GOST R 51732-2001 Cable-distributive devices for residential and public buildings. General specifications

GOST 51732-2001 UDC E17 STATE STANDARD OF THE RUSSIAN FEDERATION Cable-distributive devices for residential and public buildings General Specifications Input-distributional boards for dwellings and public buildings. General specifications ACS 29.240.30 OKP 34 3436 Effective date 1/1/2002 Preface 1 DESIGNED JSC Central Design Bureau "Wiring" INTRODUCED Standardization Technical Committee TC 331 "Low-voltage switchgear and distribution management", 2 adopted and put into operation the Decree State Standard of Russia on April 5, 2001 № 169-v. 3 first introduced Introduction This standard is designed to ensure the development and regulatory development in the production of water-distribution devices that meet current regulatory requirements for electrical installations of residential and public buildings of different heights, as well as requirements for standards IEC for electrical and fire safety. The standard contains requirements for water-distribution devices used in high-rise and low-rise residential and public buildings (see Building Codes SNIP 2.08.01-89, SNIP 2.08.02-89, SNIP 2.09.04-87), as well as individual houses and cottages. In this standard, in contrast to GOST 19734-80 covers the requirements for ensuring the possibility of joining water-distribution devices to four-and pyatiprovodnym feeding (distribution) networks with earthed neutral (type grounding system accordingly TN-C and TN-S or TN-CS GOST R 30331.2-95/GOST 50571.2-94). This standard takes into account the requirements set by GOST 51321.3-99 to distribution devices used in areas that can be accessed unqualified personnel. The standard provides for water-distribution devices installed in individual houses and cottages, two methods of protection against electric shock, defined by the class I and II according to GOST R IEC 536-94. For the water-distribution devices installed in multi-storey and low-rise buildings (up to five storeys), set class I. Appendix B shows the method of determining the nominal current parliament and the nominal operating currents embedded in these devices. 1 Scope 1.1 This Standard applies to water-distribution systems (hereinafter - ASE), intended for reception, recording and distribution of electric energy in electric residential and public buildings as well as to protect the waste from the parliament and the distribution of group circuits for overload and short circuit . 1.2 Standards apply to ASU, attached to the nourishing power grid voltage 380/220 VAC, 50-60 Hz with earthed neutral. 1.3 The standard establishes requirements for the ASP used in high-rise and low-rise residential and public buildings, as well as in individual homes and cottages. 1.4 Climatic ASU - UHL4 GOST 15150 and GOST 15543.1. By agreement between the producer and consumer of parliament may be made of a climatic performance. Requirements due to climatic performance for more severe operating conditions, must be given to the technical specifications for specific types of ASU. 1.5 The standard establishes requirements for ASU, which are produced for the needs of the country's economy and exports. 1.6 All items standard than 06/02/1911, 06/02/1914, 02/06/1921, 03/06/1912, are required. 2 Normative references in this standard references to the following standards: GOST 2.601-95 Unified system for design documentation. Operational documents GOST 9.032-74 Unified system of corrosion and aging. Paint coatings. Group's technical requirements and designations GOST 9.302-88 Unified system of corrosion and aging. Coverage and non-metallic inorganic. Control methods GOST 9.303-84 Unified system of corrosion and aging. Coverage and non-metallic inorganic. General requirements for the selection of GOST 9.401-91 Unified system of corrosion and aging. Paint coatings. General requirements and methods of accelerated tests for resistance to climatic factors GOST 9.410-88 Unified system of corrosion and aging. Powder coating polymer. Typical processes GOST 12.1.004-91 safety standards system. Fire safety. General requirements of GOST 12.2.007.0-75 safety standards system. Electrotechnical products. General safety requirements of GOST 12.4.026-76 safety standards system. Color signal and safety signs GOST 27.003-90 Reliability in Engineering. The composition and the general rules set requirements for reliability GOST 27.410-87 Reliability in Engineering. Methods to control the reliability and monitoring plans to test the reliability of GOST R IEC 536-94 Classification of electrical and electronic equipment in the way of protection against electric shock, GOST 4751-73 eyebolts. GOST 10434-82 electrical contact connections. Classification. General technical requirements GOST 11516-94 Hand-held tools for working