The ballast name 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
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
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 reference for fluorescent systems. Lower ballast factor indicates that the lamps are driven at a lower wattage and will also produce less light.