High pressure sodium lamps (part 4)

Osram Vialox 250w NAV-T Super (SON-T Plus) lamp

Osram Vialox 400w NAV-T SON-T lamp

Osram 400 watt NAV-T-I (SON-T-I) High Pressure Sodium Lamp with Internal Starter

Close up of Starter Element

Osram 600w SON-T-I Lamp

Osram 600 watt NAV-T Super (SON-T Plus) High Pressure Sodium Lamp

Osram (German) 1000w NAV-T SON-T lamp

Osram (UK) 1000w NAV-T SON-T lamp

Osram Vialox 70w NAV-TS Lamp