User Manual

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10-539-1 MN5048DIY REV -
MN5048DIY
User Manual
6. Protection
6.1 Protections provided
No. Protections Description
1
PV current/power
limiting protection
When charging current or power of the PV array configured exceeds
the PV rating, it will charge at the rated value.
2
PV night reverse -
current protection
At night, current is prevented from flowing back into the panels.
3
Mains input over
voltage protection
When the mains voltage exceeds 280V (230V model) or 140V (120V
model), the mains charging will stop and the unit will switch to inverter mode.
4
Mains input under
voltage protection
When the mains voltage is lower than 170V (230V model /UPS mode )
or 90V (120V model or APL mode ), the mains charging will
stop and the unit will switch to inverter mode.
5
Battery over
voltage protection
When the battery voltage reaches the overvoltage disconnection
point, the PV and the mains will automatically stop charging
the battery to prevent damage to the battery from overcharging.
6
Battery low voltage
protection
When the battery voltage reaches the low voltage threshold, the unit
will stop inverting to prevent damage to the batteries from being over
discharged.
7
Load 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 again after 1 second .
8
Heat sink over
temperature
protection
When the internal temperature is too high, the unit will stop
charging and discharging; when the temperature returns to normal,
charging and discharging will resume.
9
Overload
protection
When an overload occurs, the unit will immediately stop the AC output.
The unit will try again after three minutes. After five tries, the unit won’t
try again until the unit is powered down and restarted.
Refer to the technical parameters table for information on settings.