By G Vijayaraghavan
ISBN-10: 0750663995
ISBN-13: 9780750663991
ISBN-10: 1417552646
ISBN-13: 9781417552641
This ebook will let you achieve useful abilities and knowledge in grounding, bonding, lightning & surge safeguard. Few themes generate as a lot controversy and argument as that of grounding and the linked issues of surge safeguard, protecting and lightning safeguard of electric and digital structures. negative grounding perform could be the reason for continuous and intermittent difficult-to-diagnose difficulties in a facility. This publication seems at those matters from a clean but useful viewpoint and permits you to lessen pricey downtime in your plant and gear to a minimal by means of right program of those principles.Learning outcomes:* observe a number of the tools of grounding electric platforms* aspect the appropriate nationwide criteria* Describe the needs of grounding and bonding* checklist the categories of structures that can't be grounded* Describe what platforms may be operated ungrounded* competently safeguard delicate communications cables from noise and interference* follow functional wisdom of surge and brief safeguard* Troubleshoot and attach grounding and surge difficulties* layout, set up and attempt an efficient grounding approach for digital gear* comprehend lightning and the way to lessen its impression in your facility* safeguard delicate apparatus from lightning ?· An engineer's consultant to earthing, protecting, lightning and surge safety designed to convey trustworthy gear and communications platforms that agree to foreign and nationwide codes ?· realize how one can decrease plant downtime and intermittent faults by means of imposing best-practice grounding/earthing techniques?· research the rules of cable protective in communique networks
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Extra resources for Practical Grounding, Bonding, Shielding and Surge Protection (Practical Professional Books)
Example text
When one of the lines develops a ground fault, the current is only restricted by the grounding impedance. Thus, the system behaves virtually in the same manner as any system with Grounding of power supply system neutral 21 grounded source neutral. 8 shows this behavior. The ground fault current flowing in the faulted line divides itself into three equal parts flowing through each phase winding of the transformer. 8 Behavior of a zig-zag connected transformer during a ground fault The other type of grounding transformer is a wye-delta connected transformer.
10 illustrates this action. British Standard BS: 7671:2000 (IEE Wiring regulations) discusses the grounding of low-voltage installations in detail and has provided a method of classifying supply systems based on the type of grounding adopted as well as the method used to extend the system ground to consumer installations. The standard also discusses the comparative merits of the different types of systems for specific applications (refer to Appendix A for details of this classification). 8 Other challenges In the above discussions, we dealt with systems having a single source.
That is not to say that supplementary bonding in a kitchen or washroom is wrong but it is not necessary. For plastic pipe installation within a bathroom, the plastic pipes do not require supplementary bonding, and metal fittings attached to these plastic pipes also would not require supplementary bonding. However, electrical equipment still does require to be bonded and if an electric shower or radiant heater is fitted, they will require supplementary bonding as well. Supplementary bonding is carried out to the earth terminal of equipment within the bathroom with exposed conductive part.
Practical Grounding, Bonding, Shielding and Surge Protection (Practical Professional Books) by G Vijayaraghavan
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