Discuss Nearby motors damaging LED floodlights in the Electrical Forum area at ElectriciansForums.net

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I do some electrical maintenance for a local church, the main hall is lit by around 12 LED floodlights, (they do look cheap) they seem to be constantly dying, they have asked if a wood work shop across the road could be causing this, with saws and other machinery constantly starting up, I’ve suggested getting a surge protective device to be installed but I can only see that protecting against very high spikes in voltage such as lightning strikes etc.

I know induced currents can cause surges but would it be likely they would damage the LEDs? I think they should probably pay to have replaceable LED lamp lights rather than led chip floodlights
 
B

Bobster

Very doubtful. Likely just cheap fittings.

You could set a voltage monitor up, record for a week.
 

marconi

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LED lamps are less reliable because they have more components which can fail randomly or by some form of excess eg; voltage, current, temperature. That's why the 'better quality' ones may be more reliable because they use components with higher individual mean time between failures (MTBF) - but the life will generally still be less than promised.

The electronics are sensitive to overvoltage and some LED do have some in-built suppression. Over-voltage of long duration causes them to burn brighter (ie higher current and Ohmic heating) and of short duration causes component failure or premature weakening and ageing.

I'd be tempted to fit a voltage surge suppressor in the supply to the array of LED lamps, to protect against transient spikes in mains voltage and reduce the effect of nearby lightning, such as:


If they are dimmable types, I'd also switch them on using a soft-start dimmer with a rotate to switch on/off (not push on/off) to lessen the electrical shock of a conventional switch energisation eg:

 

PEG

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....Anybody else spot the irony,of a Church trying to blame the carpenters,across the road?....:rage:
 

richy3333

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I immediately just thought God moves in mysterious ways but like Pegs comment better :D
 
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