Satco Products HID Lamps User Manual

HID Lamps

HID Basics

Visible Light

HOW IT WORKS

The operational concept behind HID lamps is very similar to that of fluorescent lamps. Electrodes are positioned at either end of a tube, whose chamber is filled with gas and metals such as mercury. An electrical charge passes from one electrode to the other. In fluorescent lamps, this charge creates ultraviolet (UV) light, which converts to visible light once it passes through the phosphors on the tube’s interior.

In an HID lamp, the electrical arc, gasses and metals are contained in what is known as the arc tube. The arc tube is made from either quartz (used in mercury vapor and metal halide lamps) or transparent ceramic (used in high-pressure sodium lamps because of their high temperature). All arc tubes are housed within a larger outer glass envelope.

Unlike fluorescent lamps, the arc tube of HID lamps is filled with gas at a very high rate of pressure (up to 50 psi). This allows the electrical arc created by the electrodes to operate in the visible part of the spectrum, producing usable light without the addition of phosphors.

Like fluorescents, HID lamps require a ballast to control the electrical current in the arc tube. Certain HID lamps also require an ignitor, which produces a high voltage to pulse the arc tube, allowing the arc to strike.

The biggest difference in HID lamps is the fact that they need a start-up time to reach their full brightness. This usually takes five to 10 minutes, during which time the lamp will flicker until the metal inside fully vaporizes and the lamp reaches is full operating temperature.

Electrode

Arc Tube Filled with

Gasses &

Metals

Starting Electrode (Probe)

New HID lamps require a “burn in” period of approximately 100 hours before the lamp will reach its true specified color. Until this process is completed, lamps can be unstable and vary in color.

As HID lamps age, chemical changes occur that cause color shifting. The shifts vary depending

FACT:

HID lamp color is rated in kelvins and is reffered to as its Correlated Color Temperature (CCT).

FACT:

Colors are created by using different arc tube designs and changing the mixture of chemicals within the tube.

on the lamp type. Standard probe start lamps tend to shift color about twice as much as pulse start lamps. Results vary from lamp to lamp.

It is recommended to conduct a group relamping once it is determined that a lamp or group of lamps is changing color or failing. This way, the area being illuminated will maintain an even balance of color and light.

Burning Positions

Vertical BU-HOR

105º

Universal

Vertical

BD-ONLY

15º 15º

Horizontal

HOR

15º

Certain HID lamps have been designed to operate in a specific position to achieve targeted life or performance goals. These examples illustrate these burning positions

Vertical

BU-ONLY

15º

Double Ended

HOR

15º

4º

Major HID Categories

Mercury Vapor

The original of the three HID categories operates by using a small amount of liquid mercury sealed in a quartz tube with argon gas. The arc created by the mercury vapor lamp produces both visible and invisible (UV) light. The visible light is blue-white in color and is best suited for outdoor lighting applications because of its poor color rendering capabilities. Some mercury vapor lamps incorporate phosphors similar to those used in fluorescent lamps to improve color to a certain degree. Mercury vapor lamps can achieve life spans of 10,000 to 24,000 hours.

Typical applications: Street lighting, industrial hi-bay, parking lots, building flood lighting, general flood lighting, places where long life is required and color rendering is not critical.

Spacer

End Paint

Envelope

BT37

Arc Tube

Electrode

Upper Support

Arc Tube Strap

Return Lead

Connector Lead

Frame

Arc Tube

Electrode

Starting

Electrode

(Probe)

Starting Resistor

Stem

Base

Metal Halide

Metal halide lamps are similar to

mercury vapor models except

for the addition of metal

halides of sodium iodide and

scandium iodide. Certain

metal halide lamps feature

other iodides to improve the efficiency and color balance of the lamp. Metal halide represents the most popular

and widely used HID category.

Typical applications:

General lighting such as

commercial/industrial/outdoor

flood lighting where good color

and high efficiency are desired.

Envelope BT28

Open Fixture Applications

Open

Fixture

Medium Base

Lamp

The narrower EDX17 neck allows full insertion into the socket

Mogul Base

The extended

EX26 Socket

center contact completes the circuit in the socket.

EX39 Socket

Open fixture rated bulbs have dedicated lamp

bases that will only fit and work with fixtures

that have corresponding sockets.

There is a series of HID lamps that has a protective glass shroud around the arc tube that acts as a barrier to block any particles from exiting the lamp’s outer bulb.

