Center ventilated resistor grid

Details Center ventilated resistor grid Center ventilated resistor grid

1988-05-20

1989-07-11

Goldberg, E. A.

Electrical resistors

With cooling gas or liquid circulation

Ventilated helical or zigzag element

338279, 338290, 338295, H01C 108

Patent

active

048475858

ABSTRACT:
A resistor grid for diesel electric locomotives and the like has a rigid frame comprising outer metal side pieces and one or more pairs of inner metal side pieces spaced from each other, and columns of resistor ribbon fan-folded between each outer and outermost inner side piece, and between certain inner side pieces. Supporting means interengaging each fold of the ribbons are insulated from and carried on each side by a metal strip which rides on its adjoining side piece so as to accommodate expansion of the resistor ribbon. The ribbon is indented between folds to stiffen it and increase its span and may by provided with a support rod centered between its side pieces. The resistor grid is preferably positioned in forced air cooled resistor banks face-to-face with conventional narrow span grids, and improves the cooling of such conventional banks.

REFERENCES:
patent: 2858402 (1958-10-01), Griffes et al.
patent: 3858149 (1974-12-01), Kirilloff
patent: 4011395 (1977-03-01), Beck
patent: 4100526 (1978-07-01), Kirilloff et al.
patent: 4146868 (1979-03-01), Kirilloff et al.
patent: 4316172 (1982-02-01), Luy
patent: 4651124 (1987-03-01), Kirilloff et al.
patent: 4651125 (1987-03-01), Harkness

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