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

1 - 20 van 99 producten worden weergegeven
Resultaten per pagina
Omschrijving Prijs Current Ratio Bore Size Transformer Type Overall Height Sensor Technology Overall Width Supply Voltage Input Current Overall Depth Output Current Minimum Temperature Maximum Temperature Dimensions For Use With
RS-stocknr. 886-2115
FabrikantnummerXW01-105081S000000
FabrikantSifam Tinsley
19,24 €
Each
Aantal stuks
30:5 - Base Mounted - - - - - - - - - 62 x 40 x 78 mm -
RS-stocknr. 886-2162
FabrikantnummerXM19-285111S000000
FabrikantSifam Tinsley
26,37 €
Each
Aantal stuks
300:5 50mm Base Mounted - - - - - - - - - 86 x 45 x 110 mm -
RS-stocknr. 123-6732
FabrikantnummerXS01-275071S 000000
FabrikantSifam Tinsley
45,00 €
Each
Aantal stuks
250:5 - Base Mounted - - - - 250A - 5 A +20°C +70°C - -
RS-stocknr. 886-2171
FabrikantnummerXM19-315131S000000
FabrikantSifam Tinsley
26,37 €
Each
Aantal stuks
400:5 50mm Base Mounted - - - - - - - - - 86 x 45 x 110 mm -
RS-stocknr. 136-6365
FabrikantnummerXM22-375131S000000
FabrikantSifam Tinsley
28,71 €
Each
Aantal stuks
800:5 72mm - 104mm - 104mm - 800A 45mm 5 A - - 104 x 45 x 104 mm -
RS-stocknr. 886-2190
FabrikantnummerXM20-335131S000000
FabrikantSifam Tinsley
27,76 €
Each
Aantal stuks
600:5 60mm Base Mounted - - - - - - - - - 86 x 45 x 110 mm -
RS-stocknr. 886-2193
FabrikantnummerXM19-405151S000000
FabrikantSifam Tinsley
27,61 €
Each
Aantal stuks
1200:5 50mm Base Mounted - - - - - - - - - 86 x 45 x 110 mm -
RS-stocknr. 136-6366
FabrikantnummerXM22-395141S000000
FabrikantSifam Tinsley
29,32 €
Each
Aantal stuks
1000:5 72mm - 104mm - 104mm - 1000A 45mm 5 A - - 104 x 45 x 104 mm -
RS-stocknr. 886-2106
FabrikantnummerXW01-085081S000000
FabrikantSifam Tinsley
19,24 €
Each
Aantal stuks
20:5 - Base Mounted - - - - - - - - - 62 x 40 x 78 mm -
RS-stocknr. 136-6371
FabrikantnummerXM22-435151S000000
FabrikantSifam Tinsley
32,58 €
Each
Aantal stuks
1600:5 72mm - 104mm - 104mm - 1600A 45mm 5 A - - 104 x 45 x 104 mm -
RS-stocknr. 886-2196
FabrikantnummerXM19-415151S000000
FabrikantSifam Tinsley
27,61 €
Each
Aantal stuks
1250:5 50mm Base Mounted - - - - - - - - - 86 x 45 x 110 mm -
RS-stocknr. 886-2225
FabrikantnummerXM24-375141S000000
FabrikantSifam Tinsley
33,50 €
Each
Aantal stuks
800:5 100mm Base Mounted - - - - - - - - - 140 x 45 x 155 mm -
RS-stocknr. 136-6368
FabrikantnummerXM22-405151S000000
FabrikantSifam Tinsley
30,24 €
Each
Aantal stuks
1200:5 72mm - 104mm - 104mm - 1200A 45mm 5 A - - 104 x 45 x 104 mm -
RS-stocknr. 886-2146
FabrikantnummerXM13-245071S000000
FabrikantSifam Tinsley
14,58 €
Each
Aantal stuks
200:5 40mm Base Mounted - - - - - - - - - 62 x 40 x 78 mm -
RS-stocknr. 136-5726
FabrikantnummerTT20-V8EF2DRZ00000
FabrikantSifam Tinsley
113,58 €
Each
Aantal stuks
5:1 - - 65.5mm - 43.75mm 60 → 300 V ac/dc 5A 106.5mm 4 → 20 mA 0°C +45°C - -
RS-stocknr. 886-2156
FabrikantnummerXM13-335111S000000
FabrikantSifam Tinsley
15,21 €
Each
Aantal stuks
600:5 40mm Base Mounted - - - - - - - - - 62 x 40 x 78 mm -
RS-stocknr. 886-2203
FabrikantnummerXM20-375141S000000
FabrikantSifam Tinsley
27,76 €
Each
Aantal stuks
800:5 60mm Base Mounted - - - - - - - - - 86 x 45 x 110 mm -
RS-stocknr. 886-2247
FabrikantnummerXM24-445161S000000
FabrikantSifam Tinsley
44,05 €
Each
Aantal stuks
2000:5 100mm Base Mounted - - - - - - - - - 140 x 45 x 155 mm -
RS-stocknr. 136-6359
FabrikantnummerXM07-205051S000000
FabrikantSifam Tinsley
10,71 €
Each
Aantal stuks
125:5 26mm - 70mm - 50mm - 125A 44.5mm 5 A - - 50 x 44.5 x 70 mm -
RS-stocknr. 123-6725
FabrikantnummerXN45-315051S000000
FabrikantSifam Tinsley
31,03 €
Each
Aantal stuks
400:5 31mm Base Mounted - - - - 400A - 5 A - - 141 x 38 x 102.5 mm MCCB