Clipsal Leading Edge Dimmer L5508D1A

Discussion in 'General Discussion' started by JAG C Bus, Sep 18, 2019.

  1. JAG C Bus

    JAG C Bus

    Sep 18, 2019
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    I have used the Clipsal Leading Edge Dimmer L5508D1A dimmer for a number of trailing edge and leading edge situations and had no issues with flickering or dimmer channel life has anyone else got feedback using both these scenarios thanks
    JAG C Bus, Sep 18, 2019
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  2. JAG C Bus


    Aug 3, 2004
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    The short answer to you question is yes, many installations have experienced flashing
    Though there's more to consider, these dimmers where designed to control incandescent lamps and iron core transformers.
    When electronic transformers became popular CIS in particalur the tech support and training department started seriously informing installers of the input capacitance which is a maximum of 300nf per channel and the consequences should this be exceeded, which is eventual failure.
    Then came compact fluorescent lamps and eventually LEDs both of which are low wattage and maybe high capacitance .
    Too low a wattage and an LED can glow and flash.
    So if you want to use LEDs there are many that work see elsewhere on the forum.
    There is also a load correction device (31lcda), which may help with leds glowing and flashing but if the capacitance is too high expect eventual channel failure.
    So plan carefully for the LEDs you install and be brave enough to tell your customer they can't buy any light they fancy and expect it to dim. If they do then connect the light to a relay.
    There's lots of information explaning the technicalities some I even wrote whilst working at Clipsal, the good news is the dimmers are rock solid when used within their limits including LEDs
    Wonkey, Sep 18, 2019
    DarylMc likes this.
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