Ct And Pt Measurement - Extech Instruments PQ3470-2 User Manual

5.5 Current (CT) / Potential (PT) Transformer Measurement
1. Power the instrument ON by pressing the 'Power' key (item 3-7; Section 3 diagrams), and
then press the '1Φ 3Φ' key (item 3-22) to select the 3Φ 4W system, the selected name of
the system will appear on the bottom left hand side of the display.
2. Connect the line voltage L1, L2, L3 and Vn to the V1, V2, V3 and N terminals of the
instrument
3. Connect the three (3) Clamps (A1, A2, A3) to the conductors A1, A2, A3
4. Connect the Clamps (A1, A2, A3) to the meter's A1, A2, A3 terminals
5. The related measurement factors will appear on the display
6. Measurement definitions can be found in Section 5-15
800.561.8187
Figure 5-5
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