VAR meter is used to measure the reactive power.<\/span> VAR meter also has four terminals.<\/span> For the measurement of reactive power meter then splicing the same as the wattmeter.<\/span> Constant measuring scaled in units of VAR or KVAR.<\/span> VAR meter commercially available in two types: for measurement in single-phase systems (has 4 terminals) and to the measurement of three-phase systems (having 10 terminals).<\/span><\/p>\n For the measurement of the apparent power to do indirectly that by multiplying each voltage and current measurement results.<\/span> Cosphi-meter<\/strong><\/span>
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\n Figure 7.19-meter Typical VaR and kVAr-meter<\/span><\/p>\n
\n Power factor meter or commonly known as cosphi meter is an instrument to measure the power factor.<\/span> These instruments are the same as the wattmeter has 4 terminals.<\/span> Connection of this instrument is the same as the watt meter.<\/span> The scale of measurement was made in accordance with the nature of the electrical load is inductive and capacitive.<\/span> So there are two large-scale systems that scale to resistive load and scale for inductive loads or capacitive loads.<\/span>
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\n Figure 7.20 Construction Cosphimeter electrodynamic<\/span><\/p>\n