Emerson Process Management ControlWave EFM 3808 - Manual (Page 265)

Section 1 - Overview Page 1-1 S1400CW
Section 1 - Overview
1.1 INTRODUCTION
This document provides information pertaining to the installation of ControlWave
systems; more specifically, information covering reasons, theory and techniques for
protecting your personnel and equipment from electrical damage. Your instrument system
affects the quality of service provided by your company and many aspects of its operational
safety. Loss of instruments means lost production and profits as well as increased expenses.
Information contained in this document is for educational purposes. Bristol Babcock makes
no warranties or guarantees on the effectiveness or the safety of techniques described herein.
Where the safety of installations and personnel is concerned, refer to the National Electrical
Code Rules and rules of local regulatory agencies.
1.2 MAJOR TOPICS
Topics are covered in seven sections designed to pinpoint major areas of concern for the
protection of site equipment and personnel. The following overview is provided for each of
the major sections.
· Section 2 - Protection
This section provides the reasons for protecting instrument systems. An overview of the
definition of quality and what we are trying to accomplish in the protection of site
installations and how to satisfy the defined requirements is presented. Additionally,
this section provides considerations for the protection of personnel and equipment.
· Section 3 - Grounding & Isolation
Information pertaining to what constitutes a good earth ground, how to test and
establish such grounds, as well as when and how to connect equipment to earth grounds
is provided
· Section 4 - Lightning Arresters & Surge Protectors
Some interesting information dealing with Lightning strikes and strokes is presented in
technical and statistical form along with a discussion of how to determine the likelihood
of a lightning strike. Protecting equipment and personnel during the installation of
radios and antenna is discussed in a review of the dangers to equipment and personnel
when working with antennas. Reasons for the use of lightning arresters and surge
protectors are presented along with overviews of how each device protects site
equipment.
· Section 5 - Wiring Techniques
Installation of Power and “Measurement & Control” wiring is discussed. Information on
obscure problems, circulating ground and power loops, bad relays, etc. is presented.
Good wire preparation and connection techniques along with problems to avoid are
discussed. This sections list the ten rules of instrument wiring.