Power Engineering

Power Quality Analysis &
Solutions

Comprehensive power quality analysis, harmonic filtering, surge protection, and voltage regulation to eliminate equipment damage and optimize electrical infrastructure performance.

Schedule Power Study Download PQ Guide

$100B

Infrastructure disrupted globally from PQ

<5%

IEEE THD compliance target

99.99%

Voltage regulation accuracy

40%

Energy cost reduction achievable

Understanding Power Issues

What Is Power Quality?

Power quality refers to the electrical characteristics of voltage and current supplying your equipment. Ideally, power should be a pure 60 Hz (or 50 Hz) sine wave at the correct voltage. In reality, power is subject to numerous disturbances including harmonics, voltage sags, transients, and other anomalies that can impact equipment performance.

Common sources include utility supply issues, variable frequency drives, lightning strikes, utility faults, and motor starting. These disturbances can significantly affect sensitive electronics, reduce equipment lifespan, or cause immediate failures.

IEEE 519 Compliance

Power quality solutions that meet IEEE 519 THD current standard

Equipment Protection

Protecting sensitive electronics, transformers, PLCs, and control systems

Energy Efficiency

Reducing waste, improving power factor, and lowering energy bills

500+

Power Studies Completed

Common Power Quality Problems

Identify and mitigate electrical disturbances affecting your facility

Harmonic Distortion

Non-linear loads generate harmonic currents causing transformer overheating, neutral overloading, and equipment malfunction. THD >15% requires immediate mitigation.

Sources: VFDs, rectifiers, arc furnaces, SMPS

Voltage Sags & Swells

Brief voltage reductions (sags) or increases (swells) lasting milliseconds to seconds cause equipment resets, data loss, and production stoppages.

Causes: Utility faults, motor starting, capacitor switching

Transients & Surges

High-energy voltage spikes lasting microsecond durations degrade insulation, and cause immediate component failure.

Sources: Lightning, switching operations, ESD

Flicker & Fluctuations

Rapid voltage variations cause visible lamp flicker, annoy occupants, and stress electrical equipment with constant voltage variation.

Causes: Arc welders, large motor cycling, and ovens

Low Power Factor

Inductive loads (motors, transformers) draw reactive power, increasing apparent draw, I²R losses, and utility demand charges without doing useful work.

Impact: 3-30% higher energy bills, capacity reduction

Interruptions

Complete loss of voltage for seconds to hours causes production loss, data corruption, and requires coordinated equipment restart procedures.

Solutions: UPS systems, generator backup

Power Quality Solutions

Comprehensive mitigation strategies for all power quality issues

Harmonic Filtering

Active and passive filters reduce THD to <5% meeting IEEE 519 limits. Solutions include tuned LC filters, active harmonic filters (AHF), and isolation transformers.

Tuned LC filters for 5th/7th harmonics
Active filters for broad-spectrum mitigation
K-rated transformers for non-linear loads

Voltage Regulation

Automatic voltage regulators (AVR), tap-changing transformers, and CVT units maintain stable voltage ±1%, protecting against sags, swells, and brownouts.

Constant voltage transformers (CVT)
Electronic tap-switching regulation
Dynamic voltage restorers (DVR)

Surge Protection

Multi-stage surge protective devices (SPD) at service entrance, distribution, and point-of-use provide 100kA+ protection from lightning and switching transients.

Type 1 service entrance SPDs
Type 2 distribution panel protection
Type 3 point-of-use devices

Power Factor Correction

Capacitor banks and active PFC systems improve power factor to >0.95, eliminating utility penalties and reducing current draw by 20-40%.

Automatic capacitor bank controllers
Synchronous condensers for large motors
Active PFC for dynamic loads

Optimize Your Power Quality Today

Schedule a comprehensive power quality study to identify issues and receive customized mitigation recommendations from our certified engineers.

Call 1-800-POWER-QA Request Power Study

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1-800-POWER-QA

Email Us

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Support

24/7 Emergency Available

What Is Power Quality?

IEEE 519 Compliance

Power quality solutions that meet IEEE 519 THD current standard

Equipment Protection

Protecting sensitive electronics, transformers, PLCs, and control systems

Energy Efficiency

Reducing waste, improving power factor, and lowering energy bills

Power Quality Analysis &Solutions

What Is Power Quality?

Common Power Quality Problems

Harmonic Distortion

Voltage Sags & Swells

Transients & Surges

Flicker & Fluctuations

Low Power Factor

Interruptions

Power Quality Solutions

Harmonic Filtering

Voltage Regulation

Surge Protection

Power Factor Correction

Optimize Your Power Quality Today

Power Quality Analysis &Solutions

What Is Power Quality?

Common Power Quality Problems

Harmonic Distortion

Voltage Sags & Swells

Transients & Surges

Flicker & Fluctuations

Low Power Factor

Interruptions

Power Quality Solutions

Harmonic Filtering

Voltage Regulation

Surge Protection

Power Factor Correction

Optimize Your Power Quality Today

Power Quality Analysis &
Solutions

Power Quality Analysis &
Solutions