Power Quality and Harmonic Analysis
Voltage sags and swells, current harmonics and reactive power imbalance, measured where they reach your CNC machines, drives and other sensitive equipment. Carried out by Vinoth Electricals.
About this audit
The Quality of the Power, Not Only the Quantity
Electronic loads such as variable speed drives, CNC controls, rectifiers and UPS units draw current in short pulses instead of a smooth wave. Those pulses carry harmonics. Harmonics, and dips and rises in the supply voltage, can disturb sensitive equipment and shorten the life of motors and electronics. The analysis measures what the supply and the loads are doing, so that the cause of a problem can be found.
The analysis is carried out by Vinoth Electricals, engineers, consultants and contractors for 40 years (EA licence No. 2577). You send the enquiry to Ram Engineering, and we arrange it.
Carried out by
What the Analysis Checks
- Voltage sags and swells: short dips and rises in the supply voltage
- Current harmonics: the distorted current drawn by drives, rectifiers and other electronic loads
- Reactive power imbalance: how much reactive power each phase carries, and how unevenly
- The effect on your equipment: sensitive CNC machines and heavy drives, where the trouble usually shows first
Why it matters
How Poor Power Quality Shows Up
A voltage sag lasting a fraction of a second can be enough to reset a CNC control or trip a drive, and the stoppage looks like a fault in the machine. A swell can stress insulation and electronic parts.
Harmonic currents heat transformers, cables and motors more than the same current at the supply frequency would. They can overload neutral conductors and capacitor banks, and a capacitor bank fitted for power factor correction can resonate with the supply at a harmonic frequency.
These effects come and go with the load, so they show up only while the plant is working.
What You Get
The findings on voltage sags and swells, harmonics and reactive power at the points measured, and what each one points to, so that you can decide how to protect sensitive electronics and heavy motors.
Questions About Power Quality and Harmonic Analysis
Who carries out the analysis?
Vinoth Electricals, engineers, consultants and contractors for 40 years (EA licence No. 2577). Send your enquiry to Ram Engineering and we arrange it with them.
Our CNC machines trip without a clear reason. Can this help?
It can show whether the supply is involved. A sag or a swell recorded at the moment of a trip points to the supply; a steady supply at that moment points elsewhere, to the machine or its control.
How is this different from the electrical energy audit?
The energy audit looks at how much power the plant takes and where it goes. This analysis looks at the quality of that power: its voltage, its waveform and its balance between the phases. The two can be booked together.
Related Audits and Services
Electrical Energy Audit
Transformer loading, distribution and power factor, with the load on each phase logged over 24 to 48 hours.
Electrical Thermography
An infrared survey of panels, switchgear and transformers under load, to find hot spots before they fail.
Electrical and Safety Audit
Earthing, protection relays, breakers, panels and transformers tested at your site.
Ask About Power Quality and Harmonic Analysis
Tell us which equipment is affected and what happens to it. Rough answers are fine; we ask for the rest.
Request received. Your reference is {ref}. We reply during office hours, Monday to Saturday, 9.00 am to 5.30 pm. For a breakdown or a plant shutdown, call +91 99400 49505 at any time. Nothing is booked or ordered until we confirm scope, availability and terms in writing.Prefer to talk? Call +91 99400 49505 or WhatsApp us.