H290L HD High Voltage Detector


The 290L HD detect high and extra high voltage in AC lines. Elongated insulation rods permit checking hightension circuits from a safe working distance. The handy telescopic rods make these detectors compact, lightweight, and easy to use.

  • Telescopic, compact, lightweight.
  • Self test button feature.
  • Easy to recognize indication.
  • High intensity red LED and intermittent audible alarm for easy recognition in full sunlight and noisy environments.
  • Water proof (detecting head impervious to water).


  • Withstand voltage (On insulating rod): 100kV / 300mm: 1 minutes.
  • Insulation resistance: 2000MΩ min by 1kV / DC megger at the same testing location as withstand voltage.
  • Leakage current: 100uA or less than 100uA at withstand voltage test.
  • Measuring voltage range: 6kV~81.5kV.
  • Operation start voltage (To ground): 2.7kV.
  • Display Light: Flashing red light.
  • Sound: Intermittent sound 50 dB apart 3 m.
  • Frequency: 50/60Hz.
  • Operating temperature: 0°C ~ 40°C.
  • Battery: 2 button-cells LR44(1.5V).
  • Overall length: Retracted 1370±50mm / Extracted 5600±50mm.
  • Weight (battery included): Approx. 1.25kg.
  • Safety standards: IEC / EN 61243-1.