GOST 50571.7-94 (IEC 364-4-46-81) UDC 696.6:006.354 Group E08 STATE STANDARD OF THE RUSSIAN FEDERATION Electrical installations of buildings Part 4. Security requirements. Branch, disable, control Electrical installations of buildings. Part 4. Protection for safety. Isolation, switching off, control 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 № 162 3 This Standard contains the full authentic text of the international standard IEC 364-4-46 (1981) "Electrical installations of buildings. Part 4. Security requirements 46. Branch and switch "4 first introduced INTRODUCTION This standard is part of the state standards for electrical installations of buildings, developed based on 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 of buildings. 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 notation numbers of parts and chapters of the international standard IEC designation numbers of sections and paragraphs of private standards. For example, in the notation of paragraph 465.1.1 of the standard figure 4 represents the part number, 46 - the chapter number, 465 - section number of the international standard IEC 364-4-46 (1981). The use of this numbering system provides vzaimouvyazku requirements of private standards set standards for electrical installations of buildings according to the rules adopted by the IEC Technical Committee 64 "Electrical installations of buildings". Requirements of the "Regulations for Electrical Installation" (RB, Sixth Edition), approved Glavtehupravleniem and Gosenergonadzor USSR Ministry of Energy, with the exception of 01.07.1983, consistent with the requirements of this standard. 01/07/1983 SEP paragraph is permitted in chains neutral conductor, if they are simultaneously used for the purposes of zeroing, the use of switches that simultaneously disconnecting neutral conductor disconnect all wires under tension. This assumption PUE not consistent with the requirement of paragraph 461.2 of this standard, under which the department is not allowed or off in a chain of zero working guide, combined with safety. Inconsistency requirements of this standard 01/07/1983 PUE will be removed in the revision of SEP. 1 Scope This Standard specifies requirements for the implementation of separation, disconnection and control of electrical circuits 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. 461 GENERAL 461.1, depending on the assigned function of any device designed to separate, off, or control, must comply with standards and technical specifications for these devices. 461.2 In systems TN-C neutral conductor, combined with protection, to separate or disconnect should not be. The system TN-S to separate or disconnect a working neutral conductor is not required. All power distribution systems to separate or disconnect protective conductors are not allowed. 461.3 activities described in this standard does not replace the protections set forth in other standards for electrical installations of buildings. 462 Branch of 462.1 in each circuit shall be capable of separation of each conductor from the supply wires under tension, except as mentioned in 461.2. Permitted include separation of circuits common device if operating conditions permit. 462.2 must include appropriate measures to avoid accidental power up the equipment. Note - Such measures may include the use of one or more events: blocking on the lock (lock), use of warning posters, placing equipment in a room under lock and key, or in the casing. As an additional measure could be used shorting and grounding. 462.3 In cases where the equipment represents a single node, or placed in one envelope, contains live parts connected to more than one power source warning poster must be in a place that a person with access to live parts, it was warned of the need to separate these parts from various sources of power, if only for this purpose does not provide locking devices that disable all sources. 462.4 If necessary, there shall be adequate means for removing residual charge. 463 Disabling the maintenance of the mechanical part 463.1 In cases where the operation of a mechanical part may be associated with risk of injury, should include facilities for disabled. Notes 1 For an electrically powered mechanical equipment may be classified as rotary machines, the installation of heating elements, solenoids. 2 Examples of facilities in which funds are used to disable maintenance of mechanical parts may be: cranes, elevators, escalators, conveyors, machine tools, pumps. 3 On systems that use other forms of energy, such a system, pneumatic, hydraulic, and others, these requirements do not apply. In these cases, power outages may be inadequate. 463.2 should include appropriate measures to avoid accidentally switching equipment electrically during maintenance of mechanical parts, if the shutdown feature is not under constant supervision of the person performing the maintenance of mechanical parts. Note - These measures could include: lock to lock (lock), use of warning posters, placing equipment in a room under lock and key, or in the casing. 