Ground fault locator PDF1000

The PDF1000 DC System Earth Fault Detector is a portable instrument designed to locate and measure ground (earth) faults in DC systems across multiple voltage levels. It integrates a precision signal generator, a battery-powered signal receiver and clamp accessories to enable continuous ground-fault location and ground-resistance measurement without interrupting the DC system.

Key features

• Easy operation: power on to start; no complex button sequences required.
• Non-intrusive: locates faults without stopping floating chargers or other power sources.
• Multi-voltage support: compatible with 220 V, 110 V, 48 V and 24 V DC systems.
• Portable receiver: internal battery allows field use without external power.
• Continuous searching: can continuously search for the ground point during normal system operation.
• Strong interference immunity: compensates for system distributed capacitance.
• Intelligent charging management: reduces charging time and extends battery life.

Applications

• Power plants, substations, mines, chemical plants and other DC power-supply departments.

Technical specifications

• Signal generator
  • Output signal frequency: 2.5 Hz
  • No-load output voltage: ±20 V ±5%
  • Signal voltage amplitude error: <5%
  • Signal short-circuit output current: ≤ 80 mA
  • Output port impact resistance: 400 V DC
  • Power supply voltage: AC 220 V ±10%
  • Voltage frequency: 50 Hz ±5%
  • Input fuse: 200 mA
  • Maximum power: 3 W
  • Dimensions (signal generator): 300 × 270 × 200 mm
• Signal receiver
  • Signal current detection sensitivity: 0.5 mA
  • Signal generator impedance: 40 KΩ
  • Maximum output current: 2.5 mA
  • Receiver display: digits 0 ~ 19
  • Dimensions (receiver): 210 × 100 × 32 mm
  • Clamp A (size): Φ 50 mm
  • Clamp B (size): Φ 7 mm × 9 mm
• Complete set
  • Maximum detectable ground resistance: 300 kΩ
  • Ground resistance measurement accuracy: 0 ~ 4.5 kΩ, error ≤ 0.5 kΩ; 4.5 kΩ ~ 300 kΩ, error ≤ 10%
• Dimensions & weight
  • Mainframe dimensions: 340 × 290 × 140 mm
  • Mainframe weight: 3.96 kg
  • Accessory/case dimensions: 390 × 290 × 140 mm
  • Accessory weight: 2.8 kg
• Alternative names
  • ground fault detector
  • ground fault locator
  • earth fault detector
  • DC system earth fault detector