Etricals Engineers Pvt Ltd

Mugalivakkam, Chennai, Tamil Nadu

Erection is preparing the physical side of the site for the new piece of kit and fitting it in place. Installation is the preparation of the kit for working. Commissioning is the final act before putting the new piece of kit into use; it often involves testing the kit as an individual piece and checking that its fully integrated into its final system. I.e. a new generator has got working protection and change over alarms which work with the existing switchboard.Installation of a system or machinery up to the point of being able to start running is erection.Commissioning is preparing for running or taking into use of the installed system or machinery by making preliminary tests and checks (pre-commissioning) and initially running the system or machinery or taking it into use while checking and setting all of its running parameters in accordance with its design (hot commissioning).Commissioning is a term that spans a wide range of general meanings. Most of the time it refers to Plant Commissioning.Plant commissioning is the process of verifying, in new construction, that all the subsystems for HVAC, Plumbing, Electrical, Fire/Life safety, Building Envelopes, Interior Systems (example laboratory units), cogeneration, utility plants, sustainable systems, Lighting, Wastewater, Controls, and Building Security achieve the owner's project requirements as intended by the plant owner and as designed by the plant architects and engineers. Plant commissioning is a quality-focused process necessary for both non-complex and complex modern construction projects.

Harmonics are produced by non-linear loads that absorb non-sinusoidal current. The most common loads, both in industrial surroundings and domestic ones, are the following ones: Frequency / Variable speed drivesDischarge lamps (high pressure sodium vapour lamp, mercury vapour lamp, low consumption, fluorescent, etc.)RectifiersAC/DC ConvertersArc weldingInduction ovensUPSComputers and laptops Etc.Within th

Testing of a relay to ensure it meets requirements before implementation into the service. It will test every feature that intends to use in the relay with application of secondary volts and currents to simulate a series of realistic system fault conditions. A by product of this testing will be test plan templates for commissioning and maintenance testing. Commissioning testingtesting toverify an individual relay scheme works and that the settings applied are correct as per the protection setting request (psr).Validate the relay scheme is fit for purpose in the particular installation.Commissioning testing in the context of this document encompasses the followingsystem testing testing using secondary injection based on system parameters in primary values.Element testing testing using secondary injection to check the accuracy of individual relay elements based on secondary values.Logic testing testing to confirm the logic operates as per logic diagrams and the elements enabled as per the psr.Maintenance testingperiodic or reliability centred testing of relays to