The EKL-4DXN Line Fault Indicator with Live Status is an online monitoring device developed by Comewill specifically for high-voltage switchgear and distribution networks below 20kV. This device integrates fault detection, live indication, and phase verification functions. Utilizing a modular design and fiber optic communication technology, it can operate stably in complex electromagnetic environments, providing reliable support for daily inspections and fault diagnosis in power systems.
Short Circuit Fault Alarm
When a short circuit occurs in the line, the short-circuit sensor built into the EKL-4DXN Line Fault Indicator with Live Status immediately captures the fault current and transmits the alarm signal to the host computer via fiber optic cable. Fiber optic communication has strong anti-interference capabilities, avoiding the influence of electromagnetic noise inside the switchgear on signal transmission. Upon receiving the signal, the host computer triggers the corresponding short-circuit fault indicator light, helping on-site personnel quickly locate the faulty circuit.
Ground Fault Alarm
The grounding sensor continuously monitors the zero-sequence current of the line. When the ground fault current reaches or exceeds the preset alarm threshold, the sensor sends a signal to the main unit via optical fiber, and the main unit immediately activates the ground fault alarm. This function helps to detect ground faults early, prevents further degradation of equipment insulation, and reduces the risk of electric shock.
High Voltage Live Status Indicator: The Quality EKL-4DXN Line Fault Indicator with Live Status continuously monitors the live status of high-voltage lines. The main unit panel is equipped with high-brightness LED indicators, corresponding to the L1, L2, and L3 phases respectively. The flashing frequency of the indicators roughly reflects the voltage level. The LEDs are powered directly from the high-voltage electric field, without consuming the main unit's built-in battery. This design ensures the continuity of live status indication and extends the overall battery life.
High Voltage Phase Verification: The main unit panel has a dedicated phase verification interface. Maintenance personnel can use this interface to test and confirm the accuracy of the high-voltage live input signal and fault indication. Using this function to verify the phase before performing line connection or maintenance work helps avoid equipment failures caused by phase errors.
To adapt to different work rhythms at various sites, the EKL-4DXN offers three reset modes:
Automatic Reset: After the fault is cleared, the device can automatically reset at a preset time. Optional reset intervals include 8 seconds, 12 hours, 24 hours, and 48 hours (factory default is 12 hours). This mode is suitable for unattended or remote sites, reducing the frequency of on-site resets by maintenance personnel.
Manual Reset: After the fault is resolved, on-site personnel can directly press the "Reset/Test" button on the EKL-4DXN Line Fault Indicator with Live Status panel to immediately clear the alarm status, ensuring that the device indication is consistent with the current line status.
Remote Reset: The device supports sending alarm signals to the control center and can also receive remote reset commands from the control center. For large distribution networks with numerous remote devices, this function helps dispatchers remotely manage device status, reducing unnecessary on-site visits.
Automatic Test Function: To ensure the equipment is in normal working condition, the user can press the "Reset/Test" button on the main unit panel. At this time, the L1, L2, L3, and L4 indicator lights will flash nine times and then automatically reset. The test can also be manually terminated by pressing the button again. This simple self-test process helps personnel quickly confirm that the indicator functions are normal before operation, eliminating the need to carry additional testing instruments.
Low Voltage Alarm:
The EKL-4DXN Line Fault Indicator with Live Status is powered by a built-in lithium battery. When the battery voltage is lower than the normal operating range, the device will trigger a low voltage alarm, prompting the user to replace the battery in time. This function helps prevent the device from failing to accurately display fault information due to battery depletion, thus maintaining the continuous reliability of the equipment.
As a professional manufacturer, Comewill allows users to adjust multiple alarm parameters according to actual operating conditions. Whether it's the short-circuit current threshold, ground current threshold, or automatic reset time, all can be set on-site, enabling the equipment to adapt to different line conditions and operating requirements.
| Short circuit alarm | 50~1000A(factory adjustable)Error±5%,factory output:600A |
| Short circuit overcurrent response time | 0.03-5S(factory adjustable),factory:0.25 |
| Grounding alarm | 10-100A(factory adjustable)Error±10%,factory output:20A |
| Ground overcurrent response time | 0.03S~55(factory adjustable),factory:0.25 |
| Over temperature alarm | 20~80℃(factory adjustable)Error±1℃,ex factory:80℃ |
| Dry contact capacityfor over temperature tripping | 230V/AC-0.1A,30V/DC-1A |
| Short circuit grounding remote relay | 230V/AC-0.1A,30V/DC-1A |
| Over temperature alarm | Relay outputs 3 cycles (2 seconds each)Set to 750mS,reset to 1250mS) |
| Automatic reset time | 75~45h (factory adjustable),factory time:8h |
| Standby current | ≤5μA |
| Voltage level | Below 20KV |
| Ability to withstand current | 31.5KA/4S |
| Static power consumption | ≤10μw |
| Action count | ≥4000 times |
| Battery capacity | 3.6 Lithium battery 2Ah |
| Reminder protection level | Host IP40,sensor Ip65 |
| work environment | -25℃~+75℃ |
| ≤95%RH(without condensation) | |
| ≤1000 meters |
Address
No.777 Wanweng Road, Wengyang Sub-district, Yueqing City, Wenzhou City, Zhejiang Province, China
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