TitleProduct

Low Pressure Sodium Lamp SOX 55W

  • Price:

    Negotiable

  • minimum:

  • Total supply:

  • Delivery term:

    The date of payment from buyers deliver within days

  • seat:

    Zhejiang

  • Validity to:

    Long-term effective

  • Last update:

    2019-12-12 07:23

  • Browse the number:

    440

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Company Profile

Lanxi Delphi Lighting Co., Ltd.

By certification [File Integrity]

Contact:derfseo(Mr.)  

Email:

Telephone:

Phone:

Area:Zhejiang

Address:Zhejiang

Website:http://www.dephilux.com/ http://derfseo.zsbofei.com/

Product Details


Benefits

● High luminous efficacy leads to low energy consumption


Features

● Uniform sodium distribution in the discharge tube by means of dimples for a more stable discharge, higher efficacy and better lumen maintenance and lamp life

● Monochromatic yellow color with non-existent color rendering


Application

● Road lighting, railway marshalling yards and crossings, airports, harbours and docks, quarries, foundries and rolling mills.

● Security and orientation lighting.


Versions

SOX


Dimentional Drawing

Product

D (Max)

C (Max)




SOX 35W BY22d

53 mm

311 mm




SOX 55W BY22d

53 mm

425 mm




SOX 90W BY22d

66 mm

525 mm




SOX 135W BY22d

66 mm

765 mm


Approval and Application

Order Code

Full Product Name

Energy Consumption kWh/1000 h

Energy Efficiency Label (EEL)

928145500008

SOX 35W BY22d

40 kWh

A+

928146000018

SOX 55W BY22d

61 kWh

A++

928146500008

SOX 90W BY22d

100 kWh

A++

928147000008

SOX 135W BY22d

148 kWh

A++


Approval and Application

General Information

Mercury (Hg) Content (Nom)

0 mg

Cap-Base

BY22D

Controls and Dimming


Life To 30% Failures (Nom)

8000 h

Dimmable

No

Life To 40% Failures (Nom)

10000 h

Luminaire Design Requirements


Life To 8% Failures (Nom)

6000 h

Bulb Temperature (Max)

150 °C

Light Technical


Correlated Color Temperature (Nom) 1800 K


Introduction

Since its commercial introduction in 1932, the Low Pressure Sodium lamp has consistently maintained its enviable position as the most efficient light source available. In recent years, increasing competition from other discharge lamps is resulting in a slow decline in its market, but it continues to be specified for new installations, particularly in Belgium, the Netherlands, and other global regions in the vicinity of important astronomical observation sites in view of the greatly reduced light pollution it causes. The construction of a typical LPS lamp is illustrated in Figure S1.


Figure S1 - A Typical SOX Lamp

Lamp Construction

For reasons of optimal efficacy the sodium vapour is kept at low pressure, which calls for a discharge tube of large dimensions having a relatively low operating temperature. This permits the use of ordinary glass types such as soda-lime silicate or borosilicate, however a protective layer of special borate glass is blown onto the inner surface of the glass tube so as to reduce the rate of attack by the chemically corrosive sodium vapour. To reduce the length of the long discharge tube it is customary to fold it into a U-shape, although linear designs also exist. The discharge tube is dosed with metallic sodium and also contains a rare gas filling, usually neon-based, which facilitates starting. The electric current is supplied via thermionic electrodes at either end, which are similar in construction to those of the low pressure mercury fluorescent lamp, but of somewhat heavier construction on account of the higher lamp currents. The discharge tube requires thermal insulation to ensure a high lamp efficacy, and this is provided by mounting it inside a secondary outer bulb. It is evacuated to minimise thermal conduction and convection losses, and in the more modern lamps is coated on its inner surface with an infra-red reflective film to minimise radiated heat loss. The outer bulb is equipped with either a bayonet or pin-type cap to ensure the correct alignment of the discharge tube in the optical system of the luminaire.



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