with voltages up to 1000 V ac and 1500 V dc GOST 13716-73 Devices stropovye for vessels and equipment. GOST 14192-96 Cargo marking GOST 14254-96 (IEC 529-89) Degrees of protection provided by enclosures (code IP) GOST 15140-78 Paints and varnishes. Methods for determining the adhesion of 15150-69 Machines, tools and other industrial products. Designs for different climatic regions. Category, environmental conditions, storage and transportation of the impact of climatic factors among the guests 15543.1-89 Electrotechnical products. General requirements for resistance to climatic external influencing factors 16962.1-89 Standard (IEC 68-2-1-74) Electrotechnical products. Test methods for resistance to climatic external influencing factors GOST 16962.2-90 Electrotechnical products. Test method for resistance to mechanical external influencing factors GOST 17516.1-90 Electrotechnical products. General requirements for mechanical resistance to external influencing factors GOST 18690-82 cables, wires, cables and cable fittings. Labeling, packaging, transportation and storage of GOST 19734-80 Cable-distributive devices for residential and public buildings. General specifications GOST 21130-75 Electrotechnical products. Ground terminal and ground signs. The design and dimensions GOST 21991-89 (IEC 447-74) electrical equipment. Electrical apparatus. The direction of movement of controls GOST 22789-94 (IEC 439-1-85) low-voltage devices. General technical requirements and test methods to GOST 23216-78 Electrotechnical products. Storage, transportation, temporary corrosion protection, packaging. General requirements and test methods to GOST 27483-87 (IEC 695-2-1-80) Tests for flammability. Test methods. Tests of a heated wire to GOST 27924-88 (IEC 695-2-3-84) Tests for flammability. Test methods. Tests for poor contact with the filament elements 30331.1-95 Standard (IEC 364-1-72, IEC 364-2-70) / GOST 50571.1-93 (IEC 364-1-72, IEC 364-2-70) Electrical installations of buildings . Key provisions of GOST 30331.2-95 (IEC 364-3-93) / GOST 50571.2-94 (IEC 364-3-93) Electrical installations of buildings. Part 3. Key features Standard 30331.3-95 (IEC 364-4-41-92) / Standard 50571.3-94 (IEC 364-4-41-92) Electrical installations of buildings. Part 4. Security requirements. Protection against electric shock, GOST 50030.1-99 (IEC 947-1-88) Low-voltage switchgear and controlgear. Part 1. General requirements of GOST 50462-92 (IEC 446-89) Identification of conductors by colors or numerals 50571.10-96 Standard (IEC 364-5-54-80) Electrical installations of buildings. Part 5. Selection and installation of electrical equipment. Chapter 54. Earthing and protective conductors GOST 51321.3-99 Devices low-voltage distribution and control. Part 3. Additional requirements for distribution and control devices intended for use in areas accessible to unqualified personnel, and test methods. 3 Definitions In this standard, the following terms and definitions: 3.1 General terms and definitions 3.1.1 ASE: Electrical Low Voltage, which contains equipment that provides opportunity for the input, distribution and metering of electricity, as well as waste management and protection of distribution circuits and group in residential and public buildings, which is available in the form of the functional blocks in one or more interconnected (mechanically and electrically) panels or in one case, depending on the type of building on 3.2. 3.1.2 Functional unit: Part of interconnected devices, or parliament panel (multipanel ASP) which provides implementation of certain functions 3.1.1. Note - Devices unit may not be united by one removable constructive basis. 3.1.3 Block I: A functional unit, which serves the electric power in parliament and containing a switching and protective devices in accordance with Annex A, and also includes part of ASU for the placement, retention and adherence to the unit (s) of the mains conductors. 3.1.4 The unit will automatically including backup power (ABP): A functional unit containing the equipment and control pads switching devices input unit to which attached vzaimorezerviruemye mains. 3.1.5 block metering: The function block that contains the counter direct or transformer connection, current transformers and testing adapter box. Note - The test adapter box - the device that contains the terminal block for connection of the control of three-phase meter. 3.1.6 Power Distribution Unit: Functional unit containing protective devices and group distribution chains, and includes part of ASU or panels for placement and connection of conductors. 3.1.7 block automatic lighting control: Functional block containing the protective devices group chains obschedomovogo lighting elements for automatic switching on and off depending on the degree of natural light and / or time of day on the set program. Note - The ASP can contain blocks with non-automatic control obschedomovym lighting. 