| ADD TO CART |
DESCRIPTION |
BALLAST
KIT |
PRICE |
EBALS003SD  |
35W High Pressure Sodium Ballast Kit, R-NPF, 120V |
23.73 |
|
EBALS005SD
|
50W High Pressure Sodium Ballast Kit, R-NPF, 120V |
28.11 |
|
EBALS50AMTD
|
50W
High Pressure Sodium Ballast Kit, 120/208/240/277V |
47.87 |
|
EBALS007SD
|
70W High Pressure Sodium Ballast Kit, 120V, with Ignitor |
23.60 |
|
EBALS70AMTD
|
70W High Pressure Sodium Ballast Kit, Quad Tap |
29.60 |
|
EBALS010SD
|
100W High Pressure Sodium Ballast Kit, 120V, with Ignitor |
26.30 |
|
EBALS100AMTD
|
100W
High Pressure Sodium Ballast Kit, Quad Tap |
31.52 |
|
EBALS015SD
|
150W
High Pressure Sodium Ballast Kit, 120V, with Ignitor |
29.70 |
|
EBALS150AMTD
|
150W
High Pressure Sodium Ballast Kit, Quad Tap |
37.60 |
|
BB-0200HPA6HC
|
200W
High Pressure Sodium Ballast Kit, Quad Tap |
62.40 |
|
EBALS025M4D
|
250W
High Pressure Sodium Ballast Kit, Quad Tap |
52.80 |
|
HPS250/CWA/480V
|
250W
High Pressure Sodium Ballast Kit, 480V |
73.64 |
|
HPS250/CWA/5-TAP
|
250W
High Pressure Sodium Ballast Kit, 5-Tap |
80.95 |
|
EBALS040M4D
|
400W
High Pressure Sodium Ballast Kit, Quad Tap |
60.00 |
|
HPS400/CWA/480V
|
400W
High Pressure Sodium Ballast Kit, 480V |
72.48 |
|
HPS400/CWA/5-TAP
|
400W
High Pressure Sodium Ballast Kit, 5-Tap |
90.21 |
|
BB-0600HPA6CC
|
600W
High Pressure Sodium Ballast Kit, Quad-Tap, CWA |
103.36 |
|
BB-1000HPA6CC
|
1000W
High Pressure Sodium Ballast Kit, Quad Tap |
111.20 |
|
HPA1000/CWA/480V
|
1000W
High Pressure Sodium Ballast Kit, 480V |
138.20 |
|
HPS1000-0005-KT
| 1000W
High Pressure Sodium Ballast Kit, CWA-HPF, 5-Tap |
187.43 |
High pressure sodium (HPS) lamps are smaller and contain additional elements such as mercury, and produce a dark pink glow when first struck, and a pinkish orange light when warmed. Some bulbs also briefly produce a pure to bluish white light in between. This is probably from the mercury glowing before the sodium is completely warmed. The sodium D-line is the main source of light from the HPS lamp, and it is extremely pressure broadened by the high sodium pressures in the lamp; hence colors of objects under them can be distinguished. This leads them to be used in areas where good color rendering is important, or desired. Thus, its new model name SON is the variant for "Sun".
High pressure sodium lamps are quite efficient—about 100 lm/W, up to 150 lm/W, when measured for photopic lighting conditions. They have been widely used for outdoor lighting such as streetlights and security lighting. Understanding the change in human color vision sensitivity from photopic to mesopic and scotopic is essential for proper planning when designing lighting for roads.
Because of the extremely high chemical activity of the high pressure sodium arc, the arc tube is typically made of translucent aluminum oxide (alumina). This construction led General Electric to use the tradename "Lucalox" for their line of high-pressure sodium lamps.
Xenon at a low pressure is used as a "starter gas" in the HPS lamp. It has the lowest thermal conductivity and lowest ionization potential of all the non-radioactive noble gases. As a noble gas, it does not interfere with the chemical reactions occurring in the operating lamp. The low thermal conductivity minimizes thermal losses in the lamp while in the operating state, and the low ionization potential causes the breakdown voltage of the gas to be relatively low in the cold state, which allows the lamp to be easily started.
