Extech Instruments 380803

380801-380803-EN v7.2 07/13
9
Using Current Transformers (CT) with 2 Power Analyzers
Measure W
RS
and W
TS
(RST phases must be correctly identified)
1. Connect the R-Phase to the black terminal of the input voltage of power analyzer 1.
2. Connect the S-phase to the red terminal of the input voltage of power analyzer 1.
3. Connect the
k
terminal of CT1 to the R-phase.
4. Connect the
l
terminal of CT1 to the black terminal of the output load of power
analyzer 1.
5. The Watt reading of the power analyzer 1 is W
RS
6. Connect the T-phase to the black terminal of the input voltage of power analyzer 2.
7. Connect the S-phase to the red terminal of the input voltage of power analyzer 2.
8. Connect the
k
terminal of CT2 to the R-phase.
9. Connect the
l
terminal of CT2 with the black terminal of the output load of power
analyzer 1.
10. The Watt reading of the power analyzer 2 is W
TS