ELECTRONIC PHOTO ELECTRIC SWITCH DEVICES

The requirements of an ideal street lighting control device are summarized as one which will:- (a) switch the lamp on and off when required, (b) be unaffected by changes in voltage supply, (C) have a wide operating temperature range, (D) be maintenance free, (e) be easy to install, (F) be drift free, (g) have a long service life, and (h) be economically priced. Cheap thermal photo-electric controls fail to meet all these specifications, and with concern over their poor performance and quality, a study was conducted by the A.P.L.E. The three main recommendations from this study were:- (a) manufacturers should aim for an inverse switching of 1/2:1, (b) quality of manufacture, calibration and operation should be improved, and (C) an electric photo-control should be developed at an economic price. One type of electronic photo-control - the Horstmann EL10 model is described in detail. Thermal photo-electric and timeswitch controls are briefly compared with electronic photo-electric controls, and economic savings resulting from use of the latter are discussed. With their longer service life and greater reliability, electronic-controls are particularly suited to motorway use. It is concluded that future street lighting controls must be flexible, and that this is best met by electronic means. /TRRL/

• Corporate Authors:

  Association of Public Lighting Engineers

  78 Buckingham Gate, Westminster
  London SW1E 6PF,   England 
• Authors:
  • JONES, A J
• Publication Date: 1974-9

Language

• English

Media Info

• Features: Figures; Photos;
• Pagination: p. 161-164
• Serial:
  • Public Lighting
  • Volume: 39
  • Issue Number: 166
  • Publisher: Association of Public Lighting Engineers

Subject/Index Terms

• TRT Terms: Control; Control devices; Costs; Economic efficiency; Electronic equipment; Electronics; Evaluation; Lighting; Maintenance; Quality control; Street lighting
• Uncontrolled Terms: Efficiency; Photoelectrical; Photoelectricity; Quality
• Old TRIS Terms: Electronic devices
• ITRD Terms: 3874: Control; 224: Cost; 237: Economic efficiency; 5911: Efficiency; 6965: Electronics; 545: Lighting (street); 3847: Maintenance; 6913: Photoelectrical; 9063: Quality
• Subject Areas: Economics; Finance; Highways; Maintenance and Preservation; Safety and Human Factors; I85: Safety Devices used in Transport Infrastructure;

Filing Info

• Accession Number: 00096360
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Oct 18 1975 12:00AM