Transformer Banking

Equivalent circuits for multiple voltage levels

Equivalent circuit with ideal transformer

Equivalent circuit of three-winding transforme

Equivalent circuit of two-circuit transformer

What is Over Fluxing in Transformer ?Over Fluxing DefinitionOver fluxing in a transformer occurs when the magnetic flux density exceeds the designed limit, leading to potential damage.Causes of Over FluxingOver fluxing can be caused by overvoltage, low-frequency power generation, lightly loaded transmission lines, and inadequate shunt compensation.Effects of Over Fluxing Over voltage causes due to sudden load rejection Low frequency generation of power Transmission line is lightly loaded Proper

What is Commissioning of Power Transformer ?Transformer Commissioning DefinitionTransformer commissioning is defined as the process of preparing a power transformer for service by conducting various tests and adjusting settings.Buchholz Relay TestBuchholz relay operation for alarm and trip should also be checked by injecting air to the test pocket provided in the relay.Low Oil Level Alarm TestThe low oil level alarm of the magnetic oil gauge should be checked.Temperature Indicator TestThe contac

What is the Maintenance of Transformers ?Maintenance of transformers is essential to ensure their safe, stable and efficient operation, and the following are some common maintenance measures:Periodic inspectionAppearance check: Check whether the transformer shell is damaged, deformed, and leaking oil.Oil temperature check: Use an oil temperature gauge to measure the oil temperature and ensure that it is within the normal range.Oil level check: Observe the oil level in the oil pillow. If the oil

What is Transformer Acidity Test?Acidity Test DefinitionThe acidity test of transformer oil measures the amount of potassium hydroxide (KOH) needed to neutralize the acid in the oil.Causes of AcidityAcidity occurs due to oxidation, especially when oil contacts air, and is accelerated by heat and metals like iron and copper.Effects of AcidityHigher acidity lowers oilresistivity, increases the dissipation factor, and can harm transformer insulation.Acidity Test Kit ComponentsWe can determine the a

What is Transformer Water Content Test?Water Content Test DefinitionThe water content test in insulating oil is defined as a process using Karl Fischer Titration to measure water levels.Karl Fischer PrincipleTo measure water content in insulating oil, we use Karl Fischer Titration. In this method, water (H2O) reacts chemically with iodine (I2), sulfur dioxide (SO2), an organic base (C5H5C), and alcohol (CH3OH) in an organic solvent.The sample is mixed with sulfur dioxide, iodide ions, and an org