Protected potted metallized film capacitor

Details Protected potted metallized film capacitor Protected potted metallized film capacitor

1986-12-16

1987-12-22

Griffin, Donald A.

Electricity: electrical systems and devices

Electrostatic capacitors

With protection or compensating means

361275, H01G 440

Patent

active

047149795

ABSTRACT:
A protective system to prevent a dry metallized film capacitor from exploding 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 positioning of thermal protector maximize its value in the protective system.

REFERENCES:
patent: 2644122 (1953-06-01), Boardman et al.
patent: 2940035 (1960-06-01), Lefkowitz
patent: 3178622 (1965-04-01), Paul et al.
patent: 3185759 (1965-05-01), Sheehan
patent: 3311697 (1967-03-01), Quinn
patent: 3496432 (1970-02-01), Mo et al.
patent: 3909683 (1975-09-01), Kysely
patent: 4423463 (1983-12-01), Serradimigni
patent: 4454561 (1984-06-01), Pearce et al.

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