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  • Sensor Dimmer Module BTU Dissipation

    Originally from Engineering Notes 050 -- January 27, 1994

    Sensor Dimmer Module BTU Dissipation

    Sensor dimmer efficiency evaluation
    The following table provides information on the thermal efficiency of ETC Sensor dimmer racks. All dimmer efficiencies are measured at maximum current (full load). Note that the watt and some BTU figures shown below apply to single dimmers, not dimmer modules and a module often contains more than one dimmer.

    Module Type
    per Dimmer
    Full Load in Watts
    per Dimmer
    Watts Dissipated
    per Dimmer
    BTUs Dissipated
    Dimmer Efficiency
    per Module
    BTUs Dissipated
    D15
    1,800
    56
    191.072
    96.9%
    382.144
    D15AF, D15E
    1,800
    70
    238.84
    96.1%
    477.68
    D20
    2,400
    77
    262.724
    96.8%
    525.448
    D20AF, D20E
    2,400
    119
    406.028
    95.1%
    812.056
    D20HR
    2,400
    259
    883.708
    89.2%
    883.708
    D50AF
    6,000
    237
    808.644
    96.1%
    808.644
    D50HR
    6,000
    543
    1,852.716
    90.9%
    1,852.716
    D100AF
    12,000
    446
    1,521.752
    96.3%
    1,521.752

    Although Sensor dimmers are designed to operate safely in environments with ambient temperatures of up to 104°F (40°C), as with all electronic equipment, keeping the operating environment at cooler temperatures will help improve the service life of the equipment. In order to maximize the efficiency of your dimming system, dimmer room air conditioning should maintain an ambient dimmer room temperature of 68°F (20°C) or less.

    IMPORTANT NOTE: When calculating air conditioning requirements, keep in mind that the BTU outputs cited in the table above are maximums. The heat actually dissipated may be less. Factors that influence actual heat dissipation include service ampacity, as well as how the dimmers are used and typical loads.