Description
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.
Specifications
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.
Interface
USB.
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.
E.M.C.
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).
Dimension
13.6" x 10.7" x 6.3" (345 x 272 x 159 mm).
