Technical information
and start-up
BSC624-12V-B
66
The functional routine of the pre-charging unit is as follows:
1.
The main contactor (3) closes.
2.
The pre-charging contactor (1) closes.
Ensure that the pre-charging contactor (1) as well as the pre-charging resistor R
P
(4) are designed for the
maximum pre-charging current. Please note that the pre-charging contactor (1) must be able to interrupt
the pre-charging current in the case of a fault!
Monitor the pre-charging time and open the pre-charging contactor (1) again if the condition U
1
- U
2
< 10 V is not fulfilled even after a specified maximum period.
3.
The main contactor (2) closes.
The main contactor (2) may only close if the condition U
1
- U
2
< 10 V is fulfilled.
4.
The pre-charging contactor (1) opens.
The HV connection to the device is now produced.
