# IESNA: LM-63-1995 # [TEST] 767756 # [DATE] 6/25/97 # [MANUFAC] COOPER LIGHTING # [LUMCAT] MPN25MXX55 # [LUMINAIRE] 250W MH TYPE V POST TOP # [LAMP] 250W MH CL ED-28 # [_REFLECTOR] TOP OF CANOPY # [_REFRACTOR] ACRYLIC PRISMATIC TYPE V # [_SOCKET POSITION] VERTICAL BASE DOWN # [_LAMP LUMENS] 20500 # TILT=NONE # Bulbs: 1, 20500 lm each # Number of measured angles: 47 vertical, 1 horizontal ones # Photometric type: 1, Units type: 1 # Luminous openig width, length and height: 0.000 0.000 0.000 # Ballast factor: 1, Input power: 250 W # Source file: mpn2m55.ies # Luminaire flux = 10293 lx, # 50.2 % of the bulb flux # between 75 and 90: 34.3 % of the luminaire flux # - this part causes just GLARE in case of road lighting and similar purposes # 80deg and above: max 123.9 cd/1000lm , 29.2 % of the luminaire flux # 90deg and above: max 40.3 cd/1000lm , 12.8 % of the luminaire flux # CutOff Type: IES_Semi-CutOff # Increase of Sky Luminance due to light going # from the luminaire difectly above horizon, as compared with the # luminance produced by the light dispersed from the ground: 390 % # Increase of Sky Luminance in Distant Places by light below 30.0 degrees # due to light going from the luminaire directly above horizon: 773 % # (for the zenith luminance such an angle suits places up to 10 km distance) # The increases concern the following situation: # Albedo = 0.10 # Zenith Extinction = 0.30 mag (i.e., direct light remaining 76 %) # Indicatrix type =0 (0: acc. to P.Cinzano, 4..6: CIE sky types) # (the downward-scattered part of lambertian uplight is 0.1108 then) # Illumination of a rectangle of 0.0:1.0:-2.5:2.5 pole heights: # Per cent of luminaire output falling there: 7.0 # for a unit case (glass at 1 m height, 1000 lm bulb) its illumination: # Maximum: 10.1 lx # Average: 7.0 lx # Minimum: 1.4 lx # Average/Minimum: 5.2 # The following table gives luminous intensities which would be produced # using a hypotetic bulb giving a luminous flux of 1000 lm (i.e., cd/klm): 0.0 1.6 2.5 1.4 5.0 1.4 7.5 1.5 10.0 2.2 12.5 3.9 15.0 5.1 17.5 6.0 20.0 7.1 22.5 6.6 25.0 7.0 27.5 9.2 30.0 9.8 32.5 9.0 35.0 8.5 37.5 8.8 40.0 9.5 42.5 10.0 45.0 10.5 47.5 12.6 50.0 18.9 52.5 30.1 55.0 46.0 57.5 64.8 60.0 80.9 62.5 96.6 65.0 119.0 67.5 148.5 70.0 171.9 72.5 177.4 75.0 167.9 77.5 148.7 80.0 123.9 82.5 96.0 85.0 71.4 87.5 52.7 90.0 40.3 95.0 24.0 105.0 12.3 115.0 10.0 125.0 6.7 135.0 4.3 145.0 1.6 155.0 0.2 165.0 0.5 175.0 0.1 180.0 0.0