Shield T3 60 – 500KVA User Manual
43
Indicator
State
Description
Steady red
Battery abnormal (battery failure, no battery or battery
reversed) or battery converter abnormal (failure, over
current or over temperature) , EOD
Flashing red Battery low voltage
Off
Battery and battery converter normal, battery not
charging
Bypass
indicator
Steady
green
Load supplied by bypass
Steady red
Bypass abnormal or out of normal range, or static bypass
switch fault
Flashing red Bypass voltage abnormal
Off
Bypass normal
Inverter
indicator
Steady
green
Load supplied by inverter
Flashing
green
Inverter on, start, synchronization or standby (ECO mode)
for at least one module
Steady red
System output not supplied by inverter, inverter fault for
at least one module.
Flashing red
System output supplied by inverter, inverter fault for at
least one module.
Off
Inverter not operating for all modules
Load
indicator
Steady
green
UPS output ON and normal
Steady red
UPS overload time is out, or output short, or output no
power supply
Flashing red Overload output of UPS
Off
No output of UPS
Status
indicator
Steady
green
Normal operation
Steady red
Failure
There are two different types of audible alarm during UPS operation, as shown in Table
3-2.
Table 3-2
Description of audible alarm
Alarm
Description
Two short alarm
with a long one
when system has general alarm (for example: AC fault),
Continuous alarm
When system has serious faults (for example: fuse blown or
hardware failure)
3.1.2
Control and Operation Keys
Control and operation keys include four keys of 2, 10, 11 and 12(See Figure3-1), which
are used together with LCD touch screen. The functions description is shown in Table 3-
