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Current transformer TLO-24 M7

 
 

The main specific features of this design

TLO-24 M7 current transformer for 20-24 kV is designed for installation in indoor and outdoor switchgears and in single-end service assembled chambers.

The current transformer ensures transmitting of the measuring information signal to the measuring instruments and protection and control devices to insulate secondary wiring from high voltage in alternating current electrical units for up to 24 kV voltage class.

Climatic modifications N (temperate climate), Т (tropical climate) or NF (temperate and cold climate), placement categories 2 or 3 under GOST 15150-69.

Полезная информация
Operation Manual See Download
Product passport See Download
Certificates See Download
Data Sheet form See Download
3D-model - Download
Наименование Значение
Rated voltage, kV 20,24
Maximum operating voltage, kV 26,5
Rated primary current, А 5; 7,5; 10; 11; 12; 13; 14; 16; 15; 18; 20; 22; 25; 27,5; 30; 32,5; 35; 37,5; 40; 50; 55; 60; 65; 70; 75; 80; 90; 100; 150; 200; 250; 300; 350; 400; 500; 550; 600; 650; 700; 750; 800; 900; 1000; 1050; 1100; 1150; 1200; 1250; 1300; 1400; 1500; 1550; 1600; 1650; 1700; 1750; 1800; 1900; 2000; 2100; 2200; 2250; 2300; 2500
Rated secondary current, А 1; 5
Rated frequency, Hz 50; 60
Number of secondary windings up to 5
Rated secondary burdens with cosφ=0.8
measuring windings, V·А from 1 up to 50
protective winding, V·А from 1 up to 50
Rated accuracy class:
measuring windings 0,2S; 0,2; 0,5S; 0,5; 1; 3
protective windings 5Р or 10Р
Accuracy limit factor Krated of secondary protective winding from 2 up to 30
Rated instrument security factor FSrated of measuring winding from 3 up to 30
Short-time (one second) thermal current kА, at rated primary current
5-20 А 2,5; 5
30-50 А 5; 10; 20
75-100 А 10; 20; 31,5; 40
150 А 15; 20; 31,5; 40
200 А 20; 31,5; 40-60
300 А 31,5; 40-100
400-2500 40-100
Dynamic current kА, at rated primary current
5-20 А 6,25; 12,8
30-50 А 12,8; 26; 52
75-100 А 26; 52; 81; 100
150 А 39; 52; 81; 100
200 А 52; 81; 100-150
300 А 81; 100-250
400-2500 100-250
Weight, kg, not more 55
Overall dimensions, (LxWxH), mm 371х178х337

 

*Для трансформаторов с расширенным диапазоном первичного тока погрешности при токе 150 % и 200 % номинального первичного тока не превышают пределы допускаемых погрешностей для 120 % номинального первичного тока.

**Для классов точности TPX, TPY, TPZ по ГОСТ Р МЭК 61869-2 значения номинальной вторичной нагрузки S2ном пересчитываются по формуле, В·А:

где  Rb– номинальное values for parameters резистивной нагрузки по ГОСТ Р МЭК 61869-2;

I2ном – номинальный вторичный ток, А.

Габаритные размеры
Исполнение Описание
Modification A
Modification AC
Modification АE
Modification АE
Modification F