Universal Bypass Switch Unit
UNB
Operation Manual
UNB2357E / Page 22 (34)
operation the LED “Synchronisation“ is off when
synchronisation follows the LED shows green
After the successfull synchronisation of the SBS with the
substitute-source, all units work with the frequency of the
substitute-source (SYNC-BUS carries the substitute-
frequency) and the LED „synchronisation “ lights;
according to the difference of the Monitoring signal
(internal PLL) to the actual sine-wave of the voltage the
synchronisation requires up to 30 sec.
SBS switches consumer load to inverter output; LED „load
on inverter “ lights