Datakom DPR-350 Series, Руководство пользователя

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DPR-350 User Manual Ver_01 Firmware V-1.0
CORRECT CT CONNECTIONS
Suppose that each phase of the utility mains are loaded with 100 kW. The power factor (PF) for the load
is as follows:
kW kVAr kVA pf
Phase L1 100.0 0.0 100 1.00
Phase L2 100.0 0.0 100 1.00
Phase L3 100.0 0.0 100 1.00
Total 300.0 0.0 300 1.00
EFFECT OF POLARITY REVERSAL
The utility mains is still loaded with 100 kW on each phase. The load power factor (PF) on Phase L2 will
show -1.00 due to reverse CT polarity.
As a result, total load power displayed will be 100 kW.
Measured values are as follows:
kW kVAr kVA pf
Phase L1 100.0 0.0 100 1.00
Phase L2 -100.0 0.0 100 -1.00
Phase L3 100.0 0.0 100 1.00
Total 100.0 0.0 300 0.33