Vt Transformer And Wire Connection Of Direct Input Current (⑤); Vt Transformer And Wire Connection Of Ct Transformer (⑥) - UNI-T UTE310 User Manual

User's Manual
input terminal of EXT, and then connecting the input terminal of EXT to the sensor input of the
instrument, and finally connecting CT to the circuit to be tested.
Cautions
The measurement accuracy of this method is very rely on the accuracy of external sensor. If
use this way to measure the equivalent accuracy of current sensor, the measured data error
will be enlarged, so do not use this measurement method unless it is necessary.
4.2.5 Wire Connection of VT Transformer Input Voltage and Direct Input Current (⑤)
4.2.6 Wire Connection of VT Transformer Input Voltage and CT Transformer Input Current (⑥)
When the maximum current or voltage of the measuring object is over than the maximum
measurement range of the instrument, it must use the CT and VT before measuring.
When using this wire connection for measurement, connecting the secondary side of CT to the current
input terminal of power meter, and the secondary side of VT to the voltage input terminal of power
meter, and finally connecting CT and VT to the circuit to be tested.
The wire connection example is shown in the following figure.
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UTE310 Digital Power Meter
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