3.2 Terms and definitions relating to its design ASP (ASP types) 3.2.1 multipanel ASP: ASP, in which functional units are available in several panels, whose number is determined by the composition and number of units required for a specific electrical apartment building (with the number of floors more than five) or a public building. 3.2.2 one pane ASU: ASU performed on the same constructive manner as the panel multipanel ASU, and contains all the required functional blocks for electrical installations of a building or part thereof (the number of floors not more than five). 3.2.3 The cabinet ASP: ASP, containing all necessary function blocks for electrical installations of individual houses or cottages, set in a shell-type cabinet. 3.3 Terms and definitions relating to the panels multipanel 3.3.1 ASE Panel: Detachable part multipanel parliament, made in a single constructive manner with other panels and containing the appropriate functional blocks. 3.3.2 The introductory panel: Panel multipanel ASP, usually containing hardware unit (s) of input and unit (s) accounting. 3.3.3 The panel opening with ABP (ABP panel): panel opening to 3.3.2, which also contains a block with equipment ABP. 3.3.4 Distribution Panel: The panel multipanel ASE devices containing block (s) of the distribution and which can also be placed blocks of accounting units of automatic or opt-in lighting controls, etc. Panel 3.3.5 fire fighting equipment (panel PPU): Patch Panel multipanel VRU, join the introductory panel with ATS and is designed to supply electrical and control circuits of fire extinguishers, fire alarm circuit devices, evacuation lighting and other necessities for the warning and fire suppression for power consumers. 3.4 Terms and definitions relating to design elements 3.4.1 ASP framework: Supporting the panel of parliament, which are attached devices functional blocks, as well as elements of the shell and inner protective fencing. 3.4.2 Shell: Part of ASU, which provides protection from external influences and direct access to live parts from all sides, while also serving in parliament cabinet serve the supporting structure. 3.4.3 shell element: Part of the outer shell of parliament (walls, doors, plugs, caps, etc.). 3.4.4 Compartment: Part of the interior space of parliament, designed to accommodate the functional unit (s), fenced on all sides by walls and / or walls, and close separate inner door or doors of parliament. 3.4.5 internal protective fencing: Fencing, located behind the door panel (cabinet), impeding the unintentional direct contact with uninsulated live parts and provide protection against arc when performing switching operations. 3.4.6 Operational Panel: Inside the security fence of parliament, to which the withdrawn government apparatus, and which excludes access to live parts when the door is open parliament. 3.4.7 Partition: Part of the panel (cabinet), which separates a functional unit from another or separating circuit for various purposes. 3.4.8 busbars: The system of conductors connected to the input unit and intended for accession phase, protective PE and N conductors Zero workers and groups of several distribution circuits. Note - The term "bus" does not determine its structure. 3.5 Terms relating to the supply network and off-3.5.1 ASP circuits supplied by the electrical network: Three-phase electric distribution network with earthed neutral, providing supply power to the ASE from an external source. 3.5.2 Distribution circuit: Three-phase electric circuit extending from the ASU and feeding floor boards and / or other distribution points of electrical housing (public) buildings. 3.5.3 Group circuit: Electrical circuit extending from ASU and is designed to power the lights, sockets and other electrical power consumers obschedomovyh housing (public) buildings. 3.5.4 Combined Zero workers and protective conductor (PEN-conductor): According to GOST 30331.1/50571.1. 3.5.5 protective earth conductor (PE): According to GOST 30331.1/50571.1. 3.5.6 neutral conductor (N): According to GOST 30331.1/50571.1. 3.6 Terms and definitions relating to the electrical parameters of ASE 3.6.1 Rated current system: According to GOST 50030.1. 3.6.2 The nominal operating current built in ASP device: Most current value, determined (in accordance with Annex B) under the terms of allowable excess temperature apparatus and the circuit elements to which it is enabled. 3.6.3 Rated current ASE: Rated current introductory unit, as determined by the terms of allowable temperature rise in accordance with Annex B. 3.6.4 Rated current multipanel ASE: Rated current introductory panel. Note - If you enter multipanel ASE provides two introductory unit on the same rated current to enable the transfer of all loads connected to them by one of them, rated current ASE corresponds to the rated working current of one unit. 3.6.5 Rated current distribution panel: The highest value of current determined by the terms of allowable temperature rise (in accordance with Annex B) for the specified distribution. 