Error Code - 313 - Low Insulation Resistance - Alarm Severity Major

Thomas Garcia

Modified on: Tue, 4 Dec, 2018 at 6:19 PM

Alarm ID	Alarm Name	Alarm Severity	Possible Cause	Suggestion
313	Low Insulation Resistance	Major	Cause ID = 1 A short circuit occurs between the PV string and the PGND cable. The PV string is installed in a moist environment for a long time.	1. Check the PV string and the PGND cable. If a short circuit occurs, rectify the fault. 2. If you are sure that the impedance is less than the default value in a cloudy or rainy environment, log in to the SUN2000 APP, SmartLogger, or NMS and set Insulation resistance protection.