Current and Voltage Transducer Vs Current and Voltage Transformer

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Transducer is a generic term used for a device which transforms a signal (such as current voltage, temperature etc) to a corresponding (ratio) signal such as current or voltage, while the current (or voltage) transformer is a device which transforms a current (or voltage) signal to a corresponding current (or voltage) signal. So, current (or voltage) transformer is a type of transducer.

So, all current (or voltage) transformers are the current (or voltage) transducers but all current (or voltage) transducers are not the current (or voltage) transformers.

- MS

Transducer needs excitation like 50Vdc and when a voltage(0-400V) from a VT or a current(0-5A) from a CT is applied, it will give a signal(4-20mA) which when given to a corresponding current/voltage transducer in another location will indicate the actual current or voltage at the site.