The Lighting Handbook ZG

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Vydal: ZG Lighting Czech Republic s.r.o

Strana 204 z 244







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204 The Lighting Handbook Working mode/ shift type Switch-on period Days use/year Hours/day Daylight-based control Burning hours per lamp and year in hours 24-h shift working, Process monitoring/ control 365 365 24 h 24 h No Yes 8760 h 7300 h Double shift, 6 days/week 310 310 16 h 16 h No Yes 4960 h 3720 h Single shift, 6 days/week 310 310 10 h 10 h No Yes 3100 h 1760 h Single shift, 5 days/week 258 258 10 h 10 h No Yes 2580 h 1550 h Daylight-based control: the lamps switch automatically when there too little daylight available. From CIE publication “Maintenance indoor electric lighting systems”, dated 2005 Table burning hours Maintenance lighting systems . Data based the assumption that there sufficient available daylight for half the year