Auto Pulse Current Test System for SPD
Wei Sun · Gao dianya jishu · 2005
A special CDN(couple and decouple network) is studied according to the feature of pulse current test for SPD(surge protective device) live test. The CDN has the characteristics of small volume and strong pulse current endurance. On the basis of this, an auto pulse current measuring system for SPD is developed, the system comprises of impulse current generator, PLC, CDN, power tracking circuit and intelligent digital peak measuring instrument. It can carry out common and different mode tests for SPD, the maximum impulse current amplitude is up to 100 kA.