IEEE 277-2007 pdf download IEEE Recommended Practice for Cement Plant Power Distribution
1.Overview
1.1 Scope
This document has been developed as a recommended practice for electrical distribution systems in cementplants with the objective of satisfactory equipment utilization, reliability, performance, safety, and lowmaintenance-all at a reasonable cost.
1.2 Purpose
The purpose of this recommended practice is to provide guidance in established practices for the designapplication, installation, and protection of electrical distribution systems in cement plants. Thisrecommended practice will be used to augment some of the principles outlined as they apply to cementplants.
2.Normative references
The following referenced documents are indispensable for the application of this recommended practice(i.e., they must be understood and used, so each referenced document is cited in text and its relationship tothis document is explained). For dated references, only the edition cited applies. For undated references, thelatest edition of the referenced document (including any amendments or corrigenda) applies.
Accredited Standards Committee C2-2007. National Electrical Safety CodeR (NESCO).
IEEE Std 141m-1993. IEEE Recommended Practice for Electric Power Distribution for Industrial Plants(IEEE Red BookTM),2,3
U.S. Department of Labor, Mine Safety and Health Administration (MSHA), CFR 30 Part 56-Safety andHealth Standards Surface Metal and Nonmetal Mines.
U.S. Department of Labor, Mine Safety and Health Administration (MSHA), CFR 30 Part 57–Safety andHealth Standards Underground Metal and Nonmetal Mines. Subpart K-Electricity.
3. Power distribution for a new plant
Factors to consider in new plant construction include the main plant distribution substation, what cables touse, secondary unit substations, and safety ground check monitoring devices.
3.1 Main plant distribution substation
Source of plant power and the ownership of the main substation can greatly affect both the capital andoperating costs of a plant. Type of equipment and substation design will be dependent upon these decisionsas well as selected voltage levels and plant load.
3.1.1 Purchased power vs. on-site generation or co-generation
A study should be performed to determine the economics of purchased power (utility) vs. on-sitegeneration or co-generation. The trend in cement plants is to purchase power from the utility instead ofgenerating power. The decision to purchase or generate power depends primarily upon economics. Manyoperators believe that the possible increased production by the use of efficient kilns more than offsets the
IEEE 277-2007 pdf download
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