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WATT TRANSDUCER
WATT TRANSDUCER
GENERAL The SWARTZ® Watt Transducer is a high performance, solid-state unit specifically developed to meet requirements for supervisory control and date acquisition (SCADA) systems. The transducer is ruggedly constructed for the transit substation environment and operates from the DC “housekeeping” battery supplies without the use of separate AC inverters.
DESCRIPTION The Watt Transducer is constructed on a flanged base and may be mounted in any orientation. Electrical connection is via screw terminal barrier strips. “Gain” and “Zero” adjustment trimpots are located on the top cover for calibration or for setting intentional offsets. Voltage and current are multiplied in the high voltage section for highest accuracy and the watts output is fed to a full wave FET chopper that provides high voltage isolation between feeder circuits and current loop output. The output is a bi-polar current source and tracks the input signal with current feedback located in the positive output for best performance.
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