In order to supply loads exceeding the rating of an existing transformer, two or more transformers are connected in parallel to the existing one. The parallel operation of transformers facilitates…
What is an instrument transformer? Instrument transformers are current and voltage transformation devices that are used to step down the transmission and distribution line voltages and currents to levels that…
Current transformers (CT) and Potential Transformers (PT) are instrument transformer types used to step down transmission or distribution line voltages and current to the level that can be measured using…
Potential transformers (PT) or voltage transformers are instrument transformers used for voltage measurements. They are connected in parallel to the line and operates under the same principle of power transformers.…
What is a current transformer? A current transformer is a type of instrument, used to measure or sense large alternating currents by scaling it to a smaller, safer and measurable…
Some amount of power is lost during the voltage transformation process in a transformer. The current flows in a transformer winding and the alternating magnetic field in the core contributes to the majority of transformer losses.
EMF equation of transformers lets you calculate the RMS values of induced voltages in the primary and secondary windings of a transformer. An alternating voltage, when applied to the primary…
A magnetic core and windings are two basic parts of a transformer. The windings are wound over the core and the core encircles the windings. Based on the way the…
A transformer is the device that makes power systems flexible, scalable and help save cost by reducing power loss. Here you can learn the selection and sizing of transformers and…
An autotransformer is a single-winding electrical transformer. It is also known as variac or dimmer stat. It is made of a single-winding coil. This single-winding setup makes them cheaper, more…