SKU: MT574

5kV Diagnostic Insulation Tester

$2,135.00 ex. GST
$2,348.50 inc. GST

  • Insulation Test Voltages from 100V to 5000V, with increments of 50V
  • Microprocessor controlled with 4-bit large backlit display
  • Test insulation resistance up to 10TΩ
  • Short circuit current up to 6mA
  • DAR – Dielectric Absorption Ratio indication
  • PI – Polarization Index indication
  • Measurement of up to 750V AC and up to 1000V DC
  • Auto ranging on all insulation ranges
  • Adjustable test time from 1 minute to 30 minutes
  • Auto hold to freeze measurement readings
  • 500 measurement results can be saved in memory and recalled onto the display
  • Alarm when the measured value larger or smaller than the alarm setting value
  • Auto Power Off

The MT574 5000V DC CAT III 300V Diagnostic Insulation Tester, with increments of 50V on each range will automatically discharge the circuit after the test has been completed. Using the range button switches, 6 preset ranges of 100V, 250V, 500V, 1000V, 2500V and 5000V can be selected, with an insulation resistance up to 10TΩ. The microprocessor controlled MT574 has the capability of being a diagnostic tool and is intended for testing insulation on Rotating Machines, Transformers, Cables, High Voltage Generators, Electric Circuits and Surge Arrestors. The short circuit current output is up to 6mA. It has the function of measuring Absorption Ratio and Polarization Index of AC voltage and DC voltage and 500 test measurement results can be saved in the memory of the meter and recalled onto the LCD display. The large backlit LCD display indicates the readings of insulation, measuring time, output voltage and output current. The MT574 can measure up to 750V AC and up to 1000V DC and Capacitance up to 50μF, and is housed in a robust case ideal for extended field use, powered by 12.6V rechargeable Lithium Batteries. Stored data can be transferred to a PC using an optical USB and software supplied.

SKU: MT574 Category:


Function Range Resolution Accuracy
Insulation 100V 0.05 MΩ~500GΩ 0.001MΩ ±3%rdg ± 5dgt
Insulation 250V 0.1MΩ~1000GΩ 0.001MΩ ±3%rdg ± 5dgt
Insulation 500V 0.2MΩ~2000GΩ 0.001MΩ ±3%rdg ± 5dgt
Insulation 1000V 0.5MΩ~10TΩ 0.01MΩ ±3%rdg ± 5dgt
Insulation 5KV 2MΩ~10TΩ 0.01MΩ ±3%rdg ± 5dgt
DC voltage 0.0V~1000V 0.1V ±1.5%rdg±3dgt
AC voltage 0.0V~750V 0.1V ±1.5%rdg±3dgt
DC current 1mA – 1000pA 1pA ±30%rdg ± 5dgt
Capacitance 10uf – 100nf 0.1nf ±10%fs.±5dgt
Basic condition 23°C ± 5°C, below 75%RH
Rated voltage 100V, 250V, 500V, 1000V, 5kV
Test Voltage(V) Rated voltage x (1±10%)
Output short-circuit Current ≥6mA@15KV
Absorption, Ratio and Polarization Index Measurement  Yes
Power Supply 12.6V rechargeable battery
Backlight Yes
Display Mode 4-bit large LCD display, grey screen backlight
LCD display size 108mm x 65mm
Instrument size  240mm x 188mm x 85mm
USB interface Yes
Communication Line USB communication line 1PC
Test Lead High voltage probe red 3m, high voltage test lead black 1.5m, green 1.5m
Data Storage 500 groups
Data Review Yes
Overflow Display Yes
Alarm Function Alarm when the measured value larger or smaller than the alarm setting value
Instrument weight 2750g (including battery)
Low Battery Display Yes
Automatic shut-down Automatic shutdown after 15 minutes
Insulation Resistance ≥50MΩ (between Measuring line and housing)
Pressure Resistance AC3kV / 50Hz 1min
Working Temperature and Humidity -10°C to 50°C<85%RH
Storage Temperature and Humidity -15°C to 55°C<90%RH
Safety Regulations IEC61010-1, IEC1010-2-31, IEC61557-1,5,

IEC60529 (IP54) pollution grade 2, CAT III 300V

Safety Rating


  • High Pressure Rod (red)
  • High voltage test land (black and Green)
  • Monitoring Software CD
  • USB Communication Line
  • Charger
  • Instruction Manual