Teze TW-EOR48 - Maintenance Recommendations

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Guangdong
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44
voltage of PV module.
4
AC input over-voltage
protection
When the AC input voltage of each phase exceeds 140V, the
mains charging will be stopped and switched to the inverter
mode.
5
AC input under-voltage
protection
When the AC input voltage of each phase below 90V, the utility
charging will be stopped and switched to the inverter mode.
6
Battery over-voltage
protection
When the battery voltage reaches the over-voltage cut-off point,
the PV and the utility will automatically stop charging to prevent
the battery from being overcharged and damaged.
7
Battery under-voltage
protection
When the battery voltage reaches the under-voltage cut-off
point, the inverter will automatically stop the battery discharge to
prevent damage from over-discharging the battery.
8
Battery over-current
protection
After a period when the battery current exceeds that allowed by
the hardware, the machine will switch off the output and stop
discharging the battery.
9
AC output short-circuit
protection
When a short-circuit fault occurs at the load output terminal, the
AC output is immediately turned off and turned on after 1
second. If the output load terminal is still short-circuited after 3
attempts, the inverter must be manually restarted after first
removing the short- circuit fault from the load before the normal
output can be restored.
10
Heat sink over-
temperature protection
When the internal temperature of the inverter is too high, the
inverter will stop charging and discharging; when the
temperature returns to normal, the inverter will resume charging
and discharging.
11
Inverter over-load
protection
After triggering the overload protection the inverter will resume
output after 3 minutes, 5 consecutive overloads will switch off
the output until the inverter is restarted.
(102%<load< load < 125%) ±10%: error and output shutdown
after 10s. Load > 125% ±10%: error reported and output switched
off after 5s.
12
AC output reverse
Prevents AC back flow from the battery inverter to the bypass AC
input.
13
Bypass over-current
protection
Built-in AC input over-current protection circuit breaker.
14
Bypass phase
inconsistency
protection
When the phase of the bypass input and the phase of the inverter
split do not match, the inverter disables switching to the bypass
output to prevent the load from dropping out or short-circuiting
when switching to the bypass.
9.2 Maintenance
To maintain optimum and long-lasting working performance, we recommend that the following items
are checked twice a year.
1. Ensure that the airflow around the product is not blocked and remove any dirt or debris from the
radiator.
2. Check that all exposed conductors are not damaged by sunlight, friction with other surrounding
objects, dry rot, insect or rodent damage, etc. The conductors need to be repaired or replaced if
necessary.
3. Verify that the indications and displays are consistent with the operation of the equipment, note