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Discharge Lamps |
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| Components for discharge lamps |
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Electronic ballasts for HI and C-HI lamps |
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If the electrical current through a discharge lamp is increased, a discharge channel with very high luminous efficiency is created in the discharge chamber; luminous flux and light output increase substantially. |
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Electronic ballasts are fitted with all the components required to operate discharge lamps. Furthermore, they safely shut down lamps at the end of their service life to prevent high temperatures from being generated within the luminaires that could influence the service life of the luminaires and components. |
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| Assembly instructions of electronic ballasts |
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Electromagnetic ballasts for HI and HS lamps |
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Assembly instructions for mounting and installing electronic ballasts for high-pressure discharge lamps. |
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As the lamp manufacturer´s reference values regarding lamp current and voltage are generally identical for metal halide (HI) and high-pressure sodium lamps (HS) of the same lamp wattage and the impedance values required for the ballast are also identical, the same ballasts can frequently be used for both lamp types. |
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| Ballasts for HM lamps |
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Power reduction with HS and HM lamps |
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Even in the event of major mains fluctuations (94 -106 % of the rated voltage), the ballast must not fall short of the no-load voltage specified by the lamp manufacturer nor exceed a fixed short-circuit current. |
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The lamp wattage can be reduced by operating the ballast at a higher impedance value, higher than the rated value. |
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| Power reduction with switchable ballasts |
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Start-up switches |
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Example: Osram lamp, type NAV |
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As high-pressure lamps operate with a start-up phase, the lamp´s full luminous flux will only be reached after this start-up period. |
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| Assembly instructions of electromagnetic ballasts |
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Circuit diagrams for high-pressure sodium lamps (HS) and metal halide lamps (HI) |
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Assembly instructions for mounting and installing electromagnetic ballasts for high-pressure discharge lamps. |
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Circuit diagrams for high-pressure sodium lamps (HS) and metal halide lamps (HI). |
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| Lampholders for high-pressure discharge lamps |
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Bases (HI and HS lamps) |
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Metal halide and high-pressure sodium lamps feature extremely different bases, which include RX7s, Fc2, G8.5, GX10, G12, PG12, E27 and E40, depending on whether the lamp is single- or double-ended. |
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Bases for the most widely used HI and HS lamps |
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| Bases (HM lamps) |
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VS ignitors |
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Edison bases are predominantly used for mercury vapour lamps (HM) |
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The ignition voltage of HS and HI lamps is determined by the respective lamp technology as well as the creepage and air clearance distances of the base and lampholder. High-pressure sodium lamps of 70 W with an E27 base are ignited with a voltage of between 1.8 and 2.3 kV. All other high-pressure lamps of the sodium and metal halide families require an ignition voltage of between 4.0 and 5.0 kV (except for special lamps). |
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| Pulse ignition systems - overview of technical specifications |
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Assembly instructions of ignitors |
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Pulse ignition systems - overview of technical specifications. |
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Assembly instructions for mounting and installing ignitors. |
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| Lamp Table |
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Lamp Table - Discharge Lamps |
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