All electrical devices work properly without any failure, if input power is well within set limits of electrical properties. So Power Quality Study determines the health of the electrical to load ends. Without the proper power, an electrical device (or load) may malfunction, fail prematurely or not operate at all. There are many ways in which electric power can be of poor quality and many more causes of such poor quality power. The quality of electrical power may be described as a set of values of parameters, such as:

• Continuity of service
• Variation in voltage magnitude.
• Transient voltages and currents
• Harmonic content in the waveforms for AC power.

All these unwanted parameters can increase in power consumption, heating of equipments and wiring, malfunctioning or even damage.

Scope of work
Three Phase Power Quality Analyzer will be used for the following, under scope of Power Quality Audit:

Harmonic study

• Identify various Types of harmonics.
• Calculation for Total harmonic Distortion.

 Power Factor Study

• Running Power factor in the facility at main incomer.
• Identify ways to improve power factor.

 Energy consumption study

• Review of Single line diagram.
• Review of connected load.
• Energy consumption at possible load ends and total energy input.

 Phase voltage and current unbalance

• Measurement of input current and voltage.
• Variation of current and Voltages between phases.
• Comparison of the unbalancing with the prescribed limits.

 Calculation for Line loss depending upon the available data