Surge tester ST 4000B

The practical allrounder for your coils and windings.

The surge tester ST 4000B was developed for uses of all kinds – no matter if in production, quality assurance, development or repair. Almost 40 years of experience in safety test technology have flown into its development – the result is a surge tester on the cutting edge of technology.

Innovative, powerful and reliable

Type of device
Plug-in 19" / 6 HU

Surge voltage: Voltage range
100 – 6,000 V

Surge voltage: Impact capacity
18 nF, optional: 47 nF, 100 nF, 200 nF

High voltage DC: Voltage range
100 – 6,000 V / 10 mA

Insulation DC: Measuring range
100 – 6,000 V / 10 GΩ/kV

20 mΩ – 200 kΩ up to 1A

Internal Matrix
4 Phase + PE, 4-wire

Partial discharge
Measurement voltage: 100 – 6.000V Measurement method: according to IEC 61934

Winding goods like stators, coils or transformers can be examined precisely and comfortably with the surge tester ST 4000B. Just like that, winding shorts and insulation faults inside a winding can be recognised even before the fault has an effect on the DUT. This avoids breakdowns of electric motors and any related call-backs.

Modern – efficient – intuitive

Due to the well-known Windows operating system in combination with the big 15.6“ touch display, the ST 4000B is as easily usable as a modern smartphone. You can integrate the ST 4000B into your company’s network without any problems due to numerous interfaces like USB and Ethernet / LAN. The DAT software developed by SPS electronic, which has an extensive test editor, does not only allow the creation and parameterisation of own test programs but also a comfortable evaluation, saving and processing of the test results. Alternatively, we provide a DLL as an attachment to support your individual software creation.

All of this and much more…

The ST 4000B can be combined with additional testing technology from SPS electronic without any problems. Thus, the surge tester can be expanded by a resistance test or a hipot test, depending on the requirements.

  • Top of the line surge tester (detection of winding shorts, insulation faults and partial discharges inside the winding)
  • According to national and international standards (IEC, EN, UL, VDE etc.)
  • 15.6“ touch display
  • Expandable by further test technology, depending on the requirements
  • PC-Software for remote-control of the device or alternatively DLL for an individual software design
  • USB and Ethernet / LAN interface
  • Internal touchpanel PC with DAT-Software


Individual solutions

Customer-specific test systems according to your individual needs.

Learn more


Multifunction tester

Do you need to perform multiple tests with a single device?

Go to the multifunction testers >


Do you have any questions? We are glad to help you.

I'm interested in: