Tests on breaking three-phase low inductive currents were carried out with two medium-voltage SF/sub 6/ breakers using different breaking techniques; the puffer method and the rotating arc. The statistical interpretation of the chopped currents and overvoltages produced by the two types of equipment showed that the two technologies performed satisfactorily, that is without excessive stresses for the system in service (in particular no successive restrikes on breaking) and with acceptable overvoltages caused by chopping. The typical values of the chopped currents measured were less than 1 A for rotating arc, and 3 to 8 A for puffer type circuit breaker. The overvoltages generated by the rotating arc circuit breaker (typically 2 p.u.) remain perceptibly lower than those caused by the other circuit breaker (typically 3 p.u.), even when using the former equipment at a voltage higher than its rated voltage. The results obtained are in line with the theory and experimental results.
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机译：使用两个中压SF / sub 6 /断路器，使用不同的断开技术对三相低感应电流进行了断开测试；河豚法和旋转弧。对两种类型的设备产生的斩波电流和过电压的统计解释表明，两种技术的性能令人满意，即在使用中的系统不会承受太大的压力（特别是不会产生连续的折断），并且斩波会导致可接受的过电压。对于旋转电弧，测得的斩波电流的典型值小于1 A，对于吹气式断路器，该值通常为3至8A。旋转电弧断路器产生的过电压（通常为2 p.u.）仍然明显低于其他断路器产生的过电压（通常为3 p.u.），即使在电压高于其额定电压的情况下使用旧设备时也是如此。获得的结果与理论和实验结果一致。
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