About The photovoltaic inverter shows that the ground resistance is too low
If the inverter displays the event numbers 3501, 3601 or 3701, there could be a ground fault. The electrical insulation from the PV system to ground is defective or insufficient.
If the inverter displays the event numbers 3501, 3601 or 3701, there could be a ground fault. The electrical insulation from the PV system to ground is defective or insufficient.
Just finished install of LVX6048WP 8kw set up. I am getting a fault code F13. Manual says: "The resistance between PV and ground is too low. PV ISO fault. 1. Check the wire and panels which may cause the leakage." I have triple checked all wires and connections everything is correctly installed.
In photovoltaic systems with a transformer-less inverter, the DC is isolated from ground. Modules with defective module isolation, unshielded wires, defective Power Optimizers, or an inverter internal fault can cause DC current leakage to ground (PE - protective earth). Such a fault is also called an isolation fault.
If a definite ground fault cannot be measured and the message is still displayed, measure the insulation resistance. Reconnect the strings without ground faults to the inverter and recommission the inverter (see inverter installation inverter).
Event number 35, 3501 or 3503 indicate that. the inverter has detected a ground fault in the PV array or. the insulation resistance is too low. Cause. Possible causes for this are damaged PV connectors, DC cables or PV modules. The Riso value can vary depending on the weather (humidity/moisture on the modules).
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6 FAQs about [The photovoltaic inverter shows that the ground resistance is too low]
What happens if the ground resistance of a solar inverter is too low?
If the ground resistance of a PV string connected to a solar inverter is too low, the solar inverter generates a Low Insulation Resistance alarm. A short circuit occurs between the PV array and the ground. The ambient air of the PV array is damp and the insulation between the PV array and the ground is poor.
Can a PV inverter be touched?
Touch the cables of the PV array on the insulation only. Do not touch any parts of the substructure or frame of the PV array. Do not connect PV strings with ground faults to the inverter. Ensure that no voltage is present and wait five minutes before touching any parts of the PV system or the product.
What causes a riso error in a PV inverter?
the insulation resistance is too low. Possible causes for this are damaged PV connectors, DC cables or PV modules. The Riso value can vary depending on the weather (humidity/moisture on the modules). The error is not caused by the inverter; it is in the DC installation. In the event of a ground fault, high voltages can be present.
Can a transformerless inverter cause a ground fault?
The error is not caused by the inverter; it is in the DC installation. In the event of a ground fault, high voltages can be present. Do not touch the cables, the substructure, the frame or the modules of the PV array. Transformerless inverters can be damaged by sporadic ground faults in the module array if they occur during operation.
How do I find a ground insulation fault in a solar inverter?
If two or more ground insulation faults occur in a single PV string, the following method cannot locate the fault. You need to check the PV modules one by one. The AC power supply is connected, and set the DC switch at the bottom of the solar inverter to OFF. Connect each PV string to the solar inverter and set the DC switch to ON.
What happens if a PV inverter shows the event number 3501?
If the inverter displays the event numbers 3501, 3601 or 3701, there could be a ground fault. The electrical insulation from the PV system to ground is defective or insufficient. If a ground fault occurs, parts of the system may still be live. Touching live parts and cables results in death or lethal injuries due to electric shock.