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Fluid Indicator

The Fluid Indicator is a mechanical short-circuit indicator which is designed to detect short-circuit currents in medium voltage distribution networks.

Mechanical Short-Circuit Indicator

Product Features

  • Mechanical design
  • Installation on cables or busbars
  • Fault indication by fluid and coloured particles in the mixer
  • Suitable for retrofitting

The Fluid Indicator is a mechanical short-circuit indicator which is designed to detect short-circuit currents in medium voltage distribution networks.

The indicator is tripped by a magnetic field strength designated by “H” that is generated by currents I ≥ trip current. When a short-circuit occurs, the mixer is pulled up by the magnetic field stirring up red particles in the fluid. The indication is reset automatically after about 6 to 8 hours once the red particles have set to the bottom of the mixer.


Product

Note Item Number

Fluid Indicator

Item Number20-04xx-000


Technical Data

Technical Data

Indicator with Fluid

I>> Short-circuit trip current

400, 600, 1,000 A (factory setting)

 

tI>> Response time

 

200 ms at rated trip value
(100 ms are available on request)

Accuracy

±20 %

Reset

Automatic reset by time: after about 6 to 8 h

Material

  • Housing and fixing screws made from polyamide

  • Yoke made from ferromagnetic steel

Temperature range

-40 to +85 °C

Dimensioned Drawings

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Contact

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