Vega Light Control Systems
● Holland, Michigan 49424
1.4. Fixture Considerations
1.
Do not use a Type 3 LED Light Engine in a Refracted Globe.
Type 3
Refracted globes will effectively convert
the T5M retrofit kit into a Type 3 distribution in globes such as the Lindy Type 3 and the Granville Type 3.
2.
Do not mount LED Light Engine too high in the globe.
The LED Light Engine needs adequate air space
above it to dissipate heat. Additional air space may be needed for Tc limits as shown below.
3. The arc tube height of the previous HID system is typically the proper height for the LED mounting. This is
especially true for refracted globes to maintain the proper pattern of light to the ground and avoid excessive up
light.
4. Example Globes vs LED height settings:
✓
LexaLite Lindy 424 globe arc tube height is designed at
11.3” from the base of the globe.
✓
LexaLite
Lindy 408 globe performs best at LED height set 8” from the base of the globe.
✓
Crown 88266-CL has an optimum output when set
13” from the base of the globe.
5. Measure the maximum temperature achieved at the locations shown below after at least 2 hours under power
inside fixture. Take that temperature and add the difference between room temperature and 40C to calculate
the maximum Tc.
✓
For example: Room is 22C, Tc measured is 62C, the compensated maximum Tc is 80C
6.
When using Type 3 LED Retrofit Kits orient the LED Light Engine as shown below
LED Light Engine
Tc Point < 90
C
Osram Power Supply
Measured at marked Tc Point < 85
C
Remove power supply cover as needed to reach Tc point on power supply
Meanwell Power Supply
Tc Point < 85
C
Measured at center of label
When the arc tube
height is unknown,
place the LED height at
the center of the globe.
This LED surface is
should be installed at the
previous arc tube height.
150mm 80W LED Light Engine
120mm 30-60W LED Light Engine
Street Side
Arrow
House
Side
House
Side
Street
Side
Street
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