| 摘要 |
<p>A dimmer rack (10) for mounting a plurality of modular units called dimmer modules (14) is disclosed. Each of the modules is used to provide dimming control for each lighting circuit in a lighting system. The rack is a vertical enclosure and utilizes a plurality of modular shelving elements (78) attached to the sides of each file to define individual receptacles for each module. Tabs (60) in a shelving register with grooves or slots (160) on the external housing of the dimmer modules, whereby precise tongue and groove mounting of each dimmer module is obtained. The rack provides vertical input power and control signal busses (30,32) which are mounted side by side at the rear of the rack which register with and are engaged by first mating connectors (230,232) on the rear of each of the dimmer modules at one end thereof. A vertical output power bus (40) is provided at the rear of the rack on the side opposite the power and control signal busses which registers with and engages other mating connectors (240) on the rear of the dimmer modules at the end opposite the first connectors. A vertical neutral bus strip (50) is mounted adjacent the output power bus (40) to provide a return wire connection point for each lighting circuit. Where three phase power is supplied to the rack, the dimmer modules are grouped vertically by phase, one below the other. This permits quick and efficient rack to rack bussing.</p> |
