| 摘要 |
<p>PURPOSE:To achieve a compound interruption test as prescribed by applying a transient recovery voltage by the current injection to an opening breaking unit of a breaker while a transient recovery voltage by the voltage overlapping method is applied between the tank of the breaker and the ground. CONSTITUTION:A compound tester has a short-circuiting power source 10, a voltage source 11 for the current injection method and a voltage source 12 for the voltage overlapping method. One end of the voltage source 11 for the current injection method is connected to a leader 7 of a sample breaker 1 while the other end thereof is connected to a secondary winding 178 of a short-circuit transformer 17. One end of the power source 12 for the voltage overlapping method is connected to the tank 3 of the sample breaker 1 while the other end thereof is connected to the secondary winding 178 of the short-circuiting transformer 17. Then, overlapping both the transient recovery voltages from the two voltage sources enable the matching of the initial rise rate, the peak value and the peak time of the transient recovery voltage with the prescribed transient recovery voltage. Thus, the transient recovery voltage as prescribed is applied to perform a compound test of a tank type breaker.</p> |
