Current Transformers

Current transformers (CT) are devices that are used to transform the current from a high current into a lower current so that the power can then be measured and controlled. The transformers consist of a core, a primary and a secondary winding. When an alternating current flows through the primary winding, a magnetic flux is created which then induces an alternating current in the secondary winding. This alternating current is proportional to the current in its primary. Current transformers are also known as a "step-down transformers". Once the current has been reduced it can be safely monitored and measured using an ammeter.


Current transformers can perform circuit control and perform roles for safety protection and current limiting.


Current transformers are found in:


  • Generating stations,

  • Electrical substations

  • Commercial electric power distribution.

Types of Current Transformers


Toroidal Current Transformer - These transformers are shaped like a doughnut they do not contain a primary winding. Instead, the line that carries the current flowing in the network is threaded through a window or hole in the toroidal transformer. Toroidal transformers offer high efficiency with minimal excess noise and little excess leakage inductance.


Wound Current Transformer - The transformers primary winding is physically connected in series with the conductor that carries the measured current flowing in the circuit. The magnitude of the secondary current is dependent on the turns ratio of the transformer.


Bar-type Current Transformer – This type of current transformer uses the actual cable or bus-bar of the main circuit as the primary winding, which is equivalent to a single turn. They are fully insulated from the high operating voltage of the system and are usually bolted to the current carrying device.


...
Read more Read less

검색 필터링

총 29개 제품 중 1번째-20번째 제품을 조회 중
한장내 검색 결과 수
제품설명 단가 Current Ratio Inner Diameter Transformer Type Overall Height Overall Width Input Current Overall Depth Output Current Minimum Temperature Maximum Temperature Dimensions For Use With Mounting Type Series
RS 제품 번호 122-0566
제조사 부품 번호49506080
제조사Socomec
₩138,360.75
Each
수량
600/1 80mm - - - - - - -40°C 80°C 116 x 26 x 125 mm DIRIS A80, RESYS DIN Rail Delta IC
RS 제품 번호 122-0548
제조사 부품 번호48290501
제조사Socomec
₩20,661.50
Each
수량
- 8.6mm - - - - - - -10°C +70°C 45 x 28 x 20 mm DIRIS B-30, DIRIS Digiware DIN Rail TE-18
RS 제품 번호 122-0552
제조사 부품 번호48290570
제조사Socomec
₩229,829.35
Each
수량
- 55 (Loop) mm, 55 mm - - - - - - -10°C +70°C 85 x 18 x 38 mm DIRIS B-30, DIRIS Digiware Cable Mount TF-55
RS 제품 번호 122-0468
제조사 부품 번호192T2340
제조사Socomec
₩36,220.40
Each
수량
- 26mm - - - - - - - - 75.5 x 61 x 48 mm - DIN Rail TCB 26-30
RS 제품 번호 182-8467
제조사 부품 번호192T1405
제조사Socomec
₩38,464.80
Each
수량
- - Toroidal Ring 65mm 45mm 50A 30mm - - - 45 x 30 x 65 mm Measurement Devices DIN Rail TCA 14
RS 제품 번호 122-0478
제조사 부품 번호192T5090
제조사Socomec
₩60,699.55
Each
수량
- 44mm - - - - - - - - 98.5 x 86 x 58 mm - DIN Rail TCB 44-50
RS 제품 번호 122-0549
제조사 부품 번호48290502
제조사Socomec
₩60,076.45
Each
수량
- - - - - - - - -10°C +70°C 65 x 25 x 32.5 mm DIRIS B-30, DIRIS Digiware DIN Rail TE-25
RS 제품 번호 182-8466
제조사 부품 번호192T1404
제조사Socomec
₩38,376.45
Each
수량
- - Toroidal Ring 65mm 45mm 40A 30mm - - - 45 x 30 x 65 mm Measurement Devices DIN Rail TCA 14
RS 제품 번호 122-0470
제조사 부품 번호192T3225
제조사Socomec
₩31,356.50
Each
수량
- 26mm - - - - - - - - 75.5 x 61 x 48 mm - DIN Rail TCB 26-40
RS 제품 번호 122-0471
제조사 부품 번호192T3240
제조사Socomec
₩35,811.20
Each
수량
- 26mm - - - - - - - - 75.5 x 61 x 48 mm - DIN Rail TCB 26-40
RS 제품 번호 122-0568
제조사 부품 번호49506200
제조사Socomec
₩430,509.40
Each
수량
600/1 200mm - - - - - - -40°C +80°C 253 x 51 x 274 mm DIRIS A80, RESYS DIN Rail Delta IC
RS 제품 번호 182-8460
제조사 부품 번호48290500
제조사Socomec
₩25,976.45
Each
수량
- - - 45mm 28mm 20A 20mm 24 A -10°C +70°C 28 x 20 x 45 mm DIRIS B-30, DIRIS Digiware Cable Mount TE-18
RS 제품 번호 122-0464
제조사 부품 번호192T2110
제조사Socomec
₩25,244.85
Each
수량
- 17.5mm - - - - - - - - 65 x 49.5 x 50 mm - DIN Rail TCB 17-20
RS 제품 번호 187-9941
제조사 부품 번호192T0525
제조사Socomec
₩60,908.80
Each
수량
- - DIN Rail Mounted 85.5mm 71mm 25A 45mm 5 A - - 85.5 x 71 x 45 mm Energy Meters, Mutlfunction Meters DIN Rail -
RS 제품 번호 182-8468
제조사 부품 번호48290555
제조사Socomec
₩83,433.40
Each
수량
- - - 44mm 28mm 63A 26mm 75.6 A -10°C +70°C 28 x 26 x 44 mm DIRIS A-40, DIRIS B, DIRIS Digiware Cable Mount TR-10
RS 제품 번호 187-9962
제조사 부품 번호192T0006
제조사Socomec
₩1,968.50
Each
수량
- - - - - - - - - - - TCA 14/21 Current Transformers - -
RS 제품 번호 122-0480
제조사 부품 번호192T9696
제조사Socomec
₩117,764.35
Each
수량
- 85mm - - - - - - - - 184.8 x 172 x 52 mm - DIN Rail TCB 85-100
RS 제품 번호 187-9961
제조사 부품 번호192T0003
제조사Socomec
₩1,906.50
Each
수량
- - - - - - - - - - - TRB 60 Current Transformers - -
RS 제품 번호 122-0565
제조사 부품 번호49506030
제조사Socomec
₩98,291.70
Each
수량
600/1 30mm - - - - - - -40°C +80°C 92 x 26 x 103.5 mm DIRIS A80, RESYS DIN Rail Delta IC
RS 제품 번호 122-0467
제조사 부품 번호192T2325
제조사Socomec
₩30,144.40
Each
수량
- 26mm - - - - - - - - 75.5 x 61 x 48 mm - DIN Rail TCB 26-30