Low Power Generation

Modified on Tue, 10 Oct 2023 at 01:19 PM

1. If installation is new then please check connectivity is proper or not of AC gland make sure AC cable connect properly  in  connector  terminal  only.  (The  polarity  is clearly mentioned on AC gland).

2.   Check for any loose connection in MC4 connector.

3.   Please  ensure  all  the  MC4  connectors  are  properly crimped.

4. Please check the VOC of all of the PV strings (Voltage should  check  from  connector  end  after  disconnect string from inverter).

5. Use a multi-meter to check the voltages between PV+ and earth, PV- and earth of all the PV strings. It should be decreasing from values between 5% and 95% of single PV module Voc. If voltage stuck on above single module  VOC  or  in  decreasing  condition  if  voltage getting increase that means there is some fault with that strings.

6. If system is three phase (Check AC side voltage Phase to  Phase,  phase to  neutral and neutral to  earthing.) Always  check  reading  from  inverter  AC  gland  end. {Some time customer makes 2phase to 3 phases by sorting.

7. If system is single phase (Check AC side voltage Phase to neutral, phase to earthing and neutral to earthing.) Always check reading from inverter AC gland end.

8.   Set DRM is OFF. You will get this in Advance setting>> STD. Mode settings>> Initial setting.

9.   Set  CV  mode  STOP.  You  will  get  this  in  Advance setting>> Special setting>> Const. Voltage mode.

10. If EPM device not using then please stop the fail-safe mode from internal EPM set. Also model select should be off.

11. Working mode should be Null, you will get in advance setting>> STD. Mode setting.

12. Make Grid ON from advance setting- because in some of new HMI upgraded inverter by mistake someone set the GRID-STOP option instead of GRID-ON. Don’t use Grid-Stop option.

13. Kindly confirm shadow on panels.

14. Take complete reading of information menu like DC1, DC2, DC3, DC4  then VA, VB, VC  or VGrid  then Status (Error) and Total energy.

15. Take reading from advance info Alarm messages, version, running messages, warning messages.

16. Take ACDB, DCDB close and clear photo, inverter serial no. which is stick on inverter body and inverter complete installation photo.

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