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.


...
Lees meer Lees minder

Filters

21 - 40 van 1096 producten worden weergegeven
Resultaten per pagina
Omschrijving Prijs 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-stocknr. 171-8771
FabrikantRS PRO
10,80 €
Each
Aantal stuks
200:5 30 x 10mm Clip Fit - - 200A 5 A 70mm -5°C 50mm +55°C 31mm 50 x 31 x 70 mm -
RS-stocknr. 171-8798
FabrikantRS PRO
15,80 €
Each
Aantal stuks
800:5 40 x 11mm Clip Fit - - 800A 5 A 78mm -5°C 62mm +55°C 40mm 62 x 40 x 78 mm -
RS-stocknr. 171-8809
FabrikantRS PRO
27,96 €
Each
Aantal stuks
1500:5 61 x 51mm Clip Fit - - 1500A 5 A 110mm -5°C 86mm +55°C 45mm 86 x 45 x 110 mm -
RS-stocknr. 124-3895
FabrikantRS PRO
3,11 €
Each
Aantal stuks
500:1 - - - - 500A - - -55°C - +130°C - 55.6 x 20.6 x 55.6 mm -
RS-stocknr. 171-8831
FabrikantRS PRO
30,39 €
Each
Aantal stuks
300:5 45mm Base Mounted - - 300A 5 A 102.5mm - 141mm - 38mm 141 x 38 x 102.5 mm MCCB
RS-stocknr. 171-8789
FabrikantRS PRO
14,28 €
Each
Aantal stuks
300:5 40 x 11mm Clip Fit - - 300A 5 A 78mm -5°C 62mm +55°C 40mm 62 x 40 x 78 mm -
RS-stocknr. 171-8807
FabrikantRS PRO
27,96 €
Each
Aantal stuks
1250:5 61 x 51mm Clip Fit - - 1250A 5 A 110mm -5°C 86mm +55°C 45mm 86 x 45 x 110 mm -
RS-stocknr. 171-8787
FabrikantRS PRO
14,28 €
Each
Aantal stuks
200:5 40 x 11mm Clip Fit - - 200A 5 A 78mm -5°C 62mm +55°C 40mm 62 x 40 x 78 mm -
RS-stocknr. 171-8776
FabrikantRS PRO
18,07 €
Each
Aantal stuks
400:1 30 x 10mm - - - - - 70mm - 50mm - 30mm 50 x 30 x 70 mm -
RS-stocknr. 171-8799
FabrikantRS PRO
27,19 €
Each
Aantal stuks
400:5 41 x 41mm Clip Fit - - 400A 5 A 98mm -5°C 74mm +55°C 45mm 74 x 45 x 98 mm -
RS-stocknr. 171-8849
FabrikantRS PRO
44,07 €
Each
Aantal stuks
250:5 33 x 23mm Base Mounted - - 250A 5 A 106mm +20°C 93mm +70°C 40mm 93 x 40 x 106 mm -
RS-stocknr. 173-0200
FabrikantRS PRO
1,826 €
Each (In a Box of 133)
Aantal stuks
125:1 - - - - 125A - - -55°C - +130°C - 34.9 x 14.3 x 34.9 mm -
RS-stocknr. 124-3896
FabrikantRS PRO
3,43 €
Each
Aantal stuks
25:1 - - - - 25A - - -40°C - +85°C - 19 x 11.5 x 21.5 mm -
RS-stocknr. 171-8826
FabrikantRS PRO
25,82 €
Each
Aantal stuks
150:5 35mm Base Mounted - - 150A 5 A 87.5mm - 105mm - 38mm 105 x 38 x 87.5 mm MCCB
RS-stocknr. 171-8846
FabrikantRS PRO
37,99 €
Each
Aantal stuks
100:5 33 x 23mm Base Mounted - - 100A 5 A 106mm +20°C 93mm +70°C 40mm 93 x 40 x 106 mm -
RS-stocknr. 171-8792
FabrikantRS PRO
14,90 €
Each
Aantal stuks
500:5 40 x 11mm Clip Fit - - 500A 5 A 78mm -5°C 62mm +55°C 40mm 62 x 40 x 78 mm -
RS-stocknr. 171-8817
FabrikantRS PRO
39,51 €
Each
Aantal stuks
2000:5 80 x 12mm Clip Fit - - 2000A 5 A 126mm -5°C 104mm +55°C 45mm 104 x 45 x 126 mm -
RS-stocknr. 171-8821
FabrikantRS PRO
43,14 €
Each
Aantal stuks
2000:5 100 x 30mm Clip Fit - - 2000A 5 A 155mm -5°C 140mm +55°C 45mm 140 x 45 x 155 mm -
RS-stocknr. 124-3903
FabrikantRS PRO
1,39 €
Each
Aantal stuks
120:1 - - - - 120A - - -40°C - +85°C - 17.2 x 9.53 x 20.4 mm -
RS-stocknr. 171-8812
FabrikantRS PRO
32,65 €
Each
Aantal stuks
1000:5 80 x 12mm Clip Fit - - 1000A 5 A 126mm -5°C 104mm +55°C 45mm 104 x 45 x 126 mm -
Related Products
Provide a voltage output, which is proportional to ...
Description:
Provide a voltage output, which is proportional to the current sensedThe measuring range can be reduced by a factor inversely proportional to the number of primary turns made through the centre hole.
The Socomec TE-25 series circuit sensor measures the ...
Description:
The Socomec TE-25 series circuit sensor measures the load current of an electrical system. It sends the data to meters and measurement hubs via an RJ12 plug-and-play output. The TE current sensor has a maximum voltage of 300V and a ...
CT’s are square type and encapsulated with polycarbonate. ...
Description:
CT’s are square type and encapsulated with polycarbonate. These metering CT’s feature sealable terminal covers and a wide range of primary current ratings. Available in various, Bus bar sizes, case widths, and mounting options. Comprehensive class accuracyCost effective moulded case ...
Three phase measuring current transformers suitable for primary ...
Description:
Three phase measuring current transformers suitable for primary ranges from 60A to 630A with 5A secondary. Allowing installations directly next to the moulded case circuit breakers for greater speed of installation and optimisation of space. Applicable to MCCB such as ...