The leakage current of the solar power system, also known as the square array residual current, is essentially common mode current, which is caused by the existence of parasitic capacitance between the solar power system and the earth. When the parasitic capacitance, and solar power system and the power grid forms a loop, the common mode voltage will produce common mode current on the parasitic capacitance. When the low frequency transformer is installed in the solar power system, the parasitic capacitance impedance of the transformer windings in the loop is relatively large, so the common mode current produced by the loop voltage of the CCP can be restrained. However, in a solar power system without transformer, the circuit impedance is relatively small, and the common mode voltage will form a larger common mode current on the parasitic capacitance between the solar power system and the earth, that is, leakage current.
The leakage current in the solar power system includes the DC and AC parts. If connect to the grid, the problems of the grid current distortion and electromagnetic interference will be caused, which will affect the operation of the equipment in the power grid. Leakage current may also cause the solar inverter enclosure to be electrified, which will pose a threat to personal safety.
SPS3115C Series 1-10KVA Outdoor Solar Power system
1.Pure sine wave inverter
2.Built-in MPPT solar charge controller
3.Could be built-in battery
4.Protection degree:IP55
5.Configurable input voltage range for home appliances and personal computers via LCD setting
6.Configurable AC/Solar Charger priority via LCD setting
7.Compatible to mains voltage or generator power
8.Auto restart while AC is recovering
9.Overload/Over temperature/short circuit protection
10.Configurable battery charging current based on applications via LCD setting
