Street lighting installation reference
The supplied installation photograph shows workers using an elevated work platform beside a road luminaire. A blue control device is visible on top of the luminaire. The photograph illustrates a mounting arrangement; the specific controller model, project location, installed quantity and commissioning date have not been independently confirmed.
Illustrative energy calculation: LED dimming
The following calculation is a separate illustrative scenario based on assumptions presented in the 2019 UMELINK solution brochure, pages 14–15. It is not a measured result from the photographed installation.
Assumptions: 10,000 luminaires, 11 operating hours per day, 365 days per year and an illustrative electricity price of RMB 0.86/kWh. The dimmed case assumes a 70 W average input over those operating hours.
| Annual result | 100 W LED baseline | Assumed 70 W average with dimming |
|---|---|---|
| Electricity consumption | 4,015,000 kWh | 2,810,500 kWh |
| Electricity cost | RMB 3,452,900 | RMB 2,417,030 |
The calculated annual reduction is 1,204,500 kWh (30%) and RMB 1,035,870. Annual consumption = quantity × average input watts ÷ 1,000 × operating hours. Annual electricity cost = annual consumption × electricity price.
These figures are recalculated from the stated assumptions rather than copied from the brochure’s inconsistent totals. The brochure’s combined 75% claim includes a lamp-replacement comparison and must not be attributed to a receptacle or controller alone.
Applying the example to a project
Actual savings depend on the load, driver dimming response, operating schedule, required illumination, metering boundary and control-system consumption. Confirm electrical compatibility, wiring, orientation and sealing against the applicable installation instructions. Compare measured consumption under equivalent lighting-service conditions before claiming project savings. A receptacle alone does not provide the dimming strategy.
Source: UMELINK SMART LIGHT SOLUTION 2019, pages 14–15 (historical illustrative assumptions; not a current project measurement report). No maintenance-cost or carbon-reduction totals are claimed here.
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