Pay on line now!

Free Call  0508 248 935
0508 C I T Y E L E C T R I C

 

Read reviews from our customers on NoCowboys

See our feedback on No Cowboys

Will switching fluorescent lights on/off frequently shorten their life?

Answer

When a fluorescent lamp is operating, a small amount of the
electron emissive material held on the cathodes is continually
consumed, the rate of consumption increasing with higher lamp
current. Additionally, when starting the lamp (or when switching
off and on during normal operation), a relatively large amount
of emitter material can be dislodged through sputtering. In such
cases the start is sufficiently damaging, particularly when using
“cold start” ballasts, to progressively destroy the effectiveness of
the emitter and thereby shortening lamp life.
A good start will preheat the lamp cathodes so that when the
lamp starting voltage is applied, the cathodes are already
emitting electrons and the damage through loss of the emissive
material is minimised.
High frequency electronic ballasts of the preheating (warm start)
type can give a consistent and highly controlled starting regime
so that the effect of switching on lamp life is considerably less
marked than that occurring with a glow starter.
When a fluorescent lamp is operating, a small amount of the electron emissive material held on the cathodes is continually consumed, the rate of consumption increasing with higher lamp current. Additionally, when starting the lamp (or when switching off and on during normal operation), a relatively large amount of emitter material can be dislodged through sputtering. In such cases the start is sufficiently damaging, particularly when using
“cold start” ballasts, to progressively destroy the effectiveness of the emitter and thereby shortening lamp life. A good start will preheat the lamp cathodes so that when the lamp starting voltage is applied, the cathodes are already emitting electrons and the damage through loss of the emissive
material is minimised.
 
High frequency electronic ballasts of the preheating (warm start) type can give a consistent and highly controlled starting regime so that the effect of switching on lamp life is considerably less marked than that occurring with a glow starter.
 
 

Call us today- 0508 248 935

    

Electrical Workers Registration Board - Check your Electrician now     No Cowboys        Electrical-Contractors Wellington

Wellington, Broadmeadows, Churton Park, Glenside, Grenada, Grenada North, Horokiwi, Johnsonville, Khandallah, Newlands, Ohariu, Paparangi, Tawa, Takapu Valley, Woodridge, Greenacres, Redwood, Linden, Karori, Northland, Crofton Downs, Kaiwharawhara, Ngaio, Ngauranga, Makara, Makara Beach, Wadestown, Wilton, Cashmere, Chartwell, Highland Park, Rangoon Heights, Te Kainga, Brooklyn, Aro Valley, Kelburn, Mount Victoria, Oriental Bay, Te Aro, Thorndon, Highbury, Pipitea, Berhampore, Island Bay, Newtown, Vogeltown, Houghton Bay, Kingston, Mornington, Mount Cook, Owhiro Bay, Southgate, Kowhai Park, Hataitai, Lyall Bay, Kilbirnie, Miramar, Seatoun, Breaker Bay, Karaka Bays, Maupuia, Melrose, Moa Point, Rongotai, Roseneath, Strathmore: Crawford, Seatoun Bays, Seatoun Heights, Miramar Heights, Strathmore Heights, Avalon, Belmont, Boulcott, Epuni, Fairfield, Harbour View, Kelson, Manor Park, Melling, Naenae, Pomare, Stokes Valley, Taitā, Tirohanga, Wingate, Alicetown, Ava, Gracefield, Korokoro, Maungaraki, Moera, Normandale, Petone, Waiwhetū, Waterloo, Woburn, Wainuiomata, Parkway, Arakura, Glendale, Homedale, Days Bay, Eastbourne, Lowry Bay, York Bay, Mahina Bay, Muritai, Point Howard, Rona Bay, Seaview, Te Marua, Akatarawa, Rimutaka, Parkdale, Emerald Hill, Birchville, Timberlea, Brown Owl, Kaitoke, Maoribank, Ebdentown, Upper Hutt Central, Clouston Park, Mangaroa, Maymorn, Whitemans Valley, Totara Park, Kingsley Heights, Elderslea, Wallaceville, Trentham, Heretaunga, Silverstream and Pinehaven, Te Horo, Waikanae, Paraparaumu, Raumati Beach, Raumati South, Emerald Glen, Lindale, Maungakotukutuku, Otaihanga, Peka Peka, Plimmerton, Aotea, Ascot Park, Camborne, Cannons Creek, Elsdon, Golden Gate, Hongoeka Bay, Karehana Bay, Kenepuru, Linden, Mana, Onepoto, Papakowhai, Paremata, Pauatahanui, Plimmerton, Porirua East, Pukerua Bay, Ranui Heights, Takapuwahia, Titahi Bay, Waitangirua, Whitby

 

Contact Us