Is code for current transformer?
|IS Number :||IS 2705 : Part 1 : 1992|
|Technical Department :||Electrotechnical Department|
|Technical Committee :||ETD 34 ( Instrument Transformers )|
|ICS Code :||UDC 621.314.224|
What is the symbol for a current transformer?
IEC-60617 Symbol Preview – Current Transformers
|Horizontal Symbol||Vertical Symbol||Description|
|HXF1CT||VXF1CT||CT Current Transformer|
|HXF1T1||VXF1T1||Current Transformer 2|
|HXF1T31||VXF1T31||With 2 Secondaries – Common Magnetic Circuit|
What is current transformer function?
A Current Transformer (CT) is used to measure the current of another circuit. CTs are used worldwide to monitor high-voltage lines across national power grids. A CT is designed to produce an alternating current in its secondary winding that is proportional to the current that it is measuring in its primary.
What IEC 61869?
IEC 61869-11:2017 is a product standard and covers only additional requirements for low-power passive voltage transformers (passive LPVT). … This document covers low-power passive voltage transformers used for measurement or protection and low-power passive voltage transformers used for both measurement and protection.
What is CT and VT?
Generally, when measuring high voltage and high current transformer signals, you use a VT (voltage transformer) and CT (current transformer). The ratios between the primary and secondary rated voltages and rated currents are the VT and CT ratios.
Why CVT is used instead of PT?
CVT is rated for high voltage levels above 100 kV, while PT’s aren’t designed for such large values. … It may be that CVT is just used for Metering and Protection Purpose but when a CVT is used in the Transmission Line then it also serves the purpose of PLCC.
Why is CT used?
CT scans can detect bone and joint problems, like complex bone fractures and tumors. If you have a condition like cancer, heart disease, emphysema, or liver masses, CT scans can spot it or help doctors see any changes. They show internal injuries and bleeding, such as those caused by a car accident.
Why CT is required?
Why it’s done
Your doctor may recommend a CT scan to help: Diagnose muscle and bone disorders, such as bone tumors and fractures. Pinpoint the location of a tumor, infection or blood clot. Guide procedures such as surgery, biopsy and radiation therapy.