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 Neoprene 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
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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.
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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
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GR 100
Semi-cut-off
Sodium
90W SOX
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B.S. 1788:1964
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Downward light output ratio
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84%
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Angle of elevation
Upper limit of beam
Lower limit of beam
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78°
66°
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75° must be within beam
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Peak intensity ratio
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2.06
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1.8 - 4.0
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Maximum and minimum intensity ratios in the zone from the
downward vertical to 30° therefrom
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1.15 max
.78 min
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not to exceed 1.7
not less than 0.3
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Angle of elevation at which the intensity ratio is 1.2 in the
vertical plane parallel to the street axis
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83°
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between 80°-86°
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Intensity ratio at the horizontal in the vertical plane parallel to
the street axis
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.50
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not to exceed 0.7
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Light output in lower hemisphere (downward flux lumens)
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7,840
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See CP 1004 Part 2: 1963 tables
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Independent Test Report available.
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