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Difference between revisions of "Philips HPI Plus"
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*Requires matching mercury vapour or high pressure sodium ballast (Plus designation) | *Requires matching mercury vapour or high pressure sodium ballast (Plus designation) | ||
*Requires ignitors except on "S" designated 250W and 400W lamps | *Requires ignitors except on "S" designated 250W and 400W lamps | ||
*Color rendering index Ra of 69 | *Color rendering index Ra of 65 (most HPI-T lamps) and 69 (all HPI Plus lamps) | ||
*Typical lifetime of 20.000 hours | *Typical lifetime of 20.000 hours | ||
*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) | ||