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Difference between revisions of "Philips HPI Plus"
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*Luminous efficacy of 72 to 85 lumens/watt (highest on HPI-T lamps) | *Luminous efficacy of 72 to 85 lumens/watt (highest on HPI-T lamps) | ||
*Cool white or daylight colour designation (4500 or 6700 K colour temperature) | *Cool white or daylight colour designation (4500 or 6700 K colour temperature) | ||
* | *One of the following (risk of early failure when operating in other positions): | ||
**Vertical operating position (most HPI Plus lamps) | |||
or | |||
**Horizontal operating position (all HPI-T lamps) | |||
== Lamp control gear == | == Lamp control gear == | ||