Observations And Restrictions For Tracking Indices Measurement In Materials Testing

Fuchs, A.; Zangl, H.

doi:10.21307/ijssis-2017-311

Abstract

The testing of various carrier materials for circuit paths on the basis of tracking indices determination is of particular interest for many modern sensing technologies, especially for technologies based on capacitive methods, as well as for the protection of circuitries by means of sealing in insulator material. This paper discusses observations for the determination of the tracking indices for elastic insulators according to the DIN standard EN 60112. The appearance of burn-in patterns on the insulator surface and the peculiar decrease of current peak amplitudes with increasing number of electrolyte droplets are investigated and possible causes are discussed, based on Finite Element Analysis and camera images of conducted experiments

References

1-, “Authoritative Dictionary of IEEE Standards Terms”, Seventh Edition, IEEE Press, 2000.
Search in Google Scholar Back to article
2A. Fuchs and H. Zangl, “Observations and Findings for the Determination of the Tracking Indices of Elastic Insulating Materials”, Proc. of the 2nd International Conference on Sensing Technology, Palmerston North, New Zealand, pp. 265-269, Nov. 26-28, 2007.
Back to article
3A. Ahmed, H. Singer, P. Mukherjee, “A numerical model using surface charges for the calculation of electric fields and leakage currents on polluted insulator surfaces”, Proc. of the Conference on Electrical Insulation and Dielectric Phenomena, Vol. 1, pp. 116–119, Oct. 25-28, 1998.
Search in Google Scholar Back to article
4P. Mukherjee, A. Ahmed, H. Singer, “Electric field distortion caused by asymmetric pollution on insulator surfaces”, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 6, No. 2, 1999, pp. 175–180.10.1109/94.765908
Search in Google Scholar Back to article
5G. Gerdin, V. Lakdawala, P. Basappa, “Computation of ac and dc electric field around a wet polluted insulator”, Proc. of the Conference on Electrical Insulation and Dielectric Phenomena, pp. 176-179, Oct. 20-24, 2002.
Search in Google Scholar Back to article
6P. Basappa, M. Williams, K. Agarwal, “Computation of electrostatic field around a partially wet insulator surface through numerical techniques and simulation”, Conference Record of the 2004 IEEE International Symposium on Electrical Insulation, pp. 292-295.
Search in Google Scholar Back to article
7M. Mousavi, K. Butler-Purry, “Experimental investigation of distribution transformer aged solid insulation”, Proc. of the 45th Midwest Symposium on Circuits and Systems, Vol. 2, pp. 192-195, Aug. 4-7, 2002.
Search in Google Scholar Back to article
8-, “Method for the determination of the proof and the comparative tracking indices of solid insulating materials”, Standard: DIN EN60112, Classification VDE0303, Part 11, Nov. 2003.
Search in Google Scholar Back to article
9F. Youssef, T. Eish, “Effect of electrode coating on leakage current and surface flashover strength in polymers”, Proc. of the 6th International Symposium on Electrets, pp. 344-348, Sep. 1-3, 1988.
Search in Google Scholar Back to article
10H. Woodson, A. Mcelroy, “Insulators with Contaminated Surfaces, Part III: Modeling of Dry Zone Formation”, IEEE Transactions on Power Apparatus and Systems, Vol. PAS-89, Nr. 8, 1970, pp. 1868-1876.10.1109/TPAS.1970.292771
Search in Google Scholar Back to article
11A. Mekhaldi, D. Namane, S. Bouazabia, A. Beroual, “Empirical model of a high voltage insulator under nonuniform pollution”, Proc. of the 11th International Symposium on High Voltage Engineering, Vol. 4, pp. 232-235, Aug. 23-27, 1999.10.1049/cp:19990835
Search in Google Scholar Back to article
12H. Matsuo, T. Fujishima, T. Yamashita, “Relation between leakage impedance and equivalent salt deposit density on an insulator under a saltwater spray”, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 6, No. 1, 1999, pp. 117-121.10.1109/94.752019
Search in Google Scholar Back to article
13L.K. Baxter, “Capacitive Sensors - Design and Application”, IEEE Press Series on Electronics Technology, New York, 1997.10.1109/9780470544228
Search in Google Scholar Back to article

Observations And Restrictions For Tracking Indices Measurement In Materials Testing

Abstract

Paradigm

My account