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Real-Time Detection SC Ground Fault Indicator for Distribution Networks

The LY-EKL4 Panel Type Ground Short Circuit Fault Indicator is designed to detect and monitor fault conditions in high-voltage power distribution systems. It utilizes a ground current sensor to detect grounding faults and a short-circuit current sensor to identify short-circuit faults in cables. This device offers real-time fault indication and automatic reset, significantly improving the efficiency of fault diagnosis and reducing system downtime. With adjustable alarm settings, the LY-EKL4 ensures accurate, quick fault detection, enhancing operational safety in various types of ring network switch cabinets and electrical distribution systems.

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SC Ground Fault Indicator SC Ground Fault Indicator for Distribution Networks Real-Time Detection SC Ground Fault Indicator Fault Indicator

Product Advantages

Technical Parameters

Product Uses

FAQs

Product Overview

The Real-Time SC Ground Fault Indicator for Distribution Networks is a high-precision monitoring solution designed to detect and locate short circuit (SC) and ground faults in medium-voltage distribution networks. Built with multi-sensor architecture and fiber-optic communication, this system ensures instantaneous fault identification and remote diagnostics, enabling utilities to minimize downtime and enhance grid reliability. The device operates across a wide range of wire diameters (25mm² to 400mm²) and withstands extreme environmental conditions, making it suitable for urban, rural, and industrial applications .

Short-circuit Ground Fault Indicator

Product Features

1. Ultra-Fast Fault Detection

With an action response time of 0.06s to 3s, the system quickly identifies abnormal current patterns, ensuring rapid isolation of faulted sections. This reduces service interruption duration and improves overall grid resilience .

2. Low Power Consumption

The indicator maintains a standby current ≤5μA, making it energy-efficient for long-term deployment. Its self-powered design eliminates the need for external power sources, reducing installation complexity and costs .

3. Rugged Environmental Performance

Rated for ambient temperatures from -10℃ to +55℃, the device is engineered to operate reliably in harsh conditions, including high humidity, dust, and extreme weather. Its IP68W-compliant sensors (equivalent to IP68 for water and dust ingress) ensure durability in outdoor and submerged environments .

4. Adjustable Fault Thresholds

Ground Fault Start Value: 20A or 50A (user-selectable)

Short Circuit Fault Start Value: 150A to 1500A (±10% tolerance)

Factory Setting: 800A/1000A (adjustable via software)

These parameters allow customization for different network configurations, ensuring accurate fault detection without false triggers .

5. Multi-Sensor Architecture

The system includes:

3 short-circuit sensors for phase-to-phase fault detection

1 ground sensor for earth fault monitoring

4 optical fibers for interference-free data transmission

This design enables comprehensive grid surveillance and precise fault localization in radial or open-ring networks .

6. Long Operational Lifespan

With >4000 action cycles, the indicator ensures low maintenance and high durability, reducing replacement costs over its lifecycle .

Parameter

Specification

Voltage Range

6KV–35KV

Maximum Short-Circuit Current

20KA for 3 seconds

Applicable Wire Current

≤1000A

Wire Diameter

25mm² to 400mm²

Action Response Time

0.06s ≤ T ≤ 3s

Standby Current

≤5μA

Ambient Temperature

-10°C to +55°C

Action Times

>4000 times

Ground Fault Start Value

20A/50A

Short Circuit Fault Start Value

150A–1500A (Optional

±10%)

Factory Setting

800A/1000A (adjustable)

Dimensions (Opening Size)

91.5mm x 43.5mm

System Composition

Host

3 short-circuit sensors

1 ground sensor

4 optical fibers

1. Distribution Grids

Medium-voltage networks (10kV to 36kV)

Radial and open-ring configurations

Overhead lines and underground cables

The device effectively identifies faults in both solidly grounded and low-resistive grounded systems, supporting utilities in maintaining uninterrupted power supply .

2. Industrial Facilities

Manufacturing plants

Mining operations

Oil and gas installations

Its high-temperature tolerance and anti-interference capability make it ideal for environments with heavy machinery and electromagnetic noise .

3. Smart Grid Integration

SCADA systems

Feeder automation

Fault location and isolation (FLISR)

By integrating with real-time monitoring platforms, the indicator facilitates predictive maintenance and self-healing grid operations, aligning with smart grid objectives .

4. Renewable Energy Grids

Wind farms

Solar parks

Energy storage systems

The device helps monitor intermittent faults in renewable networks, ensuring stable integration with the main grid .

Q1: How does the system differentiate between transient and permanent faults?

A: The indicator uses time-muting logic to suppress false triggers from inrush currents (e.g., during motor startup or capacitor switching). It only confirms a fault if the current exceeds the threshold for a predefined duration, ensuring high accuracy .

Q2: Can the device be retrofitted into existing infrastructure?

A: Yes. The split-core sensors allow non-invasive installation on energized lines without disconnecting the cable. This reduces downtime and simplifies upgrades for legacy grids .

Q3: What communication protocols does it support?

A: The system supports IEC 61850, DNP3, and Modbus for seamless integration with utility management systems. Fiber-optic links ensure secure, high-speed data transmission over long distances .

Q4: How is the device calibrated?

A: Calibration is performed at the factory using traceable standards, and field adjustments can be made via software tools. Regular recalibration is recommended every 5 years or after extreme environmental exposure .

Q5: What is the expected lifespan of the sensors?

A: The sensors are designed for 20+ years of outdoor operation, with minimal degradation in performance. Replaceable components (e.g., batteries) extend their operational life .