464 Emergency shutdown, including the emergency stop. 464.1 shall be provided for emergency shutdown of any part of the installation for which may be necessary to disconnect the supply voltage in order to address an unexpected danger. Note - Examples of plants that use the emergency shutdown means (other than an emergency stop at 464.5), may be: device pumping flammable liquids, ventilation systems, large computers, discharge lamps, powered by high voltage electrical installations of large buildings, test and study the electrical installation, boiler rooms, kitchens catering. 464.2 In areas where there is a risk of electric shock devices tripping must disconnect all live conductors, except as provided in 461.2. 464.3 Means of emergency shutdown, including the emergency stop should act directly on the appropriate feeding guides. The device should be such that the shutdown of the power produced by one impact. 464.4 Emergency Switch Device must be such that its work does not lead to the emergence of new threats and does not interfere with the operation to eliminate this danger. 464.5 Means of emergency stop shall be provided where the traffic generated by the electric drive, can become dangerous. Note - For facilities in which funds are used emergency stop, for example, may include: escalators, elevators, hoists, conveyors, doors with electric machines, equipment for car washing. 465 Office (service shutdown) 465.1 General provisions 465.1.1 Controls should be provided for each region of the chain, which may require management, independent of other parts of the plant. 465.1.2 Controls do not have to disconnect all live conductors of the chain. Do not install single pole disconnecting device in the chain of zero working conductor. 465.1.3 As a rule, all controlled power-consuming equipment should be equipped with adequate controls. Allowed to manage multiple power consumers, working together with one control unit. 465.1.4 Operating signals can be performed using plug connectors on the current not exceeding 16 A. 465.1.5 Controls, provides switching power from one power source to another, should work on all conductors are energized. It shall be possible to include sources in parallel operation, if installation is not designed specifically for this operation. In this case, you should not disable neutral conductor, combined with a protective or protective conductor in the four-wire system. 465.2 The control circuits control circuits must be designed, constructed and protected so as to limit the dangerous consequences of the closure between the control circuit and other conductive parts that can cause a malfunction (eg false positive) controlled the apparatus. 465.3 465.3.1 Motor Control Motor Control Circuits shall be designed in such a way that was not possible to self engine after it was shut due to reduction or loss of voltage, if the self-starting is dangerous. 465.3.2 If the envisaged deceleration of the motor counter, should take measures to prevent the change in the direction of motor rotation at the end of braking, if the change in the direction of rotation is dangerous. 465.3.3 In cases where security depends on the direction of rotation of the motor, should take measures to prevent the change in the direction of motor rotation, due to, for example, loss of phase or change of phase sequence. ______________ Keywords: Electrical installations of buildings, provision of security department; off, management, money off, lockout, control device, the control circuit Posted 26/06/2008 GOST on "Electrical, lighting, security systems," GOST 15597-82 Fixtures for industrial buildings . General specifications GOST 2.702-75 Unified system for design documentation. Rules for making electronic circuits with GOST 2.752-71 Unified system for design documentation. Graphical symbols in diagrams. Robot device GOST 2.755-87 Unified system for design documentation. Graphical symbols in electrical circuits. Device switching and contact connections GOST 2.756-76 * Unified system for design documentation. Graphical symbols in diagrams. Is often perceived electromechanical devices GOST 2.757-81 * Unified system for design documentation. Graphical symbols in diagrams. Elements of the switching field for switching systems GOST 2.758-81 Unified system for design documentation. Graphical symbols in diagrams. Signal Technology GOST 2.762-85 * Unified system for design documentation. Graphical symbols in electrical circuits. Frequencies and frequency bands for transmission systems GOST 2.763-85 * Unified system for design documentation. Graphical symbols in electrical circuits. Device with a pulse-code modulation GOST 2.764-86 Unified system for design documentation. Graphical symbols in electrical circuits. Integrated optoelectronic display elements GOST 2.768-90 Unified system for design documentation. Graphical symbols in diagrams.
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