SPECIFICATION
Corrosion resistant die-cast aluminium alloy (LM6M) canopy and bowl ring: one piece
acrylic bowl. Side reflectors manufactured from super purity magnesium aluminium
alloy, chemically brightened and anodised, rivetted to the internal surfaces of the bowl.
Canopy stoved enamelled and fully gasketted with tropicalised felt against the ingress of 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
Cut-off distribution suitable for group A1 roads at 8 metres mounting height and groups
A2 and A3 up to 10 meters. In accordance with British Standard Code of Practice CP 1004 Part 2: 1963.
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LIGHT DISTRIBUTION DATA
Candelas - Intensity ratio x 1006 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 101
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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85%
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Angle of elevation
Upper limit of beam
Lower limit of beam
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67°
60½°
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65° must be within beam
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Peak intensity ratio
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2.26
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2.0 - 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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1.30 max
.89 min
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not to exceed 2.0
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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75°
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between 72°-78°
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Intensity ratio at the horizontal in the vertical plane parallel to
the street axis
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0.148
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not to exceed 0.15
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Light output in lower hemisphere (downward flux lumens)
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6,737
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Independent Test Report available.
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