Protected potted metallized film capacitor

Details Protected potted metallized film capacitor Protected potted metallized film capacitor

1987-05-01

1988-12-13

Griffin, Donald A.

Electricity: electrical systems and devices

Electrostatic capacitors

With protection or compensating means

361275, H01G 108, H01G 111

Patent

active

047915293

ABSTRACT:
A protective system to prevent a dry metallized film capacitor from rupturing its case or catching fire in the event that an internal short or fault occurs within the capacitor section utilizes a fuse and a thermal protector connected in series with the capacitor section and within its case. The fuse serves to protect the unit from a fault-induced low resistance high current in-rush, while the thermal protector is triggered by a fault-induced high resistance low current. A heat reflective circumferential sheet and the positioning of thermal protector maximize its value in the protective system.

REFERENCES:
patent: 3244952 (1966-04-01), Graf
patent: 4150419 (1979-04-01), Epple et al.
patent: 4186417 (1980-01-01), Grahame
patent: 4633365 (1986-12-01), Stockman
patent: 4635163 (1987-01-01), Voglaire

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