1 UPS output
2 Circuit breaker for mains output
3 Mains input
4 Communication interface
5 Input over-voltage protection (RJ 45)
6 Output over-voltage protection (RJ 45)
7 Circuit breaker for mains input
Fig. 3-2 - 6 Back view of MTD 3000RM
All the plug connections on the back (exception: RS232 interface) are on
potential mains in the connected state.
Even in an unconnected state, dangerously high voltage on the plug con-
nections can result from the capacities charged within the device.
As soon as the mains input voltage is present, the charging unit is automatical-
ly active. Meaning, the internal battery bank is already being charged without
the UPS being started.
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