The Lighting Handbook ZG

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Vydal: ZG Lighting Czech Republic s.r.o

Strana 94 z 244







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HST-DE HST-CRI HST The most important light sources HSE . Philips colour-improved SDW produces very good quality white light and popular choice for lighting retail spaces. An ignitor generally needed start the lamp. The light therefore has yellow hue and only suitable for specific applications. The current must limited a ballast.94 The Lighting Handbook High-pressure sodium discharge lamps – High luminous efficiency and long service life – Satisfactory poor colour rendering – Yellowish light colour – Can dimmed steps – Use: industrial bays, street lighting, outdoor illumination Colour-improved (Philips SDW): – Warm, white light – Excellent colour rendering – Use: retail areas Functional description Discharge the elongated ceramic discharge tube determined sodium