Insulation system method for multiturn coils of high voltage ele

Details Insulation system method for multiturn coils of high voltage ele Insulation system method for multiturn coils of high voltage ele

1988-06-03

1990-04-24

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

2642722, 310 45, H02K 1506

Patent

active

049188011

ABSTRACT:
Insulation of multiturn high voltage stator windings is effected by applying interturn insulation in the form of glass-backed mica paper pre-treated with resin taken to a B-stage cure, at least to straight slot-engaging parts of the windings. The interturn insulation is mechanically consolidated and thermally cured and main insulation is then applied to the slot-engaging parts and end parts of the windings and consists of glass backed mica paper pre-treated with resin without a curing agent. The slot engaging parts are next mounted on the stator and the end parts of the windings are connected to them to form electrically completed windings which are then impregnated with a resin compound by a vacuum and pressure process followed by a thermal cure.

REFERENCES:
patent: 2970936 (1961-02-01), Richardson
patent: 4399191 (1983-08-01), Iwabuchi et al.
patent: 4405553 (1983-09-01), Rothman et al.
patent: 4724600 (1988-02-01), Studniarz et al.
"Neue Isolierung Steigert die Motoleistung" Asea-Zeitschrift, vol. 22, No. 5, p. 118.

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