Automatic Bypass - GE TLE 160 User Manual

4.2.5 Automatic Bypass

In normal operation, the Load is supplied by
the Inverter.
When the control system detects a fault in
the Inverter, an overload condition or a short-
circuit condition, the Automatic Bypass will
transfer the critical Load to the Utility without
interruption.
When the Inverter recovers, or the overload
or short-circuit condition is corrected, the
Load will be automatically transferred back to
the Inverter.
If the UPS is unable to return to normal mode following an automatic transfer to Bypass mode, an
alarm condition will be initiated.
In case of RPA Parallel System
Each unit has its own internal Bypass.
These units are continuously exchanging information, enabling all of the internal Bypass circuits in a
Parallel System to operate simultaneously.
If the Inverter of a unit fails, its Bypass circuit remains available to the Parallel System.
It is excluded only if the unit is separated from the common bus by opening its output switch Q1.
Modifications reserved
GE_UPS_USM_TLE_SUL_M16_M50_2bU_V010.docx
Critical Power
Fig. 4.2.5-1 Block diagram Automatic Bypass
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User Manual TLE Series 160 - 500 UL S2B