| 摘要 |
PURPOSE:To reduce the cost for developing a breaker and the cost for constructing testing facilities by supplying an operation command for every block of breaker units to an operating mechanism at the same time. CONSTITUTION:A short-circuit generator 31 supplies a necessary short-circuit current i1 to a partial breaker 15 through a backup breaker 32, switch 33, reactor 34 for current adjustment, transformer 35, and auxiliary breaker 36. A high voltage source circuit 30 discharges a gap 38 at time t2 before the current zero point t3 of the short-circuit current i1 for testing the charge of a previously charged capacitor 37 to superpose a current i2 nearly determined by the capacitor 37 and reactor 39 on the short-circuit current i1 with the same polarity so that the zero point t4 of the current i2 arrives behind a zero point t3. The breaker 36 completes breaking operation at t3 to disconnect a large current source 29 from the high voltage source 30. Then, a current for attenuating oscillation is flowed to use the sum v1 of voltages developed across the resistance 40 and capacitor 41 as a restriking voltage, testing the breaking performance of breakers 5 and 6. |
