This paper discusses the series of tests performed to demonstrate that for SF6 and other gas switchgear, the inrush current frequency on capacitor energization or pre-restrike is much less important than the current magnitude and often does not need to be limited. Also, the inrush current magnitude alone may not need to be limited. The limiting parameter is the ICI (Inrush Current Integral) during the pre-arc time during a making operation, before galvanic contact of the contacts is achieved. As a result, the formerly used i x f product (or di/dt) as a limitation for switchgear is less of a concern. This paper discusses the testing performed on high voltage SF6 circuit breakers to demonstrate this phenomenon and provides guidance in applications where the formerly used i x f limitation is exceeded.

中文翻译：

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F6开关柜容性浪涌电流能力


本文讨论了一系列测试，以证明对于 SF6 和其他气体开关设备，电容器通电或预重击穿时的浪涌电流频率远不如电流大小重要，并且通常不需要限制。而且，可能不需要单独限制浪涌电流幅度。限制参数是在实现触点电接触之前、接通操作期间的电弧前时间内的 ICI（浪涌电流积分）。因此，以前使用的 ixf 产品（或 di/dt）作为开关设备的限制不再那么令人担忧。本文讨论了在高压 SF6 断路器上进行的测试，以证明这种现象，并为超出以前使用的 ixf 限制的应用提供指导。