T&D Systems > Worldwide Presence > TTDI > Switchgears > Current Transformers (Oil Filled)

Current Transformers (Oil Filled)

(12 kV to 420 kV)

Hermetically Sealed Current Transformers (Oil Filled) have a robust design with feasibility to achieve desired Accuracy class and Output. Both live and dead tank designs available for Current Transformers. We can also supply the Current Transformers with polymer insulators upon request.

These products are being manufactured at TTDI switchgear plant (Rudraram, Hyderabad), where TTDI is known for quality and consistency.

Current Transformers (Oil Filled)
Types DT/LT 12 DT/LT 36 LT 72.5 LT 145
Rated Voltage 11 kV 33 kV 66 kV 132 kV
Highest System Voltage 12 kV 36 kV 72.5 kV 145 kV
One minute power frequency voltage 28kV rms 70 kV rms 140 kV rms 275 kV rms
Lightning impulse voltage 75 kV Peak 170 kV Peak 325kV Peak 650 kV Peak
Rated frequency 50 Hz 50 Hz 50 Hz 50 Hz
Short time thermal current 25kA rms/3 sec 25kA rms/3 sec 31.5kA rms/3 sec 40kA rms/3 sec
Dynamic withstand current 32.5kA Peak 62.5kA Peak 78.75kA Peak 100kA Peak
Total Creepage Distance *300 *900 *1813mm *3625mm
Primary Current Upto 2400A & higher currents can also be supplied on request Upto 2400A & higher currents can also be supplied on request Upto 2400A & higher currents can also be supplied on request Upto 2400A & higher currents can also be supplied on request
Type DT 145 DT 245 DT 420
Rated Voltage 132 kV 220 kV 400 kV
Highest System Voltage 145 kV 245 kV 420 kV
One minute power frequency voltage 275kV rms 460 kV rms 630 kV rms
Lightning impulse voltage 650 kV Peak 1050 kV Peak 1425kV Peak
Rated frequency 50 Hz 50 Hz 50 Hz
Short time thermal current 31.5kA rms/3 sec & 40kA/1 sec 40kA rms/1 sec 50kA rms/3 sec
Dynamic withstand current 78.75kA Peak / 100kA Peak 100kA Peak 125kA Peak
Total Creepage Distance *3625 mm *6125 mm *10500 mm
Primary Current Upto 2400A & higher currents can also be supplied on request Upto 2400A & higher currents can also be supplied on request Upto 2400A & higher currents can also be supplied on request

* Other Creepage can also be offered on specific request

Technical Parameters of the products contained in this website are generic in nature. Please contact us for any Latest / Updated / Specific Information.