet unit on the line
side. Depending on the plant configuration, it can make sense to set lower values. The
appropriate specifications are given in the operating instructions supplied with the circuit
breaker.
In the delivery condition, the tripping current is set as follows:
Table 4- 42 Delivery condition of the overcurrent tripping unit
Order number
6SL3710-1GE38-4AAx
6SL3710-1GE41-0AAx
6SL3710-2GE41-6AAx
6SL3710-1GF38-1AAx
6SL3710-1GH38-1AAx
6SL3710-2GH41-5AAx
CAUTION
The settings specified above should be checked. Incorrect settings can cause unwanted or
delayed tripping of the circuit breaker and result in damage to the cabinet unit.
Diagnostics
Messages output during operation and in the event of faults are described in the Operating
Instructions in the customer DVD supplied with the device.
Converter cabinet units
Operating Instructions, 03/2012, A5E03263466A
DANGER
Output current
840 A
985 A
1560 A
810 A
810 A
1500 A
Overcurrent trip (L)
1.0
0.9
1.0 (both switches)
1.0
1.0
0.9 (both switches)
Electrical installation
4.11 Other connections
Short-circuit trip, non-delayed (I)
2
2
2 (both switches)
2
2
2 (both switches)
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