Dome Mount Support

Hermetic

End Seal

Alumina Arc Tube

Enclosed

Fixture

Lamp

Since the arc tube of the HID lamp is a highly pressurized environment, it is mandatory that the fixture that houses the lamp have a protective lens. This lens will contain glass fragments or other hot particles should the arc tube experience a failure.

The wider bulb neck will not fit past the ceramic neck of the socket.

The standard center contact won’t reach the contact in the dedicated socket.

Lower

Support

Stem

Base

Steel

Frame

High Pressure Sodium/

Low Pressure Sodium (SOX)

This series of HID lamps incorporates solid sodium, mercury and xenon or a neon/argon gas mixture within the arc tube. This combination of metals and gasses produces an orange-white light in the high-pressure version and a yellow light in the low-pressure model. Both lamps boast a luminous efficiency that is much greater than its mercury vapor or metal halide counterparts.

Typical applications:

Street lighting, industrial hi-bay, parking lots, building flood lighting and general area lighting.

Weather Resistant ET18 Envelope

Vacuum

Residue Gas Getter

Base

HID Lamps

T4 SE G8.5

T6 SE G12

PAR20 Med.

PAR30L Med.

Metal Halide Lamps 39w - 70w

Nominal Watts Bulb Base

T4 SE G8.5 S4286SCDM35/TC/830

T6 SE G12 S4288SCDM35/T6/830

PAR20 Med S4284SCDM35PAR20/M/SP

PAR30L

Med S4876SCDM35PAR30L/M/SP

ED17 Med S4854MH50W/U/MED/PS

EDX17

Med S4846MP50W/U/MED/PS/3K

Satco

Product

Number

S4285

S4877

S4855

S4847

Lamp Code

CDM35PAR20/M/FL

CDM35PAR30L/M/FL

MH50W/C/U/MED/PS



MP50W/C/U/MED/PS/3K



Coated

ED17 Med.

Pulse

Finish

Clear Y N

Clear Y Y

Clear Y N

Clear Y Y

Open

Start

Rated

EDX17 Med.

Code

M130/E

M130/O

M110/E

M110/O

ANSI

ED28 Mog.

Kelvin Temp

3000 81 3300 Univ.

3000 81 3400 Univ.

3000 81

3000 81 5000* Univ.

3000 81

3000 81 7400* Univ.

4000 65 3400 Univ.

3700 70 3400 Univ.

3200 65 3400 Univ.

3000 70 3300 Univ.

CRI

T6 DE RSC

Initial

Lumens/

CBCP*

23000*

44000*

Buring

Position

Univ.

Avg. Rated Hours

MOL

9000

3 11/32”

12000

3 5/16”

9000 3 3/4”

9000 4 3/4”

10000

5 7/16”

10000

5 7/16”

10000

5 7/16”

10000

5 7/16”

Ctn

HID lamps

ED17 Med S4856MH70/U/MED

S4857



EDX17

Med S4848MP70/U/MED

S4849



Mog S4230MH70W/U/ED28/PS Clear Y N

ED28

T4 SE

G8.5 S4287SCDM70/TC/830

T6 SE G12 S4289SCDM70/T6/830

S4264

T6 DE RSC S4865



S4292SCDM70/TD/830

S4864



S4265

MH70/C/U/MED

MP70/C/U/MED

CDM70T6/942

MH-DE70/3K

MH-DE70/4K

CDM70/TD/942

Visit our website at www.satco.com

Clear Y N

Coated

Clear Y Y

Clear Y N

M98/E

M98/O

M98/E

M139/E

M85/E

M85/M139/E

M85/E

M85/M139/E

4000 65 5600 Univ.

3700 70 5300 Univ.

4000 65 5600 Univ.

3700 70 5300 Univ.

4000 65 5600 Univ.

3000 83 6400 Univ.

3000 81 6600 Univ.

4200 92 6600 Univ.

3000 70 5200 HOR+-15

3000 82 6500 HOR+-15

4200 65 5500 HOR+-15

4200 92 6000 HOR+-15

15000

6000

12000

10000

15000

10000

15000

5 7/16”

8 5/16”

3 11/32”

3 5/16”

4 9/16”

4 11/16”

4 9/16”

4 11/16”

109

+ 11 hidden pages

Satco Products HID Lamps User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

HID Lamps