Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

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

What is Oil Immersed Electrical Equipment?Transformer Oil Sampling DefinitionTransformer oil sampling is defined as the process of collecting a sample of oil from a transformer or other oil-immersed electrical equipment for analysis.Importance of Oil SamplingRegular oil sampling helps detect potential problems, ensuring the reliability and efficiency of transformers.Sampling FrequencyThe frequency of transformer oil sampling depends on several factors, such as: The type and size of the transform

What are Transformer Accessories ?Breather DefinitionWhen the temperature of transformer insulating oil changes, the oil expands or contracts, causing air exchange when the transformer is fully loaded. As the transformer cools, the oil level drops, and air is absorbed. This process is called breathing, and the device that manages it is the breather. Silica gel breathers control moisture levels entering the equipment during these volume changes.Conservator Tank PurposeA conservator tank provides

What is a Transformer Core?Transformer Core DefinitionA vital component of the transformer, it is responsible for providing the magnetic circuit to direct the magnetic field and convert the electromagnetic energy from the primary side to the secondary side. The design and quality of the core directly affect the efficiency, performance and life of the transformer.The role of the iron core Providing magnetic circuit: The iron core provides a low reluctance path for the magnetic field in the transf

What is Transformer Cooling System?Transformer Cooling System DefinitionA transformer cooling system is defined as methods used to dissipate heat generated in transformers to prevent damage and ensure efficiency.Components of the cooling systemRadiators or CoolersProvides a large area of heat exchange surface, so that the heat in the oil can be transferred to the surrounding air or water.FansAccelerate air flow and improve heat dissipation efficiency.Oil PumpsIn a forced oil circulation system,

What are the On Load and No Load Tap Changer?DefinitionThe on-load tap-changer and no-load tap-changer of a transformer are devices used to regulate the output voltage of the transformer.Load Tap Changer (LTC)Effect Change tap position under load: The tap position can be adjusted when the transformer is under load without interrupting the power supply. Adjust the output voltage: Adjust the output voltage by changing the transformer ratio to adapt to different load requirements.Peculiarity Flexib

What is are the Type of Temperature Indicator of Transformer?Temperature Indicator DefinitionA temperature indicator in transformers is defined as a precision device used for protection, temperature indication, and cooling control.Construction of Temperature Indicator of TransformerThese indicators are provided with a sensing bulb. This sensing bulb is placed in a pocket on the roof of transformer tank. The pocket is filled with transformer oil. The bulb is connected to the instrument housing by

What is MOG in Transformer?Magnetic Oil Gauge DefinitionA Magnetic Oil Gauge (MOG) is defined as a device that indicates the oil level in a transformer’s conservator tank.Main PartsThe MOG includes a float, bevel gear arrangement, and indicating dial, essential for its operation.Working PrincipleAll oil-immersed distribution and electrical transformers are provided with expansion vessel which is known as conservator of transformer. This vessel takes care of oil expansion due to temperature rise.

What is the Radiator of Transformer?Radiator in Transformer DefinitionA radiator in a transformer is defined as a component that helps cool the transformer by dissipating heat from the transformer oil.Importance of CoolingControlling the temperature of the oil is crucial to extend the transformer’s capacity and prevent overheating.Working PrincipleThe radiator increases the surface area to dissipate heat, aiding in efficient cooling of the transformer oil.Type of radiatorNatural air cooled radia

What is Conservator Tank of Transformer?Conservator Tank DefinitionA conservator tank is a cylindrical container on a transformer, providing space for the oil to expand and contract.FunctionThe conservator tank allows transformer oil to expand when hot and contract when cool, preventing overflow and ensuring efficient operation.ConstructionThe conservator tank is a cylindrical oil container closed at both ends. It has a large inspection cover on each side for easy maintenance and cleaning.Conser