UMD 97EVU – Measurement technology for CAT IV environments


The UMD 97EVU is a powerful front panel meter* for CAT IV environments. It measures 3-phase current and voltage in 4-quadrant operation in class 0.2 and thus the work in class 0.5s as well as all common mains quantities, e.g. harmonics up to the 50th harmonic. It can be connected via current transformers with N/5 A and N/1 A. It maps the mains quality according to EN 50160, EN 61000-2-2, EN 61000-2-4, EN 61000-2-12. It has a brilliant large colour graphic display. The UMD 97 is conveniently operated via 5 function keys. A PT100 sensor is integrated internally. It has a large 512 MB memory. The unit can be accessed via the Ethernet interface and the mini USB connection on the front. This means that Internet protocols can also be used and PLC and building management systems can be easily connected. Digital inputs/outputs and a serial RS485 interface are also integrated. For network analysis, the measuring device can be extended with the firmware modules PQ S and GO. The ENVIS software is used to parameterise or visualise the unit.

* Also suitable for top-hat rail mounting with adapter.


The unit is used in all CAT IV environments. A suitable CAT IV power supply unit can be found in our accessories.


  • Product Icon Inputs 3u 4i
  • Product Icon Measurement U I P Q
  • Product Icon Pf Cos Thd
  • Product Icon Wh Varh
  • Product Icon Harmonics 50
  • Product Icon Supply 24v
  • Product Icon Sampling 25,6 kHz
  • Product Icon Flash 512MB
  • Product Icon USB
  • Product Icon Standards IEC 61557-12
  • Product Icon Standards class 0.5S IEC 62053-22
  • Product Icon Inputs 2x Digi
  • Product Icon Current Input X 5a
  • Product Icon Modbus
  • Product Icon NTP
  • Product Icon Webserver
  • Product Icon ETH
  • Product Icon RS485
  • Product Icon Outputs 2x Relay
  • Product-icon-cat-iv


  • Product Icon Standards EN 50160
  • Product Icon Standards class S IEC 61000-4-30
  • Product Icon Firmware RCS
  • Product Icon Firmware GO
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