Delta RPI H3A User Manual

ERROR
Message
E28: Slow Under
Voltage Range
E30: DC Volt
Over Rating
E34: Ground Fault
1. Actual utility voltage is under
the UVR setting
2. Incorrect country or Grid setting
3. Detection circuit malfunction
1. Actual Solar1 voltage is higher
than 550Vdc
2. Detection circuit malfunction
1. PV array insulation fault
2. Large PV array capacitance
between Plus to Ground or
Minus to Ground or both.
3. Detection circuit malfunction
1. Check the utility voltage on the
inverter terminal
2. Check country & Grid setting
3.
Check the detection circuit inside
the inverter
1.
Modify the solar array string layout
and reduce the Voc below 550Vdc
2. Check the detection circuit inside
the inverter
1.
Check the insulation of Solar inputs
2. Check the capacitance, dry PV
panel if necessary
3. Check the detection circuit inside
the inverter
Possible cause Action
44
Measurement, Error Message and Trouble Shooting

Delta RPI H3A Specifications

General

Brand	Delta
Model	RPI H3A
Category	Inverter
Language	English