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Ballast Naming Convention

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  rev. 2007-07-31        

The Ballast Type field entry is built up from:

Lamp technology + lamp wattage + "x" + number of lamps + "v" + voltage (where not 120) + starting option (where needed) + other notes (where needed) + ballast factor (where needed)

Lamp Technologies

Lamp technologies are the same as for lamps, with the addition of:

lvi = low voltage incandescent (step-down transformer)

Starting Options apply only to fluorescent ballasts

is = instant start (best efficiency but a bit shorter lamp life)

rs = rapid start (lower efficiency but longer lamp life)

dim = dimmable ballast

Other notes apply mostly to fluorescent

Standard magnetic ballasts are assumed where not specified:

m = magnetic

es = energy-saving magnetic

el = electronic

Ballast factor

Ballast factor is a percentage of a base reference for fluorescent systems.  A standard ballast for any technology has a factor of 100, so a value of 100 is assumed if another value is not specified.  Lower ballast factor indicates that the lamps are driven at a lower wattage and will also produce less light.

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