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3.4 Protections and automatic restarts
Overload
Some loads like motors or pumps draw large inrush currents in a start-up situation. In such circumstances, it is possible that the start-up
current exceeds the over current trip level of the inverter. In this case the output voltage will quickly decrease to limit the output current
of the inverter. If the over current trip level is continuously exceeded, the inverter will shut down: wait 30 seconds and then restart.
After three restarts followed by another overload within 30 seconds of restarting, the inverter will shutdown and remain off. The LEDs
will signal shutdown due to overload. To restart the inverter, switch it Off, then On.
Low battery voltage (adjustable)
The inverter will shut down when the DC input voltage drops below the low battery shutdown level. After a minimum delay of 30
seconds, the inverter will restart if the voltages rise above the low battery restart level.
After three restarts followed by a low battery shutdown within 30 seconds of restarting, the inverter will shutdown and stop retrying.
The LEDs will signal low battery shutdown. To restart the inverter, switch it Off, and then On, or recharge the battery: as soon as the
battery has risen and then stays above the Charge detect level for 30 seconds, it will switch on.
See the Technical Data table for default low battery shutdown and restart levels. They can be changed with the VictronConnect App.
High battery voltage
Reduce DC input voltage and/or check for a faulty battery- or solar-charger in the system. After shutting down due to a high battery
voltage, the inverter will first wait 30 seconds and then retry operation as soon as the battery voltage has dropped to acceptable level.
The inverter will not stay off after multiple retries.
High temperature
A high ambient temperature or enduring high load may result in shut down to over temperature. The inverter will restart after 30
seconds. The inverter will not stay off after multiple retries. Reduce load and/or move inverter to better ventilated area.
High DC ripple
High DC ripple is usually caused by loose DC cable connections and/or too thin DC wiring. After the inverter has switched off due to high
DC ripple voltage, it waits 30 seconds and then restarts.
After three restarts followed by a shutdown due to high DC ripple within 30 seconds of restarting, the inverter will shutdown and stops
retrying. To restart the inverter, switch it Off and then On.
Continuous high DC ripple reduces the inverter life expectancy.
