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Q : E007 insulation impedance is low / E010 leakage current is too large
A: Possible causes:
1. The DC cable is scratched and damaged during construction, resulting in poor insulation to the ground;
2. The component joints are lack of protection, the joints are exposed to the outside, and the joints placed in the trunking are soaked in water; the connectors are not firmly inserted and ablated;
3. DC SPD failure;
4. Abnormal photovoltaic module;
5. Poor grounding of photovoltaic system (modules and supports);
1. The DC cable is scratched and damaged during construction, resulting in poor insulation to the ground;
2. The component joints are lack of protection, the joints are exposed to the outside, and the joints placed in the trunking are soaked in water; the connectors are not firmly inserted and ablated;
3. DC SPD failure;
4. Abnormal photovoltaic module;
5. Poor grounding of photovoltaic system (modules and supports);
Solutions:
1. The inverter is connected to the inverter one by one. If the series can not be connected to the grid normally after startup, it indicates that there is a problem. You can also directly use a digital multimeter to measure the voltage between the positive and negative poles to the ground;
2, For the component joints exposed to the outside and placed in the trunking soaked in water, check all the joints and make sure they are placed at the back of the module or where water can't reach.
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