UPM307
3 phases, 2 wires, 1 current transformer (3.2.1)
direct connection connection with voltage transformer
single phase (1ph)
direct connection
WARNING!
Check that:
1. if the instrument must carry out bi-directional measurements to obtain correct measurements, the
connections must respect the polarities.
2. the connections are made according to the diagrams in the following section, respecting the cyclic
order of phases (important: L1 of the voltage input = L1 of the current input)
3. when voltage or current transformers (PT / CT) are used, in the input and output polarities must be
respected.
4. before disconnecting current input the load power supply is cut off.
If this is not possible, the secondary CT must be short-circuited.
3
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