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Auto transformer is a transformer in which part of the winding is common to both the primary winding circuit and a secondary winding. In normal two winding transformers, primary and secondary winding are electrically isolated but in the case of an autotransformer, the two winding are connected electrically as well as magnetically. Auto transformer are also called […]
The working principle of the transformer is based on Faraday’s law of electromagnetic induction. The three-phase power transformer is the main device of every power system. the main function of transformer is to step up or step down the voltage level. Considering the insulation part of the generator, the generation of electrical power is limited […]
There are in general two types of transformer Shell type and core type transformer These two types differ from each other in the manner in which winding wound on the magnetic core. Core type Transformer In core type, the magnetic core is built of laminations to form a rectangular frame and the windings are arranged […]
Magnetic Oil Gauge is also referred to as MOG. it is a device that is fitted on the conservator tank to monitor the transformer oil level. The MOG is a small circular dial shape window placed on the side of the conservator tank with a float mechanism inside the conservator that rises and falls with […]
Step down transformer is an essential component of many electrical systems. They are used to convert high voltage, low current power into low voltage, high current power. This is important because many devices and appliances require lower voltage than what is typically available from the power grid. Step down transformers allow us to use these […]
Transformer oil testing is a crucial part of transformer maintenance, as the oil serves as electrical insulation between the winding and tank and acts as a cooling agent. Over time, the oil can become contaminated, which can degrade its insulating properties and reduce its ability to dissipate heat. Therefore, periodic transformer oil testing is essential […]
The dielectric strength of transformer oil is known as BDV or break-down voltage. BDV test is performed on transformer oil to find the dielectric strength of transformer oil. BDV represents the minimum voltage withstand capacity of transformer oil without breakdown. BDV test of transformer oil is very important because the transformer oil’s main function is […]
Voltage control is performed by changing the transformer turn ratio. This is achieved by providing Tapping on the transformer winding. In a tap changing transformer, taping is either provided on the primary or on the secondary winding of the transformer. Most of the electrical loads and equipment are designed to work satisfactorily on constant voltage. […]
The Scott connection of the transformer is a standard method of connecting two single-phase transformers to perform the three-phase to two-phase conversion and vice versa. Scott connection of transformer is also known as T – T connection. In Scott-T connection, two single-phase transformers are connected electrically not magnetically. One transformer is called the main transformer and […]
Transformers are said to be connected in parallel operation when their primary connected to a common supply and secondary connected to a common load. The function of the transformer is to deliver power to the locality, city. But in some cases, a single transformer unit is unable to fulfill the load requirement. in this case, Parallel Operation […]
