HVTS-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 HVTS-70/50 system.

Output voltage mode is selected by pressing a button on the control unit - no additional equipment installation such as rectifier etc. is required.


The system allows to carry out tests in both fully automatic and manual control modes.

In the manual mode, the output voltage level and ramp up rate are controlled by the operator via a rotary encoder.

In the automatic mode, the test voltage is automatically increased at pre-defined ramp up rate and is held on the required level before being reduced to zero upon completion of the test cycle.

Switching between control modes is done by simple push of a button.


HVTS-70/50 systems feature a digital graphic display indicating all the test settings and operating parameters.

A graphical menu provides such advantages as multilingual user interface, test reports viewing, saving test pre-sets, etc.


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.


Detailed results of each test are saved in the non-volatile memory of the system.

Test reports can be viewed from the control unit’s display.


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 parameters Voltage Output level up to 70 kV
Measurement error ± [3 % + 2 dgt*]
Current Output level up to 15 mA**
Measurement error ± [3 % + 2 dgt]
AC testing parameters Voltage Output level up to 50 kVRMS
Measurement error ± [3 % + 2 dgt]
Current Output level up to 40 mARMS**
Measurement error ± [3 % + 2 dgt]
Load capacitance @ rated output voltage up to 1.6 nF
System parameters Test modes • Manual
• Auto
Voltage ramp rate 0.5 … 4.0 kV/s, step 0.5 kV/s
Internal memory 32 test reports
Custom timer pre-set range 0:10 … 59:59 min
Interface Monochrome graphical display 128×64 px
Interface languages • RU, EN
• TR, PL, FR, etc. (option)
Safety Protection • Over-voltage tripping
• Over-current tripping
• Automatic grounding bar
Power supply and consumption Supply voltage 230 V ± 10 %, AC (110 V option)
Supply frequency 50 Hz (60 Hz option)
Power consumption up to 2.5 kVA
Current consumption up to 11 A - 230 V
(up to 22 A - 110 V)
Physical CU dimensions, H×W×D 265×349×240 mm
CU weight 13 kg
HVU dimensions, H×W×D 500×360×310 mm
HVU weight 35 kg

* The measurement error of a digital tester is specified by the expression: ± [xx % + xx dgt], where the first part identifies a percentage error relative to the reading. The second part is an error in digits that indicates the counts on the least significant digit of the digital display (the lowest digit in a number, located at the far right of a string). The error in digits is constant regardless of the input and is typically used to represent an error factor of a digital tester.

** If the output current exceeds 50 % of the total 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.

* Products specifications are subject to change without notice. *

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