## Series Resistance Microammeter

Series Resistance Microammeter: High d.c. voltages are usually measured by connecting a very high resistance (few hundreds of megaohms) in Series Resistance Microammeter as shown in Fig. 7.1. Only the current I flowing through the large calibrated resistance R is measured by the moving coil microammeter. The voltage of the source is given by The […]

## Surge Voltage

Surge Voltage and its Distribution and Control: The design of power apparatus particularly at high voltages is governed by their transient behaviour. The transient high voltages or surge voltages originate in power systems due to lightning and switching operations. The effect of the surge voltage is severe in all power apparatuses. The response of a […]

Advantages and Disadvantages of Various Numerical Methods: For computing the electric fields, various methods have been used, viz. Finite Difference Method, Finite Element Method, Charge Simulation Method and Boundary Element Method. Each of these methods has its own advantages for solving a particular problem. With the FDM, the numerical evaluation of the difference equation is […]

## Boundary Element Method

Boundary Element Method(BEM): Though the charge simulation method is known for its accuracy and speed, it is not very efficient in case of multi-dielectric problems and very thin electrodes, which are often used to control and get the electric field strength in condenser bushings, transformers, etc. Such problems can be solved using the Surface Charge […]

## Electric Field Simulation Method

Electric Field Simulation Method: Electric Field Simulation Method – Charge Simulation Method (CSM) belongs to the family of integral methods for calculation of electric fields. There are two variations of this method: CSM with discrete charges and CSM with area charges. CSM with discrete charges is based on the principle that the real surface charges […]

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