Friday, May 9, 2008

Ballasts for HM lamps

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.

The start-up current must be high enough to ensure that at least 90 % of the lamp´s operating voltage is achieved within 15 minutes.

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