Current Transformers

pCurrent 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./p pCurrent transformers can perform circuit control and perform roles for safety protection and current limiting./p p Current transformers are found in:/p ulliGenerating stations,/li liElectrical substations/li liCommercial electric power distribution./li/ul h2Types of Current Transformers/h2 pstrongToroidal Current Transformer/strong - 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./p pstrongWound Current Transformer/strong - 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./p pstrongBar-type Current Transformer/strong – 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./p

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Beskrivning Pris Current Ratio Inner Diameter Transformer Type Overall Height Overall Width Overall Depth Input Current Output Current Minimum Temperature Maximum Temperature Dimensions For Use With Mounting Type Series
RS-artikelnummer 819-9779
Tillv. art.nrMini CT Sensor
VarumärkeEfergy
107,02 kr
Each
Enheter
- 12mm Split Core - - - - - - - - Data Loggers/DAS, Digital or Analog Meters, DMMs, Recorders - -
RS-artikelnummer 715-7061
Tillv. art.nr56100C
14,27 kr
Each
Enheter
- - - - - - 10A - -40°C +85°C 16.79 x 8.89 x 20.19 mm - Through Hole -
RS-artikelnummer 106-8532
Tillv. art.nr56100C
13,984 kr
Each (In a Tube of 25)
Enheter
- - - - - - 10A - -40°C +85°C 16.79 x 8.89 x 20.19 mm - Through Hole -
RS-artikelnummer 250-0142
Tillv. art.nrTRA12UN100
VarumärkeCarel
118,11 kr
Each
Enheter
- - - 47mm 58mm 33mm - - - - - 12/24Vac controllers Surface Mount -
RS-artikelnummer 729-5520
Tillv. art.nrAC-1200
VarumärkeNuvotem Talema
50,46 kr
Each
Enheter
- - - - - - 200A - -40°C +120°C 55.6 x 20.6 x 55.6 mm - Through Hole -
RS-artikelnummer 173-0060
Tillv. art.nrAC-1200
VarumärkeNuvotem Talema
45,354 kr
Each (In a Box of 27)
Enheter
- - - - - - 200A - -40°C +120°C 55.6 x 20.6 x 55.6 mm - Through Hole -
RS-artikelnummer 173-0070
Tillv. art.nrAX-0500
VarumärkeNuvotem Talema
18,631 kr
Each (In a Box of 250)
Enheter
- - - - - - 5A - -40°C +120°C 12.7 x 17 x 9.53 mm - Through Hole -
RS-artikelnummer 914-5290
Tillv. art.nrCTSCMWH30/0.333V
VarumärkeHOBUT
188,15 kr
Each
Enheter
- 10mm Split Core - - - 30A 333 mV -15°C +50°C 28.7 x 26.4 x 41.7 mm Multi Function Meter Cable -
RS-artikelnummer 399-7244
Tillv. art.nrASM-010
VarumärkeNuvotem Talema
43,53 kr
Each
Enheter
- - - - - - 10A - -40°C +120°C 20.4 x 17.2 x 9.53 mm - PCB Mount -
RS-artikelnummer 400-8575
Tillv. art.nrAS-100
VarumärkeNuvotem Talema
37,95 kr
Each
Enheter
- - - - - - 15A - -40°C +120°C 17.2 x 20.4 x 9.53 mm - PCB Mount -
RS-artikelnummer 775-4915
Tillv. art.nrAX-0500
VarumärkeNuvotem Talema
20,78 kr
Each
Enheter
- - - - - - 5A - -40°C +120°C 12.7 x 17 x 9.53 mm - Through Hole -
RS-artikelnummer 832-9857
Tillv. art.nrL01-8001
VarumärkeAlttec
123,55 kr
Each
Enheter
50:5 21.5mm Clip Fit 65mm 45mm 30mm - - - +40°C 65 x 45 x 67 mm - - -
RS-artikelnummer 775-2701
Tillv. art.nrCTSCMICRO19-100/5-T-S
VarumärkeHOBUT
443,79 kr
Each
Enheter
- - - 78mm 58mm 49mm - - -30°C 55°C - - - -
RS-artikelnummer 537-4520
Tillv. art.nrAC-1020
VarumärkeNuvotem Talema
38,278 kr
Each (In a Pack of 5)
Enheter
- - - - - - 20A - -40°C +120°C 23.8 x 23.8 x 11.12 mm - PCB Mount -
RS-artikelnummer 857-7432
Tillv. art.nrE83-2050
VarumärkeCarlo Gavazzi
3 501,28 kr
Each
Enheter
100 A:30 mA 12mm Base Mounted 56mm 22.5mm 47.4mm - - -20°C +50°C 56 x 22.5 x 47.4 mm - - -
RS-artikelnummer 914-5294
Tillv. art.nrCTSCMWH60/0.333V
VarumärkeHOBUT
188,15 kr
Each
Enheter
- 10mm Split Core - - - 60A 333 mV -15°C +50°C 28.7 x 26.4 x 41.7 mm Multi Function Meter Cable -
RS-artikelnummer 775-4956
Tillv. art.nrAP-2000
VarumärkeNuvotem Talema
16,52 kr
Each
Enheter
- - - - - - 15A - -40°C +85°C 17.2 x 9.53 x 20.4 mm - - -
RS-artikelnummer 351-099
Tillv. art.nrMI5
VarumärkeCarlo Gavazzi
352,07 kr
Each
Enheter
- - - 45mm 52mm 16mm 0.5 → 5A - -20°C +60°C - - - -
RS-artikelnummer 812-9613
Tillv. art.nrCMCT500-400-1/1
VarumärkeCarroll & Meynell
1 304,29 kr
Each
Enheter
- - - - - - 40 → 500A - - - 157 (Dia) x 63 mm - Surface Mount -
RS-artikelnummer 832-9839
Tillv. art.nrL01-8501
VarumärkeAlttec
239,24 kr
Each
Enheter
50:5 28mm - 78.5mm 61mm 72mm - - - +40°C - - - -
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