World Of Electrical

Requirements Of Transmission Line Requirements Of Transmission Line All the Requirements of transmission line is mentioned below: Requirements Of Transmission Line: ✓Transmission lines should transfer power for particular distance economically. ✓ Transmission of power should be done for a given power factor. ✓Transmission of power should be done within desired limit of voltage regulation, efficiency and losses. ✓Transmission should withstand wind pressure and temperature variations. May You Like to Read: Types of Electric Drives Future of Electric Cars Objectives of Electrical Safety Terms Related to Electrical Safety ✓ In a transmission line formation of corona and respective loss should be less. ✓Requirement of charging current for a transmission line for transfer of power should be less. ✓Transmission lines should be mechanically strong, so supply of power should not be affected due to mechanical ...

Surge Impedance Loading or SIL - Definition, Formula Surge Impedance Loading or SIL - Definition, Formula What is Surge Impedance Loading? Surge Impedance Loading or SIL is the power demand or load supplied by the transmission line having no resistance by considering unity load power factor. Explanation of Surge Impedance Loading or SIL In case of transmission line surge Impedance Loading is depends on inductance and capacitance of the transmission line. Formula of Surge Impedance Loading or SIL Formula of Surge Impedance Loading or SIL Where, L - Inductance of transmission Line             C - Capacitance of transmission Line   Surge Impedance Loading is independent of the transmission line length.  In this case I^2 X of the transmission line provides charging kVA of the transmission line. SIL or Surge Impedance Loading can also be given as below formula: Formula of Surge Impedance Loading or S...

Selection and Specifications Of Transmission Line Selection and Specifications Of Transmission Line Following factors are affecting the selection and specifications of transmission lines: ✓ Size of transmission conductors ✓ Spacing and distance between conductors ✓ Insulator types ✓ Insulation co-ordination ✓ Voltage regulation ✓ Power losses ✓ Voltage level of transmission line ✓ Tower designs ✓ Clearance levels ✓ Noise emission ✓ Corona loss ✓ Weather conditions e.g. temperature, wind etc. ✓ Mechanical strength of selected conductors ✓ Air pollution In high temperature regions, conductor material chosen for transmission line should  have higher temperature coefficient of resistance. Wind load affects the sag clearance putting more pressure on transmission lines. Mechanical strength of selected conductors should be higher to avoid breaking of conductor due  to wind pressure or increase in temperature etc. Moisturised air or polluted air causes ...

Electrical Safety Signs and Symbols Electrical Safety Signs and Symbols The safe working procedure includes Safety precautions during the execution of work and shall the site shall be kept safe even after working hours are over. All safety gears should be wore by the working persons and the equipment must be handled in correct way. The instructions in simple form play a crucial role in such cases. But the time required to go through text material is more. During emergency, the time required to react is very less so safety sign play a very important role. You may Also Read: Objectives of Electrical Safety Terms Related to Electrical Safety Requirements of Safety Signs The requirement of safety signs are as below: >> It should be illustrative i.e.the person must understand its meaning easily. >> It should convey the instruction easily. >> It should be Pictographically so that it is easily understood by all persons. ...

Electrical Accidents  Topic to be discussed in this article is mentioned below: 1. Meaning of Electrical Accident 2. Reason of Electrical Accident 3. What is I.S.I. Procedure? 4. How Electrical Accident can be Avoided? Explanation of all the topics: Electrical Accidents 1. Meaning of Electrical Accident Unknowingly or my mistake over confidence, unforeseen happening a person may touch a live part and current passes through his body and get a shock can be termed as electric al accident which may result body injury burning of part of body or a death of a person is termed as electric accident. 2. Reasons of Electrical Accidents Accident can also be to the system such as short circuit, saviour leakage current, breaking of live conductors on other conductor on earth wire, on animals, human beings. Accidents may be due to negligence in maintenance operation, over loading, water leakages etc. Accidents may be due to inferior mate...

Terms Related to Electrical Safety Terms Related to Electrical Safety (1) Safety Any method or technique or process which can minimize unwanted events or accidents is  called as safety. Industrial safety is mainly concerned with minimizing hazards in the industries. (2) Hazard Hazard is a potential condition a waiting to be converted into an unwanted event or  accident When the insulation on live conductor is worn out, or becomes weak, then short circuit takes place. Heat is produced, fire takes place, resulting into electric hazard. (3) Accident An unwanted event which can't be anticipated in advance may be termed as an accident. It is always a sudden process and not a gradual one.  As per factories Act 1948, an industrial accident has been defined as "an occurrence in an industrial establishment causing bodily injury to a person which makes him unfit to resume his duties in the next 48 hours. Electrical accidents are ...