Cable End Fault Detection Relay

Cable Termination Fault Relay is designed to monitor medium- or high-voltage cable terminations and detect early-stage faults such as partial discharge, insulation degradation, or moisture ingress. Upon detection, the relay issues an alarm signal, allowing timely maintenance to prevent serious failures or system outages.

Features

Technical Specifications – Cable Termination Fault Alarm Relay


▶ Short-Circuit Fault Alarm Threshold:

  • Selectable range: 200–1500 A (Accuracy: ±10%)
  • Delay time: 20–300 ms
  • Default setting: 800 A, 20 ms

▶ Earth Fault Alarm Threshold:

  • Selectable range: 5–50 A (Accuracy: ±10%)
  • Delay time: 20–300 ms
  • Default setting: 20 A, 20 ms

▶ Sensor Installation Cable Diameter (Short-Circuit Detection):

  • Outer diameter ≤ Φ40 mm (other specifications customizable)

▶ Sensor Installation Cable Diameter (Earth Fault Detection):

  • Outer diameter ≤ Φ120 mm (other specifications customizable)

▶ Operating Ambient Temperature:

  • –40℃ to +75℃

▶ Relative Humidity:

  • ≤ 95% RH, resistant to water, acid, and salt mist

▶ Power Supply:

  • Lithium battery or AC/DC (5V–10V) ±15%

▶ Remote Signal Contact Load Capacity:

  • AC 220V / 1A

▶ Remote Contact Reset Method:

  • Manual reset / Automatic reset

▶ Auto Reset Time:

  • Selectable: 1–48 hours (Accuracy: ±5%)
  • Default setting: 12 hours

▶ Display Unit Dimensions:

  • 97 × 48 × 79 mm

▶ Display Unit Panel Cutout Dimensions:

  • 91.5 mm × 43 mm (Tolerance: ±0.3 mm)

▶ Fiber Optic Sensor Cable Length:

  • 3 meters (4 cores)
  • Other specifications customizable
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Specification

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