...30min,+125℃,30min 循环5次δr≤5%r，δ(uab/uac)≤±5%振动(vibration)：10-500hz,0.75mm,6h电气间断(electrical interruption)：≤100/us δr≤5%r,δ(uab/uac)≤±7.5 characteristcs标称阻值范围（range of normal resistance)：50ω2mω阻值允许偏差（res...
Should some of the roughly 300 transformers that are the backbone of our electrical grid be damaged or destroyed, the interruption to the electrical grid will not be brief.
Electrical frequencies and voltages drop as power line currents increase, necessitating automatic or manual interruption of loads (blackouts) to protect grids.