What is apparent power, active power, the difference between them - Database & Sql Blog Articles

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Active power

P=3UφIφCOSφ=√3UICOSφ

inspecting power
S=3UφIφ=√3UI

Apparent power, active power, and reactive power form a right triangle, which we call a power triangle, so

S=√P2+Q2

COSφ=P/Q

COSφ is the power factor and φ is the phase angle.
COSφ power factor is an important technical indicator for electrical equipment. The power factor in the circuit is determined by the relative magnitude of the resistance and reactance included in the load component.
The power factor of a typical load is between 0.7 and 0.9, sometimes lower, and the low power factor has a detrimental effect on system operation:
1. The capacity of the power supply equipment cannot be fully utilized;
2. When the active power and load voltage drawn by the load are constant, the lower the power factor, the larger the required current.