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Designed to use the 180W SOX Lamp

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 or 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

Cut-off distribution suitable for groups A1, A2 and A3 roads up to 12 meters mounting height. In accordance with British Standard Code of Practice CP 1004 Part 2: 1963. Acceptable for use on trunk roads M.O.T. ref HE6/19/014-22.5.70.

 

LIGHT DISTRIBUTION DATA

Candelas - Intensity ratio x 2585 M.H.I. Based on average output of 31,500 Lumens. Large scale Iso-Candle Diagrams and Polar Curves availabel on request. ELECO PHOTOMETRIC LABORATORY.

Photometric Data GR 201
Cut-off
Sodium
180W SOX
B.S.
1788:1964
Downward light output ratio 57%
Angle of elevation
    Upper limit of beam
    Lower limit of beam

68½°
61°

65° must be within beam
Peak intensity ratio 2.21 2.0 - 4.0
Maximum and minimum intensity ratios in the zone from the downward vertical to 30° therefrom 1.38 max
0.92 min
not to exceed 2.0
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
76°

between 72°-78°
Intensity ratio at the horizontal in the vertical plane parallel to the street axis
.123

not to exceed 0.15
Light output in lower hemisphere (downward flux lumens)
17,953

Independent Test Report available.