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DL/T 823-2017 English PDF

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DL/T 823-2017: Functional specification for inverse time overcurrent protection
Status: Valid

DL/T 823: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
DL/T 823-2017English439 Add to Cart 4 days [Need to translate] Functional specification for inverse time overcurrent protection Valid DL/T 823-2017
DL/T 823-2002English559 Add to Cart 3 days [Need to translate] General specification for microprocessor-based inverse time overcurrent protection equipment Obsolete DL/T 823-2002

PDF similar to DL/T 823-2017


Standard similar to DL/T 823-2017

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Basic data

Standard ID DL/T 823-2017 (DL/T823-2017)
Description (Translated English) Functional specification for inverse time overcurrent protection
Sector / Industry Electricity & Power Industry Standard (Recommended)
Classification of Chinese Standard K45
Classification of International Standard 29.240
Word Count Estimation 19,114
Date of Issue 2017-12-27
Date of Implementation 2018-06-01
Older Standard (superseded by this standard) DL/T 823-2002
Quoted Standard GB/T 2900.1; GB/T 2900.17; GB/T 2900.49; GB/T 21711.1; IEC 60255-1-2009
Regulation (derived from) National Energy Administration Announcement No. 13 of 2017
Issuing agency(ies) National Energy Administration
Summary This standard specifies the technical requirements, performance indicators and test methods of the inverse time current protection functional components. The inverse time current protection functions covered by this standard include inverse time phase overcurrent protection; inverse time zero sequence overcurrent protection; stator overload protection; rotor overload protection; excitation circuit overload protection; thermal overload protection. This standard is applicable to relay protection devices for over-current and overload of power system lines or components, as the basis for the development, design, manufacture, test and operation of such products.

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Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version DL/T 823-2017 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

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