Reliable & Easy to Install

The clamp-on AC load current transducer is a non-contact current transducer for use in 50/60 Hz AC current measuring applications. Installation is easy; the transducer is clamped over the wire carrying the current to be measured and the two transducer secondary wires are connected to the monitoring instrument (typically a MAP product).

The transducer consists of a split ferrite ring that, when clamped together over a current-carrying AC wire, forms a simple transformer, with the ferrite forming the transformer core and the clamped wire (the wire through which current is measured) being the primary winding of the transformer. A 750 turn secondary winding is integral to the transducer and provides the output signal. Based on this turns ratio, a one amp current flowing in the clamped wire produces a 1.333 milliamp current in the secondary winding if the secondary is terminated into the recommended 75 ohm load. A voltage of 100 millivolts per sensed amp is developed across the load resistor.