Meet the Cores

At the heart of a current transformer is a slab of magnetic material known as a magnetic core. to put it simply, the measurement mechanism wouldn't work without a magnetic core.

Enveloped by two upper layers of insulation and secondary windings, the magnetic core emits the magnetic field necessary to generate electromagnetic energy. Through the Hall Effect, the current transformer enables a hooked measuring device like an ammeter or voltmeter to get accurate readings. Solid and split-core transformers are known to employ magnetic cores.

Thinking Accuracy with Current Transformers

Accuracy is, and probably will always be, a contested subject. Even the readings on the most sensitive gauges ever made will be subject to factors beyond anyone's control. This is why it's reasonable to consider a margin of error every time you take a measurement, especially when it comes to currents.

Given that current transformers are always on the lookout for unusual energy spikes, accuracy must be their most defining feature. They don't have to be perfectly accurate, just accurate enough to confirm the readings and help managers make sound decisions. However, no one-size-fits-all transformer exists at present.