## What is the difference between 0.2 and 0.2S class CT?

The metering class current transformer is used for metering the energy for revenue purposes. Therefore, the metering class current transformer must be as accurate as … Read more

## Current Transformer – Construction, Phasor and Errors

We shall discuss current transformer – Construction, Phasor and Errors in this post. Current transformer are widely used for measuring the high current.The Current transformer … Read more

## What is meaning of 5P20 in current transformer?

There are three types of current transformers which are used for various application. 1. Metering Purpose2. Protection Purpose3. Special Protection Purpose The particular class of … Read more

## How to Calculate Burden of CT

Burden of the current transformer is expressed in VA. The total VA burden should be taken into account when CT is used for measuring or … Read more

## Current Transformer Secondary Grounding

According to the ANSI guide, the IEEE standard specifies the current transformer grounding practices. The grounding of the current transformer is very important in the perspective of … Read more

## Accuracy Class Of Current Transformer

Current transformers are used for measurement of electrical parameters like ampere, power, and energy. CTs are also used for measuring the current at fault condition, … 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?

Knee point voltage As per IEC, the knee point voltage is defined as the voltage at which a 10% increase in applied voltage increases the magnetizing current by 50%. … Read more

## Why CT Secondary Shall Never Be Kept Open?

Construction of Current transformer: The current transformer basically consists of an iron core upon which primary and secondary winding are wound. The primary winding of … Read more