Description

EKL4 Short Circuit& Earth Fault Indicator

The EKL-4 Earth Fault Indicator for MV Power Distribution Network is used in 6~35KV Cable line power distribution networks, usually installed in Ring Main Unit, Cable Distribution Box, Switch Cabinet, enable the electricity distribution network engineers to quickly identify the faulty section of network and restore power supplies to customers on healthy sections in the shortest time possible. 

Functions

1, Short circuit fault alarm indication: The short circuit fault sensor sense the line current of the power systems

normally. When the line short fault occur, and the short fault current is over the setting alarm current value, the sensor

send alarm signal over the fiber line, the panel body receive the alarm signal and give the corresponding indication, for

example the short circuit fault indicator light flash and the dry contacts give the output.

2, Earth fault alarm indication: The earth fault sensor sense the zero sequence current of the power systems. When the

earth fault occur, and the zero sequence current is over the setting alarm current value, the sensor send alarm signal

over the fiber line, the panel body receive the earth fault alarm signal and give the corresponding indication, for

example the earth fault indicator light flash and the dry contacts give the ourput.

3, Automatically reset: When the indicator alarm, the alarm signal will reset of itself in setting reset time.

4, Manually reset: When the indicator alarm, the alarm signal will be reset by press the Test/Reset button on the Panel。

5, Automation: When the indicator alarm, the alarm signal can be translated to the remote monitor centerl.

6, Test: The indicator will test it self to judge if it’s ok by press the Test/Reset button on the Panel.

Technical Specifications:

Ambient Temperature:-35℃——+75℃

Relative humidity:≤85%

Pollution class:JP40

Protection class:IP65

Automatic reset time: 4.8.12.24H

Line voltage grade:＜35kV

Static power loss:＜5uA

Battery capacity:3.6V2Ah

Relay capacity:230VAC 2A

Short circuit warning current:≥300A

Earth fault warning current:≥10A

Accuracy: ＜±10%

Action delay time:20-300ms

Short circuit withstand current: ≥20kA 2S

Applicable line diameter:≤40mm

Weight of whole set:＜1000g

Installing hole size:92*44mm

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