Delta RPI-H3 Service Manual Page 48

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42
3. Driver for boost is defective
or disconnected
4. Detection circuit malfunction
the inverter
4. Check the detection circuit inside the
inverter
A31: Bus_P
Over Volt
Rating
1. Driver for boost is defective
2. Voc of PV array is over
550Vdc (RPI-H3) or 1000Vdc
(RPI-H5)
3. Surge occurs during
operation
4. Detection circuit malfunction
1. Check the driver circuit for boost inside
the inverter
2. Modify the solar array setting, and make
the Voc less than 550Vdc (RPI-H3) or
1000Vdc (RPI-H5)
3. N/A
4. Check the detection circuit inside the
inverter
A33: Bus_N
Over Volt
Rating
1. Driver for boost is defective
2. Voc of PV array is over
550Vdc (RPI-H3) or 1000Vdc
(RPI-H5)
3. Surge occurs during
operation
4. Detection circuit malfunction
1. Check the driver circuit for boost inside
the inverter
2. Modify the solar array setting, and make
the Voc less than 550Vdc (RPI-H3) or
1000Vdc (RPI-H5)
3. N/A
4. Check the detection circuit inside the
inverter
A35: Bus Volt
Over Rating
1. Driver for boost is defective
2. Voc of PV array is over
550Vdc (RPI-H3) or 1000Vdc
(RPI-H5)
3. Surge occurs during
operation
4. Detection circuit malfunction
1. Check the driver circuit for boost inside
the inverter
2. Modify the solar array setting, and make
the Voc less than 550Vdc (RPI-H3) or
1000Vdc (RPI-H5)
3. N/A
4. Check the detection circuit inside the
inverter
A36:Output
Curr Transient
Over
1. Surge occurs during
operation
2. Driver for inverter stage is
defective
3. Switching device is defective
4. Detection circuit malfunction
1. N/A
2. Check the driver circuit in inverter stage
3. Check all switching devices in inverter
stage
4. Check the detect circuit inside the inverter
A37: AC Curr
Over Rating
Detection circuit malfunction Check the detect circuit inside the inverter
A42: CT
Current
1.Inverter choke Fail
2.Output Filter Fail
1. Check Inverter choke inductance.
2. Check output filter capacitance.
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