Insulation Fault; Manual Shutdown - Ingecon Sun 250 M220 Indoor Installation Manual

Ingeteam

9.4.6. Insulation fault

Alarm 0400h is related to an insulation fault and can be one of two types:
• external to the unit. This is the first thing you should check.
• Internal to the unit.
external to the unit
To check whether the insulation fault is external to the unit, see
whether the Rpv+ and Rpv- impedances are displayed on the
display screen (selecting the fifth screen from the monitoring
menu). given the insulation fault, one or both will be 0 or a low
figure.
Disconnect the power and open the Dc isolating switch. If the
Rpv+ and Rpv- impedances cease to be invalid, the fault is in the
PV array. If one of them is balancing out and gives an interme-
diate reading, the inverter is triggering the insulation fault.
Inspect the installation.
Internal to the unit
If the insulation fault is caused by the unit, you must cut the Dc power supply and wait 10 minutes before opening
the inverter for the first time. First, ensure that the 64-way ribbon cable on the AAP0019 control board is correctly
inserted into the J1 intake board.
If the fault is not as specified earlier, it will be necessary to look for it in the Dc and/or Ac part of the unit.
In the Dc part of the unit, you will need to check the arresters and wiring. using a multimeter, check that the resist-
ance and ground capacitance of each pole of the Dc battery bus is the same.
In the Ac part of the inverter, check that the resistance of each of the inverter's outputs to ground are in the MΩ
range. check also that the Q2x filter or the wiring of the unit's fans aren't producing the earth fault. To do so, open
Q2x to separate circuits. If the ground fault is caused by the filter you will need to check the wiring. If the fans are
causing the ground fault, you will need to disconnect terminals u1n.x3.6 and X8n.6.

9.4.7. Manual shutdown

code Alarm
0100H Manual shutdown
88
Reason for shutdown
Manual shutdown
L1x
Q2x
R2x
R1x
Switching harmonics filtering
Description
Manual shutdown with the emergency push button via
display or communications.
Installation manual
R3x
AAV2000IKI01