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LED Transformer Issue

Adrian
I have recently installed a 30 meter 24v LED Strip Lighting System powered by x1 150W power supply and x320W power supply - all parts have been supplied by Maxilux Ltd.. During installation the two power supplies were temporarily connected to the mains 240v ac via a cord and 3 amp fused plug in to a wall socket. All worked okay.


A dedicated light junction box and light switch was then installed in the downstairs light circuit. As a precaution a switched fuse spur box with 3amp fuse was installed in the switched line between the light junction box and two power supplies. The light switch purpose is primarily to turn 'on' and 'off' the two power supplies - the 320W has an internal fan that would otherwise run at all times even when the 24v LED Strip Lighting is not in use. A battery powered remote can also turn the 24v LED Strip Lighting 'on' and 'off', dim and change the colour from warm to cool white - provided that the light switch is 'on' 


When the light switch was first operated the 6amp consumer unit MCB tripped. However, if the 6amp consumer unit MCB was quickly reset and light switch operated again, the two power supplies turned 'on' okay and the 24v LED Strip Lighting worked okay. The lights could be turned 'on' and 'off' okay many times using the light switch. If left 'off' for circa 30 minutes, then light switch operated to 'on' the 6amp consumer unit MCB would once again trip.

After much searching of the Internet the problem was resolved by replacing the 6amp 'B' consumer unit MCB with a 6amp 'C' consumer unit MCB from the same manufacturer. The problem went away and for several weeks it has been possible to turn 'on' and 'off' the lights using the light switch and remote without the 6amp MCB tripping. 


This evening, the light switch was turned 'on' and the 24v LED Strip Lighting worked okay. However, when the light switch was operated to turn the lights 'off', the 24v LED Strip Lighting remained 'on'. The switch does not feel right - it is not fully returning the 'off' position; I suspect the contacts have welded closed in the 'on' position. 

There are no burning smells, nothing is getting warm or hot etc. The 6amp 'C; consumer unit MCB has not tripped. Fortunately, the switched fuse spur box with 3amp fuse has allowed the 24v LED Srtip Lighting to be turned off.


Any advise please 1) what is happening, 2) how I can resolve this issue. Thank you in advance.

Parents
  • 0
    24-Watt-CCT-LED-Tape-datasheet.pdf

    Thank you all again for your helpful responses. RE: LED wattage and length of run etc. please find attached data sheet of the LED tape.

    There are 30 meters installed; the LED tape runs along both upper and lower edges of a special light blocking coveing to provide a thin strip of illumination up on to the ceiling, and another down on to the wall, hence the 30 meters. It is also a largish room. The LEDs are of the white variety that can be changed from warm to cool and dimmed. The tape is 24W per meter = 720W total. Yes, possibly some serious illumination? 

    Being dark evenings and tendency for some residents to leave their blinds/ curtains open, I have seen a number of homes locally with LED lighting similar to mine, and in bigger homes with bigger rooms, thus I assume it must be possible to get my system to work safely and reliably. 

    So short list of options apears

    Add in series impedance

    Use an AX rated light switch - 20AX ?

    Use 20A double pole switch - wiring to one half?

    At the risk of trying each until it works, is there a clear winner here, or order in which I should try? Wife is keen the lights are fully working in run up to Christmas, thus I do not want to be forever 'saying tomorrow I this will be tried...'

    Thank you again for your continued responses, appreciated

Reply
  • 0
    24-Watt-CCT-LED-Tape-datasheet.pdf

    Thank you all again for your helpful responses. RE: LED wattage and length of run etc. please find attached data sheet of the LED tape.

    There are 30 meters installed; the LED tape runs along both upper and lower edges of a special light blocking coveing to provide a thin strip of illumination up on to the ceiling, and another down on to the wall, hence the 30 meters. It is also a largish room. The LEDs are of the white variety that can be changed from warm to cool and dimmed. The tape is 24W per meter = 720W total. Yes, possibly some serious illumination? 

    Being dark evenings and tendency for some residents to leave their blinds/ curtains open, I have seen a number of homes locally with LED lighting similar to mine, and in bigger homes with bigger rooms, thus I assume it must be possible to get my system to work safely and reliably. 

    So short list of options apears

    Add in series impedance

    Use an AX rated light switch - 20AX ?

    Use 20A double pole switch - wiring to one half?

    At the risk of trying each until it works, is there a clear winner here, or order in which I should try? Wife is keen the lights are fully working in run up to Christmas, thus I do not want to be forever 'saying tomorrow I this will be tried...'

    Thank you again for your continued responses, appreciated

Children
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