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.


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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. 913-9731
FabrikantnummerMETSECT5CC005
€ 29,82
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Aantal stuks
50:5 21mm Toroidal Ring - - - - - -25°C +60°C 65 x 44 x 30 mm - DIN Rail -
RS-stocknr. 913-9734
FabrikantnummerMETSECT5CC013
€ 33,64
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125:5 21mm Toroidal Ring - - - - - -25°C +60°C 65 x 44 x 30 mm - DIN Rail -
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RS-stocknr. 198-4464
FabrikantnummerMETSECT5CC015
€ 69,76
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150:5 21mm Tropicalise 65mm 44mm 37mm 150A 5 A -25°C +60°C - - DIN rail -
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RS-stocknr. 198-4496
FabrikantnummerMETSECT5MA040
€ 86,69
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400:5 27mm Tropicalise 80mm 56mm 63mm 400A 5 A -25°C +60°C - - DIN rail -
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RS-stocknr. 198-4505
FabrikantnummerMETSECT5MC060
€ 114,77
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600:5 32mm Tropicalise 95mm 70mm 65mm 600A 5 A -25°C +60°C - - DIN rail -
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RS-stocknr. 198-4472
FabrikantnummerMETSECT5DB125
€ 182,53
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1250:5 - Tropicalise 160mm 99mm 78.4mm 1.25kA 5 A -25°C +60°C - - Surface Mount -
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RS-stocknr. 198-4491
FabrikantnummerMETSECT5DH200
€ 194,74
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Aantal stuks
2000:5 - Tropicalise 129mm 98mm 40mm 2kA 5 A -25°C +50°C - - Surface Mount -
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RS-stocknr. 198-4489
FabrikantnummerMETSECT5DH125
€ 171,31
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Aantal stuks
1250:5 - Tropicalise 129mm 98mm 40mm 1.25kA 5 A -25°C +50°C - - Surface Mount -
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RS-stocknr. 198-4462
FabrikantnummerMETSECT5CC006
€ 66,55
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Aantal stuks
60:5 21mm Tropicalise 65mm 44mm 37mm 60A 5 A -25°C +60°C - - DIN rail -
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RS-stocknr. 198-4494
FabrikantnummerMETSECT5MA025
€ 83,28
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Aantal stuks
250:5 27mm Tropicalise 80mm 56mm 63mm 250A 5 A -25°C +60°C - - DIN rail -
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RS-stocknr. 198-4467
FabrikantnummerMETSECT5DA080
€ 120,39
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800:5 - Tropicalise 94mm 90mm 87mm 800A 5 A -25°C +60°C - - Surface Mount -
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RS-stocknr. 198-4500
FabrikantnummerMETSECT5MB040
€ 91,80
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Aantal stuks
400:5 26mm Tropicalise 85mm 60mm 63mm 400A 5 A -25°C +60°C - - DIN rail -
Nieuw
RS-stocknr. 198-4485
FabrikantnummerMETSECT5DE100
€ 153,99
Each
Aantal stuks
1000:5 - Tropicalise 129mm 135mm 85mm 1kA 5 A -25°C +50°C - - Surface Mount -
Nieuw
RS-stocknr. 198-4465
FabrikantnummerMETSECT5CC025
€ 75,26
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Aantal stuks
250:5 21mm Tropicalise 65mm 44mm 37mm 250A 5 A -25°C +60°C - - DIN rail -
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RS-stocknr. 198-4497
FabrikantnummerMETSECT5MB025
€ 88,20
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250:5 26mm Tropicalise 85mm 60mm 63mm 250A 5 A -25°C +60°C - - DIN rail -
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RS-stocknr. 198-4490
FabrikantnummerMETSECT5DH150
€ 180,32
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Aantal stuks
1500:5 - Tropicalise 129mm 98mm 40mm 1.5kA 5 A -25°C +50°C - - Surface Mount -
Nieuw
RS-stocknr. 198-4471
FabrikantnummerMETSECT5DB100
€ 173,38
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Aantal stuks
1000:5 - Tropicalise 160mm 99mm 78.4mm 1kA 5 A -25°C +60°C - - Surface Mount -
Nieuw
RS-stocknr. 198-4484
FabrikantnummerMETSECT5DD150
€ 165,47
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Aantal stuks
1500:5 - Tropicalise 116mm 96mm 78.4mm 1.5kA 5 A -25°C +50°C - - Surface Mount -
Nieuw
RS-stocknr. 198-4470
FabrikantnummerMETSECT5DA150
€ 135,50
Each
Aantal stuks
1500:5 - Tropicalise 94mm 90mm 87mm 1.5kA 5 A -25°C +60°C - - Surface Mount -
Nieuw
RS-stocknr. 198-4510
FabrikantnummerMETSECT5VV500
€ 1.154,82
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Aantal stuks
5000:5 - Tropicalise 242mm 175mm 110mm 5kA 5 A -25°C +50°C - - Surface Mount -