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Fault Passage Indicator

EKL7 Short Circuit and Ground Fault Passage Indicator indicates high voltage power line short circuit fault by detecting the 3 single-phase line-currents and short circuit currents, and the grounding fault by detecting the zero sequence currents. With visual or audible indicators, it helps line patrol staff to fast find out the location where there is a short circuit or grounding fault on the 3kV-40.5kV power distribution networks, switchgears or cable branching units etc.

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    EKL7
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Short Circuit and Ground Fault Passage Indicator EKL

 

Short circuit fault alarm indication

 

Short-circuit fault sensors installed on 3 single phase cables, monitoring the current changes of the power supply lines, when the current change value reach or exceed Threshold currents for short circuit alarm (this value can be set as per user requirement),the short circuit fault sensors output alarm signal, through optical fiber the signal will be sent to the indicator host, the corresponding fault indicator light will flash to alarm the short circuit fault.



Earth fault alarm indication

 

Earth fault sensor installed on the bifurcation unshielded part of three-phase cable, detecting the zero sequence current value of the three-phase cable, when its value reach or exceed Threshold currents for grounding fault alarm (this value can be set as per user requirement), the earth fault sensor outputs alarm signal through optical fiber, which will be sent to the indicator host, and the earth fault indicator light will flash to alarm the earth fault.



Features of Short Circuit and Ground Fault Passage Indicator EKL7

 

* Short-circuit and earth fault detection with 3 single-phase current sensors, and one grounding current sensor

* Short-circuit indication (3 single phase L1,L2,L3) by three super bright LEDs respectively

* Threshold current for short circuit alarm can be set at the options of 400A, 600A, 800A ,1000A and it also can be automatically adjustable according to the load current

* Alarm response time for short circuit can be set at the options of 40ms, 60ms, 80ms and 100ms

* Earth fault indication by one super bright LED display

* Threshold current for earth fault can be set at the options of 20A, 40A, 60A and 80A

* Alarm response time for earth fault can be set at the options of 80ms, 120ms, 160ms and 200ms

* Remote indication via 2 relay contacts

* Auxiliary power supply: 24V-230V DC/AC or built-in Li-ion battery with low-power-status indication

* Self check

* Reset/Test Button

* Remote reset

* Reset: auto-reset: 1h/2h/4h/8h reset time for options or manual reset by “RESET” button


Technical Parameter of Short Circuit and Ground Fault Passage Indicator EKL7


Model number

EKL7

Voltage level

3kV-40.5kV

Ambient

temperature

 -25°C to +70°C

humidity

95%

Threshold currents for short circuit alarm

can be set or be adjustable at the options of 400A,600A, 800A and 1000A.

Alarm response time for short circuit

40ms, 60ms, 80ms, 100ms (optional)

Threshold currents for grounding fault alarm

20A, 40A, 60A, 80A(optional)

Alarm response time for earth fault

80ms,120ms,160ms,200ms(optional)

Alarm current accuracy

±10%

Reset

auto reset

1h, 2h, 4h, 8h

manual reset

by "RESET" button

remote reset

AC/DC 12-60V or AC/DC 110-230V

Auxiliary power supply

built-in battery

Li-ion 3.6v2.25Ah

external

24V-230V DC/AC

Working current

stand by

≤5uA

indication alarm

≤0.8mA

Capacity of relay contact 

2A 30VDC/1A 125VAC

Applicable conductor diameter

short circuit sensor

type A

Φ20mm~Φ40mm

type B

Φ30mm~Φ50mm

type C

Φ50mm~Φ70mm

grounding sensor

type A

Φ60mm~Φ100mm

type C

Φ80mm~Φ130mm

Protection class

indicator

IP40

sensor

IP65

Fiber cable length for short circuit sensor

 1.5m can be customized

Fiber cable length for grounding sensor

 2.5m can be customized

Panel window size (WxH)

92x45mm

Iindicator size (WxHxD)

96X48x69mm

Sensor size (WxHxD)

40x44x27mm


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Xiamen Andaxing Electric Group Co.,Ltd TEL:86-592-3102888 or 3170079 FAX:86-592-3170008 Email : ade@cnade.net ADD:58th, Siming Park, Tong’an Industrial Zone, Xiamen, China. Zip Code : 361100 Websites : www.andaxingelectric.com  www.andaxing.net   www.cnade.net
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