How to calculate short circuit current for transformer

Short circuit current for transformer: Generally we know short circuit current is nothing but low impedance path having abnormal contacts between two points of different  potentials. so short circuit calculation is very important to protect the equipment and people from high mechanical force and high heat stress. so we need to calculate the short circuit…

Collecting Oil Sample from Oil Immersed Transformer

Why we collect oil from transformer: Generally we knows transformer is used to transfer the power supply from one place to another without changing the frequency. transformers playing vital role in the power generation and transformation areas. transformer also called static induction machine. because its working on induction principle. moreover oil is the important component…

Maintenance of Transformer

Transformer: Transformer is static electrical machine. which is used to transfer power from one place to another place without changing the frequency. there are two different types of transformer used in electrical field. they are, power transformer lighting transformer power transformer used for transferring high voltages from generating station to substations. power transformer is most…

Vector Group Test of Power Transformer

Power transformer: The power transformer used to transfer the high voltage supply from one place to another. the power transformer mostly used in power generating station and bulk industry areas. for requiring more power in industrial areas they are using parallel connection of power transformer. the parallel connection of transformer required vector group test for…

Type Test and Routine Test of Transformer

For confirming the specifications and performances of an electrical power transformer it has to go through numbers of testing procedures. Some tests are done at manufacturer premises before delivering the transformer. Mainly two types of transformer testing are done at manufacturer premises- type test of transformer and routine test of transformer. In addition to that…

Restricted Earth Fault Protection of Transformer | REF Protection

REF Protection: An external fault in the star side will result in current flowing in the line current transformer of the affected phase and at the same time a balancing current flows in the neutral current transformer, hence the resultant current in the relay is therefore zero. So this REF relay will not be actuated…

Testing of current transformer

Current transformers are generally used to measure currents of high magnitude. These transformers step down the current to be measured, so that it can be measured with a normal range ammeter. A Current transformer has only one or very few number of primary turns. The primary winding may be just a conductor or a bus…

Maintenance of power transformer

Power Transformer Transformer is the heart of any power system. Hence preventive maintenance is always cost effective and time saving. Any failure to the transformer can extremely affect the whole functioning of the organization. Important components in power transformer to consider for preventive maintenance: The best way of protecting a transformer is to have good…

Periodic inspection & diagnostics of transformer

Transformer is a static device, thus it requires less attention but with proper Periodic inspection & diagnostics of transformer it would be possible to avoid the unwanted break down & frequent interval of schedule maintenance. As transformer is the heart of power network, the maximum availability of it and also to meet the full life…

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