When the injection molding machine is started, the local discharge interference is large. The interference is reduced by building a new shielding chamber and adding a high-performance filter

The customer produces cable accessories. Once the injection molding machine inside the company is turned on, the interference is large, reaching more than 20 pC, which affects the partial discharge test;

According to the partial discharge waveform analysis provided by the customer, the interference is mainly transmitted through space and power supply; Propose solutions:

1. Build a new partial discharge shielding room to shield the interference transmitted through space;

2. The newly increased performance power filter is used to filter the interference of power transmission;

The customer agreed with the solution. After the construction of the shielding room and the newly increased performance power filter, the background interference was 0.18pC, and the injection molding machine switch was not affected. The problem that affected the partial discharge test was completely solved.