150 Watts HP Sodium Lamp
3,178 views · Published 3 December 2013 · 4:14 · Indexed 1 November 2026
Channel: RODALCO2007 · 2013 · Science & Technology
This HP Sodium lamp was connected to a 11 kV VT. ( Ex streetlight ) Voltage controlled via Variac to VT The current was kept limited to observe what happens within the discharge tube. Normal running current would be about 240 V 0.7 Amps after striking. An 11 kV 110 Volts VT was used ballasted with 4.6 kW resistive load. A Voltage of about 7.5 kV at 35 mA was flowing through the tube, at striking reducing to a few hundred Volts at 100 mA.. Interesting to see the blue hue prior to discharging to Orange. Primary current was 75 Volts at 3 Ampères Electricity If the lamp was run at full brightness the contrast would completely disappear.
