Title (en)

METHOD AND APPARATUS FOR PROTECTING ELECTRICAL EQUIPMENT

Publication

EP 0357343 A3 19901227 (EN)

Application

EP 89308612 A 19890824

Priority

ZA 886541 A 19880902

Abstract (en)

[origin: EP0357343A2] The invention relates to a method of and apparatus for protecting electrical or electronic equipment from electromagnetic interference. Such a method includes the initial steps of detecting the electromagnetic interference, and generating an input signal which represents the interference. The level of the input signal is then compared to a predetermined threshold level, and an output signal is generated to initiate a protective measure, such as interrupting the power supply to the equipment, in the event of the input signal level exceeding the predetermined threshold. The apparatus for protecting the equipment includes detection means (1) for detecting the electromagnetic interference, and generating a representive input signal, level detection means (5) for comparing the input signal level to a threshold level, and control means (6,7) for generating an output signal to initiate a protective measure.

IPC 1-7

G08B 29/18

IPC 8 full level

G08B 29/18 (2006.01)

CPC (source: EP)

G08B 29/185 (2013.01)

Citation (search report)

• [X] GB 1119941 A 19680717 - GEORGE SCOTT BOWMAN
• [Y] GB 1030243 A 19660518 - NAPIER & SON LTD
• [Y] US 4466071 A 19840814 - RUSSELL JR B DON [US]
• [A] DE 1279512 B 19681003 - AUGUST WOERL
• [Y] CH 105100 A 19240602 - OERLIKON MASCHF [CH], et al
• [A] US 4206451 A 19800603 - KURSCHNER DENNIS L [US]

Designated contracting state (EPC)

AT BE CH DE ES FR GB GR IT LI LU NL SE

DOCDB simple family (publication)

EP 0357343 A2 19900307; EP 0357343 A3 19901227

DOCDB simple family (application)

EP 89308612 A 19890824