While the Hearts contract was Gary’s first major lighting project for a football club, he is not finished with floodlights quite yet. SPIE UK, as part of its schools FM contract, will be partnering again with Signify to replace the

lighting at a number of school football pitches around Scotland. Gary said: “As part of

this contract we will be replacing the school football pitch lights in the same vein as we did at Hearts but obviously not to the same magnitude.

stanchions at each corner of the pitch. These 14 luminaires are arranged in two rows of four, plus three rows of two, and conform with Scottish FA 800 lux Eh Gold criteria. There is extra space available on each headframe for more lux to be added at a future date to increase the level to UEFA Level B criteria.

The new Philips LED floodlights will

give Hearts a big reduction in running costs and provide a much more efficient system, which should save the club more than 34,000 kilos of CO2e each year, resulting in an energy saving of circa 78%, as the original 56 halogen lamps in each of the four floodlight arrays have now been replaced with just 14 long-life Philips ArenaVision LED luminaires. Describing his role on the project,

Gary said: “Although I’m designated as a Design Manager, I’m an electrician by trade so my role early on in the contract was to liaise with Signify to

develop a system to ensure the new floodlight installation was compliant with Scottish FA floodlight regulations and UEFA regulations for potential European games in the future.” The floodlight array headframes have been retained on the existing floodlight support stanchions, so Gary’s team was responsible for the installation of the new Philips light fittings with their associated drivers; the drivers providing a regulating buffer between the current source and the high output lamps, making them less vulnerable to electrical overload. In addition to the installation of the lights, the team also took the opportunity to re-engineer the power and wiring infrastructure for the floodlights as Gary explained: “Hearts originally had a low-level power unit in each of the floodlight support stanchions, which contained all remote- control gear. We decided to change the strategy because it was more efficient to have the distribution board at a higher level and feeding into the fittings locally as opposed to running loads of separate circuits up the side of the stanchion as they had previously done. “So we have installed new distribution boards up on the top gantry of the stanchion local to the floodlights, some 60 feet above the ground, which then

“Owing to the high voltage load on the lamps, we decided to only put three lamps on a single circuit”

“Te school floodlights

comprise around 12 light fittings per stanchion to produce around 200 lux of illumination for football, but for those pitches which are also used for hockey they will require a higher level of illumination.”

David and Tom inspect the stadium’s floodlights

feed into the new light fittings. Owing to the high voltage load on the lamps, we decided to only put three lamps on a single circuit. “We’ve installed four-way TP&N 100A

distribution boards in each stanchion, which essentially means you have 12 circuits, so we have three light fittings per circuit at 32A per supply. We also installed remote switching in the ground’s control room to provide 50% and 100% power options. “The previous 56 halogen lights per floodlight array used to fill most of the

Continued on page 19 >>> CABLEtalk AUGUST/SEPTEMBER 2021 17

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