タイトルまたは説明

General deseription:

Short circuit and earth fault indicator is divided into two types A and B, type Bwith signal remote transmission funetion, Its in the digestion absorption Basedon similar advanced products at home and abroad, for urban and rural power gridring network distribution system design of a special automatic monitoringdevice.In a Ring network power distribution system, especially in the extensiveuse of Ring net load switch (Ring Main Unit) system, if happened to the nextlevel in the distribution network system short cireuit or ground fault, at the nexthigher level power supply system must be specified in between the breaker, inorder to prevent major accidents. In the breaker protection, belonging to the levelof network system All the power. Through the use of this product, can rapidlyand accurately indicate the faulty parts, greatly save the lookup Part of the time,reduce the outage time and power scope, improve power supply reliability.

Working Principle:

When the power supply circuit has a short circuit or earth fault occurs, the shortcircuit current in earth or produce electromagnetie field changes, fixed in Cablesensors on the measuring coil produce pulse signal, when the value of the pulsesignal reach or exceed the size of the set of fault The current value. faultindicator automatically memory fault state, fault indicator lights flashing issuedinstructions, at the same time by long range alarm interface, and the fault signaltransmitted to the monitoring center, the staff through fault indicator signal canpromptly and accurately to line fault location, timely troubleshooting, restorepower supply.