What is PID?
The PID problem is the PV performance degradation caused by high voltage to the earth for a long time.
How to identify
obviously when the PV
in low light
Zenergy PID Box Advantages
Zenergy PID Offset Box F.A.Q.
PID offset box is designed to the power generation reduction caused by PID problem in PV power station. Power generation could improves effectively by PID offset box, and to ensure the power station revenue.
PID box is in standby state during daytime, and running after inverter stop working at night. The PID offset box will stop working automatically without manual operation before inverter starts operation next day.
All PV modules have PID problems with various order of severity. PID offset box could be installed at power station no matter new or running for more than five years or even longer. The severity of the PID problems in the power station could be detected by Zenergy Tech and provide you the most suitable solution.
There are two detection methods: 1: The third party is responsible for the test but with high price. 2: Simple method is to detect the open circuit voltage of PV module under Lower light condition by multimeter. If the voltage is significantly lower than nominal value, the PV module is likely to have PID problems.
According to existing PID problem of power station, power generation could increase up to 5%~50% by repair PID problem. Under normal conditions, the power generation will rise to 95% or higher than theoretical value.
The initial repair time is depend on the environment of the plant, there is usually a significant increase in power generation between one week to one month.
PID offset box is usually connected to PV module string with simple and convenient installation.
Zenergy PID offset box has been obtained compatibility statements with SMA, Kaco, ABB/Powerone, Sungrow, and other company. The statement pointed out that Zenergy PID offset box will not have adverse effects on the inverter and PV module, in addition, effectively improve the power generation, and increase revenue for owners.
PID offset box has 5 years standard warranty. And provide 10 or longer optional warranty according to customer demand.
1: Looking at the indicator light. The PID box is only operate at night, the PV green light normally on when it is not working at day time, and HV red light flashing when working at night, at the same time, please check whether the repair voltage higher than usual.
2. Use Zenergy exclusive online monitoring cloud platform for PID products. Details of operation status and related parameters of PID products will be checked by monitoring platform.
Served countries & regions
500+ MW of PV power station successfully repaired
Over thousand units in total shipments
PID Offset Box Hights
Fast repair of PV module
Dynamically repair voltage prevent the degradation of
Low power consumpton
Wide range of input voltag
High reliability for safety
Compatible with the cathode grounding and insulation
Comprehensive protection functions
IP65 outdoor application
Auto start, easy operation and maintenance free
Smart indicator display
Output overload and short circuit protection
Smart remote monitoring (optional)
Flexible & Friendly
Parallel connection, convenient and reliable
Applicable to central and string inverters
Compact design easy installation
Various operating modes(optional)