GOST 50571.6-94 Electrical installations of buildings. Part 4. Security requirements. Protection against undervoltage

GOST 50571.6-94 (IEC 364-4-45-84) UDC group E08 STATE STANDARD OF THE RUSSIAN FEDERATION Electrical installations of buildings Part 4. Security requirements. Protection against undervoltage Electrical installations of buildings Part 4. Protection for safety Protection against undervoltage OKS 3402 Effective date 1/1/1995 Preface 1 prepared and submitted to the Technical Committee for Standardization TC 337 "Electrical residential and public buildings" 2 approved and put into effect by Decision of State Standard of Russia from 06.06.94 № 161 3 This Standard contains the full authentic text of the international standard IEC 364-4-45 (1984) "Electrical installations of buildings. Part 4. Security requirements. Chapter 45. Protection against undervoltage "4 first introduced INTRODUCTION This standard is part of the state standards for electrical installations of buildings developed on the basis of the standards of the International Electrotechnical Commission IEC 364" Electrical installations of buildings ". Establishes requirements for the content of the standard is a fundamental, whose provisions shall apply in all areas falling within the scope of the standardization and certification of electrical installations of buildings in the development and revision of standards, rules and regulations on the device, testing and commissioning of electrical installations. Numbering sections and paragraphs in the standard are in conformity with IEC 364 standards for electrical installations of buildings. The numbering system established in the standards IEC 364, provides an indication of numbers of parts and chapters of the international standard notation for numbers of sections and paragraphs of private standards. For example, in the notation of paragraph 451.1 of the standard figure 4 represents the part number, 45 - chapter number 451 - the section number of the international standard IEC 364-4-45 (1984). The use of this numbering system provides vzaimouvyazku requirements of private standards set standards for electrical installation of buildings according to the rules adopted by the IEC Technical Committee 64 "Electrical installations of buildings". The requirements of this standard is fully consistent with the requirements of the current "Rules of Electric" (SEP, the sixth edition), and approved Glavtehupravleniem Gosenergonadzor USSR Ministry of Energy. 1 Scope This standard establishes general requirements for the implementation of the undervoltage protection to ensure safe operation of electrical installations of buildings. Scope of Standard - GOST R 50571.1. 2 Normative references used in this standard reference to the GOST 50571.1-93 Electrical installations of buildings. Basic principles. 451 GENERAL REQUIREMENTS 451.1 In cases where the reduction or disappearance of tension with its subsequent recovery may pose a danger to persons or property shall be taken necessary precautions. Precautions should be taken in cases where part of the equipment or any installation may be damaged due to undervoltage. The use of protective devices by lowering the voltage is not required unless damage equipment or installation and there is a danger to humans. 451.2 Operation of protective devices by lowering the voltage may be delayed if the protected equipment or plant designed for short-term reduction or disappearance of the voltage is not dangerous to use. 451.3 When using contactors time delay on opening and subsequent closure of the contacts should not prevent an instantaneous shutdown of equipment or install safety devices or controls. 451.4 Characteristics of protective devices reduced voltage must comply with equipment standards related to start-up and operation of equipment. 451.5 In cases where the reintroduction of protective devices may create a dangerous situation, it should not be automatic. _______________ Key words: electrical buildings, ensuring safety operation, undervoltage protection, a safety device from undervoltage Posted 06/26/2008 GOST on "Electrical, lighting, security systems," GOST 15597-82 Fixtures for industrial buildings. 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