Electricity: electrical systems and devices – Safety and protection of systems and devices – High voltage dissipation
Patent
1983-03-17
1985-08-27
Pellinen, A. D.
Electricity: electrical systems and devices
Safety and protection of systems and devices
High voltage dissipation
361 91, 310 68R, H02H 322
Patent
active
045382000
ABSTRACT:
A power cable for a submersible motor has a releasable plug-in connector for releasable attachment to the motor. An oil-filled motor has solid conductors to the motor connector part and the flexible conductors to the cable connector part. The cable connector part has a plurality of lead terminals located in a common plane and a plastic molded shell which is flat and rectangular. A shell flange is bolted to the motor. An integrated voltage surge arrestor is located in an opening in the shell which exposes the terminals, and includes a thin arrestor block of silicon carbide or metal oxide varistor secured to a mounting plate which seals the opening. The silicon carbide block is a porous fragile unit supported by the plate and connected to ground by the well liquid, or by a connection to the clamp bolts. The two outer terminals are connected to the 230 voltage lines and the opening is formed with intermediate line insulation separating the chambers of such outer terminals. The arrestor assembly is similarly formed in either a two-wire or a three-wire submersible motor cable. The surge arrestor may be located within a motor and in other cable configurations.
REFERENCES:
patent: 2670452 (1954-02-01), Yonkers et al.
patent: 2959692 (1960-11-01), Marx
patent: 3435290 (1969-03-01), Lyman
A. O. Smith Corp.
Choe Hong K.
Pellinen A. D.
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