电表报警灯闪烁是怎么回事?以威胜三相电表DTZ341举例
智能电表在使用中,在某些特殊场景下会有指示灯的闪烁,以提醒用户加以注意。但是如果指示灯常亮,那可能就意味着产品出现故障问题了。
一、电表报警灯常亮的原因
1、IC卡电表,电费低于50元,提醒用户要充值。
2、电表中的电池没电了,或电表长期闲置主板电池没电了,需要用户统一换电池。
3、失压报警:当电表的某一相或多相电压没有电压,或低于额定电压的70%时,电表的报警灯会闪烁。用户应检查自己操作有没有问题,如没问题,检
查线路是否正常。
4、失流报警:当电表三相电压大于电能表的临界电压,三相电流中任一相或两相小于启动电流,或没有电流,其他相线负荷电流大于5%额定电流时,电表的报警灯会闪烁。用户应检查是否为电表、互感器、线路故障,如是应更换电表和互感器,整理线路。
5、缺相报警:当电表三相电源中其中一相断电,报警灯会亮。用户需检查线路,找出原因。
6、电压、电流不平衡报警:当电表的三相电压、电流不平衡,报警灯会闪烁。如电压、电流不平衡的波动不大,可以不予理会,波动大要检查线路及用电设备。
二、需要注意的事项:
1、要正确选择所需要的电能表,电能表的额定电压应和负载额定电压相符,电能表的额定电流应大于负载的最大电流。
2、要注意电能表的倍率。有的电能表的读数需乘以一个系数,才是电路实际消耗的电能。
3、电能表应由供电部门指定的电工进行安装,安装后用户不得随意拆开铅封。
4、电能表应垂直安装在清洁、干燥、无强磁场、易于读数的地方。
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