Category Archives: IEEE

IEEE PC57.12.36

IEEE Draft Standard Requirements for Liquid-Immersed Distribution Substation Transformers

Published by: / 39 pages

Scope

This standard covers certain electrical, dimensional, and mechanical characteristics of 50 Hz and 60 Hz, two winding, liquid-immersed distribution substation transformers. Such transformers may be remotely or integrally associated with either primary and secondary switchgear or substations, or both, for step-down or step-up purposes rated as follows:a) 112.5 kVA through 10 000 kVA three-phaseb) 250 kVA through 6667 kVA single-phasec) High voltage 69 000 V and below and low voltage 34 500 V and belowIt is not intended that this standard shall apply to dry-type, regulating, pad-mounted, secondary-network,furnace, rectifier, mobile, railway, or mine transformers.

Abstract

Revision Standard – Unapproved Draft.

Small power transformers have become a significant element in distribution systems supplying large commercial customers like major resort hotels and site-specific industrial customers that desire the local utility to own, operate, and maintain the serving transformer. These transformers can range in sizes from 112.5 kVA to 10 000 kVA with primary voltages at 69 000 V and below and secondary voltages from 34 500 V to 120 V. Transformers in this standard are generally for larger distribution customers often with special voltages or installation requirements like convention centers with large chiller plants and extensive exhibit space. There is often a desire to serve these transformers from underground systems using side-mounted bushings on the primary. This standard seeks to define the small power transformer that is applied as more than just a limited scope version of the power transformers covered by IEEE Std C57.12.10TM and as more than a large distribution class transformer covered by IEEE Std C57.12.34TM.

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IEEE PC57.119

IEEE Draft Recommended Practice for Performing Temperature Rise Tests on Liquid-Immersed Power Transformers at Loads Beyond Nameplate Ratings

Published by: / 49 pages

Scope

This recommended practice covers temperature rise test procedures for determining those thermal characteristics of power transformers needed to appraise the transformer’s load carrying capabilities at specic loading conditions other than rated load.

Purpose

These recommended test procedures for performing temperature rise tests on power transformers are for the purpose ofa) Determining the thermal characteristics of a transformer needed to appraise the thermal performance of a transformer at loads other than nameplate ratingb) Verifying that a transformer can be loaded with a specified load profile without exceeding specied temperature rise c) Assessing a transformer’s performance during transient loading, simulating a load cycle that includes loads in excess of nameplate ratingTests performed in accordance with Clause 9 are for the purpose of determining transformer thermal characteristics in a consistent manner. Data may then be accumulated from a large number of transformers and used to evaluate the accuracy of the equations and the empirical constants used in the loading guides.Tests performed in accordance with Clause 10 are for the purpose of demonstrating the thermal effects of loading a transformer with a specified sequence of loads, including loads beyond nameplate rating.Tests performed in accordance with Clause 11 are for the combined purposes of determining the thermal characteristics of a transformer and demonstrating the thermal effects of loading with a designated load cycle. This is accomplished by performing temperature rise tests at three loads, similar to Clause 9, except the three loads are selected to simulate the thermal effects of a specific load cycle.It is not intended that all of these procedures be performed on a transformer design. It is intended that only one of the following combination of test procedures be specified:a) Clause 9 only, when thermal characteristics are to be determined.b) Clause 10 only, when only verifi;cation of complying with temperatures limits when loaded to a specific load profile is needed.c) Clause 9 plus Clause 10, when both thermal characteristics and verification of compliance with temperature limits when loaded to a specific load profile are needed.d) Clause 11 when both thermal characteristics and verification of compliance with temperature limits when loaded to a specific load profile are required, and the load profile can be represented with three steady state loads.The user should specify which of the test procedures are required at the time of specification.A further purpose of these procedures is to obtain information with respect to possible loading limitations imposed on the transformer by oil levels and ancillary equipment when the transformer is operated at loads beyond nameplate rating.

Abstract

Revision Standard – Unapproved Draft.

Recommendations are made, where possible, regarding the performance and evaluation of temperature rise tests on liquid-immersed power transformers beyond nameplate ratings. The intent is to assist power transformer manufacturers, and the ultimate users, in evaluating thermal performance of the transformers under varying loads.

