Existing 12V : 50w Halo conversion to 12V : 7.5 LED lamps...

[Engineer54]

Not having done much in the way of conversions of this type, i'd be obliged if any you out there can confirm or otherwise, that standard 12V 60VA TX's are not suitable to drive low wattage LED lamps.

I've been asked by a new friend here, if his shop light fittings that consist of 4 X 50W halo lamps can have direct replacement of 7.5W LED lamps. I'm pretty sure that these low wattage LEDs don't like the standard wound TXs and require electronic units. ...So what say you?? lol!!

He has around 20 of these recessed fittings to convert. So it could be a substantial savings for him, as his current lighting load of these fittings are running at around 4 KWh!!

Apart from my initial query, if these LED lamps do require one of these electronic units, are they available to drive 4 X LED lamps? What sort of price would these voltage/current based units cost in the UK, just as a comparison, as i'm pretty sure they are going to be much much cheaper here.

 

[needasparks]

These are the ones i tried and cost was about £25 but can't remember the cost of driver per light unit.

Megaman - Energy Saving Light Bulbs, Luminaires and FOZZ Energy Saving Lighting

 

[nickblake]

Use fewer transformers just parallel the fittings this should increase the load so the transformer will work i have done it in the past successfully if my memory serves me right it was 6 i wired light output wasnt very successfull but it was a while ago things have changed a tad

having said that id replace them all with halers cost a bit but 20,000 hour lamp life 7 year warrenty great light output cant go wrong

 

[Engineer54]

Sorry Eng54, did not quite get that. You tried them on the wire wound job or used a new dc driver ?

On the wire wound original incorporated TX's ...one for each lamp. No DC driver tried!!

 

[Engineer54]

These are the ones i tried and cost was about £25 but can't remember the cost of driver per light unit.

Megaman - Energy Saving Light Bulbs, Luminaires and FOZZ Energy Saving Lighting

No doesn't look like the ones i fitted... no heat sink looking body to them...

 

[Engineer54]

Use fewer transformers just parallel the fittings this should increase the load so the transformer will work i have done it in the past successfully if my memory serves me right it was 6 i wired light output wasnt very successfull but it was a while ago things have changed a tad

having said that id replace them all with halers cost a bit but 20,000 hour lamp life 7 year warrenty great light output cant go wrong

They all work , just not to the standard i was expecting!! You think paralleing the lamps on to one TX will improve the light output??

 

[needasparks]

The light out was much better than i expected and not that much different, slightly narrower beam though like you expect with LED and the client liked the colour but i did use the proper driver which did the 4 lamps. Its just a shame about the fins clashing on his fittings but may work better on yours.

 

[Engineer54]

The light out was much better than i expected and not that much different, slightly narrower beam though like you expect with LED and the client liked the colour but i did use the proper driver which did the 4 lamps. Its just a shame about the fins clashing on his fittings but may work better on yours.

Ah, .... but yours were 11W, ...perhaps that's what the LED replacement needs, 11W's of LED power... lol!!

 

[nickblake]

Sorry eng 54 i mis read your post didnt think they were working i doubt they would be brighter ive always been disapointed with led lamps , well till i found the halers , having said that some of the 11 watt ones on ebay that i have bought were what id class a reasonable