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Enclosed Prismatic Panel Lanterns
For 45W, 60W, 80-140W Sodium Lamps
No. P.157
PHOSWARE NEW TYPE enclosed lanterns have been made more slim in section and of lighter
construction than the Standard Phosware types.
Two sizes are avilable, one for 45-60W Sodium lamps and one for 85-140W Sodium lamps.
The body castings are made of corrosion resisting aluminium alloy and are made in two types for Side entry and Top entry
fixing. The castings are treated with an undercoat of protective paint, with a high class top coat, white on the underside and
hammered metallic beige outside finish.
The enclosing bowl is of clear Perspex, with fluted ends. The two sides are fitted with sealed Perspex Prismatic
Panels to give an axial light distribution in accordance with the B.S. Code Of Practise No CP 1004 Parts 1 and 2.
The complete lantners have very clearn lines and are of robust construction. The bowl is fitted with two side hinges and
speical side clips which only need a 90° turn to open or fasten, the lantern being sealed with a suitable gasket
to make it dust tight and easy for maintenance.
These lanterns can be supplied with Control Gear fixed in the Hood
| P.152 |
45-60W |
Top ¾" - 1" BSP |
17¾ |
10¼ |
9¾ |
5½ |
| P.153 |
45-60W |
Side 1" BSP |
17¾ |
10¼ |
9 |
6 |
| P.156 |
85-140W |
Top ¾" - 1" BSP |
27 3/8 |
10½ |
9¾ |
10½ |
| P.157 |
85-140W |
Side 1¼" BSP |
27 3/8 |
10½ |
9 |
11¼ |
Polar Distribution Curve Of P152/3 With 60W SO/H Sodium Lamp
IsoCandle Distribution Curve Of P152/3 With 60W SO/H Sodium Lamp
Polar Distribution Curve Of P156/7 With 140W SO/H Sodium Lamp
Iso-Candle Distribution Curve Of P156/7 With 140 SO/H Sodium Lamp
| Initial lamp lumens |
2610 |
4020 |
6200 |
10250 |
| Average output throughout life |
2250 |
3420 |
5525 |
9100 |
| Average output of lantern throughout life of lamp |
1900 |
2900 |
4700 |
7740 |
| Lantern lumens in lower heimsphere |
- |
- |
4250 |
6950 |
| Directional intensity ratio |
2.3 |
2.3 |
2.1 |
2.1 |
Enclosed Lanterns
For 200W SOI/H And 200W Linear And 2-140W Sodium Lamps
No. P.161
PHOSWARE 200W and 280W Sodium lantern series have been designed to accommodate the various types and
sizes of lamps at present available.
Nos P.160 to P.163 are designed to take the 200W SOI/H lamp while P.165 is a universal type to taken the 200W Linear
lamp with Bi-pin holders or 2-140W lamps with B.C. holders at each end.
For the light control of Nos. P.160, P.161 and P.165 the Perspex bowl is arranged with sealed prismatic panels on the two
sides, while Nos. P.162 and P.163 have a clear Perspex bowl, the interior being fitted with a special designed High Purity
anodised aluminium reflector.
The body castings are made of corrosion resisting aluminium alloy and are fitted with two side hinges and special side
clips which only need a 90° turn to open or fasten and the bowl is sealed with a gasket to make the lantern dust tight
and easy for maintenance.
The lanterns give a light distribution suitable for Group A Traffic routes when installed at a height of 30 to 35 feet.
Standard finish exterior hammered metallic beige, interior white enamelled.
These lanterns can be supplied complete with Control Gear fixed in the Hood
| P.160 |
200W SOI/H |
Refractor |
Top 1" - 1¼" BSP |
39 |
10½ |
11 |
14½ |
| P.161 |
200W SOI/H |
Refractor |
Side 1¼" BSP |
39 |
10½ |
10 |
12½ |
| P.162 |
200W SOI/H |
Reflector |
Top 1" - 1¼" BSP |
39 |
10½ |
11 |
12 |
| P.163 |
200W SOI/H |
Reflector |
Side 1¼" BSP |
39 |
10½ |
10 |
14 |
| P.165 |
200W SLI/H
2-140W SOI/H |
Refractor |
Side 1¼" BSP |
50½ |
10½ |
10 |
20 |
Polar Distribution Curves Of P.160/1 With 200W SOI/H Sodium Lamp
Based on the average lamp output of 20000 lumens.
IsoCandle Distribution Curve Of P.160/1 With 200W SOI/H Sodium Lamp
| Initial lamp lumens |
21500 |
20000 |
26000 |
| Average output throughout life |
20000 |
18400 |
24400 |
| Average output of lantern throughout life of lamp |
16800 |
15600 |
20750 |
| Lantern lumens in lower heimsphere |
15000 |
14000 |
18500 |
| Directional intensity ratio |
2.1 |
2.1 |
2.1 |
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