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HOME > PRODUCTS > Short Circuit & Earth Fault Indicator |
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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:
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| Technical
data |
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| Short circuit alarming current:
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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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