Transformers

Transformers:

Approximate Equivalent Circuit of Transformer : Approximate Equivalent Circuit of Transformer – In constant frequency (50 Hz) …


Audio Frequency Transformer : Audio Frequency Transformer is used at the output stage of Audio Frequency electronic …


Back to Back Test of Transformer : The Back to Back Test of Transformer which consists of …


Choice between Star Delta Connection Diagram : Choice between Star Delta Connection Diagram – In star connection …


Choice of Transformer Connection Diagram : The different choice of Transformer Connection Diagram are namely, Star/star: This is economical …


Construction of Transformer : Construction of Transformer is intimately related to the purpose for which these are …


Current and Voltage Transformer : Current and Voltage Transformer – These transformers are designed to meet the …


Forced Cooling of Transformer : Forced Cooling of Transformer – For transformer sizes beyond 5 MVA additional …


How does a Transformer Work : How does a Transformer Work – A Transformer Circuit is a …


Ideal Transformer on Load : In order to visualize the effect of flow of secondary current in …


Losses in Transformer : The transformer has no moving parts so that its efficiency is much higher …


Natural Cooling System in Transformer : Natural Cooling System in Transformer – Smaller size transformers are immersed …


Parallel Operation of Transformer : When the load outgrows the capacity of an existing transformer, it may …


Per Unit System : While carrying out the analysis of electrical machines (or electrical machine systems), it …


Phase Conversion : Three/Two-phase Conversion (Scott Connection): Phase conversion from three to two phase is needed in special …


Phasor Diagram of Transformer : For the approximate equivalent circuit of Phasor Diagram of Transformer is shown …


Phasor Diagram of Transformer on No Load : Figure 3.5 shows the schematic diagram of a Phasor …


Real Transformer On Load Condition : Figure 3.11 shows a Real Transformer On Load Condition. Both the …


Sumpner Test of Transformer : While OC and SC tests on a transformer yield its equivalent circuit …


Switching Transients in Transformer : Switching Transients in Transformer – In the earlier discussion above steady-state operation …


Tap Changing Transformer : Tap Changing Transformer -Voltage variation in power systems is a normal phenomenon owing …


Three phase Transformer Bank of Single phase Transformers : The different Three phase Transformer Bank of Single …


Three Phase Transformer Connections : In generation, transformation, transmission and utilization of electric energy it can be …


Three Winding Transformer : Three Winding Transformer may be built with a third winding, called the tertiary, …


Transformer Cooling System : Transformer Cooling System (Large Units) – Basically, there are two seats of losses …


Transformer Efficiency Formula : Power and distribution transformers are designed to operate under conditions of constant rms …


Transformer Hysteresis and Saturation : Transformer Hysteresis and Saturation : It was stated already that the no-load …


Transformer Nameplate Rating : Transformer Nameplate Rating – The voltage ratio is specified as V1 (rated)/V2 (rated). …


Transformer Testing Methods : Two chief difficulties which do not warrant the Transformer Testing Methods by direct …


Variable Frequency Transformer : So far we have considered transformers which operate at fixed frequency (50 Hz). …


Voltage Regulation Formula : Voltage Regulation Formula – Constant voltage is the requirement of most domestic, commercial …


What is Auto Transformer : So far two-winding transformers have been discussed wherein the windings are electrically …