Christian Helmig

Optical partial discharge sensor for on-line-monitoring of oil insulated transformers

Christian Helmig, 2000, International Conference on Optical Fibre Sensors.

Fiber optical online monitoring for high-voltage transformers

Christian Helmig, Joerg Teunissen, Ralf Merte, 2001, SPIE Optics East.

Optical measurement system for power cable monitoring

Christian Helmig, C. Helmig, 1999, International Conference on Optical Fibre Sensors.

Optical low-cost temperature point sensor

Christian Helmig, Joerg Teunissen, J. Teunissen, 2000, Symposium on Applied Photonics.

Optical current sensor using two flint glass fibers as sensing element

Christian Helmig, 2000, International Conference on Optical Fibre Sensors.

Switching unit and method of making a contact device

Christian Helmig, Hans-Hilmar Schulte, Ulrich Rosemeyer, 2009 .