understanding different load types that can be dimmed
DESCRIPTION
understanding different load types that can be dimmed. technical assistance. 1-800-523-9466 24 hours a day 7 days a week. dimming basics lamp fundamentals. Most standard lamps have the same basic construction (i.e. incandescent, halogen, low-voltage, spots, floods, etc.). - PowerPoint PPT PresentationTRANSCRIPT
understanding different
load types that can
be dimmed
technical assistance
• 1-800-523-9466• 24 hours a day • 7 days a week
dimming basicslamp fundamentals
• Most standard lamps have the same basic construction (i.e. incandescent, halogen, low-voltage, spots, floods, etc.)
dimming basicslamp fundamentals
• A voltage is placed across the filament
• Current passes through the filament and creates heat
• The filament glows, creating light
dimming basicslamp fundamentals
• Tungsten filaments are fairly good at withstanding the heat tungsten
melting point of tungsten = 3,695ºK
dimming basicslamp fundamentals
• However, over time, the tungsten evaporates off of the filament …
dimming basicslamp fundamentals
• … and gets necked down until it can no longer handle the energy
selecting the right productload type identification
• Incandescent/halogen lighting– Line voltage placed across the lamp– The lamp dissipates power– The power dissipation generates heat– The lamp gets so hot that it glows
Why does a low voltage lamp need a transformer?load type identification
• Magnetic low-voltage (MLV)– Heavy core-&-coil transformers driving 12-volt
or 24-volt lighting– Typically used for accent lighting or to bring
out certain colors
Why do people use low voltage?
• Magnetic low-voltage (MLV)– Heavy core-&-coil transformers driving 12-volt
or 24-volt lighting– Typically used for accent lighting or to bring
out certain colors
selecting the right productload type identification
• Electronic low-voltage (ELV)– Light-weight circuitry-based transformers
driving 12-volt or 24-volt lighting
– Also used for accent lighting or to bring out certain colors
selecting the right productload type identification
• Fluorescent– Fluorescents require a ballast to generate the
necessary amount of voltage to get the lamp started up and to continually regulate it
ganging & derating (catalog page 53)
• The electronics used to dim the lights dissipate some energy as heat
• The metal yoke (heat sink) is used to dissipate that heat
ganging & derating
• In multi-gang applications, side-sections (fins) need to be broken off
load typesdim
mer
types
Electronic Low Voltage
Dimmer
Magnetic Low Voltage
Dimmer
Incandescent/Halogen
IncandescentDimmer
selecting the right productload type identification
Magnetic Low-Voltage
Electronic Low-Voltage
load typesdim
mer
types
ELV
MLV
Incandescent/Halogen
Incandescent
Magnetic Low-Voltage
Electronic Low-Voltage
selecting the right productload type identification
the right dimmer for the right load
OK
OK
OK
selecting the right productload type identification
load typesdim
mer
types
ELV
MLV
Incandescent/Halogen
Incandescent
Magnetic Low-Voltage
Electronic Low-Voltage
OK
OK
OK
NO!
NO!
selecting the right productload type identification
load typesdim
mer
types
ELV
MLV
Incandescent/Halogen
Incandescent
Magnetic Low-Voltage
Electronic Low-Voltage
OK
OK
OK
NO!
NO!
NO!
selecting the right productload type identification
load typesdim
mer
types
ELV
MLV
Incandescent/Halogen
Incandescent
Magnetic Low-Voltage
Electronic Low-Voltage
OK
OK
OK
NO!
NO!
NO!
NO!
selecting the right productload type identification
load typesdim
mer
types
ELV
MLV
Incandescent/Halogen
Incandescent
Magnetic Low-Voltage
Electronic Low-Voltage
OK
OK(can be mixed with incandescent loads)
OK(can be mixed with incandescent loads)
NO!
NO!
NO!
NO!
OK
OK
Incandescent loads will work on MLV or ELV dimmers
selecting the right product
• To ensure the success of a dimming application – you must make sure the dimmer and the load type are matched correctly!