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

...
Read more Read less

Filters

Viewing 721 - 737 of 737 products
Results per page
Description Price 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 Stock No. 2509216119
Mfr. Part No.CST-1005
MYR27.10
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508934282
Mfr. Part No.02304
BrandSimpson
MYR515.70
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508933560
Mfr. Part No.37020
BrandSimpson
MYR244.16
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508973388
Mfr. Part No.CST206-1A
MYR26.66
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508973401
Mfr. Part No.CST206-3A
MYR26.66
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508934462
Mfr. Part No.01299
BrandSimpson
MYR284.20
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2552206145
Mfr. Part No.2CSG060100R1211 - TR2
BrandABB
MYR347.21
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508934456
Mfr. Part No.01297
BrandSimpson
MYR317.69
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508933611
Mfr. Part No.37025
BrandSimpson
MYR325.14
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2509299912
Mfr. Part No.ACST-259-1
MYR6.20
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508933598
Mfr. Part No.37023
BrandSimpson
MYR261.24
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508973394
Mfr. Part No.CST206-2A
MYR26.66
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508934440
Mfr. Part No.01298
BrandSimpson
MYR285.21
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508934428
Mfr. Part No.01293
BrandSimpson
MYR275.58
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2509216125
Mfr. Part No.CST-1010
MYR27.10
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508933633
Mfr. Part No.37001
BrandSimpson
MYR1,280.55
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508934478
Mfr. Part No.01300
BrandSimpson
MYR284.31
Each
units
- - - - - - - - - - - - - -
Related Products
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.
OMEGA XMER Current transformers are square type and ...
Description:
OMEGA XMER Current transformers are square type and encapsulated with UL94V-0 approved 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. Cost ...
Residual-current transformer for residual current monitoring Bushing opening ...
Description:
Residual-current transformer for residual current monitoring Bushing opening 140 mm Residual current 30 mA...40 A.
Pin-winding increases the primary current of the current ...
Description:
Pin-winding increases the primary current of the current transformer. Consequently, window-type current transformers Can also be used for low primary currents.