Grounded surface distribution apparatus

Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – Fusible element actuated

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Details

339 94R, 339111, 339143R, 174 73R, 339 60R, 339192R, 174 52PE, H01H 8502, H01R 1352

Patent

active

039493431

ABSTRACT:
A grounded surface distribution apparatus and system is provided including elastomer encapsulated cable terminals, joints, taps, load-break switches, current limiting fuses and surge protectors, each enclosed completely within a metal sheath combined in various arrangements to perform operational functions required in loop and radial underground distribution systems. The cable terminals include a soft dielectric filler making a void-free interfacial engagement with the surface of a hard dielectric filler of a mating component. To provide for breaking a coupling under load, an arc-quenching follower is retractable into an axial cavity in the coupling components of the system and projectable therethrough upon breaking of the circuit and disconnecting of the components to provide an improved arc-quenching function. Thus, there is provided an underground system having security, operational safety and convenience.

REFERENCES:
patent: 2839636 (1958-06-01), Brown
patent: 3085138 (1963-04-01), Brown et al.
patent: 3179853 (1965-04-01), Kozacka
patent: 3377487 (1968-04-01), McNulty
patent: 3522404 (1970-08-01), Traynor

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