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Sponsored Article

New truly portable high voltage VLF (very low frequency) test system for 11kV cables from the world’s market leaders in VLF.

The new HVA28 and HVA28 TD are the latest additions the b2 High Voltage’s range
of portable dry type high voltage very low frequency test systems. (b2 High – Voltage
is a division of b2 electronic GmbH of Austria).


The HVA28 is a dry type test system (it has no oil filled components) capable of
producing 0 - 28kV peak pure sine wave (20kV RMS), ± 28kV DC or 28kV peak
square wave.

The output frequency is adjustable from 0.1 to 0.01Hz. This enables the system to
test 0.5µF at 20kV at 0.1 Hz, and up to 5µ 0.01Hz at 20kV.

Because of the totally dry type construction the HVA28 weights only 14kg and with
dimensions 430 x 240 x 340 mm the unit can be easily carried and transported to
site. The unit is protected by a watertight, crushproof and dust proof case to IP67.
The unit is able to operate over a temperature range from -5°C to +45°C with a
storage temperature range of -25°C to +70°C.

The system is controlled from a large full colour LCD display and can be
programmed to suit almost any customer specific routine. The LCD display also
provides for measurement of output voltage and current as well as load capacitance,
insulation resistance, test time, all together with a unique oscilloscope feature that
displays HV output waveform and so any point of breakdown on the waveform during

For communications the unit is fitted with a USB port and Bluetooth as standard. The
test systems results can be analysed using the HVA Control Centre Software.
The HVA28TD has integrated Tan Delta (TD) measurement diagnostics.
Each test system is supplied with a 5m output cable, clear silicon rubber earth cable,
30kV discharge / earthing stick and a full operating manual.
Both models are housed in waterproof, crushproof and dust proof case to IP67. In
addition the units feature a DDD system (Dual Discharge Device) which a an
electronic and mechanical means of discharging the capacitive test load.

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