This lantern lends itself for use in City and Town centres and other areas which require a high level of illumination. Freedom from glare, for the comfort of both drivers and pedestrians are provded in addition to good colour rendering.

Specification

Special Features. Employing two lamps in tandem has the effect of creating a linear source, a feature which ensures even road brightness and is complimentary to the type of distribution and intensities required for Group A1 lighting, in accordance with CP1004, 1963, Code Of Practise.

Means of access into the lantern is through a hinged door in the lantern canopy which is sealed by a braided asbestos gasket. The plastic bowl which does not require removal for maintenance, is sealed permanently in position with a 'D' section neoprene gasket. These features ensure low maintenance, and important factor at the new mounting heights recommended by the Code Of Practise. The hinged canopy door to which the lamps are fixed provide a positive working surface when re-lamping is necessary.

Economy burning can be effected by switched off one of the lamps at midnight.

Optical System. Two reflectors are used to achieve the semi-cut-off distribution required. The lantern has a sharp runback characteristic to ensure a glare free installation.

Materials. The lantern canopy is cast L.M.6 silicon aluminium alloy. Reflectors are manufactured from high purity aluminium alloy and the bowl from clear plastic. Other parts of the lantern are manufactured from corrosion resisting alloys and stainless steel. The internal wiring is glass braided heat resisting cable. A cable cleat and terminal block are provided.

Finish. The casting is finished with a stove enamelled aluminium paint, and the reflectors are anodised.

Installation. The spigot entry is 5" in length and 1½" B.S.P. diameter. The spigot is firmly engaged by three stainless steel socket headed screws, holding it firmly in position. The hinge pins of the canopy door assembly are hollow stainless steel Sel-lok pins and the door is firmly locked in position by two ¼" B.S.W. Stainless Steel cheese headed screws.

Lamps. Two ATLAS 400 watt MBF/U Mercury fluorescent lamps.

Catalogue Number. PPC/D.2400.