A Buchholz relay in a transformer is an oil-activated relay, used to sense abnormalities such as short circuits, overheating, and oil leakages inside a transformer. It is a cylindrical object…
This is a quite common question asked by many. In fact, it is necessary to know why we don't apply DC voltage to a transformer coil. You may come across…
Why are current transformers used in power system? Protective relays coils and measuring instruments such as an ammeter, watt meter and energy meter are very sensitive devices and cannot be…
The most efficient electrical machine is the transformer. Transformers have efficiency above 95%. The autotransformer has an efficiency of close to 98%. The maximum efficiency is achieved under the fully…