When considering a product or service purchase, a better selection can be made if it is a well informed decision. PSI would recommend you learn more about those issues or products that you are considering and below you will find articles that will assist you in that effort.

To download all of these readings in Microsoft Word97 format, please click here.

*NOTE: You will need winzip for this download.

• Guidelines For Grounding Information Technology Equipment (this file is only available in .pdf format, please visit www.adobe.com to download Acrobat Reader)

• Power Quality - Basics

• AC Power Panel Loading

• Powering Sensitive Devices

• Grounding & Bonding – The Basics

• Grounding - What you need to know

• Grounding - Soil Resistance & Acidity

• What is Lightning?

• Lightning & Induction

• Ground System Testing - Fall of potential & Alternative Testing Methods

• Ground Loops (difference in ground potential in computer systems)

• Ground Loops (difference in ground potential) CCTV equipment

• The "Ufer" Ground

• Lightning - How Does it act

• General Information - Surge Suppression

• What to do about power protection

• Proper TVSS selection to Avoid Ground Loops

• Controls and Surge Protection

• Secondary Surge Arrestors - What are they?

• Line Conditioners

• High Frequency Noise & Isolation Transformers

• Harmonic Currents

• *FAQ - Voltage Drop

• *Day in the life of a copier repairman

Tel: 407-380-9200 Fax: 407-380-3911 Email: jwest@psihq.com