Z.5555SB Die-cast body.
Sectional scale drawing of die-cast body.
The Polar curves are based on an average lamp light output through life from a 125 watt OSRAM H.P.M.V. lamp. (3750 lumens).
| 200 w./80 w./125. w | 45w. sodium |
| Directional intensity ratio | 3.4 | - |
| Light above horizontal | 15% | 20% |
| Light output ratio | 75% | 75% |
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ENCLOSED
SMALL "OXFORD"
LANTERN
Z.5555SB Small "OXFORD" lantern with spun body opened to show general construction.
|
Totally enclosed small "Oxford" Lantern.
SPECIFICATION
Catalogue Nos. Z.5543/6/8/56/8B and Z.5545/6/7/55/6/7SB.
(British Patent Nos. 408419, 458617)
Use
Side road lighting; 13-15 ft. mounting height; spacing 100-120 ft. for best results. Greater spacing will produce dark areas midway between
lanterns. Road width up to 30 ft. Also suitable for space or area lighting.
Lamp
| Z.5543B | 125 w. OSRAM H.P.M.V. fluorescent. G.E.S. cap. |
| Z.5545/55SB | 60 w., 75 w., 100 w., 150 w. and 200 w. OSRAM. BC cap. |
| Z.5546/56SB | 80 w. and 125 w. OSRAM H.P.M.V. three-pin BC. |
| Z.5546/56B | 80 w. OSRAM H.P.M.V. fluorescent three-pin BC. |
| Z.5547/57SB | 60 w., 75 w., 100 w., 150 w. and 200 w. OSRAM. ES cap. |
| Z.5548/58B | 45 w. OSRAM sodium. BC cap. |
Mounting
Top entry. The lantern entry is ¾ in. gas. The lantern is locked to the bracket by a ¼ in. Allen
type grub screw.
Lantern Body
Two ranges of lantern body are described here. All lanterns with the catalogue number Z.5543/5/6/7/8 have a spun non-ferrous body, whilst those numbered
Z.5555/6/7/8 have a die-cast light alloy body. An earthing screw is provided.
Lampholder
The lampholder can be B.C. or E.S. for use with an OSRAM lamp or three-slot BC for use with an OSRAM
H.P.M.V. lamp. A G.E.S. holder is required only when 125 w. OSRAM H.P.M.V. fluorescent lamp is used.
Focusing
The lampholder is mounted on a movable bridge which slides on two metal rods. One is marked with
the correct focal position for the various wattages of lamp which can be used.
Optical System
The "Oxford" optical system consists of a symmetric dome "S" and a prismatic bowl refractor "B". The light distribution is non-axial
asymmetric and gives better results than are obtained with the "Wembley" distribution. The bowl refractor carries prisms and flutes on its two surfaces
which gives the necessary redirection and diffusion of light
When the 80 w. or 125 w. OSRAM H.P.M.V. fluorescent lamp or 45 w. OSRAM sodium lamp is used no inner dome refractor is required. The inner reflector
in these lanterns is flat and not dome shaped as with the "Wembley" or "Oxford" lantern.
Weathering Finish The light alloy is
specially selected for its resistance to corrosion. Further protection is obtained by the use of a suitable
primer, undercoat and matt aluminium top coat.
Erection Instructions Full erection and focusing instructions are packed with
each lantern.
APPROXIMATE EXPORT PACKING DETAILS (Standard Case)
LANTERN BODY
Z.5543/5/6/7/8 and Z.5553/5/6/7/8
| 50 |
| cwt. | qr. | lb. |
| 2 | 1 | 21 |
| (142.8 Kgs) |
|
| cwt. | qr. | lb. |
| 2 | 3 | 7 |
| (142.8 Kgs) |
|
8.6 cu. ft.
(0.24 cu. metres)
|
|
GLASSWARE
| Z.6502 |
50 |
| cwt. | qr. | lb. |
| 0 | 2 | 0 |
| (25.4 Kgs) |
|
| cwt. | qr. | lb. |
| 1 | 0 | 0 |
| (50.8 Kgs) |
|
6.7 cu. ft.
(0.19 cu. metres)
|
| Z.6607 |
12 |
| cwt. | qr. | lb. |
| 0 | 3 | 0 |
| (38.1 Kgs) |
|
| cwt. | qr. | lb. |
| 1 | 2 | 24 |
| (99.7 Kgs) |
|
14.75 cu. ft.
(0.42 cu. metres)
|
|
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