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High-Output LED Sports Floodlights for Existing Pole Retrofit

Reusing existing poles is an important consideration when upgrading sports field lighting. A well-planned LED sports lighting retrofit can replace outdated fixtures while retaining suitable pole locations and mounting infrastructure.

For retrofit projects, the LED floodlight should be selected according to the existing pole height, fixture position, required coverage, and beam angle. Photometric data and IES simulation can help determine the most suitable configuration before installation.

Why Reuse Existing Poles for LED Sports Lighting?

Existing poles can provide a useful foundation for an LED sports lighting retrofit when their structure and mounting arrangements remain suitable. Reusing the existing infrastructure can also avoid unnecessary changes to pole locations and simplify the lighting design.

However, LED sports floodlights have different optical distributions from conventional fixtures. The replacement should therefore be evaluated based on the actual lighting layout rather than simply matching the original fixture wattage.

Select the Beam Angle for the Existing Layout

Beam angle is particularly important when installing LED sports floodlights on existing poles.

The FORTOMO 41SL is available with different optical distributions, allowing the lighting design to be adapted to different field layouts and mounting conditions.

The 500W 41SL 45° configuration has a tested power of approximately 491.2W , measured flux of 75,351 lm , and a beam angle of approximately 38.6° × 42.3° . Its tested luminous efficacy is 153.45 lm/W .

The same 41SL platform also has a wider 120D optical distribution. Its test report records approximately 492W , 82,325 lm , and a beam angle of approximately 113.1° × 111.7° , with a luminous efficacy of 167.38 lm/W .

These different distributions illustrate why beam angle should be considered together with pole position and target area when selecting an LED sports floodlight.

Use IES Data Before Installation

IES files allow lighting designers to evaluate an LED sports lighting retrofit before the fixtures are installed. The photometric data can be imported into software such as DIALux or Relux to study the proposed fixture arrangement.

For example, the 45° 41SL IES report provides illuminance data at distances from 5 m to 50 m. At 10 m, the reported average illuminance within the beam-angle area is approximately 506 lx , while at 25 m it is approximately 81 lx .

The wider 120D distribution provides substantially broader coverage, with the report showing the relationship between distance, illuminated area, and average illuminance.

This information can help determine whether a narrow, medium, or wide distribution is more appropriate for the existing pole arrangement.

A Practical LED Sports Lighting Retrofit Process

When reusing existing poles, a practical retrofit process includes:

  1. Check the condition and height of the existing poles.
  2. Record fixture positions and aiming directions.
  3. Define the required illuminance and uniformity.
  4. Select the appropriate LED power and beam angle.
  5. Import the 41SL IES file into lighting simulation software.
  6. Optimize fixture positions and aiming directions.
  7. Confirm the design before installation.

The objective is to achieve the required lighting performance while making effective use of the existing infrastructure.

Conclusion

High-output LED sports floodlights can provide a practical solution for upgrading existing sports lighting systems without automatically replacing suitable poles. The key is to match the LED fixture's optical distribution to the existing pole positions and lighting requirements.

With multiple IES-tested optical distributions, the 41SL LED sports light provides flexibility for different retrofit layouts. Using IES data and lighting simulation before installation can help designers select the appropriate beam angle and develop a more effective LED sports lighting retrofit for existing poles.

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