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Descriptive Information
Genteq Capacitors
Capacitors for Motor Run Applications
Metallized film capacitors are unsurpassed in terms of size, weight, performance, and reliability for
A C applications. Regal-Beloit brings over 60 year of capacitor manufacturing experience to the
product lines described in this publication. These capacito rs represent t he best in product design
for long-term reliability and safe operation. Regal-Beloit’s materials, product, and process
development work cont inue to provide capacitor users with outstanding t o tal value.
The GEM III M otor Run Capacitors are widely used with permanent split phase capacitor m otors
for the more efficient use of electricity. These motors are used in heating and cooling
equipment, appliances, business machines, office equipment, and a wide variety of light
commercial and industrial equipment.
GEM III Construction
Regal-Beloit’s GEM III capacitors are manufactured with
high-grade me tallized polypropylene f ilm. This f ilm is in the
range o f 5 to 10 microns thick, depending on the
application, voltage, and conditions. The metallized
electrode is several hundred angstroms thick.
The film is wound into capacitor ro lls on high-speed, high-
precision machines. The w inding is extremely tight so that
there is not enough space betw een the layers for corona
( localized pa rtial electrica l dischar ges) to occur. The rolls
are sprayed on both ends with metal to m ake the
connection t o th e ex t remely thin edges of the metallized
electro des. This process is critical to the quality and
performance of the capacitors.
The rolls are assembled in metal cases, Regal-Beloit’s
proprietary dielectric liquid is introduced un der vacuum,
and the capacitors are sealed. They are then subjected
to 1 0 0 % electrical tes t ing for capa cit a nce, dissipat ion
factor, and high potential electrical withstand, both
terminal-to-terminal and terminal-to-case.
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