Abstract
The synthetic test is a method to evaluate the interrupting capability of a gas circuit breaker (GCB) used for power system. Because the quality of equivalent circuit will be decided by the starting control of the voltage source, the starting control system with highly stabilized operational characteristics becomes necessary. Recently, because the rated voltage of the testing GCB becomes high and the interrupting capacity becomes large, the voltage of the electrical source becomes high and the current becomes large also. For this reason the starting characteristic of the old starting system became unstable. To solve this problem, a new starting system, using SF6 gas gap switch and laser triggering system, has been developed. In this paper, the development and the test result of the new starting system will be reported.