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IEEE/ANSI C37.85-1989

American National Standard for Switchgear-Alternating-Current High-Voltage Power Vacuum Interrupters-Safety Requirements for X-Radiation Limits

Published by: 1989-02-22 / 1989-02-22 / 12 pages
Revision Standard – Inactive – Withdrawn.

This standard specifies the maximum permissible X-radiation emission from alternating-current high-voltage power vacuum interrupters that are intended to be operated at voltages between 5000 volts and 38 000 volts when tested in accordance with procedures described in this standard.

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IEEE PC37.248

IEEE Draft Guide for Common Format for Naming Intelligent Electronic Devices (COMDEV)

Published by: / 39 pages

Scope

This guide provides a common convention for naming physical and virtual Intelligent Electronic Devices (IEDs). It discusses the various environments where device names are needed and how a common naming convention would be beneficial.

Purpose

The purpose of this guide is to provide a convention for naming physical and virtual IEDs in order to provide consistency to the point that automated systems and persons unfamiliar with the particular electrical system could determine what entities the IEDs are monitoring or reporting.

Abstract

New IEEE Standard – Unapproved Draft.

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IEEE 59 IRE 12, S1

IRE Standards on Navigation Aids: Direction Finder Measurements, 1959

Published by: 1959-08-01 / 1959-08-01 / 27 pages
– Inactive – Withdrawn.

Describes the standardisation of measurement methods and procedures to enable the determination of a direction finder’s (DF) characteristics which will permit analysis of DF performance in a uniform manner. Standard test conditions are given and test equipment is discussed. Direction finder sensitivity and system accuracy measurements are discussed, and time requirements and interference are considered.

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IEEE C57.121-1988

IEEE Guide for Acceptance and Maintenance of Less Flammable Hydrocarbon Fluid in Transformers

Published by: 1989-12-15 / 1989-12-15 / 23 pages

Scope

This guide recommends tests and evaluation procedures, as well as criteria and methods of maintenance for Less Flammable Hydrocarbon (LFH) transformer insulating fluids. These are also known as High Molecular Weight Hydrocarbon (HMWH) fluids. HMWH dielectric fluids are hereby defined as those fluids having an ASTM D92 fire point of 300 C or greater, being primarily composed of, but not restricted to, hydrocarbons. These fluids meet the requirements of ANSI/NFPA 70-1990, National Electrical Code [1]1 Article 450-23 as a less flammable dielectric for use in indoor applications when used in properly designed and installed transformers. Ester- and silicone-based fluids are not covered by this guide. Methods of reconditioning LFH fluids are also described. It is not the intent of this guide to address retro-filling transformers with LFH fluids. Any such substitution of fluids should only be performed after consultation with the manufacturers of fluid and equipment. Where instructions given by the transformer or fluid manufacturers differ from those given in this guide, the manufacturer’s instructions are to be given preference.

Purpose

The purpose of this guide is to assist the transformer operator in evaluating and processing LFH fluids received in new transformers, as received from the fluid manufacturer for filling transformers, and as processed into such equipment. It also assists the operator in maintaining the fluid in serviceable condition. This guide, therefore, recommends standard tests and evaluation procedures, methods of reconditioning and reclaiming LFH fluids, and the analysis results at which these processes become necessary. It will also address the routines for restoring resistance to oxidation, where desired, by the addition of inhibitors.

Abstract

New IEEE Standard – Inactive – Superseded.

IEEE C57.121-1988, IEEE Guide for Acceptance and Maintenance of Less Flammable Hydrocarbon Fluid in Transformers, covers the evaluation and handling procedures for less flammable hydrocarbon transformer insulating fluids. Its purpose is to assist the transformer operator in receiving new fluids, filling transformers, and maintaining the fluids in serviceable condition.

