Plant Services - September 2007 - (Page 61) Performance Lighting See in the dark Typical fluorescent high bay Occupancy/ photo sensor made Increase the value of your data, and you’ve got It Fluorescent task luminaire One four-lamp and one two-lamp emergency ballast Inspection table area Figure 1. Quality inspection station using T5HO fluorescent luminaires for horizontal and vertical task illumination. Adjustable suspension allows for quick response to production changes or lighting requirements. restrike instantly when energized. Battery ballasts can be provided for life safety without the need for separate dedicated emergency luminaires. As mentioned earlier, dimming and switching options for fluorescent highbays are vastly greater than for HID or HPS sources. An option for a task area might include a six-lamp high bay with an occupancy sensor-driven fourlamp ballast and an emergency battery ballast for the two remaining lamps. This permits multi-level switching of 33%, 66% and 100%, with automatic shutoff of four lamps when the area is unoccupied, yet still ensure that the area is never in total darkness if power is interrupted (Figure 1). A scalable or modular approach to lighting permits flexibility as your needs evolve. Modular wiring permits luminaires to be added, relocated and serviced with a minimum of labor and downtime. Hook hangars with quickdisconnect modular cordsets permit a fixture to be installed or relocated quickly. A failed luminaire can be exchanged at bench level rather than in a lift basket. Simple splitters and extensions permit changes to lighting density as plant needs change. Modular systems are available for industrial and wet environments as well. There might be tax benefits related to a modular wiring system because portable wiring can be depreciated at a faster rate than the Here comes the sun building infrastructure. Distribution box – Modular Modular by electrical of control is important Daylighting is making a comeback at cable Flexibilitycontractor tee extension an increasing rate. Proper daylightif future needs require varying task ing provides significant illumination illumination. The ideal control arduring peak demand periods. A good rangement features digital addressing design manages UV penetration, confor each luminaire and control device. trols glare and adjusts artificial light to DALI openModular protocol is one option pigtail the available natural light. This saves that permits as many as 64 devices Typical energy and improves worker perforto be managed discretely within a fluorescent Typical hid mance. Because of high bay of labor, the value control group. Luminaires can be on PC high bay control Class II digital because dimeven an increase in productivity of the same load branch, Typical Occupancy/ control wire as little as 1%sensor quickly offset the ming and switching are performed fluorescent photo can high bay cost of a daylighting installation. Envia Class II low-voltage wiring. In a sure that daylight penetration doesn’t DALI arrangement, the control wirresult in excessive glare, reflection or ing can be daisy-chained between heat gain. luminaires and controls, in whatever September 2007 www.PLANTSERVICES.com Illuminating the future With Syclo’s SMART Suite of mobile products, you and your team have the information you need to make smarter decisions. • Improve the timeliness and accuracy of data • View and use information at the point of service • Respond to critical needs as your team discovers them • Ensure regulatory compliance with accurate reporting www.syclo.com 61 http://www.syclo.com http://www.PLANTSERVICES.com
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