Current Transformers

Current transformers or (CT’s) are instruments that are used to transform the current from a high current into a lower current so that the power can then be used for measuring and controlling. The transformers consist of a core, a primary and a secondary winding.RS Components offer an extensive range of highly accurate CT’s in various transformer types, current ratings, CT ratio supply voltages and mounting types to suit every application. Supplied by industry-leading brands including Siemens, Murata Power Solutions LEM and of course RS PRO.

How does a current transformer work?

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.

Types of current transformer

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.

Where would I use a current transformer?

CT's are used in a wide range of industrial and commercial measurement applications. Some of the most common are:Generating stationsElectrical substationsCommercial electric power distributionElectrical panels


...
顯示內容 隱藏內容

篩選條件

正在檢視 1 - 20,共 1094 項產品
Results per page
Description Price 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庫存編號 499-5536
製造零件編號AP 50 B10
BrandLEM
TWD4,317.00
單位
50:1 18mm - Closed Loop 24 V dc 50A - 69mm -20°C 67mm +60°C 55mm - -
RS庫存編號 331-474
製造零件編號CT132M50/5-1/1
BrandHOBUT
TWD478.00
單位
50:5 21mm DIN Rail Mounted - - 50A 5 A 65mm -30°C 45mm +85°C 30mm - -
RS庫存編號 331-597
製造零件編號CT132M40/5-1/3
BrandHOBUT
TWD524.00
單位
40:5 21mm DIN Rail Mounted - - 40A 5 A 65mm -30°C 45mm +85°C 30mm - -
RS庫存編號 497-271
製造零件編號HTR 200-SB
BrandLEM
TWD4,497.00
單位
400:1 21mm - Open Loop 12 → 15 V 400A - 69mm -10°C 46mm +70°C 21.5mm - -
RS庫存編號 207-2984
製造零件編號LA 205-S
BrandLEM
TWD3,641.00
單位
300:1 22.7 x 17.4mm - Closed Loop 12 → 15 V 300A 100 mArms 56.3mm -10°C 66mm +85°C 56.5mm - -
RS庫存編號 435-8628
製造零件編號HX 03-P
BrandLEM
TWD425.00
單位
9:1 0.6mm - Open Loop ±15 V 9A - 20mm -25°C 19mm +85°C 15.4mm - -
RS庫存編號 886-2128
製造零件編號XM02-195071S000000
TWD393.00
單位
120:5 21mm Base Mounted - - - - - - - - - 45 x 40 x 65 mm -
RS庫存編號 180-7357
製造零件編號LA 55-P
BrandLEM
TWD1,236.00
單位
70:1 - - Closed Loop 12 → 15 V 70A 50 mArms 27.6mm -40°C 36.6mm +85°C 14.45mm - -
RS庫存編號 729-5520
製造零件編號AC-1200
TWD312.00
單位
200:1 - - - - 200A - - -40°C - +120°C - 55.6 x 20.6 x 55.6 mm -
RS庫存編號 173-0060
製造零件編號AC-1200
TWD280.80
個 (以毎盒:27)
單位
200:1 - - - - 200A - - -40°C - +120°C - 55.6 x 20.6 x 55.6 mm -
RS庫存編號 731-5270
製造零件編號HTA 600-S
BrandLEM
TWD2,068.00
單位
600:1 32mm - Open Loop ±15 V 600A - 70mm -25°C 90mm +85°C 27.5mm - -
RS庫存編號 399-7317
製造零件編號AS-103
TWD69.00
單位
15:1 - - - - 15A - - -40°C - +120°C - 17.2 x 20.4 x 9.53 mm -
RS庫存編號 286-361
製造零件編號LV 25-P
BrandLEM
TWD2,094.00
單位
14:1 - - Closed Loop 12 → 15 V 14A 25 mA 16.45mm 0°C 26mm +70°C 29.2mm - -
RS庫存編號 301-9489
製造零件編號HAS 50S
BrandLEM
TWD911.00
單位
150:1 20.4 x 10.4mm - Open Loop 15 V 150A - 30mm -10°C 40mm +80°C 30mm - -
RS庫存編號 532-9148
製造零件編號HAIS 100-P
BrandLEM
TWD745.00
單位
300:1 15 x 8mm - Open Loop 5 V 300A - 29.5mm -40°C 33mm +85°C 14mm - -
RS庫存編號 207-2912
製造零件編號HTA 400-S
BrandLEM
TWD2,271.00
單位
1000:1 32mm - Open Loop 15 V 1000A - 70mm -25°C 90mm +85°C 27.5mm - -
RS庫存編號 751-1617
製造零件編號93482 P1
TWD673.00
單位
100:1 - - - - 100A - - -20°C - +70°C - 70 (Dia.) x 36 mm -
RS庫存編號 207-2940
製造零件編號HTA 1000-S
BrandLEM
TWD2,821.00
單位
1000:1 32mm - Open Loop 15 V 1000A - 70mm -25°C 90mm +85°C 27.5mm - -
RS庫存編號 321-6292
製造零件編號LAH 50-P
BrandLEM
TWD728.00
單位
50:1 - - Closed Loop 12 → 15 V 50A 25 mArms 21mm -25°C 33.3mm +85°C 14.93mm - -
RS庫存編號 914-5313
製造零件編號CT132TRAN20A-5/10V
BrandHOBUT
TWD1,226.00
單位
20:1 21mm - - 15 → 30 V 20A - 65mm -15°C 45mm +50°C 30mm - -