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IEEE/ISO/IEC 11073-20601-2016

ISO/IEC/IEEE International Standard – Health Informatics — Personal Health Device Communication – Part 20601: Application Profile – Optimized Exchange Protocol

Published by: 2016-06-15 / 2016-06-15 / 252 pages

Scope

Within the context of the ISO/IEEE 11073 personal health device standard family, this standard defines an optimized exchange protocol and modeling techniques to be used by implementers of personal health devices to create interoperability between device types and vendors. This standard establishes a common framework for an abstract model of personal health data available in transport-independent transfer syntax required to establish logical connections between systems and to provide presentation capabilities and services needed to perform communication tasks. The protocol is optimized to personal health usage requirements and leverages commonly used methods and tools wherever possible.

Purpose

This standard addresses a need for an openly defined, independent standard for controlling information exchange to and from personal health devices and managers (e.g., cell phones, personal computers, personal health appliances, and set top boxes). Interoperability is key to growing the potential market for these devices and enabling people to be better informed participants in the management of their health.

Abstract

– Draft for an Adoption.

Within the context of the ISO/IEEE 11073 family of standards for device communication, this standard defines a common framework for making an abstract model of personal health data available in transport-independent transfer syntax required to establish logical connections between systems and to provide presentation capabilities and services needed to perform communication tasks. The protocol is optimized to personal health usage requirements and leverages commonly used methods and tools wherever possible.

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IEEE 730.1-1989

IEEE Standard for Software Quality Assurance Plans

Published by: 1986-10-10 / 1986-10-10 / 13 pages

Scope

The purpose of this standard is to provide uniform, minimum acceptable requirements for preparation and content of Software Quality Assurance Plans (SQAPs).In considering adoption of this standard, regulatory bodies should be aware that specific application of this standard may already be covered by one or more IEEE or ANSI standards documents relating to quality assurance, definitions, or other matters. It is not the purpose of this document to supersede, revise or amend existing standards directed to specific industries or applications.This standard applies to the development and maintenance of critical software. For non-critical software, or for software already developed, a subset of the requirements of this standard may be applied.The existence of this standard should not be construed to prohibit additional content in a SQAP. An assessment should be made for the specific software item to assure adequacy of coverage. Where this standard is invoked for an organization or project engaged in producing several software items, the applicability of the standard should be specified for each of the software items.

Abstract

Revision Standard – Inactive – Superseded.

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IEEE PC57.12.10

IEEE Draft Standard Requirements for Liquid-Immersed Power Transformers

Published by: / 56 pages

Scope

This voluntary consensus standard sets forth the requirements for power transformer application. This standard is intended to be used as a basis for performance, interchangeability, and safety of the equipment covered and to assist in the proper selection of such equipment.This document is a product standard that covers certain electrical, dimensional, and mechanical characteristics of 50 Hz and 60 Hz, liquid-immersed power transformers and autotransformers. Such powertransformers may be remotely or integrally associated with either primary switchgear or substations, or both, for step-down or step-up purposes and base rated as follows: 833 kVA and above single-phase,750 kVA and above three-phase.This standard applies to all liquid-immersed power transformers and autotransformers that do not belong to the following types of apparatus:a) Instrument transformersb) Step voltage and induction voltage regulatorsc) Arc-furnace transformersd) Rectifier transformerse) Specialty transformersf) Grounding transformersg) Mobile transformersh) Mine transformers

Abstract

Revision Standard – Unapproved Draft.

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IEEE PC57.19.01

IEEE Draft Standard Performance Characteristics and Dimensions for Outdoor Apparatus Bushings

Published by: / 26 pages

Scope

This standard covers electrical, dimensional, and related requirements for outdoor power apparatus bushings that have basic impulse insulation levels (BILs) of 150 kV and above. It provides specific values for dimensional and related requirements that are to be interpreted, measured, or tested in accordance with IEEE Std C57.19.00. Bushings covered by this standard are intended for use in free air as components of liquid-filled transformers and reactors.

Purpose

To standardize the dimensions, ratings, test levels and performance characteristics of outdoor power apparatus bushings having insulation levels (BILs) 110 kV and above.

Abstract

Revision Standard – Unapproved Draft.

Electrical, dimensional, and related requirements 1 for power transformer and reactor bushings that have basic impulse insulation levels (BILs) of 150 kV and above are covered. Specific values for dimensional and related requirements that are to be interpreted, measured, or tested, in accordance with IEEE Std C57.19.00, are provided.

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