EURO-ECO 2007 Hanover 4 - 5 December 2007	Environmental and Engineering Aspects for sustainable living
	European Academy of Natural Sciences, Hanover European Scientific Society, Hanover Russian Academy of Natural Sciences, Moscow

Home

Abstracts EURO-ECO 2007

Contact

Disclaimer

Shalaginov A.A.

The aim of the present study is the development of a specialized technology to increase operation reliability of electrical contacts.

It is well known, that in compliance with the data provided by the Fire Safety Research Institute (VNIIPO), 50% of inflammability cases at industrial enterprises and private housing result from faulty electrical installations. At that 50% of fires on electrical equipment are associated with breakage of electrical contacts (EC).

Thus, one of the most facilitated, inexpensive and reliable means for assuring fire safety, provided for application by our company, are the super conductive lubricants SCL-90 (operational temperature 90° C); SCL-150 (150° C); SCL-250 (250° C). The super conductive lubricants (SCL) provide for increase of effective contact surface area to reach its actual size, which provides for significant decrease and stabilization of electrical resistance within a continuous period of time. At that, due to the qualities of the SCL, hermetic quality of the contact connection area is achieved, as well as practically complete restriction of ambient air and penetration of various chemically active elements: chlorine, water, oxygen, etc. As a result growth of extraneous film in the area of the contact connection terminates. Application of SCL to electrical contacts provides for significant decrease and stabilization of electrical resistance, more equal distribution of current over parallel current leads and busses, lower reheat temperature, decreased electricity loss, increased lifetime and time between preventive maintenance inspections and electrical contacts repair operations, as well as assuring of reliable and failure-free operation of the electrical equipment at industrial enterprises.

At the same time, it is necessary to pay due attention to the operational temperature of the electrical contacts while the above listed results need to be acquired, as well as application of SCL in the EC, designed for operational reheat temperatures exceeding the actual reheat temperature of the EC with a margin and further continuous periodic visual check of the EC reheat temperature. The proposed technology increasing reliability of the EC operation completes the required tasks fully and successfully and may be used at industrial enterprises in various branches of industry, also including chemical industry and metallurgy.