Svetlobni tok (lm): 600 Premer d (mm): 62 Dolžina l max. (mm): 69High-voltage krypton lamps are used in systems that comply with DIN 67527, Part 1, and EN 12368. The majority of road traffic light installations are still operated on a voltage of 220 to 240 V.For these systems, special lamps have been developed which meet the high requirements demanded of the signal optics. High-voltage signal lamps are designed for an Srednja življenska doba of 8000 hours. However, this is in no way an indication of its useful service life. The yardstick for useful service life is the individual lamp life or premature failure rate.In the case of high-voltage signal lamps, the failure rate in the first 3000 hours of operation is no more than 2%. The premature failure rate is restricted to cases that are due to lamp faults and not to external influences. This allows maintenance intervals of around 4 months (depending on the system). The krypton inert-gas lamps conform to the specifications of DIN 49 842, Parts 2 and 3. This means that in modern signal lights the Intenzivnost osvetlitve values laid down in DIN 67 527 Part 1 and DIN EN 12368 are met. The provisions of TL 54-981-00 apply.The advantages of high-voltage krypton lamps are as follows:Excellent optical efficiency thanks to a small cradle PremerHigh luminous efficacy from krypton as the filler gasHigh resistance to shock and vibrations thanks to the nine supports for the filamentCorrosion-resistant bases Only the permissible burning positions may be used otherwise the lamp will fail prematurely. The abbreviations indicate the main burning position and the permitted angle in degrees.Main burning positions: s = standing (vertical), base down