Electrical apparatus, in particular a surge arrestor, having an

Details Electrical apparatus, in particular a surge arrestor, having an Electrical apparatus, in particular a surge arrestor, having an

1998-11-06

2000-02-22

Sherry, Michael J.

Electricity: electrical systems and devices

Safety and protection of systems and devices

High voltage dissipation

361124, 361103, 340653, H02H 322

Patent

active

060287594

ABSTRACT:
The electrical apparatus, which is designed in particular as a surge arrestor (3), has a dielectric housing (8) which can be loaded with high voltage as well as an apparatus for optical indication of a fault state caused by a fault current. The indicating apparatus is designed as an information carrier (9) which covers at least a portion of the outer surface of the dielectric housing (8). This information carrier (9) emits an optically detectable signal when heated to a limiting temperature which is above a permissible operating temperature of the apparatus. The information carrier (9) is advantageously designed as a thermocolor. A faulty apparatus can then be identified by the maintenance personnel for a system containing the electrical apparatus, in a simple and reliable manner by means of a color change.

REFERENCES:
patent: 5237482 (1993-08-01), Osterhout et al.
patent: 5325087 (1994-06-01), Mikli
patent: 5341271 (1994-08-01), Hutchinson

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