Universal Bypass Switch Unit
UNB
Operation Manual
UNB2357E / Page 8 (34)
Following steps are required to connect the unit with
inverters of the series UNV as well as PWS:
System-wiring checks (high-voltage-connections;
synchronous-cable; CAN-BUS, if used)
Checking, that the inverter as well as the STATIC BYPASS
SWITCH SBS is switched off
Power supply sources 1 and 2 in disconnected voltage
free condition with opened fuses of the STATIC BYPASS
SWITCH SBS to be connected
AC-consumer load to be connected
Fuses to be closed
Switches on the STATIC BYPASS SWITCH SBS via front-
key
Adjustment of the real-time-clock
Inverter switch ON