Transformer
Transformation Geometry|| types of transform
Transformation Geometry Transformations Transformation means to change. Hence, a geo…
Transformer
Transformer|| transformer use||electrical device laminated
Transformer|| transformer use||electrical device laminated What is a transformer? A …
3-phase transformer- a single unit
Instead of using three number of single phase transformers, a three phase transformer …
Losses, Efficiency, Maximum efficiency, All-day efficiency. Summary of Losses
1. Fixed loss (a) Core loss(b) Dielectric Loss 2. Direct Load Loss (c) I2R loss in …
Back to Back Test:
Two identical transformers are connected back to back ( two secondary windings are co…
Short circuit test (S.C.Test)
To ascertain / determine the followings 1. Copper loss at desired load (PC) 2. Equiva…
O.C. and S.C. tests – Estimation of losses & Equivalent circuit parameters.
Open Circuit Test (O.C.Test) To ascertain / determine the followings 1. Iron loss at …
Polarity test of transformer.
Polarity marks show the connections where the input and output voltages have the sa…
Equivalent circuit.
Taking winding resistances and leakage flux into account The assumption that all the …
Performance under no-load condition with phasor diagram.
When voltage V1 is applied at primary keeping secondary open, no load current I0 will…
Different types of cooling methods
No transformer is truly an 'ideal transformer' and hence each will incur some …
Explosion Vent
The explosion vent is used to expel out hot oil from the transformer during heavy inte…
Core Type
Core is surrounded by winding. In this type of construction winding surrounds the co…
Core Construction
This magnetic circuit, know more commonly as the “transformer core” is designed to pro…
Transformation ratio, KVA rating.
Rating of an electrical machine / equipment is defined as the output power available …
Electrical Machine-I
Single Phase Transformer Principle of operation. Transformer is a static device (and …
Single phase Transformer:
Introduction Transformers are one of the most important components of any power syste…
Single phase Transformer:
Lesson Objective: After going through this section students will be able to understan…
Coupling Capacitor Voltage Transformer (CCVT)
In an electrical power substation, Capacitor Voltage Transformer in combination with…
Capacitor voltage transformers (CVTs)
This type of voltage transformer is normally meant for a high to an ultra-high voltag…