3 in 1 solar street light pdf in Ethiopia

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level for both the red and green LEDs is 90. For the PWM driving the LED, this relates to about a 1.17% duty cycle. Figure 3 shows PWM values for the timer and the logarithmic relationship. Figure 3. Logarithmic Nature of Increasing Intensity (1) In the event of a fault or lamp failure, the Actual Level represents the virtual power level.

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5.3 The luminaire shall be protected from damage or consequential damage for surge-test waveforms. This is defined in ANSI/IEEE C62.41.2-2002 (Tables 1 and 4) for Location Category C in both high and low exposures. High Exposure is defined as a surge with an open circuit voltage of 10KV at 1.2/50 microseconds and a short circuit current of 10KA.



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Traffic Standards (English)

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Ethiopia [PDF]


FC).The uniformity ratio is at 3:1 .Lighting levels should be in addition to the level provided by the regular street lighting system. Typically these fac ilities are 80’ in length and are provided with three lighting fixtures attached at 15’ height. Also refer to RP-33-99 and G-1-03 for additional criteria.

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Greenbook Manual Online

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