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Understanding and Using Current Transformers Slide 4

Using a CT for current monitoring has a number of advantages. A CT has no effect on the conductor it is monitoring as it does not cause losses, voltage drops, or additional heating. It is relatively easy to install as it requires no interruption of the circuit, unlike a sense resistor. Particularly at higher current levels, it offers a convenient and relatively easy implementation. It is highly stable in operation and inherently safe as isolation to several kV is offered as standard. The use of high grade silicon steel cores at line frequency allows very accurate operation in compact sizes.

PTM Published on: 2016-02-24