~1  GPJ-3100 Series short circuit and earth fault indicator
The GPJ-3100 series of short circuit and earth fault indicator is designed for testing and indicating short circuit and earth fault in real time. It is applied to monitor circuitry in RMU, overhead line, power cable distribution line, box-type transformer and other similar places. According to alarm signal showed by indicator, workers can figure out and cut off fault area rapidly when short circuit or earth fault occurring in the circuitry, so the system can recover supplying power for non-fault area promptly to save time and enhance efficiency.

2  Functions GPJ-3100 Series short circuit and earth fault indicator
1) Short circuit alarming
2) Earthing alarming
3) Auto reset
4) Test / Reset
5) Transmit alarming information remotely
6) Alarming indication with low voltage of the battery

3  Technical data of GPJ-3100 Series short circuit and earth fault indicator

1) Short circuit alarming current: 100A to 1000A time delay 40ms
2) Earthing alarming current: 20A,30A,40A,50A,60A ± 10% time delay 40ms
3) Temperature range : -25 to +70 ℃
4) Humidity range: ≦ 95%
5) Earth lead length: 3.5m
6) Conduct optical fiber length 4 m
7) Power supply: lithium battery 3.6V/2.45Ah
8) Auto-reset time: 7s, 2hrs, 4hrs, 8hrs
9) Output relay: 120 V AC 1A, 30V DC 2A
10) Main controller dimension : 95 × 50 × 80mm
11) Cutting hole size : 91 × 44 mm
12) Protection class : Main Controller :IP40, Sensor:IP65

4  Main Features
1) High reliable MCU to get low consumption when monitoring.
2) Passive sensor.
3) Long-life lithium battery as power supply.
4) Three phases detect independently.
5) Used optical fiber to transmit short circuit signal, separate from high voltage, have good safety and high reliability.
6) Self-lock output relay.

~Contact us now by gp(at)sinogp.com for more information.