3.6.6 Rated short time withstand current circuit: According to GOST 22789. 3.6.7 Rated conditional short circuit: According to GOST 22789. 4 Classification of parliament should be classified on the grounds specified in Table 1. Table 1 - Classification of ASP Tag Classification Type ASU multipanel one pane cabinet one by the place of installation: - in switchboard rooms + + - - out of switchboard room + + + 2 By type of installation: - outdoor + + + - wall - - + - embedded in a niche - - + 3 on the degree of protection according to 06/06 4 By entering schemes (number of schemes - according to Annex A) 1, 2, 4, 6, 7, 1, 2, 4, 5, 7 1,2,3 5 By way of (class) Protection against electric shock according to GOST R IEC 536: - Class I + + + - Class II - - + 6 In the presence of block automatic transfer switch (ATS) with: - unit + 2) - without power + + + 7 by availability of automatic control unit obschedomovym lighting: - with the power + + + - without block (for public buildings) + + + 8 on access to care staff: - qualified + + + - nekvalifitsirovannogo1) - - + 1) for unskilled personnel service cabinet ASU limited to performing switching operations (IEC 51321.3). 2) Only by agreement between manufacturer and consumer. 5 Key parameters 5.1 Basic parameters of parliament must meet in Table 2. Table 2 - Key parameters ASU Parameter Type ASU multipanel one pane cabinet 1 Rated voltage at the input ASE IN 380/220 380/220 380/220 2 Rated current input devices, A 250, 400, 630 160, 250 50, 63, 100 , 125, 160 3 Rated current input switchgear panels to block the automatic transfer switch (ATS), A 100, 160, 250, 400 100, 160, 250 - 4 Rated current parliament and panels multipanel parliament, and under 2.5 5 rated currents of protective and / or commutation of protective devices supply chains, and 25, 32, 40, 63, 100, 160, 250 25, 32, 40, 63, 100, 160 10, 16, 25, 32, 40 6 Nominal current protective devices group chains , A 10, 16, 25, 10, 16, 25, 10, 16, July 25 Nominal operating current built-in ASP protective devices, and according to 2.5 in August rated breaking currents of the differential circuit breaker, mA: - to enter parliament - - 300, 500 - supply chain 300, 500,300, 500 30, 100 - group chain 30 30 10; 30 September Rated short time withstand short-circuit current (rms value1)) for block input and busbar ASE kA 20 15 Ik ? 10 1) peak value short-circuit current should be equal to the product of the effective value of the coefficient k = 1,5. 5.2 For one pane of parliament and cabinet, as well as for each panel multipanel parliament should be determined by their nominal currents, and embedded in these devices - the nominal operating currents in accordance with Annex V. The values ??of the parameters must be given to the technical specifications for specific types of ASU. 5.3 Basic dimensions and weight of one pane of parliament and cabinet, as well as panels multipanel parliament must be given to the technical specifications for specific types of ASU. Dimensions of panels and cabinets ASU outdoor performance, as a rule, should not exceed 2000'800 (1200) '500 mm (height, width, depth), and ASU wall cabinets and built-in niche performances - 1000'800'250 mm. 5.4 Designation types odnopanelnyh parliament and cabinet and panels multipanel ASE recommended form in accordance with Annex G. 6 Common technical requirements 6.1 General requirements 6.1.1 parliament must meet the requirements of this standard and technical specifications for specific types of ASU and design documentation, duly approved . 6.1.2 ASE each species must have the functional blocks of devices that meet specific electrical relevant buildings on 1.3. 6.1.3 Operating ASU and resistance to external factors must meet 6.1.3.1-6.1.3.6. 6.1.3.1 Ambient air temperature - according to the climatic performance of 1.4. 6.1.3.2 The height above sea level - less than 2000 m. 6.1.3.3 type of atmosphere - I according to GOST 15150. 6.1.3.4 ASP must be resistant to normal and extreme values ??of climatic factors on the GOST 15543.1, GOST 15150, the relevant climatic design in 1.4, and the conditions of storage and transportation under section 10. 6.1.3.5 ASP must be resistant to mechanical environmental factors M1 GOST 17516.1. 