Current Transformers

Current transformers or (CT’s) are instruments that are used to transform the current from a high current into a lower current so that the power can then be used for measuring and controlling. The transformers consist of a core, a primary and a secondary winding.RS Components offer an extensive range of highly accurate CT’s in various transformer types, current ratings, CT ratio supply voltages and mounting types to suit every application. Supplied by industry-leading brands including Siemens, Murata Power Solutions LEM and of course RS PRO.

How does a current transformer work?

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.

Types of current transformer

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.

Where would I use a current transformer?

CT's are used in a wide range of industrial and commercial measurement applications. Some of the most common are:Generating stationsElectrical substationsCommercial electric power distributionElectrical panels


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กำลังดูสินค้า 1 - 20 รายการจาก 29 รายการ / Viewing 1 - 20 of 29 products
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รายละเอียดสินค้า / Description ราคา / Price Current Ratio Bore Size Transformer Type Sensor Technology Supply Voltage Input Current Output Current Overall Height Minimum Temperature Overall Width Maximum Temperature Overall Depth Dimensions For Use With
RS Stock No. 122-0468
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.192T2340
Brand :Socomec
THB1,407.13
Each
Units
- 26mm - - - - - - - - - - 75.5 x 61 x 48 mm -
RS Stock No. 122-0476
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.192T5060
Brand :Socomec
THB1,695.34
Each
Units
- 44mm - - - - - - - - - - 98.5 x 86 x 58 mm -
RS Stock No. 182-8460
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.48290500
Brand :Socomec
THB565.37
Each
Units
20:1 - - - - 20A 24 A 45mm -10°C 28mm +70°C 20mm 28 x 20 x 45 mm DIRIS B-30, DIRIS Digiware
RS Stock No. 187-9935
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.192T0510
Brand :Socomec
THB1,949.00
Each
Units
10:5 - DIN Rail Mounted - - 10A 5 A 75.5mm - 61mm - 35mm 75.5 x 61 x 35 mm Energy Meters, Mutlfunction Meters
RS Stock No. 122-0464
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.192T2110
Brand :Socomec
THB894.18
Each
Units
- 17.5mm - - - - - - - - - - 65 x 49.5 x 50 mm -
RS Stock No. 122-0472
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.192T3310
Brand :Socomec
THB2,700.97
Each
Units
- 18mm - - - - - - - - - - 115 x 65 x 37 mm -
RS Stock No. 182-8468
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.48290555
Brand :Socomec
THB1,814.89
Each
Units
63:1 - - - - 63A 75.6 A 44mm -10°C 28mm +70°C 26mm 28 x 26 x 44 mm DIRIS A-40, DIRIS B, DIRIS Digiware
RS Stock No. 122-0480
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.192T9696
Brand :Socomec
THB4,168.18
Each
Units
- 85mm - - - - - - - - - - 184.8 x 172 x 52 mm -
RS Stock No. 184-9457
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.48290558
Brand :Socomec
THB3,201.07
Each
Units
- - Split Core - - - - 86mm -10°C 53mm +55°C 47mm 53 x 47 x 86 mm DIRIS A-40, DIRIS B, DIRIS Digiware
RS Stock No. 122-0567
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.49506120
Brand :Socomec
THB4,223.25
Each
Units
250:5 120mm - - - 250A 5 A - -40°C - +80°C - 163 x 26 x 182.5 mm DIRIS A80, RESYS
RS Stock No. 122-0467
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.192T2325
Brand :Socomec
THB1,068.87
Each
Units
- 26mm - - - - - - - - - - 75.5 x 61 x 48 mm -
RS Stock No. 122-0568
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.49506200
Brand :Socomec
THB9,489.12
Each
Units
400:5 200mm - - - 400A 5 A - -40°C - +80°C - 253 x 51 x 274 mm DIRIS A80, RESYS
RS Stock No. 182-8467
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.192T1405
Brand :Socomec
THB1,155.04
Each
Units
50:5 - Toroidal Ring - - 50A 5 A 65mm - 45mm - 30mm 45 x 30 x 65 mm Measurement Devices
RS Stock No. 122-0471
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.192T3240
Brand :Socomec
THB1,269.02
Each
Units
- 26mm - - - - - - - - - - 75.5 x 61 x 48 mm -
RS Stock No. 122-0565
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.49506030
Brand :Socomec
THB2,166.12
Each
Units
65:5 30mm - - - 65A 5 A - -40°C - +80°C - 92 x 26 x 103.5 mm DIRIS A80, RESYS
RS Stock No. 122-0478
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.192T5090
Brand :Socomec
THB2,153.81
Each
Units
- 44mm - - - - - - - - - - 98.5 x 86 x 58 mm -
RS Stock No. 187-9931
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.192T2006
Brand :Socomec
THB1,155.04
Each
Units
60:5 - DIN Rail Mounted - - 60A 5 A 65mm - 45mm - 30mm 65 x 45 x 30 mm Energy Meters, Mutlfunction Meters
RS Stock No. 187-9962
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.192T0006
Brand :Socomec
THB57.57
Each
Units
- - - - - - - - - - - - - TCA 14/21 Current Transformers
RS Stock No. 122-0470
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.192T3225
Brand :Socomec
THB1,113.14
Each
Units
- 26mm - - - - - - - - - - 75.5 x 61 x 48 mm -
RS Stock No. 182-8466
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.192T1404
Brand :Socomec
THB1,155.04
Each
Units
40:5 - Toroidal Ring - - 40A 5 A 65mm - 45mm - 30mm 45 x 30 x 65 mm Measurement Devices