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


...
Read more Read less

Filter

Visar 1 - 20 av 1399 produkter
Resultat per sida
Beskrivning Pris Current Ratio Bore Size Transformer Type Sensor Technology Supply Voltage Input Current Output Current Overall Height Overall Width Overall Depth Minimum Temperature Maximum Temperature Mounting Type Series
RS-artikelnummer 173-0044
VarumärkeRS PRO
14,621 kr
Each (In a Box of 351)
Enheter
300:1 5mm - - - 15A - - 9.53mm 20.4mm -40°C +120°C PCB Mount -
RS-artikelnummer 124-3880
VarumärkeRS PRO
16,42 kr
Each
Enheter
300:1 5mm - - - 15A - - 9.53mm 20.4mm -40°C +120°C PCB Mount -
RS-artikelnummer 124-3898
VarumärkeRS PRO
24,53 kr
Each
Enheter
500:1 5mm - - - 5A - - 9.53mm 20.4mm -40°C +120°C PCB Mount -
RS-artikelnummer 173-0220
VarumärkeRS PRO
41,458 kr
Each (In a Box of 140)
Enheter
500:1 7mm - - - 25A - - 11.5mm 21.5mm -40°C +85°C - -
RS-artikelnummer 124-3897
VarumärkeRS PRO
45,54 kr
Each
Enheter
1000:1 7mm - - - 50A - - 11.5mm 21.5mm -40°C +85°C PCB Mount -
RS-artikelnummer 173-0215
VarumärkeRS PRO
22,207 kr
Each (In a Box of 351)
Enheter
500:1 5mm - - - 5A - - 9.53mm 20.4mm -40°C +120°C PCB Mount -
RS-artikelnummer 124-3896
VarumärkeRS PRO
45,96 kr
Each
Enheter
500:1 7mm - - - 25A - - 11.5mm 21.5mm -40°C +85°C - -
RS-artikelnummer 171-8813
VarumärkeRS PRO
326,85 kr
Each
Enheter
1200:5 80 x 12mm Base Mounted - - 1200A 5 A 126mm 104mm 45mm -5°C +55°C Surface Mount -
RS-artikelnummer 171-8814
VarumärkeRS PRO
368,97 kr
Each
Enheter
1250:5 80 x 12mm Base Mounted - - 1250A 5 A 126mm 104mm 45mm -5°C +55°C Surface Mount -
RS-artikelnummer 171-8823
VarumärkeRS PRO
550,16 kr
Each
Enheter
3000:5 100 x 30mm Base Mounted - - 3000A 5 A 155mm 140mm 45mm -5°C +55°C Surface Mount -
RS-artikelnummer 173-0218
VarumärkeRS PRO
45,992 kr
Each (In a Box of 25)
Enheter
1000:1 19.5mm - - - 250A - - 14.3mm 44.5mm -55°C +130°C PCB Mount -
RS-artikelnummer 124-3893
VarumärkeRS PRO
34,55 kr
Each
Enheter
1000:1 14.6mm - - - 200A - - 15.9mm 38.1mm -55°C +130°C PCB Mount -
RS-artikelnummer 171-8824
VarumärkeRS PRO
299,23 kr
Each
Enheter
100:5 35mm Base Mounted - - 100A 5 A 87.5mm 105mm 38mm - - Surface Mount -
RS-artikelnummer 171-8815
VarumärkeRS PRO
385,72 kr
Each
Enheter
1500:5 80 x 12mm Base Mounted - - 1500A 5 A 126mm 104mm 45mm -5°C +55°C Surface Mount -
RS-artikelnummer 171-8753
VarumärkeRS PRO
139,17 kr
Each
Enheter
80:5 21 x 10mm Base Mounted - - 80A 5 A 65mm 7.2mm 40mm -5°C +55°C Surface Mount -
RS-artikelnummer 171-8848
VarumärkeRS PRO
419,31 kr
Each
Enheter
200:5 33 x 23mm Base Mounted - - 200A 5 A 106mm 93mm 40mm +20°C +70°C Surface Mount -
RS-artikelnummer 171-8820
VarumärkeRS PRO
409,07 kr
Each
Enheter
1600:5 100 x 30mm Base Mounted - - 1600A 5 A 155mm 140mm 45mm -5°C +55°C Surface Mount -
RS-artikelnummer 171-8833
VarumärkeRS PRO
335,38 kr
Each
Enheter
600:5 45mm Base Mounted - - 600A 5 A 102.5mm 141mm 38mm - - Surface Mount -
RS-artikelnummer 173-0184
VarumärkeRS PRO
65,00 kr
Each (In a Box of 98)
Enheter
50:1 8mm - - - 50A - - 20.5mm 35mm -40°C +120°C PCB Mount -
RS-artikelnummer 171-8855
VarumärkeRS PRO
218,29 kr
Each
Enheter
5:5 62 x 40mm Base Mounted - - 5A 5 A 78mm 62mm 40mm -5°C +55°C Surface Mount -