6.1.3.6 Specific values ??of external exposure factors must be given to the technical specifications for specific types of ASU. 6.1.3.7 By agreement between the consumer and the manufacturer of parliament may be made for special operating conditions (for example, higher ambient temperatures, seismic conditions, operating conditions at an altitude of 2000 m above sea level, etc.). Additional requirements and test methods to establish the technical specifications for specific types of ASU. 6.2 Construction 6.2.1 Structural Elements ASU Class I, relating to skeletons, shells and other conductive parts should be made primarily of steel with a protective coating. 6.2.2 Shells ASU Class II, if they do not function as supporting elements for live parts shall be made of insulating material, is resistant to ignition when exposed to hot temperatures (850 ± 10) ° C wire, when embedded in the ASP-flammable walls - to (650 ± 10) ° C (see GOST R 51321.3). 6.2.3 Insulation Elements ASU Class I and II, which are attached live parts shall be made of insulating material, is resistant to ignition when exposed to hot temperatures (960 ± 10) ° C wire in accordance with GOST 51321.3. 6.2.4 Heat shells ASU Class II, as well as insulating bases to 6.2.3 shall comply with GOST 51321.3. 6.2.5 The construction of each type of ASP must provide a one-way service from the front side, and the government apparatus should be located behind the doors of parliament. 6.2.6 One-and multipanel ASU, designed for installation in switchboard rooms, it is recommended to produce a performance that protects ASU front and sides, and ASP are installed outside the switchboard room must have a response that protects parliament from all sides except the lower base adjacent to the floor. Degree of protection of one-and multipanel, as well as cabinet ASU - according to 6.6. 6.2.7 In the one-and multipanel ASE input and output wires and cables mains shall be provided below. By agreement between the consumer and producer input and output off-conductors may be provided as a down and up. In parliament cabinet performance input and output conductors must be provided as the bottom and the top of the cabinet. 6.2.8 In the input unit and the allocation of sufficient space for placement and connection of conductors to devices in compliance with the normalized bending radii of insulated wire and cable cores. 6.2.9 In the input unit and distribution should be the elements for fastening cables and wires supply networks and supply chains. 02.06.1910 If the introductory panel provides two sets of input being connected to different feeding networks (Figure 6, Appendix A), then they should be separated by a partition. Septum should be provided also between devices unit ABP (Figure 7, Appendix A). 02/06/1911 in the one and cabinet parliament blocks input and distribution should be separated by partitions. 02.06.1912 If a distribution panel multipanel ASU placed two blocks of the distribution being connected to different inputs, then between them should provide a partition. 06/02/1913 When you apply the block input multipanel ASU two input devices, they should be positioned so as to ensure free and safe access to the handlebars of drives and comfort on and off vehicles. 06/02/1914 In the input unit ASU, if specified in the order should include the installation of surge arresters to protect the electrical surge. Arresters must be connected after the protective devices input. 06/02/1915 ASU and the one-guiding plates multipanel parliament (as agreed between the consumer and the manufacturer) should include sections on 3.4.4 with doors to accommodate blocks of commercial accounting of electric power. Doors should be locked with a key and have the elements for their sealing. Compartments can be closed door parliament, or the panel - a separate lock. 06/02/1916 02/06/1915 compartment must be designed for placement of one or two units of account (if ASE is powered by two supply networks), each of which includes a counter, a test box and current transformers (if meter transformer connection). Blocks of accounting relating to the different units of input, should be separated by partitions. Each block counters should be separated from the current transformers baffles to prevent accidental touching of live parts are open. 06/02/1917 In CABINET STYLE ASU introductory clips for wire mains and chain account should have the operational panel (3.4.6), which must be provided for sealing elements, with blocks of records in the individual compartments can not be allocated. 06/02/1918 in parliament cabinet performance as protective devices should be used circuit breakers, controls which must be displayed on the operational panel that separates them from the live parts. 06/02/1919 in parliament cabinet performance of Class I operational panel can be of conductive or insulating material. At ASU Class II This panel should only be insulating. 02/06/1920 In the ASE performance of Class II cabinet shell and insulation operational panel on 06.02.1919 should preclude access to both the electrical and a conductive parts located inside the shell. 