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Designed to use the 90W SOX Lamp

SPECIFICATION

Corrosion resistant die-cast aluminium alloy (LM6M) canopy and bowl ring: one piece acrylic bowl with sealed on machined and polished refractor plates. Inside of canopy stoved white, fully gasketted with Noeprene strip to eliminate dirt and moisture; fitted porcelain terminal block, earth screw and cable clamp. Porcelain B.C. lampholder with heat resisting leads. Stainless steel hinge pins and 'quick action' spring clips.

Compiles with B.S. 1877:1964

PERFORMANCE

Semi-cut-off sodium suitable for groups A1, A2 and A3 roads at 8m mounting heights in accordance with British Standard Code of Practice CP 1004 Part 2: 1963.

 

LIGHT DISTRIBUTION DATA

Candelas - Intensity ratio x 1441 M.H.I. Based on average output of 12,250 Lumens. Large scale Iso-Candle Diagrams and Polar Curves availabel on request. ELECO PHOTOMETRIC LABORATORY.

Photometric Data GR 110
Semi-cut-off
Sodium
90W SOX 		B.S.
1788:1964
Downward light output ratio 84%
Angle of elevation
    Upper limit of beam
    Lower limit of beam
78°
66°
75° must be within beam
Peak intensity ratio 2.06 1.8 - 4.0
Maximum and minimum intensity ratios in the zone from the downward vertical to 30° therefrom 1.15 max
.78 min
 not to exceed 1.7
not less than 0.3
Angle of elevation at which the intensity ratio is 1.2 in the vertical plane parallel to the street axis
83°
between 80°-86°
Intensity ratio at the horizontal in the vertical plane parallel to the street axis
.50
not to exceed 0.7
Light output in lower hemisphere (downward flux lumens)
7,840
 See CP 1004 Part 2: 1963 tables