Insulation resistance units 90-4K

Insulation resistance testing of insulation materials and electrical appliances or equipment

The test units enable versatile deployment options in manual or automated systems for the insulation resistance testing of electrical appliances and insulation materials. The configurable voltage and measurement ranges also enable flexible adjustment to the widest possible range of test specifications.

  • 3 RU slide-in system
  • High-quality metal system module
  • Service-friendly – can be replaced in just a few steps

Test voltage

500 … 550 VDC/500 … 1000 VAC

Measurement ranges

0 … 10 • 100 • 1000 MΩ

Test current

< 12mA


Digital, analogue output

Line voltage

230 V +/−10%; 49 … 61 Hz

Form factor

3 RU • 36 HP


2.8 kg


Other interfaces on request

90-4K  E10

Ethernet instead of digital/analogue

90-4K  E11

Ethernet+RS232 instead of digital/analogue

90-4K  E12

USB instead of digital/analogue

  • 30-6M housing 3 RU/36 HP
  • 90-4K E99 factory calibration

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