Short Circuit and Earth Fault Detector EKL4B
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 Earth Fault Detector EKL4B
* 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
* Earth fault
indication by one super bright LED display
* Remote indication via
2 relay contacts
* Auxiliary power
supply: 24V-230V DC/AC or built-in Li-ion battery with low-power-status indication
* Reset/Test Button
* Remote reset
* Auto-reset: 7s/8h/12h/24h
reset time for options
Technical
Parameter of Short Circuit and Earth Fault Detector EKL4B
|
Model number
|
EKL4B
|
|
Voltage level
|
3kV-40.5kV
|
|
Ambient
|
Temperature
|
-25°C to +70°C
|
|
Humidity
|
≤95%
|
|
Threshold
currents for short circuit alarm
|
150A-2000A
|
|
Threshold
currents for grounding fault alarm
|
10A-100A
|
|
Alarm current
accuracy
|
±10%
|
|
Alarm response
time
|
Short circuit
fault
|
40ms
|
|
Grounding fault
|
40ms
|
|
Working current
|
Stand by
|
≤10uA
|
|
Indication alarm
|
≤0.5mA
|
|
Auto reset time
|
7s/8h/12h/24h
|
|
Auxiliary power
supply
|
Built-in battery
|
Li-ion
3.6v2.25Ah
|
|
External
|
24V-230V DC/AC
|
|
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
|
|
Indicator size
(WxHxD)
|
96X48x69mm
|
|
Sensor size
(WxHxD)
|
40x44x27mm
|
