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配电室绝缘胶垫介绍

日期:2022-02-04 03:11
浏览次数:180
摘要:
   配电室绝缘胶垫按一样法子挨次测得别的泄电相的泄电电流。为防备路线上存在相线接地产生大电流毁坏仪表,检测时先将钳形电流表挡位放在大电流挡位上;假设检测值很小,再将钳形电流表挡位转换到毫安挡检测。确定了存在泄电的相线后,接地线断定泄电的地位法子是:在配电变压器处,将要查抄的相线插上熔断器芯,中性线和别的两相的熔断器均断开,登杆用钳形电流表检测带电相线断定泄电地位。 
  检测时,配电室绝缘胶垫单相用户的相线和中性线要同时放在钳形电流表的闭口内,三相电用户的三根相线和中性线也要同时放进闭口内假设没有泄电妨碍,这时候负荷电流磁通的相量和为零,钳形电流表批示也为零;若有泄电电流时,钳形电流表可检测出泄电电流来。 
  接地线查抄用户外部路线和装备有没有泄电法子是:在该用户的电源进户线处用钳形电流表丈量泄电电流,同时将用户的用电装备、灯具逐一投入加入,经由过程看钳形电流表检测泄电电流的变革来查找泄电的装备和灯具。断定残剩电活动作庇护器自己是否有问题法子是:在配电变压器处,将节制低压路线的交换打仗器出线侧相线上的熔断器断开,假设此时残剩电活动作庇护器能畸形投运,则证明残剩电活动作庇护器是好的。 

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