Electrical installation
4.8 External supply of the auxiliary supply from a secure line
Converter cabinet units
92 Operating Instructions, 07/2016, A5E03347396A
In the delivery condition, the tripping current is set as follows:
Table 4- 8 Delivery condition of the overcurrent tripping unit
Short-circuit trip, non-
delayed (I)
6SL3710-2GH42-0EA3 1948 1.0 (both switches) 2 (both switches)
Note
Consequences when the circuit breaker is incorrectly set
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.
Messages output during operation and in the event of faults are described in the Operating
Instructions in the customer DVD supplied with the device.
External supply of the auxiliary supply from a secure line
Description
An external auxiliary supply is always recommended if communication and closed-loop
control are to be independent of the supply system. An external auxiliary supply is
particularly recommended for low-power lines susceptible to short-time voltage dips or power
failures.
With an external supply independent of the main supply, warnings and fault messages may
still be displayed on the operator panel and internal protection and monitoring devices if the
main supply fails.
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