Generally there are many factors to be consider for Specifying Transformer but the most important factors for specifying transformer is listed below, Kilo volt ampere (kVA) Rating Voltage Ratings, Ratio, and Method of Connection (Delta or Wye) Voltage Taps Typical Impedance Values for Power Transformers Insulation Temperature Ratings Insulation Classes Sound Levels Effects of Transformer…
In high and extra high voltage transmission systems, capacitor voltage transformers (CVTs) are used to provide potential outputs to metering instruments and protective relays. In addition, when equipped with carrier accessories, CVTs can be used for power line carrier (PLCC) communication. The details of CVT is given below:- Capacitor stack The capacitor stack is a…
A transformer is based on a very simple fact about electricity: electromagnetic induction. When an electric current flows through a wire, it generates a magnetic field or magnetic flux all around it. A magnetic field may be considered as being the medium by which forces are transmitted between magnetized materials. In everyday life, magnetic fields…
Transformer is static machine which pass the electrical energy from one place to another place without change the frequency. Generally Transformer having two types of test, Open circuit test Short circuit test Open circuit (OC) test The shunt branch parameters can be determined by performing this test. Since, the core loss and the magnetizing…
Types of Transformer Transformers can be categorized in different ways, depending upon their purpose, use, construction etc. The types of transformer are as follows, Step Up Transformer and Step Down Transformer – Generally used for stepping up and down the voltage level of power in transmission and distribution power system network. 2. Three…
Distribution transformer Maintenance Today we are going to discuss about the topic what is Distribution transformer and what are the distribution transformer maintenance. in general distribution transformers are normally considered to be those transformers which provide the transformation from 11 kV and lower voltages down to the level of the final distribution network. In the US this was,…
What Do Electrical Transformers Do? You may think that electricity is pretty standard but its voltage and frequency varies between countries and regions in a single country. Essentially, electrical transformers are used to change the voltage of electricity so that it is suitable for different appliances and locations. WHERE ARE TRANSFORMERS USED? You might see…
Transformers: Transformers do not actually make conversion between mechanical and electrical form, but they transfer electric power from one circuit to another circuit. They can decrease or increase the voltage while transferring the power without changing the frequency, but with the corresponding increase or decrease in the current. Transformers also belong to electrical machines. Step up…
Relay Settings : here we can see about what is relay and how to do relay settings. Relay is a device used to protect the equipment from damage during the abnormal or faulty conditions. usually relays having two coil supply A1 and A2, two NO and NC contacts, and common supply contacts. working: whenever the coil…