Power Transformer

In this article, we are going to discuss the Oil Temperature Indicator. In a power transformer, especially in a large power transformer, we generally see three temperature indicators installed. One is for the high-voltage winding temperature, another is for the low-voltage winding temperature, and the third one is the Oil Temperature Indicator. In this article, … Read more

In this article, we will discuss the Winding Temperature Indicator of a power transformer. First, let us understand what a Winding Temperature Indicator actually is. Inside the marshalling box of a power transformer in a substation, we generally see two temperature indicators, and sometimes even three temperature indicators. Among these, one is the HV Winding … Read more

Inrush current in a transformer is caused by the saturation of the core when a high flux is produced at the instant of switching on the transformer. We will explain this phenomenon in the following discussion. Also we shall discuss the necessary theory so that the concept becomes clear. Steady State Flus in a Transformer … Read more

Whenever a dead short-circuit fault occurs in the transformer circuit, the transformer delivers a very large current. Under this condition, the apparent power delivered by the transformer becomes very high. The maximum MVA that the transformer can deliver during this fault condition is the fault MVA of the transformer. Calculation of Fault Current of a … Read more

What is a Transformer? A power transformer is a static electrical device. It transforms power from one circuit to another circuit without any direct electrical connection. The working principle of a transformer is based on mutual induction. Ideally, it transforms the entire power without changing its frequency. There are mainly three types of transformers: step-up … Read more

Here, we will discuss the ideal transformer. First, let us understand what an ideal transformer is. An ideal transformer is a transformer that has no losses. The word “ideal” means the transformer operates with 100% efficiency. A transformer becomes 100% efficient only when there is no power loss. Why does power loss occur in a … Read more

Definition of Transformer A transformer is a static electrical device that transfers electrical energy from one circuit to another without changing the frequency. Faraday’s Law of Electromagnetic Induction Let us recall our knowledge of Faraday’s Law of Electromagnetic Induction. Because it is essential for the working principle of a transformer. This famous law states that … Read more