Capcom Capacitors
Capcom for HID Lighting Applications
Genteq metallized film capacitors are unsurpassed in terms of size, weight, performance, and
reliability for AC applications. Capcom over 60 year of capacitor manufacturing experience to the
product lines described in this publication. These capacitors represent the best in product design for
long-term reliability and safe operation. Capcom´s materials, product, and process development
work continue to provide capacitor users with outstanding total value.
The GEM III HID Lighting Capacitors are designed specifically for HID Lighting applications where
the capacitors are used as part of the ballast circuit for mercury vapor, metal halide, and high-
pressure sodium lamps. The units are designed to operate at temperatures up to 90oC, which is the
normal requirement for HID ballast capacitors. Due to advances in material technology and
breakthroughs in proprietary capacitor manufacturing processes, selected ratings are now
available for operation up to 100oC for 60,000 hours.
GEM III Construction
Capcom´s GEM III capacitors are manufactured with
high-grade metallized polypropylene film. This film is in
the range of 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 rolls on high-speed,
precision machines. The winding is extremely tight so
that there is not enough space between the layers for
corona (localized partial electrical discharges) to occur.
The rolls are sprayed on both ends with metal to make
the connection to the extremely thin edges of the
metallized electrodes. This process is critical to the
quality and performance of the capacitors.
The rolls are assembled in metal cases, Capcom´s
proprietary dielectric liquid is introduced under vacuum,
and the capacitors are sealed. They are then subjected
to 100% electrical testing for capacitance, dissipation
factor, and high potential electrical withstand, both
terminal-to-terminal and terminal-to-case.
Descriptive Information
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