Post-arc current measurement down to the ten milliamperes range
Post-arc current measurement down to the ten milliamperes range
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DOI：
10.1109/61.248285
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发表时间：
1993-10
影响因子：
4.4
通讯作者：
M. Barrault;G. Bernard;J. Maftoul;S. Rowe
中科院分区：
文献类型：
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作者：
M. Barrault;G. Bernard;J. Maftoul;S. Rowe
介绍了一种新型的弧后电流测量分流器。该分流器采用并联二极管自动插入和断开测量电阻，非常接近电流零点。实现的精度和灵敏度允许可重复测量低至几十毫安的范围，约5 MHz的带宽。此外，使用高达80 kA峰值的主电流进行重复测试，不会对这种配置造成任何问题。利用这种技术，作者发现了一种新型的弧后电流，它可以持续数毫秒而不会引起断路器故障。他们称之为复苏后的潮流。>
A novel post-arc current measuring shunt is described. This shunt employs parallel connected diodes to automatically insert and disconnect the measurement resistance, very close to the current zero. The realized precision and sensitivity allow reproducible measurements down to tens of milliamperes range, with about a 5 MHz bandwidth. Furthermore repetitive testing with main currents of up to 80 kA peak poses no problem with this configuration. Using this technique the authors have discovered a new type of post-arc current which can last many milliseconds without provoking circuit breaker failure. They call this the post-recovery current. >