Abstract
While the preceding chapters deal with the physics of stationary contacts seen from a theoretical aspect, this chapter gives examples of how to use the knowledge for understanding stationary contacts as they appear in practice. Here the word stationary expresses that switching during applied voltage appears either seldom or not at all and that the wear, which occurs at switching current by the contact, need not be considered. Typical examples of a stationary contact in the sense of this chapter are bolted bus bars, the terminal contacts of an ammeter, even the plug-socket contact, and also many relay contacts.
A completion of this Chapter as to moving contacts is given in § 70.
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Reference
Survey: DIXON and TAYLOR [1].
Published in 1963 by American Welding Soc., New York.
A completion of this Chapter as to moving contacts is given in § 70.
Cadmium behaves like zinc.
Experience has shown that a three to ten times greater contact load is needed to give fairly clean, flat contacts the same conducting surfaces as are obtained with wires.
RICHTER [1]; RICHTER and SCHADE [2].
See BORCHERT W.
See U. B. THOMAS [1],[3], and R. C. BAKER. [I]. (’f. the valuable review by KEEFER and GUMLEY [7].
Cf. Arcvs [3], [4].
See HOWGAARD et al. [1], DUMBAULD[1], WAGAR[1] and WOLAK[1], REUCH [1].
An iron-nickel alloy that can be fused to glass.
OETTL [I] gives an interesting review of the number of operations reached with different contact types.
R. J. HAMILTON [1],examples also in PF1STERER et al.[11. The probe is described in § 90.
The epilamen was manufactured in the organic laboratory of Siemens & Halske A. G. ßerlin, Germany.
Cf. R. Holm [34].
As to Z see Eq. (41.03).
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© 1967 Springer-Verlag Berlin Heidelberg
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Holm, R. (1967). About stationary contacts in practice. In: Electric Contacts. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-06688-1_30
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DOI: https://doi.org/10.1007/978-3-662-06688-1_30
Publisher Name: Springer, Berlin, Heidelberg
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