Installation Instructions - Clipsal

Intelligent Building SeriesC-Bus 12 Channel Professional Architectural Dimmer Installation Instructions5.0 Getting Started5.1 Compatible LoadsThe C-Bus 12 Channel Professional Architectural Dimmers are capable ofdimming several categories of lighting loads.• Resistive loads, eg. Incandescent and tungsten halogen lamps.• Inductive loads, eg. Iron core transformers for LV lighting, ceiling fans.• Electronic loads compatible with phase control, eg. Electronictransformers for LV lighting, some electronic ballasts for fluorescentlighting and discharge lamps.5.1.1 Inductive-Input Electronic Transformers – Full Load RatingElectronic transformers for LV lighting incorporating an input seriesinductor (eg. ATCO TEC series electronic transformer) are most suitablefor phase control dimming due to the inductive load presented to thedimmer unit.The full load rating of the 12 Channel Professional Architectural Dimmersapplies when using these types of electronic transformers and also ironcore transformers.5.1.2 Capacitive-Input Electronic Transformers – Limited Load RatingElectronic transformers for LV lighting without an inbuilt series inputinductor (eg. OSRAM HTM series electronic transformer) are lesspreferred for phase control dimming due to the capacitive loadingpresented to the dimmer unit.The maximum quantity of low-voltage lighting that can be controller withthese types of electronic transformers is determined by the capacitance ofthe transformers. The unit must not be loaded with more than 5nF forevery Watt of total channel load. The total load for these types oftransformers must not exceed 10A per channel.Note: Exceeding the loading limit for this type of electronic transformermay result in excessive EMI emissions or cause damage to the dimmerunit channel.Load TypeResistive andIncandescentInductive (e.g.Transformers, ACMotors)Capacitive (e.g.Electronic Low VoltageTransformers)Minimum loading150 Watts150 Watts150 Watts© Copyright 2003 Clipsal Integrated Systems Pty Ltd. Page 8