KEHUA TECH MY-A Series, Руководство пользователя

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6 Use and Operation
MY-A Series (10kVA-20kVA) UPS
User Manual
90
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Generally, the working life of battery is 3 to 5 years. If battery is not so good, replace it in time.
The battery replacement should be performed by authorized professional.
6.7 Troubleshooting
6.7.1 Common Fault
As shown in Table6-1, it only includes some common fault diagnosis. If any doubt, contact the local
office or distributor for details.
Table6-1 Troubleshooting
Fault phenomenon Possible reason
The mains normal, after starting
the UPS, it outputs normally,
but it works in the battery mode
and the buzzer beeps
intermittently.
Check if the contactors and wiring terminals in the input circuit
are in good condition;
Check if the displayed input voltage amplitude or frequency of
mains on the LCD/touch screen is beyond the allowable range
of UPS;
Check if the mains input breaker is disconnected, if yes, please
close the breaker again.
After installing UPS, connecting
with power will fuse the fuse or
cause tripping operation.
The wiring of UPS input or output is short circuit.
After starting, the LCD/touch
screen display and output are
normal. But once connecting
with load, it will stop outputting
immediately.
UPS is overload seriously or the output circuit is short-circuit.
Please reduce load to proper capacity or find the short-circuit
reason. The common reason is that the output changeover
socket short-circuit or the input short-circuit after UPS damage;
The load is not started according to "high power device
→
small power device". Restart the UPS, and after the UPS works
steadily, start high power load first, and then start small power
ones successively.
Buzzer long beeps, fault
indicator lights on, UPS works
in bypass mode and inverter
failure.
The output is overload. The load is too heavy and beyond the
rated power of the UPS. Please reduce load or select a UPS
with larger power capacity. If it is temporary bypass caused by
impact of load start and recovers automatically, it still is