02/06/1921 in distribution to individual panels or more protective devices (if they are the fuses) is recommended to provide control apparatus. Control apparatus may also be available to block automatic lighting controls, regardless of their place of accommodation. 02/06/1922 in parliament should include interior lighting (in multipanel parliament - in each panel) for maintenance and repairs for disabled introductory unit. 06/02/1923 Behind the doors of one-and multipanel parliament should provide protective barriers that cover all or part of the most dangerous places to avoid accidental touch uninsulated live parts in the direction normal access to the machine. 06/02/1924 Protections switching input devices such as chopping should preclude release of the arc, dangerous for the operator, and the occasional touch of the neighboring live parts when performing switching operations. 06/02/1925 Detachable membrane and internal barriers should be removed only with tools. 06/02/1926 Controls units in single-and multipanel parliament should be located at an altitude of 600 to 1800 mm from the lower base, the scale of meters - at the height of 1000-1800 mm. For a cabinet position established by parliament in the height of the government apparatus and scales of meters from the floor is determined based on the above values. 02/06/1927 In the one-and multipanel ASU placed outside the switchboard room, the doors should be locked with a key, but in one-and multipanel ASU, designed for installation in elektropomescheniyah, doors can be closed with a key or keyless (see also 02/06/1915 ). During the execution of parliament cabinet doors can be closed with a key or without key. If the doors of parliament closed without a key, then they should be provided with a device that eliminates their spontaneous opening. The required number of keys for locks parliament should be installed in the technical specifications for specific types of ASU. 02/06/1928 Doors ASU and door compartments, if any, should be opened at an angle, which provides free access to the equipment, but not less than 95 °. 02/06/1929 For metering a compartment door or the door of one-and multipanel ASU should be the window closed impact-resistant transparent material. These windows may be provided in the door of parliament cabinet performance. Note - It is allowed to carry out the window for taking meter readings in parliament, installed in the switchboard room. 06/02/1930 panel, intended to join fire-fighting equipment should have side walls to locate the equipment installed in it, and its exterior side must be painted red. 06/02/1931 in the one ASE, as well as in extreme panels multipanel ASU sides shall be removable for ease of maintenance. In the panels, occupying an intermediate position in multipanel ASU, the side walls can not be installed if it is not required for the localization of blocks of the device, as indicated, for example, 06/02/1930. 06/02/1932 Mechanical strength of attachment of removable components and hulls, walls, fences should comply with GOST R 51321.3. 02/06/1933 In the one-and multipanel ASU, which fuses used should be provided on the inner side of doors or in other places "pockets" for storage of spare fuses and fuse devices to replace them. 06/02/1934 in parliament of all types should be provided a storage compartment for operating instruments 6.12.1. In addition, inside the door or in other places that are convenient for viewing, should be fixed electrical wiring ASP. 06/02/1935 Installation (mounting) of one-and multipanel ASU should include on the floor (the floor). ASU cabinet must be modified by type of installation: floor, wall, built-in niches. ASU should be clamping elements appropriate to the kind of installation. 02/06/1936 ASE enshrined in the position to have sufficient rigidity, eliminating the strain, negatively affecting the work of machines and devices at the bumps and shocks caused by turning on and off-current switching devices, as well as inrush currents and short circuits. 06/02/1937 Shell ASE must withstand the shocks of at least 0.7 J. 06/02/1938 one pane of parliament and the panel multipanel ASU should have stropovye devices for lifting, lowering and holding them suspended in the assembly and rigging work. Stropovye devices should be provided in each of the four corners on the upper surface of the parliament or the panel. 06/02/1939 Payload stropovyh devices at the direction of sling angle of 45 ° should be for one pane ASE ASE equal to the mass divided by the number of involved sling (no more than two). For panels multipanel parliament, which may be joined by three panels in the transport block capacity is equal to the total mass of the three panels, divided by the number of involved sling (no more than four). 