HVT-70/50 is designed for high-voltage testing of solid dielectrics with low and medium electric capacitance (power cables, switchgear, busbars, insulators, etc.) with DC voltage up to 70 kV and high-voltage testing of other objects with AC voltage up to 50 kVRMS at industrial frequency (f = 50 Hz).

The system can be effectively used for both field and laboratory testing.


The system features both DC (rectified) and AC output voltage modes, which allows testing electrical equipment according to various standards using only HVT-70/50 system.

Output voltage mode is selected by a simple turn of a switch on the control unit - no additional equipment installation such as rectifier etc. is required.


The output voltage level and leakage current value are displayed on the easily readable and reliable pointer indicators.

In the AC output voltage mode, an additional measurement scale for the range from 0 to 1 mA allows recording the smallest current leakage.


The system comprises of two separate modules: the control unit and the high-voltage unit.

The test process is controlled from the control unit while an object under test is connected to the high-voltage unit.

Such two-module design allows an operator to remain at a safe distance away from the high-voltage circuit and the object under test.


The high-voltage unit is equipped with an automatic grounding device – an auxiliary protective solution for discharging an object under the test and the high-voltage circuit of the system.


Small weight, compact size and portable design of both units of the system enable rapid deployment, quick reconnection and operational comfort during the field testing.

The system can be supplemented with a convenient trolley for easy transportation.


The high-voltage unit contains a step-up transformer with oil insulation which works reliably under almost any conditions and does not require extra care or special maintenance.

* Pictures used herein are for illustration purposes only. *

DC testing Output voltage Adjustment and indication range 0 … 70 kV
Relative indication error ± 3 % of full range
Output current Maximum level 15 mA*
Indication ranges

■ 0 … 1 mA**

■ 0 … 15 mA

Relative indication error ± 3 % of full range
AC testing Output voltage Adjustment and indication range 0 … 50 kVRMS
Relative indication error ± 3 % of full range
Output current Maximum level 40 mARMS*
Indication range 0 … 45 mA
Relative indication error ± 3 % of full range
Load capacitance @ rated output voltage up to 1.6 nF
Safety Grounding

■ Protective earthing

■ Automatic grounding bar


■ Overvoltage

■ Overcurrent

High voltage switch off


■ Power keylock switch

Power supply and consumption Mains supply voltage 230 VAC, ± 10 % (110 Hz option)
Mains supply frequency 50 Hz (60 Hz option)
Power consumption up to 2.5 kV•A
Current consumption

up to 11 A @ 230 V

(up to 22 A @ 110 V)

Physical Control unit dimensions, H × W × D 265 × 349 × 240 mm
Control unit weight 13 kg
High-voltage unit dimensions, H × W × D 500 × 360 × 310 mm
High-voltage unit weight 35 kg

* If the output current exceeds 50 % of the maximum possible current output, do not operate the system in the continuous duty cycle for longer than 10 minutes; if the output current exceeds 75 % – 1 minute.

** The range is used for small leakage current monitoring only. Current indication error is not specified for this range.


* Products specifications are subject to change without notice. *

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