Kewtech KEW3128 12kV Insulation Resistance Tester

The Kewtech KEW3128 can output voltages up to 12kV, with a range of 30TΩ
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inc VAT £5,394.00 ex VAT £4,495.00
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Kewtech KEW3128 12kV Insulation Resistance Tester

The Kewtech KEW3128 is a microprocessor controlled 12kVDC insulation resistance tester capable of providing insulation resistance values of up to 35TΩ. Crucially, the KEW3128 is able to discharge dangerous capacitive charges, consequent when subjecting large DC voltages across inductive loads for set periods of time; allowing for safe testing of cable lengths and other HV equipment.

Ideal for simple compliance testing and leakage current tests, the KEW 3128 can also be used to conduct more in depth diagnostic checks such as:

  • PI - polarisation index measurements
  • DAR - dielectric absorption ratio
  • DD - dielectric discharge
  • SV - step voltage measurement

Test measurements can be viewed in ‘live time’ when connected to a PC or laptop, or on the instrument itself which features a large, 320x240 resolution graphical screen.  The in-built graphical screen can be scrolled through and zoomed in on specific points through the whole recording period (up to 90 mins), allowing for instant onsite diagnosis.  Moreover, a ‘print screen’ function is provided enabling the user to record a Bitmap (.bmp) image of the screen.

The Kewtech KEW3128 12kV tester features an impressive memory, capable of storing 40,000 measurements. When using and ‘KEW Windows’ software package, test data can be downloaded should further test verification or reports be required off-site.

The KEW3128 12kV tester is dual powered and can be operated from a mains supply or from an in-built re-chargeable battery. The insulation tester is supplied and can be operated from within a hard carry case that offers IP68 ingress protection (when the lid is closed), along with test leads, software and USB cable, calibration certificate and user manual.

Kewtech KEW 3128 12kV Tester key features

  • 500, 1kV, 2.5kV, 5kV, 10kV and 12kV test voltages
  • High 5mA short circuit current
  • 35TΩ resistance range

 Which Kewtech KEW HV Insulation Tester?

Test Voltage   
500V ✔ 
Max reading 1 TΩ 10 TΩ 35 TΩ
Voltage 30-600 V AC/DC 30-600 V AC/DC 30-600 V AC/DC
Leakage current  
Test Types   
Timed insulation resistance  
Polarisation index
Dielectric absorption ratio
Step voltage ✔ 
Dielectric discharge
Other Feature   
Analogue and digital display
Short circuit current 1.5 mA 5.0 mA 5.0 mA
Electrical noise rejection
Download software included  
What's In The Box?
  • 7170 (Main cord)
  • 7224A (Earth cord)
  • 7225A (Guard cord)
  • 7226A (Line probe),
  • 7227A (Line probe with alligator clip)
  • 8029 (Extension prod)
  • 8212-USB-W (USB adaptor with KEW Windows (Software))
  • Instruction manual
More Information

KEW3128 Specifications:

  • Voltage output: 500V, 1000V, 2500V, 5000V, 10000V,12000V
  • Short circuit current: 5.0mA
  • Maximum resistance: 35TΩ
  • Voltage measurement: 30-600VDC, 30-600VAC (50/60Hz)
  • Current measurement: 5.00nA - 2.4mA
  • Capacitance measurement: 5.0nF-50.0µF
  • Power: Rechargeable Lead storage battery (12V) 4 hours continuous use
  • Charging time: approx. 8 hours / AC Power supply (100V - 240V, 50/60Hz)
  • Dimensions: 330 (L) × 410 (W) × 180 (D) mm Instrument and Hard case
  • Weight: 9kg approx (including battery) Instrument and Hard case