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
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Model number
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EKL7
|
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Voltage level
|
3kV-40.5kV
|
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Ambient
|
temperature
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-25°C to +70°C
|
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humidity
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≤95%
|
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Threshold currents for short circuit alarm
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can be set or be adjustable at the options of 400A,600A, 800A and 1000A.
|
|
Alarm response time for short circuit
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40ms, 60ms, 80ms, 100ms (optional)
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Threshold currents for grounding fault alarm
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20A, 40A, 60A, 80A(optional)
|
|
Alarm response time for earth fault
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80ms,120ms,160ms,200ms(optional)
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Alarm current accuracy
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±10%
|
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Reset
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auto reset
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1h, 2h, 4h, 8h
|
|
manual reset
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by "RESET" button
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|
remote reset
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AC/DC 12-60V or AC/DC 110-230V
|
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Auxiliary power supply
|
built-in battery
|
Li-ion 3.6v2.25Ah
|
|
external
|
24V-230V DC/AC
|
|
Working current
|
stand by
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≤5uA
|
|
indication alarm
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≤0.8mA
|
|
Capacity of relay contact
|
2A 30VDC/1A 125VAC
|
|
Applicable conductor diameter
|
short circuit sensor
|
type A
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Φ20mm~Φ40mm
|
|
type B
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Φ30mm~Φ50mm
|
|
type C
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Φ50mm~Φ70mm
|
|
grounding sensor
|
type A
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Φ60mm~Φ100mm
|
|
type C
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Φ80mm~Φ130mm
|
|
Protection class
|
indicator
|
IP40
|
|
sensor
|
IP65
|
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Fiber cable length for short circuit sensor
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1.5m can be customized
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Fiber cable length for grounding sensor
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2.5m can be customized
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Panel window size (WxH)
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92x45mm
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Iindicator size (WxHxD)
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96X48x69mm
|
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Sensor size (WxHxD)
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40x44x27mm
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