在低压供电系统内采用延时动作的漏电保护开关和分级保护技术，是解决上述问题的唯一途径。
It is the only way to solve above problems that the earth leakage circuit breaker of time lag action and the distribution protection are adopted in low voltage supply system.
在低压供电系统内采用延时动作的漏电保护开关和分级保护技术，是解决上述问题的唯一途径。
It is the only way to solve above problems that the earth leakage circuit breaker of time lag action and the distribution protection are adopted in low voltage supply system.
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