Method of and apparatus for the localizing of security line faul

Details Method of and apparatus for the localizing of security line faul Method of and apparatus for the localizing of security line faul

1976-12-02

1979-04-24

Strecker, Gerard R.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

G01R 3111

Patent

active

041514599

ABSTRACT:
A method of and an apparatus for localizing line faults in security lines for ski lifts and the like in which a voltage step is applied to the security line, the response to this voltage step is determined and this response is compared to the response obtained in the absence of a fault, the difference resulting from the comparison indicating the place of the fault and the type of fault.

REFERENCES:
patent: 3031643 (1962-04-01), Sheftelman
patent: 3517306 (1970-06-01), Anderson et al.
patent: 3614608 (1971-10-01), Giedd et al.
patent: 3636443 (1972-01-01), Singh et al.
patent: 3710240 (1973-01-01), Kuehnemann et al.
patent: 3716783 (1973-02-01), Deering
patent: 3727128 (1973-04-01), McFerrin
patent: 3753086 (1973-08-01), Shoemaker
patent: 3991362 (1976-11-01), Blair et al.
Gale, P. F., Cable-fault location by impulse-current method Proc. IEE, vol. 122, No. 4, Apr. 1975 pp. 403-408.

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