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This recommended practice describes how to collect data for use in reliability, availability, and maintainability assessments of industrial and commercial power systems. It is likely to be of greatest value to the power-oriented engineer with limited experience in the area of reliability. It can also be an aid to all engineers responsible for the electrical design of industrial and commercial power systems.

定价： 138元 / 折扣价： 118 元

This standard defines concepts and recommended procedures for connecting the grounding systems of alternating Current (AC) industrial and commercial power systems to the earth.

定价： 60元 / 折扣价： 51 元

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This recommended practice describes how to determine the reliability of 7×24 continuous power systems in industrial and commercial facilities. The method of reliability analysis by probability methods is described first. This is followed by a discussion of how to evaluate the results and how to implement changes to ensure that the expected degree of reliability is achieved.

定价： 138元 / 折扣价： 118 元

This recommended practice covers the selection and application of low-voltage circuit breakers used in industrial and commercial power systems. This standard does not include IEC recognized over-current protective devices.

定价： 119元 / 折扣价： 102 元

This recommended practice provides information for selecting the proper circuit breaker for a particular application. This recommended practice helps the application engineer specify the type of circuit breaker, ratings, trip functions, accessories, acceptance tests, and maintenance requirements. It also discusses circuit breakers for special applications, e.g., instantaneous only and switches. In addition, it provides information for applying circuit breakers at different locations in the… read more power system and for protecting specific components. Guidelines are given for coordinating combinations of line-side and loadside devices. Acceptance testing and maintenance guidelines are provided so that reliable operation can be verified and maintained. This recommended practice does not cover the selection and application of circuit breakers such as marine circuit breakers and definite purpose circuit breakers. read less

定价： 163元 / 折扣价： 139 元

This document provides guidance on energy saving control technology for transformation of electrical facilities in existing buildings in industrial and commercial installations. It also provides criteria for selection of devices and controls for implementing energy saving technologies to the owners or operators of the buildings. The guidance provided in this document can also be used for design of new buildings electrical systems.

定价： 62元 / 折扣价： 53 元

定价： 无文本

This part of IEC/IEEE 62395-1 specifies requirements for electrical resistance trace heating systems and includes general test requirements. This standard pertains to trace heating systems that may comprise either factory-fabricated or field-assembled (work-site) units, and which may be series and parallel trace heaters or surface heaters (heater pads and heater panels) that have been assembled and/or terminated in accordance with the manufacturer's instructions. This standard also includes… read more requirements for termination assemblies and control methods used with trace heating systems. This standard provides the essential requirements and testing appropriate to electrical resistance trace heating equipment used in industrial and commercial applications. The products complying with this standard are intended to be installed by persons who are suitably trained in the techniques required and that only trained personnel carry out especially critical work, such as the installation of connections and terminations. Installations are intended to be carried out under the supervision of a qualified person who has undergone supplementary training in electric trace heating systems. This standard does not include or provide for any applications in potentially explosive atmospheres. This standard does not cover induction, impedance or skin effect heating. Trace heating systems are grouped into different types of applications and the different conditions found during and after installation necessitate different requirements for testing. Trace heating systems are usually for a specific type of installation or application. The product type grouping, applications and product attributes are indicated. read less

定价： 84元 / 折扣价： 72 元

This part of IEC/IEEE 62395-2 provides detailed recommendations for the system design, installation, maintenance and repair of electrical resistance trace heating systems in industrial and commercial applications. This standard does not include or provide for any applications in potentially explosive atmospheres. This standard pertains to trace heating systems that may comprise either factory fabricated or field-assembled (work-site) units, and which may be series or parallel trace heaters, or… read more surface heaters (heater pads or heater panels) that have been assembled and/or terminated in accordance with the manufacturer's instructions. The products covered by this standard are intended to be installed by persons who are suitably trained in the techniques required and that only trained personnel carry out especially critical work, such as the installation of connections and terminations. Installations are intended to be carried out under the supervision of a qualified person who has undergone supplementary training in electric trace heating systems. This standard does not cover induction, impedance or skin effect heating. Trace heating systems can be grouped into different types of installations. These are characterized by different requirements for testing and are usually certified for a specific type of installation or application. Typical applications for the different types of installation are as follows: a) Installations of trace heating on pipes, vessels and associated equipment. Applications include : - freeze protection and temperature maintenance; - hot water lines; - oil and chemical lines; - sprinkler systems. b) Outdoor exposed area installations of trace heating. Applications include: - roof de-icing; - gutter and downspout de-icing; - catch basins and drains; - rail heating. c) Installation with embedded trace heating. Applications include: - snow melting; - floor warming; - frost heave prevention; - underground thermal energy storage systems; - door frames. d) Installations of trace heating internal to conduit or piping. Applications include: - snow melting - in conduit; - floor warming - in conduit; - frost heave prevention - in conduit; - underground thermal energy storage systems - in conduit; - internal trace heating of potable water lines; - enclosed drains and culverts. read less

定价： 101元 / 折扣价： 86 元

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