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Ordering
Code

Bulb

SOX-E 18

T-17

SOX 35

T-17

SOX 55

T-17

SOX 90

T-21

SOX 135

T-21

SOX 180

T-21

Max. Diameter (B)

In.

mm

1

8

54

1

8

54

1

8

54

11

16

68

11

16

68

11

16

68

MOL

1

(A)

In.

mm

1

2

216

12 

3

16

310

16 

3

4

425

20 

3

4

528

30 

1

2

775

44 

1

8

1120

Physical Dimensions

—SOX-E and SOX Lamps

Low Pressure Sodium Lamp Construction

LCL

2

(C)

In.

mm

1

2

141

1

4

184

1

2

243

11 

1

2

292

16 

3

8

416

23

584

Light Length (D)

In.

mm

5

8

92

1

2

192

12

305

7

8

403

25 

7

16

646

38

965

1. MOL = Maximum Overall Length
2. LCL = Light Center Length
Base: Double Contact Bayonet-Medium (BY-22d)

A

B

C

D

1

7

2

5

3

4

6

8

1. Non-Metallic-Bayonet Base

will not corrode or stick in lamp

socket, providing quick, safe relamping. Locking pins on lamp base
assure the lamp locks in socket and cannot vibrate loose. SOX-E
lamps are distinguished by the use of the black bases compared
to the tan bases used on SOX lamps.

2. Sodium Retaining Reservoirs

provide even distribution of

sodium for 100% lumen maintenance, long lamp life and lamp
wattage control.

3. U-Bend Insulation Feature

controls lamp wattage rise and

helps provide more consistent lamp life.

4. Rough Service Arc Tube Support System

eliminates arc

tube movement along lamp axis yet allows radial arc tube flex.
It provides highest protection from shock and vibration.

5. Uniform Indium Oxide Heat Reflecting Coating

creates

highest luminous efficacy of all light sources and contributes to 100%
lumen maintenance by keeping arc tube at the optimum temperature.

6. Barium Getter

absorbs trace gases to properly maintain correct

arc tube temperature and maximize light output.

7.Triple Coil Electrode

with full tungsten support holds more

emission paste for superior life.Tungsten supports prevent
electrode vibration keeping emissive paste on the electrode.

8. Fuse Coil

in lamp base provides additional protection to ballast.

By preventing D.C. currents that may occur at end of lamp life,
ballast currents are lower, ballast temperatures are lower and
ballast life is longer.

Summary of Contents for SOX

Page 1: ...lighting Excellent Energy Efficiency Up to 180 lumens per watt Long Life 18 000 hours rated average life Vibration Resistant Rough service arc tube support system provides protection against shock and vibration Low Pressure Sodium Lamps SOX E SOX High energy efficiency low pressure sodium lamps for indoor and outdoor applications ...

Page 2: ...delas per 1000 lumens Percent 90 0 2 4 6 8 10 12 14 16 95 100 105 110 Percent of Nominal 220 200 180 160 140 120 100 80 60 40 20 0 Minutes Warm upTime Percent of LineVolts 150 140 130 120 110 100 90 80 70 60 50 LOW PRESSURE SODIUM LAMPS SOX E AND SOX Warm Up Characteristics Effects of InputVoltageVariations LampVolts Lamp Current LampWatts Light Output LampVolts Lamp Current LampWatts Light Output...

Page 3: ...dium Retaining Reservoirs provide even distribution of sodium for 100 lumen maintenance long lamp life and lamp wattage control 3 U Bend Insulation Feature controls lamp wattage rise and helps provide more consistent lamp life 4 Rough Service Arc Tube Support System eliminates arc tube movement along lamp axis yet allows radial arc tube flex It provides highest protection from shock and vibration ...

Page 4: ...18000 9 32799 9 SOX 180 L74 SOX 180 180 220 32000 240 0 91 0 91 18000 9 Light Output Over Life 100 Base Temperature Limit 150º C Bulb Temperature Limit 150º C Lamp Brightness SOX 10 cd cm2 SOX E 18 SOX 35 SOX 55 SOX 90 SOX 135 SOX 180 Philips Lighting Company 200 Franklin Square Drive P O Box 6800 Somerset NJ 08875 6800 1 800 555 0050 www lighting philips com nam A Division of Philips Electronics ...

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