Short Circuit and Earth Fault Indicator Tester
This device tests and indicates short circuits and earth faults in electrical systems. It is designed for accurate fault detection and indication, ensuring the safety and reliability of electrical installations.
Technical Specifications
Overview
Real-Time Fault Monitoring
This short circuit and earth fault indicator system is designed for installation in RMUs, cable branch boxes, and substations within electricity distribution networks. It provides real-time monitoring of short circuits and single-phase ground faults, enabling rapid identification of faulty cable sections to minimize downtime. The system enhances operational efficiency, accelerates power restoration, and improves overall service reliability for electrical infrastructure.
Technical Parameters
Key Operating Limits
150 A
Min Short Circuit Alarm
5 A
Min Earth Fault Alarm
20 kV
Max System Voltage
Short Circuit Detection
| Parameter | Value |
|---|---|
| Alarm Current Range | ≥150A (continuously adjustable) |
| Factory Setting | 1200A |
| Time Delay | 20-300mS (factory 60mS) |
| Sensor Withstand Current | 20kA / 4S |
Earth Fault Detection
| Parameter | Value |
|---|---|
| Alarm Current Range | 5A-400A (continuously adjustable) |
| Factory Setting | 10A |
| Time Delay | 20-300mS (factory 200mS) |
Power & Environment
Power & Battery
- Battery Type: ER14505 Lithium 3.6V/1.9Ah
- Battery Life: Up to 8 years
- Standby Current: ≤5μA
- Low Battery Alert: ≥60 days of warning
Environmental Conditions
- Operating Temperature: -40°C to +75°C
- Relative Humidity: ≤95%
- Mainframe Protection: IP40
- Sensor Protection: IP65
Features
- Functional Capabilities
- Automatic ResetManual ResetRemote Alarm OutputSelf-Test FunctionLow Battery AlertRemote Reset
- Relay Output
- 30VDC/2A; 230VAC/1A
