Short Circuit And Earth Fault Indicator Type EKL3B
Model Number: EKL3B
Brand Name: Chaobo
Type: Panel Type
Usage: Ring Main Unit, Cable Distribution Box, Switch Cabinet
IP Code: IP65(Fault Indicator Sensors) / IP55(Indicator Host)
Place of Origin: Zhejiang, China (Mainland)
Lead time for sample: Within 5 days
Short Circuit And Earth Fault Indicator Type EKL3B is used to detect short circuits and ground faults. In a ring network power distribution system, especially in a system that uses a large number of ring load switches, if a short circuit fault or a ground fault occurs in the next-level power distribution network system, the power supply system of the upper-level power must be disconnected within the specified time to prevent a major accident. By using this product, you can mark the part that has failed. The maintenance personnel can quickly find the faulty section according to the alarm signal of the indicator, and disconnect the faulty section, thereby timely recovering the power supply of the faultless section, which can save a lot of working time and reduce the power outage time and power outage range.
When the power supply line has a short circuit or a ground fault occurs, the electromagnetic field generated by the short circuit or the ground current changes, so that the measuring coil of the sensor fixed on the cable generates a pulse signal. When the value of the pulse signal reaches or exceeds the set fault current value When the fault indicator automatically remembers the fault status, the fault indicator flashes to indicate the fault, and the fault signal is transmitted to the monitoring center through the remote alarm interface. The staff can quickly and accurately find the fault location of the line through the fault indication signal, and eliminate it in time. Failure to restore power to the grid.
1. Short circuit fault alarm indication: Short-circuit fault sensor installed on single phase cable, monitoring the current changes of the power supply line in time, when the current change value reach or exceed short circuit current action when the alarm set point (this value can be setting according to user requirements before producing),the short circuit fault sensor emit alarm signal, the signal through optical fiber sent to the indicator host, the corresponding fault indicator light flashing, Send out alarm indicator.
2. Earth fault alarm indication: earth fault sensors installed on the bifurcation unshielded part of three-phase cable, detection of three-phase cable of zero sequence current value, when its value reach or exceed the earth current action when the alarm set point(this value can be setting according to user requirements before producing), the earth fault sensor emit alarm signal,the signal through optical fiber sent to the indicator host, the earth fault indicator light flashing, Send out alarm indicator.
3. Battery low battery alarm indication: When the indicator host internal battery voltage drops to 2.5 V, generate alarm signal,to mention maintenance personnel change the battery, the alarm signal lasts about two months. Furthermore it equipped with an external power supply interface,can use an external power source.(Type B terminal 12 "-", 9 "+"; Type A terminal 8 "+", 9 "-" AC/DC5V-10V).
4. Remote alarm and reset: After the short circuit or earth fault occurred, indicator sends the corresponding alarm signal at same time, cooperate with the distribution network automation (FTU) devices, and fault alarm signal can be transmitted to remote monitoring center, can also do remote manual reset operation.
5. Automatic reset: When the indicator emit alarm signals, In a set of automatic reset time, without manual reset, the indicator can be automatically reset.(Reset time: 4H.8H.12H.24H, open the host signs in the dial the code switch setting on its own)
6. Test and Reset: When the indicator emit alarm signals, press the indicator host "reset/test" button on the panel, can clear alarm status. In the normal state, hold down the indicator host "reset/test" button on the panel for 3 seconds, Panel on all the lights flashing 10 times.Type B also have relais working sound, this means the indicator is in normal working.
Main technical parameters:
Short Circuit Warning Current: 200-1500A Selectable (accuracy:±10%) Delay 20-300 ms when ordering can be selected by the user (The default factory Settings:800A. 20ms)
Earth Fault Warning Current: 5-50A Selectable (accuracy:±10%)Delay 20-300 ms when ordering can be selected by the user (The default factory Settings:20A. 20ms)
Short circuit sensor mounted cable diameter: outside diameter≤Φ40mm (other specifications shall be customized)
Earth fault sensor mounted cable diameter: outside diameter≤Φ120mm (other specifications shall be customized)
Working Ambient Temperature:-40℃-75℃
Relative Humidity: ≤95%RH Prevent Water, Acid and Salt fog
Working Power Supply: Lithium batteries or AC/DC（5V-10V）±15%
Remote Signal Contact Capacity: AC220V/1A
Remote Signal Contact Reset Method: Manual reset / Auto reset
Automatic Reset Time: 1-48H Selectable (accuracy:±5%) when ordering can be selected by the user (The default factory Settings:12H)
Indicator Host Boundary Dimension: 97×48×79mm
Indicator Host Installing Hole Size: 91.5mm x 43mm (tolerance:±0.3mm)
Sensor Optical Fiber Length: 3m (4 pieces) (other specifications shall be customized)
Suitable for medium voltage below 35KV rating system.
Indicator Host....................................1 piece
Short Circuit Fault Sensor..................3 pieces
Earth Fault Sensor..............................1 piece
Sensor Optical fiber............................4 pieces
Our products have already passed the test by CMA, CNAS,CE till now, and we also have ability to arrange other relevant testing and factory audit as your requirement.