Transformer arrangement for coupling a communication signal to a

Details Transformer arrangement for coupling a communication signal to a Transformer arrangement for coupling a communication signal to a

1978-08-17

1980-02-12

Caldwell, Sr., John W.

Communications: electrical

Systems

Selsyn type

323 48, H04B 354, H04B 356

Patent

active

041886194

ABSTRACT:
A communication signal is coupled simultaneously to all three phases of a neutral-wye three-phase power line through a transformer arrangement consisting of a low voltage set of three serially connected windings across which the signal is applied to produce the same current in all three windings and a high voltage set of three windings which are connected in a neutral-wye configuration to the power line with a winding of each set being magnetically coupled to a different winding of the other set such that the currents induced in all three windings of the high voltage set flow in the same direction with respect to the neutral connection.

REFERENCES:
patent: 1839301 (1932-01-01), Duncan
patent: 2319633 (1943-05-01), Roseby et al.
patent: 2647253 (1953-07-01), Mackenzie et al.

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