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FPSL B for HID |
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System design |
The stadium is fed by a primary source. Ideally, a fully independent secondary source should be available, e.g. in a ‘open half-ring’ grid design. In addition to the primary source for the floodlights in the ‘normal’ operation mode, a backup system must be available to power the floodlights up to a certain level, depending on the floodlight illuminance level required (see below). The backup system could be designed either with a diesel generator that is started up when the power failure occurs or a secondary source with a fully automated switchover. The backup system must be capable of providing power to a certain number of hot restrike HID systems within a minute of the failure. An additional number of cold restrike HID systems must then be in operation after a maximum of 15 minutes. |
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System functionality |
In the normal operation mode, the primary source must be able to provide power for the full illuminance level required. If the primary source fails, a backup / secondary system must be able to supply power to achieve the following illuminance values. Within a minute for floodlight illuminance level: |
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Level A: 100% of normal match conditions Level B: Eh > 800 lux |
Level C: Eh > 500 lux Level D: Eh > 20 lux |
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Within a maximum of 15 minutes for floodlight illuminance level: |
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Level A: 100% of normal match conditions Level B: 100% of normal match conditions |
Level C: Eh > 800 lux Level D: Eh > 500 lux |
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Switching back from the backup mode to the ‘normal’ operation must be manually controlled from the moment the full primary power supply is recovered. |
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