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VLF-34 Portable high-voltage test System

The VLF-34 is designed for high-voltage testing of cross-linked polyethylene (XLPE) insulated cables with AC extra-low frequency (VLF) voltage.
Features
  • Advanced technology adopts digital frequency conversion technology, fully automatic microcomputer control, voltage boost, step-down, measurement, protection, etc.
  • Control part and High-voltage part adopt an integrated structure design, and only a high voltage wire and ground wire are needed to connect to the tested product without the intermediate connection wire.
  • Trolley-style design is convenient for transportation in various working environments, and its small size and light weight are very conducive to outdoor operations (80 kV).
  • Over-voltage protection and over-current protection. Action time is no longer than 10 ms.
  • The control unit and the booster are connected at low voltage, with photoelectric isolation control, safe and reliable to use.
  • Closed-loop negative feedback circuit is adopted. No capacity rising during outputting.
  • Capacitive touch screen, LCD graphic display, automatic storage, and printing.
  • 0.1Hz, 0.05Hz and 0.02Hz (0.01Hz - option) can be chosen, which ensures a wide test range.

Output voltage

34 kVpeak

Frequency range

    0.1 / 0.05 / 0.02 Hz    
(0.01 Hz - option)

Maximum capacitive load

1.1 μF @ 0.1 Hz
2.2
μF @ 0.05 Hz
5.5
μF @ 0,02 Hz

Accuracy

3 %

Voltage peak value error

≤ 3 %

Voltage waveform distortion        

≤ 5 %

Power supply

220 V ± 10 %

Frequency supply

50 Hz ± 5 %

Ambient temperature

-10 to +40

Relative humidity

85 %

Weight

30 kg


Standard accessories:

  • VLF-34
  • Compensation Capacitor
  • HV Connection Cable
  • Ground Cable
  • Power Cord
  • Fuse 20A
  • Print paper
  • Discharge Rod
  • User manual

Optional accessories:

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