Bthree wrote:,........., LED lights have really come of age and I am certainly happy with the current offerings, ......
Beginner wrote:.......Supposing I saved 1 kW of electrical power through the use of single phase/240V LED lamps, will I also saved 1kW of power at the MV side where the electrical metering is done?.........
Graeme.Ambrose wrote:there is an excellent article on the subject. It can be downloaded here:
As highlighted in Picture 3; an unmodified troffer with LED or T5 retrofit tubes installed can have a power factor (pf) of ~0.25, which means that 25% of the total power drawn through the electrical circuit is used for “real work”. The other ~75% is due to increased inefficiencies, introduced by the retrofit tubes, within the electrical load that restricts the 100% conversion of total power drawn (Apparent Power) into electrical work achieved (Real Power).
Even though the wattage has reduced by 56%, the current (A) has increased by 53% compared to the original 2 x 36W Fluorescent tube troffer.
Patricia wrote:It is quite expensive, so what I thought I would do, and to keep the peace with my electrician, would be to try the tape on just one beam for the time being. Now the electrician talks of channels, drivers, transformers, dimmers so I need some independent advice PLEASE.
Users browsing this forum: No registered users and 2 guests