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6. From the System Menu select Operation > Turn on/off > System on.
7. Wait until the two LEDs on the left front of all Power modules are green and the system
transfers the load from bypass to inverter.
This takes about 2 minute.
The UPS is now operating normally.
4.3.
Surge protector malfunction alarm
The UPS is equipped with a MOV-type (Metal Oxide Varistor) surge arrestor. If the surge arrestor
malfunctions, a system alarm is generated. The MOV surge protector makes use of one of the
input dry contacts to transmit the alarm to the UPS. This relay is normally open, and closes when
the surge arrestor detects a malfunction.
4.4.
LVD battery protector
The LVD battery protector is a mechanism that protects the batteries from deep discharge. You
can read about the LVD battery protector in the User Guide.
The Battery CB trip coil must have a tripping voltage of 48 Vdc to be supplied from the system.
The following diagram shows how to wire UPS to enable the LVD battery protector. Wire should
be 12AWG or of a cross-section area 2.5 mm
For additional information about configuring the LVD function, refer to the UPS
User Guide.
UPS for 208 Vac Grid, B60US-IB Installation Guide, doc. rel. 3.0
2
is recommended.
Figure 58: LVD wiring diagram
73
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