VLF-series
Portable High-voltage Test System

VLF-series
VLF-series
VLF-series

ADVANTAGES

  • High accuracy information about output current, voltage and waveform.
  • Advanced technology of digital frequency conversion, fully automatic control, voltage boost/step-down, measurement, protection, etc.
  • Integrated structure of control and high-voltage parts and only a high voltage and ground wires are need to be connected to the tested object.
  • Small size and light weight of trolley-style design is convenient for transportation in various working environments.
  • Over-voltage and over-current protections with action time less than 10 ms.
  • The control unit and the booster are connected at low voltage, with photoelectric isolation control for safe and reliable to use.
  • Closed-loop negative feedback circuit for prevention capacity rising during test.
  • Capacitive LCD touch screen, automatic result storage and printing.
  • Wide test frequency range: 0.1, 0.05 and 0.02 Hz (0.01 Hz – option).

Category:

Description

VLF-series is design for VLF testing of cables with XLPE insulations AC testing voltage up 34 kV (60 or 80 kV) peak with frequency 0.02, 0.05 or 0.1 Hz (0.01 Hz – option). This unit is a portable system in a single unit uses smart quick intelligent power testing system.

TECHNICAL SPECIFICATIONS:

Parameter VLF-34 VLF-60 VLF-80
Output voltage (peak) 34 kV 60 kV 80 kV
Type wave sine sine sine
Output frequency 0.1, 0.05, 0.02 Hz (0.01 Hz – option) 0.1, 0.05, 0.02 Hz (0.01 Hz – option) 0.1, 0.05, 0.02 Hz (0.01 Hz – option)
Output current 10 mA 10 mA 10 mA
Output voltage accuracy ± 3 % ± 3 % ± 3 %
Waveform distortion ± 5 % ± 5 % ± 5 %
Load carrying capacity 0.1 Hz ≤ 1.1 μF
0.05 Hz ≤ 2.2 μF
0.02 Hz ≤ 5.5 μF
0.01 Hz ≤ 7.0 μF		 0.1 Hz ≤ 1.1 μF
0.05 Hz ≤ 2.2 μF
0.02 Hz ≤ 5.5 μF
0.01 Hz ≤ 7.0 μF		 0.1 Hz ≤ 1.1 μF
0.05 Hz ≤ 2.2 μF
0.02 Hz ≤ 5.5 μF
0.01 Hz ≤ 7.0 μF
Power supply 220 V 220 V 220 V
Power frequency 50/60 Hz 50/60 Hz 50/60 Hz
Current consumption 20 A (peak),
15 A (average)		 20 A (peak),
15 A (average)		 20 A (peak),
15 A (average)
Power consumption 3 kW 3 kW 3 kW
Power fuse tube 8 A 10 A 20 A
Dimensions 400×280×660 mm 560×240×770 mm 560×240×770 mm
Weight 30 kg 55 kg 65 kg

 

 

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