06.02.1940 If the stropovyh devices used eyebolts, then they should comply with GOST 4751. In the development of special stropovyh devices applied to ASE should be guided by GOST 13716. Safety factor stropovyh devices in conjunction with the ASU position when climbing without jerks should not be less than 1.5. 6.3 6.3.1 Internal circuit for the internal circuits of parliament should be applied copper insulated wires, copper or aluminum bus (preferably a copper-clad). PE protective earth bus should be done in brass. Allowed protective tire PE are made of steel with a metallic coating, and their equivalent conductance should correspond to the conductivity copper bars, which take in accordance with section 6.3.3. Overtemperature protection of tires in a long time allowable current equal to 50% of rated current parliament, should not be more established in 6.8.1. Note - The requirement relating to the excess temperature protection of tires due to the possibility of acceding to the PEN-conductor power lines in accordance with GOST R 50571.3 30331.3/GOST. 6.3.2 The cross section of prefabricated phase tires should be chosen depending on the values ??of the rated current input devices, shown in Table 2, the allowable their heating on 6.8.1. 6.3.3 Sections of busbars - zero protective PE and zero labor N - should be taken accordingly in tables 3 and 4, depending on the section of precast phase tires. 6.3.4 Connections to phase busbar conductors internal circuits belonging to the individual protective devices or groups of devices connected by a connecting element, or blocks, should be performed collapsible. 6.3.5 On the prefabricated zero workers tire N and zero defensive tires PE must be able to join the respective collapsible wire for both internal and external circuits. 6.3.6 In multipanel ASU teams phase bus usually operates within the distribution panels and protective earth PE and zero workers N busbars - within each panel ASU - the introduction and distribution. 6.3.7 Connections busbar panels at 6.3.6 should be collapsible, and the phase bus is recommended to combine flexible interpanel jumpers, and zero and zero protection workers - directly with each other or with the use of bus bridges. 6.3.8 Jumpers for 6.3.7 should be made of the same material as the mating of the tire, and their cross section should not be less than the cross section of these tires. 6.3.9 If the jumper to 6.3.7 have a lower allowable temperature rise against the joined bus (eg by making them out of the insulated wires), then their cross section should be increased. 06/03/1910 busbars shall be arranged and fixed so that under normal operating conditions preclude the possibility of internal short circuit. 06/03/1911 Busbars should have resistance to electro-dynamic and thermal effects of short-circuit current in accordance with 6.8.2. 06/03/1912 protective earth PE and zero labor N busbar should be placed in close proximity to each other in a location convenient for connection of external conductors. Protective earth bus should be positioned below the zero-working bus at a height from the base of parliament, enough to ensure that the normalized bending radius with the largest section, which can be attached to the parliament. 06/03/1913 protective earth busbars PE should have an electrical connection with exposed conductive parts of the ASU class I, and zero working bus N - are isolated from them (at remove the jumper on 03/06/1915). 03/06/1914 protective earth bus PE in parliament cabinet performance of Class II shall be insulated from the conductive parts as well as the live parts. 06/03/1915 As supplied ASU PE protective earth and neutral main N busbars should connect removable bridge section, equal to zero cross section of the working bus N, which must ensure the readiness of parliament to join the four-mains with combined protective earth and neutral conductor - PEN- conductor. If the parliament should join pyatiprovodnoy network with zero workers N and zero PE protective conductors (the system is TN-S), then the jumper should be removed, that should be established in production with a producer. 06/03/1916 protective earth PE and N conductors zero workers should differ in color. According to GOST 50462 protective conductors should have a greenish-yellow color, neutral - blue. Zero protection and zero workers tires may be marked by signs, respectively, "PE" and «N», and in the ASU multipanel these designations should be applied to tire of each panel. Other conductors of the internal circuits must be marked according to the 03/06/1927. 06/03/1917 Section of phase conductors, the acceding single protective devices to busbars should be selected for rated currents of these devices and not be less than 1.5 mm2. 