Capacitor-run dry type submersible motor assembly with a built-i

Details Capacitor-run dry type submersible motor assembly with a built-i Capacitor-run dry type submersible motor assembly with a built-i

1984-09-18

1986-09-30

Smith, Jr., David

Electricity: motive power systems

Induction motor systems

Primary circuit control

318794, 310 87, H02P 144

Patent

active

046149040

ABSTRACT:
A new assembly for a capacitor-run submersible motor-pump. The assembly has a built-in starting capacitor and a built-in switch associated with the starting capacitor. A running capacitor is located external to the assembly. With this arrangement, the assembly has only four terminals including a ground terminal connected to the frame of the motor. Thus, a four-conductor cable, i.e. the most commonly used cable, can be used to connect the assembly to an electric distribution panel. The switch is preferably of a centrifugal type triggered at a predetermined speed of the motor to cut the starting capacitor out of the circuit. The assembly is as compact as a conventional capacitor-start motor assembly.

REFERENCES:
patent: 2539048 (1951-01-01), Arutunoff
patent: 2997609 (1961-08-01), Lung
patent: 3457866 (1969-07-01), Komor
patent: 3761750 (1973-09-01), Green
patent: 4387313 (1983-06-01), Yamamoto et al.

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