Open Delta Connection of Transformer
When two single-phase transformer is connected in an open delta connection, the arrangement can provide a three-phase supply to the load. The open delta connection … Read more
power transformer
Core Type Transformer – Construction & Working
The transformer can be categorized into core type and the shell type.In a core type transformer the winding encircles the core whereas in a shell type transformer the core encircles the winding. The winding encircles the core of a transformer. The Single phase transformer has two limbs and three phase transformer has three limbs.
Transformer Oil | Testing, Types and Properties
This article describes transformer oil testing, oil types, and their properties. Transformer Insulating Oil is used in the transformer for insulation and cooling purposes. What … Read more
Why transformer rated in KVA, Not in KW?
The transformer is rated in KVA, not in KW. It supplies power to electrical loads like motors and heaters, which have their own power factor. … Read more
Acidity Test of Transformer Oil
The transformer oil is used for insulation and cooling purposes in a transformer. The acidity Test of Transformer oil is a crucial test for analyzing the oxidation … Read more
Dissolved Gas Analysis (DGA) Test of Transformer Oil
The dissolved gas analysis (DGA) test of transformer oil is a tool to detect dissolved gases in the oil for diagnostics to detect incipient faults. … Read more
Derivation of Eddy Current Loss Formula
What is eddy current? When the conductor is placed in the varying magnetic field, the localized current starts flowing in the conductor, which is called … Read more
How to Calculate NGR Resistance Value?
What is NGR? NGR-Neutral Grounding Resistance. NGR limits the ground fault current to the equipment’s safe operating current range to protect all the electrical equipment. … Read more
Transformer Basics & Its Working Principle
What is a Transformer? The transformer is a static device that transfers electrical energy from one circuit to another circuit without altering the frequency. The … Read more
Efficiency of Transformer
The transformer is a vital link between the load and the supply. The efficiency of the transformer is very important in view of energy saving. … Read more