Transformer Magnetizing Inrush Current
When energizing a power transformer, the transformer draws a magnetizing current. The magnitude of the magnetizing current is several times higher than the rated current … Read more
Transformer
Transformer is the static piece of equipment used for step up and step down the voltage for economic transmission and utilization of electrical power.
In this section we are adding all the technical articles related to transformer like step up transformer, step down transformer, ideal transformer, efficiency and losses, regulation, percentage impedance.
We will also discuss about parallel operation of transformers, copper loss and no load losses and its calculation, all types of routine and type tests, converter duty transformer,dry type transformer, k factor of transformer, maintenance of oil filled and dry type transformer, transformer protection equipment like buccoltz relay, PRD and oil and winding temperature measurement etc.
We will also discuss about the open and short circuit test on transformer.
Copper Loss In Transformer
The copper loss in the transformer is equal to the I2R loss. The copper loss is very important for the calculation of the transformer efficiency. … Read more
No Load Losses in Transformer
What are No-Load Losses( Excitation Losses)? Transformer no-load losses occur when the transformer is excited at the rated voltage and frequency, keeping its secondary open … Read more
Accuracy Class Of Current Transformer
The accuracy class of a CT refers to the permissible error limits of the CT over a specified range of conditions. It ensures that the … Read more
Magnetization Curve of CT
The magnetization curve of the current transformer shows the relationship between the secondary excitation current and secondary excitation voltage. The equivalent circuit diagram of the … Read more
How to Calculate Knee Point Voltage of Current Transformer?
What is the knee point voltage of CT? The knee point is defined as the voltage at which a 10% increase in applied voltage increases the magnetizing current by 50%. … Read more
What is the Use Of Knee Point Voltage?
In this article we will discuss the use of knee point voltage of current transformer in the protection circuit. The knee point voltage of CT … Read more
Why CT Secondary Shall Never Be Kept Open?
Open-circuited CT can cause serious safety concerns like fire, electrocution, and protection failure. Therefore, you must ensure that CT secondary should always be close-circuited. Let … Read more