Description
The TENTECH MD5060B is a smart, 5 kV insulation tester and analyzer. Besides the conventional measurement of insulation resistances up to 5 TΩ, its advanced features allow to automatically measure both the Polarization Index and Dielectric Absorption Index, thus significantly simplifying testing of transformers. This insulation tester is a portable, rechargeable battery-powered equipment. Test voltage may be chosen from 250 V to 5 kV in 100 V increments. Due to its measurement principle (actual voltage and current readings) the accuracy of resistance measurement is not affected by any test voltage error. Nevertheless, the high-voltage generator is electronically stabilized with a better than 3% accuracy in open-circuit condition and for any normal operation battery condition.
The built-in chronometer automatically counts the elapsed time since the start of measurement. 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 4000 measured values may be stored, to be transferred afterward to a computer running the TLogger program. This advanced software allows a further analysis of the test results, including a graphical representation and automatic report generation.
Some other advanced features are useful to run the most sophisticated insulation analysis. Step voltage test, 200 mA continuity range, low resistance measurement, configurable pass-fail and timed measurements are automatically performed. The measurement parameters are stored in the non-volatile memory for an easy configuration.
In order to guarantee the operator safety, the cabinet is made of a high breakdown strength plastic. High security output terminals are placed in the furthest and most protected area of the equipment. A light indicator shows high-voltage presence and is switched-off when the capacitances (both internal and external) are discharged up to reaching a safe value. This instrument provides excellent performance both in laboratory and field works, under hard environment conditions.
Specifications
Test voltages
500, 1000, 2500, 5000 V directly, one button selectable.
250 V to 5 kV in 100 V or 500 V increments.
DC, negative.
Test voltages accuracy
± 3% of nominal test voltages on R ≥ 10 GΩ.
Maximum resistance reading
5 TΩ @ 5 kV.
Megohmmeter basic accuracy
± 5% of reading from 1 MΩ up to 1 TΩ.
± 20% of reading from 1 TΩ up to 5 TΩ.
Short circuit current
1.5 ± 0.5 mA.
Low resistance measurement and Continuity tester
Range: 0.1 Ω to 20 kΩ
Accuracy: 3% of reading ± 2 digits
Test current: up to 200 mA
Continuity sound indicator: activates at R < 5 Ω ± 0.5 Ω
Measurement modes
Manual, Timed, "Pass / Fail", Step voltage test, Polarization index, Dielectric absorption index, Low resistance and Continuity tester
Filter function
Minimizes interference in resistance measurements
Chronometer
Shows elapsed time in mm:ss format. Count starts automatically for each measurement.
Display
Alphanumerical LCD display, 4 lines / 20 characters (Big Number)
Printer
Built-in thermal printer
Internal memory
For up to 4000 measured values
Communication
USB
Software desktop (PC/Notebook)
TLogger software: to download the data stored in the equipment's memory, analyze them and generate test reports
Safety class
IEC 61010-1
Overvoltage protection
CAT III - 600 V
EMC
IEC 61326-1
Electromagnetic irradiation immunity
IEC 61000-4-3
Electrostatic immunity
IEC 61000-4-2
Protection grade
IP65 (with closed lid)
Operating temperature range
10 °F to 120 °F (-12 °C to 49 °C)
Storage temperature range
-10 °F to 160 °F (-23 °C to 71 °C)
Humidity range
98% RH (non condensing).
Rechargeable battery
LFP (LiFePO4), 12 V - 3000 mAh
Battery charger
AC adapter, input 100 - 255 V 50/60 Hz, output 12 V - 1 A
Equipment weight
Approx. 8 lbs (3.6 kg)
Dimensions
11" x 10" x 5" (approx. 280 x 254 x 127 mm)
