MD5KVR brand

5 kV digital insulation tester

  • Insulation resistances up to 5 TΩ
  • Remote control through an Android app
  • Automated tests: absorption index, polarization index, capacitance, leakage current
  • Step voltage test
  • Dielectric discharge test
  • Ramp test
  • AC/DC voltmeter
  • Real time clock and calendar
  • Built-in printer
  • 16,000 readings memory
  • USB interface
  • Software for data management
  • Rechargeable LFP battery


The digital insulation tester model MD5KVR is TENTECH’s cutting edge insulation analyzer equipment and it is one of  the most complete and sophisticated available in the international market. Its proven technology provides safe, reliable and accurate measurements of insulation resistances up to 5 TΩ, with 4 preselected test voltages, 500 V - 1 kV - 2.5 kV - 5 kV. Other test voltages may be selected in steps of 25 V or 500 V.

A state-of-the-art microprocessor controls the equipment operation and enables the incorporation of advanced features which make measurements easier: auto-range selection, AC/DC voltmeter, automatic measurement of absorption index, polarization index, leakage current and capacitance, timer enabling programming of test duration, configurable pass-fail test, ramp test, step voltage test, dielectric discharge, built-in printer, real time clock and calendar.

Measured values are transmitted through the USB interface and are printed in the built-in printer as a registration of the performed test. Furthermore, the measured values are stored in a non-volatile internal memory. Up to 16,000 measured values may be stored to be transferred afterward to a computer running the T-Logger program. This software allows a further analysis of the test results, including a graphical representation and automatic report generation. The real time clock and calendar, and the sequential test number, facilitates the identification of each test, and the organization of a predictive maintenance system by trend analysis.

The MD5KVR is powered by a rechargeable LFP battery. The cabinet is strong and lightweight, easy to carry, impact-resistant and suitable to be used under severe weather conditions. Thus the megohmmeter supplies very reliable and accurate measurements both in laboratory and out in the field.


Test voltage

500 V, 1 kV, 2.5 kV, 5 kV directly, one button selectable.
50 V to 5 kV in 25 V or 500 V steps. DC, negative.

Maximum resistance reading

5 TΩ @ 5 kV.
250 GΩ @ 250 V.

DC voltmeter

15 V up to 1,000 Vdc.
Accuracy: ± (5 % of reading + 3 digits).

AC voltmeter

15 V up to 1,000 Vrms.
Accuracy: ± (5 % of reading + 3 digits).

Overvoltage category

CAT III - 600 V.

Leakage current measurement

1 nA up to 3,000 μA
Accuracy: ± (10 % of reading + 3 digits).

Capacitance measurement

50 nF up to 10 µF @ 500 V.
50 nF up to 5 µF @ 1,000 V.
30 nF up to 2 µF @ 2,500 V.
30 nF up to 1 µF @ 5,000 V.
Accuracy: ±10% of reading ± 3 digits.

Short circuit current

Max. 3 mA.

Test voltage accuracy

± 3 % of nominal test voltages on 10 GΩ.

Insulation tester basic accuracy

± 5% of reading from 1 MΩ to 1 TΩ @ 5 kV.
± 20% of reading from 1 TΩ to 5 TΩ @ 5 kV.
(for lower test voltages, the upper limit will be reduced proportionally)
± 20% of reading ± 5 digits from 10 kΩ to 100 kΩ.
± 10% of reading ± 5 digits from 100 kΩ to 1 MΩ.

Advanced features

• Dielectric discharge
• Ramp test
• Automated polarization index calculation
• Automated dielectric absorption ratio calculation
• Programmable pass-fail test
• Step voltage test
• 16,000 readings memory
• Switchable filter to remove external noise interference

Built-in printer

Prints elapsed time, actual voltage and resistance measured each 15 seconds.



Built-in chronometer

Shows elapsed time in mm:ss format. Count starts automatically for each measurement.

T-Logger Software

Friendly, easy to use software. Tests are represented in graphic and tabular views. With automatic report generator, including the operator's commentaries.

Environmental protection

IP65 (with closed lid).

Safety Class

In accordance with IEC 61010-1.


In accordance with IEC 61326-1.

Electromagnetic irradiation immunity

In accordance with IEC 61000-4-3.

Electrostatic immunity

In accordance with IEC 61000-4-2.

Power supply

Internal rechargeable (LiFePO4 12 V - 6,000 mAh).

Battery charger

12 V - 2 A.

Operating temperature range

14 °F to 122 °F (-10 °C to 50 °C).

Storage temperature range

-13 °F to 158 °F (-25 °C to 70 °C).

Humidity range

95% RH (non condensing).

Equipment weight

Approx. 9.48 lb (4.3 kg).


13.6" x 10.7" x 6.3" (345 x 272 x 159 mm).

Included accessories

2 Measuring test leads.
1 GUARD test lead.
1 AC Adapter.
1 T-Logger software (CD-ROM).
1 User guide.
1 Protective bag.
1 USB cable.

Remote control by Android device

This instrument has Bluetooth® interface and can be controlled remotely via an Android™ smartphone / tablet running the TENTECH's remote control application.

Google Play Logo

Go to Google Play Store

• Android™ and Google Play™ Store are trademarks of Google, Inc.
• Bluetooth® is a registered trademark of Bluetooth SIG, Inc. worldwide.

Rechargeable battery (LiFePO4)

Expected lifetime
2,000 charge / discharge cycles (average).

Low self-discharge
When the equipment is not in use, battery charge decreases with time at a much lower rate than other battery technologies.

In contrast to other lithium battery technologies commonly used, LFP batteries are thermally and chemically stable, significantly improving battery safety.
Company history
13 Years


Customer service
Phone: +1 305 938 0389

Phone: +1 305 938 0389