Sodium vapour lamp Sodium vapour lamps are some of the most efficient lamps in the world. They have an efficiency of up to 190 lumens per watt compared to an incandescent street lamp which has between 15 and 19 lumens per watt. This sodium vapour lamps comes in two major groups: 1. High pressure sodium […]
Line insulators The overhead line conductors should be supported with the poles or towers by means of insulators. These insulators act as supports in order to avoid any leakage of current from the conductor to earth. Properties of insulators Here are some of the properties of line insulators i. Mechanical strength should be very high. […]
Direct Transmission Let us see the transmission of DC power from the AC power. The single line diagram of high voltage direct current transmission is given in Alternative current is generated and stepped up to high voltage through the sending end transformer. This high voltage alternating current is converted to the direct current by a […]
