Refrigeration system with load balancing control for at least th

Details Refrigeration system with load balancing control for at least th Refrigeration system with load balancing control for at least th

1979-02-14

1981-02-03

Wayner, William E.

Refrigeration

Automatic control

Diverse, cascade or compound refrigeration-producing system

62510, 318 98, 417 3, F04B 4106, F25B 700

Patent

active

042480540

ABSTRACT:
An improved load balancing control circuit for at least three electric motor-driven centrifugal refrigerant compressors comprises a current transformer secondary 90', 91', 92' and a respective load resistor 93', 95', 97' in series to form the legs of a circuit in which the legs are connected in a delta, each leg having a shorting switch 110', 111', 112' connected across it, and a balancing resistance network including balancing resistors 94', 96', 98' are connected in a wye circuit with the delta circuit.

REFERENCES:
patent: 3162793 (1964-12-01), Mason
patent: 3774092 (1973-11-01), Messervey et al.
patent: 4152902 (1979-05-01), Lush

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