Deepakkumar Yadav
Testing of Surge Arresters (Surge Diverters) Surge arrester is important member of protection system. The voltage surgers due lightening strokes and switching surges are diverted to earth by this device this protecting the other equipment connected on the line. The different test to be performed on surge arresters are tabulated in Table. Item Test category … Read more
General Layout of Steam Power Plant The general layout of a steam power plant, is shown in Figure. It consists of mainly the following four circuits Coal and ash circuit Air and gas circuit Feed water and steam circuit Cooling water circuit Coal and ash circuit : Coal received at the coal storage is supplied … Read more
Types of Medium Sizes of Laboratory Layout The layout of a h.v. laboratory is an important aspect for providing an efficient testing facility. Laboratory arrangements differ very much from single equipment to multiple d.c., a.c., and impulse arrangements in different testing program. Each laboratory has to be designed individually considering the type of equipment to … Read more
Essentials of a Steam Power Plant Coal based steam power plants are commonly used in India to produce electrical power in central stations since the coal is cheaply available in abundance. These plants are built in the capacity range of 10 MW or even larger capacities. These plants are located at a site where the … Read more
Planning, Design and Layout of High Voltage Laboratory Q. What are the various factors to be considered while designing a High voltage laboratory? High voltage laboratories are an essential requirement for conducting various tests for the equipment. In addition, they are also used in the development work on equipment for conducting research, and for planning … Read more
Introduction to Types of Power Plants Power plays an important role in the working of men whether it is in industry. agriculture, transportation, human comfort etc. The per capita consumption of electrical power reflects on the living standards and prosperity of a nation. Any lack of energy will hamper the economic progress of the country. … Read more
Classification of HV Laboratories (As per Size and Rating) A Small Size Laboratory Medium Size Laboratory 1. A Small Size Laboratory A small size laboratory is one that contains d.c. or power frequency test equipment of less than 10 kW / 10 WA rating and impulse equipment of energy rating of about 10 kJ or … Read more
High voltage motor testing The tests to be conducted on high voltage motors are as below High Voltage DC Test Sustained low Frequency Tests High Frequency Test Surge or Impulse Test High Voltage DC Test A DC voltage about two times of the normal rated voltage is applied across the motor under test. The voltage … Read more
Radio Interference Measurement Due to various reasons the noise voltage is produced such as : Over head conductors subjected to high voltage stresses and abrupt changes in the climatic conditions. Bonding between the porcelain body of the solid insulator fitted on the metallic-pin. Binding of H.V. conductor to the body (grove) of the insulator body … Read more
Power Frequency Test Power Frequency Sparkover Test (Dry and Wet) The test setup is shown in Figure. A standard voltage source is used. This source is connected between live terminal and earth terminal of surge arrester. A voltage of 1.5 times rated voltage is applied to surge arrester consecutively for 5 times. Sparkover should not … Read more