电网频率对过电流保护装置的影响

Low Voltage Apparatus(2012)

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Abstract
随着航空工业发展,出现了变频电源。过电流保护装置为适应变频电源要求,需在理论和试验上分析和研究变频对其的影响。研究结果表明,在一定范围内,变频对热、过电流保护装置和电子型过电流保护装置影响较小。
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Key words
grid frequency,protection device,over-current,proximity effect,skin effect
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