Oil Immersed Current Transformers - High Insulation Level, Rated Primary Current Capability, Short Time Withstand Current Protection | Voltage Resistant, Current Sensing, Enhanced Measuring Accuracy

Product Application:
Direct measurement of current in High Voltage System is Not possible because of insulation problem of measuring instruments. It is also not possible to use current flowing through the system directly for protection purpose due to its high insulation problem.

BASIC FUNCTIONS OF CURRENT TRANSFORMERS ARE :
1. To reduce the line current to a value which is suitable for standard measuring instruments relays etc.
2. To isolate the measuring instruments, meters, relays etc. from high voltage side an installation.
3. To protect measuring instruments against short circuit currents.
4. To sense abnormalities in current and give current signals to protective relays to isolate the defective system.
There are four main factors which determine the capability of current
transformer i.e.
* Insulation Level (Service Voltage)
* Rated primary current
* Short time withstand current
* Burden and Accuracy

THE CURRENT TRANSFORMERS MUST :
1. Withstand operational voltage and over voltage in the network
2. Withstand rated primary current in continuous operation without exceeding maximum allowed temperature rise.
3. Be capable o