|
Sylvania BallastsMetal Halide, HPS, Fluorescent |
HID Ballast Types
Core & Coil
The core and coil Sylvania ballast is the most
common type and it is comprised of
copper coils mounted on electrical grade
steel laminations. Capacitors, which are
used for either lamp regulation or power
factor correction may be added along
with ignitors which may be used to help
start the families of Pulse Start lamps.
Core and coil Sylvania ballasts are typically UL
Recognized and therefore must be enclosed in a luminaire.
This is required for the luminaire to receive UL Listing and
meet CSA requirements. Class H insulation is most
commonly used in core and coil ballasts which permits a
maximum coil hot spot temperature of 180°C.
F-Can
SYLVANIA F-Can
ballasts are designed
for indoor, low noise
applications and utilize
the familiar fluorescent
type ballast cans.
Since the F-Can style
ballasts are typically
used indoors within a
luminaire, the ballast
input voltage is limited
to 120 and 277 volts. Each ballast has a power factor
correcting capacitor within the ballast case and an automatically
re-setting thermal protector that disconnects power to
the ballast in the event of excess heat within the ballast. For
ballasts such as HPS and pulse start metal halide, the
ignitor is built into the ballast. SYLVANIA F-Can ballasts
operate a range of metal halide, pulse start metal halide and
high pressure sodium lamps. These ballasts are UL listed.
Indoor Enclosed
Indoor Enclosed Sylvania ballasts are used in applications
where remote mounting of the
ballast from the fixture is required, such as
in high bay lighting found in factories.
The remote location allows the ballasts to
be operated in a cooler ambient
environment than the fixture. These ballasts
contain a core & coil ballast and are mounted and
encased in a heat dissipating resin in a metal
enclosure. The capacitor and ignitor, when
required are located within a separate
compartment in the enclosure. Knockouts are on
the ballast case to allow for electrical hookup.
These ballasts are UL listed.
Fluorescent Ballast Types
Rapid Start Ballasts
Operate the popular
T12, T10 and T8 lamps
with a smooth start to
ensure optimal
performance. A rapid
start ballast starts a
lamp by simultaneously
applying current to both
lamp cathodes and voltage across the lamp. This automatic
heating of the lamp cathodes removes the need for a
separate starter used in
pre-heat lamp types and
eliminates the flicker
associated with pre-heat
start ballasts.
HO and VHO Ballasts
HO and VHO ballasts are rapid start T12
ballasts designed to operate the High Output, (800 mA
lamps) and Very High Output, (1500 mA lamps) T12 lamps
popular in the retail and industrial environments. These
ballasts are typically larger versions of the standard F-Can
to handle the higher power loads of these systems.
HO Sign Ballasts
New T12 high
output (HO)
magnetic ballasts
for sign applications
are designed to
meet or exceed
industry standards
and requirements
for the sign
business. Sign
ballasts typically operate 2-6 lamps and are selected by
quantity of lamps to operate and the lineal footage of lamps
used by the ballast.
|
|
|
|
