Detailed Energy Auditing

Detailed Energy Audit is a comprehensive audit and results in a detailed energy project implementation plan for a facility, since it accounts for the energy use of all major equipments. It considers the interactive effects of various benchmark projects and offers the most accurate estimate of energy savings and cost.It includes detailed energy cost saving calculations and project implementation costs.

Electrical & Thermal Energy Auditing

What we do as Energy Auditors

Analyzing the performance of Complete Electrical Systems in the Organization

  • Transformers
  • Captive Power Generation Systems
  • Transmission & Distribution Cables , Bus Bars, Bus Ducts, etc
  • MV, LV Panels and all Switch Boards
  • Power Factor Correction Panels
  • Lighting Systems
  • Metering, Control and Protection Equipments
  • Motors, Drives and Starters
  • Power Backup and Power Conditioning Equipments
  • Earthing and Lightning Protection
  • IT Equipments, etc
  • Boilers
  • Furnace
  • Steam Distribution System
  • HVAC (Heating / Ventilation / Air Conditioning System)
  • Chillers
  • Refrigeration System
  • Pumps, Fans & Blowers
  • Compressors, etc

Harmonics Analyzing

What we do as Harmonics Analyst

Our Harmonics Analyzing kit is integrated with customized software and able to log the complete details of electrical parameters for every second.

  • Analyze level of harmonics at various feeder level during peak load
  • Analysis includes determination of THD (Total Harmonic Distortion)
  • A report will be created based on the above analysis for each feeder identified for analyzing the harmonic values.
  • Harmonics Analyzing kit with a meter will measures Total Harmonic Distortion at any given point – Both Voltage and Current [THD]
  • Simultaneously the kit will measure the breakup of THD in 3rd, 5th, 7th, 9th, 11th, 13th, 15th and Upto 63rd Order by configuring of meters.
  • In most of the cases, the harmonics level shall be falling within the above range.
  • Shall also measure the various instantaneous electrical parameters at that point of time including below which we could use for analyzing purposes and determine the quality of power.

After Analyzing of Harmonics in the Electrical Systems

A complete report will be generated based on the above parameters with time stamp. We propose to take samples of the above instantaneous values for specific intervals at each feeder during the peak load periods. Once we understand the pattern of harmonics in the specified feeder, we will analyze the output to determine whether filters are required to reduce the level of harmonics.

Harmonics Rectification:

Based on our report, we shall be able to suggest the Harmonics Filters depends on the Harmonics Level in Electrical System.


Our Harmonics Analyzing kit has been Tested and Certified by The Government Electrical Standards Laboratory (GESL), attached to the Office of the Chief Electrical Inspector to Government, Chennai an National Accreditation Board for Testing and Calibration Laboratories (NABL), Government of India.

What is Harmonics?

Harmonics are multiples of the fundamental frequency of an electrical power system.

  • For example, the fundamental frequency is 50 Hz, and then the 5th harmonic is five times that frequency, or 250 Hz.
  • The substantial increase of electronic devices in an electrical distribution system causes Harmonics in Electrical System.

Harmonics are a growing concern in the management of electrical systems today. Designers are requested to pay more and more attention to energy savings and improved availability of electricity. But there is still a need for more explanation, in order to dissipate confusion and misinterpretation. Power electronic devices have become abundant nowadays due to their capabilities for precise process control and energy savings benefits. However, they also bring drawbacks to electrical distribution systems. The presence of harmonics in electrical systems means that current and voltage are distorted and deviate from sinusoidal waveforms.

Major Equipments that creates Harmonics

Non-linear loads

  • Variable Frequency Drives (VFD) AC & DC Drives
  • Variable Speed Drives (VSD)
  • Inverters
  • Soft Starters
  • AC - DC Converter Equipments
  • HVAC Systems
  • Induction Furnace and Arc Furnace
  • Welding machines
  • CNC Machines
  • Electronic equipment such as Computers, Printers, Scanners, etc
  • Switching Equipments and Electronic circuits
  • SMPS, Battery chargers
  • UPS and Power Conditioning Equipments
  • Large Nos. of CFL, Fluorescent lights with electronic ballast
  • Thyristors, and many more non-linear equipments

Effects of Harmonics in Electrical Systems

  • Indirect Higher Electricity Bills (Due to Poor Efficiency of Equipments)
  • In-efficient performance of Electrical Equipments
  • Premature Transformer Failures
  • Neutral Conductor and Terminal Failures
  • Circuit Breakers Tripp Frequently (MCB's, RCCB's, MCCB's, etc)
  • Capacitor Bank Failures which leads to P.F penalty
  • Malfunctioning of Motors or Failures
  • Frequent Maintenance of Equipments
  • Over Heating caused in Transformers , DG's, Cables, Bus Bars, Switches, Lugs, etc
  • Conductor Failures
  • Fuses Blowing
  • Electronic Equipments Failures
  • Flickering or Blinking of Lighting System
  • Over Heating of Metal Parts of the Equipments, etc
  • Losses in Distribution System
  • Poor Power Quality in Distribution,
  • Increases I^2 R Losses,
  • Reduces life of equipments,
  • Communication Equipments Failures, etc

Power Quality Analysis

Power quality determines the fitness of electrical power to consumer devices. Synchronization of the voltage frequency and phase allows electrical systems to function in their intended manner without significant loss of performance or life.

In its broadest sense, power quality is a set of boundaries that allows electrical systems to function in their intended manner without significant loss of performance or life. The term is used to describe electric power that drives an electrical device and the device’s ability to function properly with that electric power. Without the proper power, an electrical device 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.

Our highly experienced electrical team will undertake survey and analyze the electrical installations, for the purpose of establishing the quality of the supplies. Using the suitable equipment we will able to identify potential issues with the power quality and reduce your energy losses.

Electrical Safety Auditing
  • Our Core team have come across large number of Electrical Inspections as per Safety Norms and they are practically experienced for 3 decades.
  • We carryout Inspection of complete Electrical Installations among the premises as per Indian Electricity Rules, National Electric Code for Electrical Installation, Indian Standards and State CEIG Norms through In-House Technical Experts.
  • Technical Report will be submitted on recommendation for complete Safety Electrical System

Energy Management System

The EMS is the part of our Energy Audit, as we Navitas has been committed to provide ethical solution to our stakeholders we would like to conduct Energy Audit process on continuous basis, through which we shall be able to identify the maximum opportunities to save energy among every individual equipments.

Our EMS has following features

  • No extra cabling is required across the building from Energy meter to Centralized computer
  • No extra service providers, so no recurring costs
  • Technology use the existing Power Line to communicate the energy consumption details to centralized computer
  • Integrated with a web-based application which can be used in internet or intranet
  • EB – KWH and DG – KWH measured separately
  • PF – EB and PF – DG measured separately
  • EB Running Hours and DG running hours per day
  • (Real Time Clock) RTC based system
  • Can see instant voltage / current values
  • Can Monitor THD (Total Harmonic Distortion) values
  • Hardware can be retrofitted to existing static energy meter
  • Minimal implementation time
  • No meter reading personnel’s required
  • No data collection cost
  • Energy consumption history
  • Can include Fuel consumption of diesel tank in the application
  • Maintenance cost is reduced

"We can never save what we don’t measure."