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

41 - 60 van 711 producten worden weergegeven
Resultaten per pagina
Omschrijving Prijs 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-stocknr. 914-5326
FabrikantnummerCT140F-600/5-2.5/1-31
FabrikantHOBUT
€ 49,57
Each
Aantal stuks
- 31mm - - - - - - -30°C +80°C 140 x 90 x 38 mm - Foot CT140
RS-stocknr. 287-3153
FabrikantnummerCT151M60/5-2.5/1
FabrikantHOBUT
€ 14,79
Each
Aantal stuks
60:5 14mm Universal Mounted 75mm 54.5mm 68mm - - -20°C +70°C - - - -
RS-stocknr. 914-5275
FabrikantnummerCT160-5-H7
FabrikantHOBUT
€ 23,45
Each
Aantal stuks
- - - - - - - - -30°C +85°C 60 x 43 x 85 mm - DIN Rail Series 16
RS-stocknr. 250-0142
FabrikantnummerTRA12UN100
FabrikantCarel
€ 11,90
Each
Aantal stuks
- - - 47mm 58mm 33mm - - - - - 12/24Vac controllers Surface Mount -
RS-stocknr. 913-9731
FabrikantnummerMETSECT5CC005
€ 33,13
Each
Aantal stuks
50:5 21mm Tropicalise - - - - - -25°C +60°C 65 x 44 x 30 mm - DIN Rail -
RS-stocknr. 331-339
FabrikantnummerCT132M100/5-2.5/1
FabrikantHOBUT
€ 14,55
Each
Aantal stuks
100:5 21mm DIN Rail Mounted 65mm 45mm 30mm - - -30°C +85°C - - - -
RS-stocknr. 173-0064
FabrikantnummerACX-1050
FabrikantNuvotem Talema
€ 2,543
Each (In a Box of 240)
Aantal stuks
- - - - - - 50A - -40°C +85°C 23.8 x 23.8 x 11.12 mm - - -
RS-stocknr. 287-3131
FabrikantnummerCT151M40/5-2.5/3
FabrikantHOBUT
€ 15,08
Each
Aantal stuks
40:5 14mm Universal Mounted 75mm 54.5mm 68mm - - -20°C +70°C - - - -
RS-stocknr. 914-5317
FabrikantnummerCT140F-400/5-2.5/1-31
FabrikantHOBUT
€ 49,57
Each
Aantal stuks
- 31mm - - - - - - -30°C +80°C 140 x 90 x 38 mm - Foot CT140
RS-stocknr. 775-2701
FabrikantnummerCTSCMICRO19-100/5-T-S
FabrikantHOBUT
€ 48,74
Each
Aantal stuks
- - - 78mm 58mm 49mm - - -30°C 55°C - - - -
RS-stocknr. 123-6730
FabrikantnummerXS01-225221S 000000
FabrikantSifam Tinsley
€ 36,15
Each
Aantal stuks
150:5 33 x 23mm Clip Fit - - - - - - - 93 x 40 x 106 mm - Surface Mount Omega10
RS-stocknr. 715-7077
Fabrikantnummer56T100C
€ 1,38
Each
Aantal stuks
- - - - - - 10A - -40°C +85°C 16.79 x 8.89 x 20.19 mm - Through Hole -
RS-stocknr. 611-8602
FabrikantnummerK8ACCT200L
FabrikantOmron
€ 67,25
1 Box of 1
Box(es)
- 30mm Surface Mounted 81.5mm 76mm 20mm - - - - - - - -
RS-stocknr. 537-4542
FabrikantnummerAC-1050
FabrikantNuvotem Talema
€ 3,57
Each
Aantal stuks
- - - - - - 50A - -40°C +120°C 34.9 x 14.3 x 34.9 mm - PCB Mount -
RS-stocknr. 124-3898
FabrikantRS PRO
€ 1,96
Each
Aantal stuks
- - - - - - 5A - -40°C +120°C 17.2 x 9.53 x 20.4 mm - PCB Mount -
RS-stocknr. 173-0215
FabrikantRS PRO
€ 1,762
Each (In a Box of 351)
Aantal stuks
- - - - - - 5A - -40°C +120°C 17.2 x 9.53 x 20.4 mm - PCB Mount -
RS-stocknr. 173-0061
FabrikantnummerAC-1100
FabrikantNuvotem Talema
€ 2,878
Each (In a Box of 27)
Aantal stuks
- - - - - - 100A - -40°C +120°C 44.5 x 14.3 x 44.5 mm - Through Hole -
RS-stocknr. 106-8537
Fabrikantnummer56T100C
€ 1,352
Each (In a Tube of 25)
Aantal stuks
- - - - - - 10A - -40°C +85°C 16.79 x 8.89 x 20.19 mm - Through Hole -
RS-stocknr. 729-5517
FabrikantnummerAC-1100
FabrikantNuvotem Talema
€ 4,31
Each
Aantal stuks
- - - - - - 100A - -40°C +120°C 44.5 x 14.3 x 44.5 mm - Through Hole -
RS-stocknr. 832-9851
FabrikantnummerL01-8002
FabrikantAlttec
€ 12,45
Each
Aantal stuks
100:1 21.5mm Clip Fit 65mm 45mm 30mm - - - +40°C 65 x 45 x 67 mm - - -
Related Products
The 5600 series of current sense transformers are ...
Description:
The 5600 series of current sense transformers are designed to monitor AC currentsThe transformers can be used for high frequency current sensingSuitable for switched-mode power supplies, motor control, and electronic lighting ballastsAvailable with cable hole primary and single or centre ...
Window type current transformers from Siemens offer a ...
Description:
Window type current transformers from Siemens offer a wide current range, depending on model. • Screw-type terminals• 50-1500 A current range• IP20 protection.
Primary current range 50-150A1% accuracyOperating frequency 50/60HzTurns ratio ...
Description:
Primary current range 50-150A1% accuracyOperating frequency 50/60HzTurns ratio 2500:1Rated burden resistance 33 ΩDielectric with stand voltage 4KVrmsOperating temperature range -40 to +85ºCAll materials UL94-V0.
RS Pro toroidal current sensors are fully encapsulated ...
Description:
RS Pro toroidal current sensors are fully encapsulated for optimal mounting to printed circuit boards. Commonly used to detect branch circuit overload, load drop or shut down, accurate and easy to use. These RS Pro current sensors operate as the ...