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Common Characteristics Of Lamps Used In Electrical Installations


Below are the characteristics of the common lighting technology in use in different electrical installations. Also stated are their place of application, advantages and disadvantages:

Lighting Technology
Application
Advantages
Disadvantages
Standard Incandescent
  • Domestic use
  • Localized decorative lighting

  • Direct connection without intermediate Switchgear.
  • Reasonable purchase price.
  • Compact size
  • Instantaneous lighting
  • Good colour rendering

  • Low luminous efficiency and high electricity consumption.
  • Significant heat dissipation.
  • Short service life.
Halogen Incandescent
  • Spot lighting.
  • Intense lighting

  • Direct connection
  • Instantaneous efficiency
  • Excellent colour rendering

  • Average luminous efficiency
Fluorescent tube
  • Shops, offices, workshop.
  • Outdoors

  • High luminous efficiency.
  • Average colour rendering

  • Low light intensity of single unit.
  • Sensitive to extreme temperatures
Compact fluorescent lamp
  • Domestic use.
  • offices.
  • Replacement of incandescent lamps

  • Good luminous efficiency.
  • Good colour rendering
High initial investment compared to incandescent lamps
HP Mercury Vapor
  • Workshops, halls, hangars.
  • Factory floors

  • Good luminous efficiency.
  • Acceptable colour rendering.
  • Compact size
  • Long service life

  • Lighting and relighting time of a few minutes
High-Pressure Sodium
  • Outdoors
  • Large halls

  • Very good luminous efficiency

  • Lighting and relighting time of a few minutes
Low-Pressure Sodium
  • Outdoors
  • Emergency lighting

  • Good visibility in foggy weather
  • Economical to use

  • Long lighting time (5 mins).
  • Mediocre colour rendering.
Metal halide
  • Large areas
  • Halls with high ceilings

  • Good luminous efficiency.
  • Good colour rendering.
  • Long service life.

  • Lighting and relighting of a few minutes
LED
  • Signaling (3-colour traffic lights, exit signs and emergency lighting

  • Insensitive to the number of switching operation.
  • Low energy consumption.
  • Low temperature

  • Limited number of colors.
  • Low brightness of single unit


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