Amprobe ACD-30P Clamp-On-Power-Meters Uživatelský manuál stáhnout pdf (Strana 10)

●Measuring 3-Phase 4-Wire

(3 4W) Power Parameters:

In both un-balanced and balanced load cases, 3-Phase 4-Wire (3

4W) systems,

measure the phase-to-neutral powers kW

and kW

of each phase separately as

illustrated. System (total) power kW

Total

is the summation of all three phase-to-neutral

powers. That is:

Total

= kW

+ kW

(for both un-balanced and balanced load cases)

In balanced load cases, 3-Phase 4-Wire (3

4W) systems, the system (total) power

parameters can be simplified to three times of any of the phase-to-neutral powers. That

is:

Total

= 3 x kW

(for balanced load cases only)

kVA

Total

= 3 x kVA

(for balanced load cases only)

kVAR

Total

= 3 x kVAR

(for balanced load cases only)

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Amprobe ACD-30P Clamp-On-Power-Meters Uživatelský manuál Strana 10