instrument transformer is a variable flux machine?

An instrument transformer is not classified as a variable flux machine; rather, it is a type of transformer specifically designed for measurement and protection in electrical systems. It operates on the principle of electromagnetic induction to step down high currents or voltages to lower, more manageable levels for measurement purposes. Common types include current Transformers (CTs) and voltage transformers (VTs), which maintain a constant ratio between primary and secondary sides for accurate readings. Variable flux machines, on the other hand, refer to devices like variable reluctance motors that actively change magnetic flux to control operation.