The detection of partial discharge is necessary because the series connection of photovoltaic modules will generate high DC voltage. High voltage and corresponding higher electric field strength will lead to micro breakdown in the insulation material of the terminal used. Small discharge will cause fatigue of the material and eventually lead to breakdown of the insulating material. Wenzhou Dreamfly company uses DC and AC voltage for partial discharge detection, and measures the potential difference between the two potentials and between the potential and the shell.
Shanghai terminal block has the following advantages:
The local immersion solution is used for brazing or pressing.
Fully compatible with surface packaging technology.
Fully integrated into the automated installation process.
There is no need for additional space within the workshop.
No additional investment costs are usually required.