Grounding Issues and Noise

ABSTRACT

Electrical noise is one of the common power quality issues that affect commercial and industrial establishments. Noise can be classified in common mode and differential mode. Common mode or differential mode noise can have negative impact on operation of electronics and communication system. Noise also disturbs the quality of output from audio/video systems. Noise, common mode or differential mode is generated through electromagnetic interference (EMI), radio frequency interference (RFI) and grounding loops. In today’s digital economy, generation of noise cannot be avoided but with good design practices particularly grounding, ill effects of noise can be eliminated. Grounding plays very important role in elimination of noise. Improper grounding can cause increased voltage at neutral to ground resulting in malfunctioning of the sensitive equipment.

The case study shows financial impact of noise in a medical facility (Hospital). The hospital was not able to operate an ultra sound machine as image on the monitor was blurred to an extent that it was not possible to use it for any kind of diagnostic assesment. As they were not able to use ultra sound machine, hospital was losing revenue on a daily basis. After carrying out detailed study, the cause of the problem was identified and suitable mitigation techniques were adopted to resolve the problem.

DOWNLOAD RESOURCES

CS39-HOSP-2014-Grounding-Issues-and-Noise.pdf

Related POST

Reduction in kVAh Billing through Harmonic Mitigation

Conventional engineering terminology, which were as per linear load scenario are changing now with m..

Read more

Power Quality Awareness: Possibility of change

Your fitness-band can monitor your fitness in real time. Why can't we do the same thing with Power Q..

Read more

Distribution Utility Meet (DUM) on 29-30 November 2017 at Bangalore

India Smart Grid Forum, is facilitating Bangalore Electric Power Supply Company (BESCOM) in bringing..

Read more

National Seminar on Electrical Power Quality Issues Standards, Practice And Research Aspects

The seminar provides an overview on main PQ development in Europe. It focuses basically on recent le..

Read more

Study of PQ in an electronic products manufacturing unit to assess reasons for nuisance tripping

Many industrial installations suffer from nuisance tripping of circuit breakers. Often these trips..

Read more

Earthing Systems: Fundamentals of Calculation and Design

This Application Note discusses the principles of earthing electrode design with particular emphasis..

Read more

13th Webinar - Smart Grid viability for Indian Distribution Companies

19th December, 2017 (Tuesday) - The electricity distribution industry is facing unprecedented arra..

Read more

8th Webinar Leveraging Passive Filters to minimize Life Cycle Cost

19th May, 2016 (Thursday) - The non-linear loads are ever increasing in today's electrical and el..

Read more
Drop us a message

You're in the right place! Just drop us a message. How can we help?

Or see contact page
There seems to be some problem with validating your request. Please try again.
Thank You! Your message has been delivered.