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HOME > PRODUCTS > Short Circuit & Earth Fault Indicator
 
 
General Information:
    The short circuit & earth fault indicator DJ-3100 is used for detecting the short circuit and earth fault of the electrical equipment. In order to avoid serious accident in distribution power networks,especially those in which a large number of ring main units are used, the upper level system must trip off within the setting time when a short circuit or earth-fault occurs in the lower level. This indicator is used to locate and indicate the fault section so that maintenance staff can locate and then cut off the fault section circuit quickly based on its signaling information. And then resume no fault section timely. It will reduce the working time and minimize the region of power cut.
Characteristic:
    1. With high reliability MCU, lower power consumption while monitoring;
    2. Passive sensor to be used;
    3. With long life of lithium battery for power supply ,has low voltage detect function
    4. Three phases independence testing
    5. Use optical fiber to transimit the short circuit signal and separate the sensor circuit from high voltage, so ensure the safety and reliability.
    6. With self-locking type output relay
Function:
    1. Short circuit alarming;
    2. Earthing alarming;
    3. Auto reset ;
    4. Test / Reset ;
    5. Alarming information remote transmission
    6. Low voltage of the battery alarming indication:

 

Technical data
Short circuit alarming current: 150A-1500A ±10%
Earthing alarming current: 10A、20A、30A、40A、50A、60A ±10%
Temperature range: -25~+55℃
Auto-reset time: 7s、1hrs、2hrs、4hrs
Humidty: ≤95%
Earth lead length 4m
Power supply lithium battery3.6V/2.45Ah
Conduct optical fiber length 10m(MAX.)
Protection class IP40
Main controller dimension 95×48×80mm
Sensor IP65
Output relay 120VAC 1A、30VDC 2A
Cutting hole size 91×44mm


 

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Tel: 86-592-6299685 Fax: 86-592-5716100 E-Mail: lzwgy@leelen.com
Add: 65# south Road Sunban, jimei Northem Zone, Xiamen, P.R.China P.C.: 361021