03/06/1918 Section of fasteners protective devices (for 6.3.4) and the conductors connecting these elements with the busbars should be determined depending on the total current devices attached to them, multiplied by a factor of simultaneity according to Appendix B. If the connection mentioned conductors these coupling elements can not be used clips findings of protective devices involved in joining a group of devices (for a mismatch-section terminals or devices under heating conditions), it should provide a clamp on connectors for these wires, or transient clamps for connection of conductors with the findings vehicles. 06/03/1919 Conductor internal circuits of the blocks (for example, the unit will automatically control lighting) shall be as set forth regulations on the vehicles to which they are attached, or, if such information is available on the conductors, selected for rated currents of devices. Method of joining wires to devices depends on the design of their conclusions. 06/03/1920 current circuit extending from the current transformers to the meters must be carried out with copper insulated wires of not less than 2.5 mm2 circuit voltage - the copper wires of not less than 1.5 mm2. 03.06.1921 The control circuits should be carried out guides section set for connect their associated equipment. 06/03/1922 conducts internal circuits should not be intermediates. 06/03/1923 lining of insulated wire should be carried out in the field provided so that they do not touch uninsulated live parts and sharp edges of the conducting part of the ASE, and the radii of curvature were equally normalized values. The wires should not interfere with assembly and dismantling aids. Conductor, joins a zero discharger with a protective tire PE, should be routed separately from other conductors. Conductors of control circuits and should be routed separately. 03/06/1924 For large flows of small sections of the wires should be routed in the form of bundles or placed in boxes, while the number of wires, united in a bun or laid in a box, define the terms of allowable temperature rise at nominal operating currents of devices to which they are attached . 06/03/1925 In places the passage of wires through walls or wall sections (panels) to provide measures to avoid damage to their isolation (chamfering the holes, use walk-through sleeves). 03/06/1926 Conductors shall be insulated for the voltage to 660 V AC. This requirement also applies to the conductor connecting the arrester (surge) with a protective tire PE. 06/03/1927 conducts internal circuits must be at the ends of the digital marking, in accordance with the electrical circuits of parliament. Marking shall be in sharp contrast with the color of wire insulation, be resistant to wear and easy to read. At the ends of precast phase buses, unless otherwise indicated in the diagrams should be labeled L1, L2, L3. 6.4 Connecting terminals 6.4.1 In the ASE should be provided terminals (hereinafter - the clips), which should provide a reliable connection of conductors of external and internal circuits and the means to stabilize the contact pressure in accordance with GOST 10434. 6.4.2 Terminals for phase busbars shall ensure adherence of copper conductors internal circuits of a cross section from 1.5 mm2 to the values ??calculated from 06/03/1917 and 06/03/1918. 6.4.3 At zero protective tire PE and zero working bus N must be provided clamp for internal circuits and external conductors of distribution chains and groups, as well as conductors mains. Conductor whose accession should provide clips - according to 6.4.4. At zero containment bus PE, except these times, should include: a) clamp to attach protective earth conductor, which connects the protective tire PE parliament to the main earthing electrical installations defined by GOST R 50571.10. Section of the conductor, to which must be rated clip, must be taken from Table 3, and b) clamp to attach the grounding conductor cross section according to Table 3, but not less than 25 mm2 of copper and 50 mm2 for the steel according to GOST R 50571.10. Note - The Clip is used when the protective tire ASU is used as a main earthing bus electrical c) clamp for joining wire bonding section from 6 to 25 mm 2 according to GOST 50571.10, d) clip to attach the conductor cross section of 10 mm2, which connects the spark gap with a protective tire PE. 6.4.4 Terminals provided for the zero protective tire PE and zero working bus N to join the conductors internal circuits and external conductors of the distribution group chains should ensure adherence conductor cross-section from 1,5 mm2 up to the values ??determined from tables 3 and 4, depending from the section of phase conductors. Terminals for connection of the conductors of the mains supply must provide connection of conductors cross-section to stage more than specified in Tables 3 and 4. Number of times on the buses for conductors mains to be determined taking into account inputs ASU schemes according to Appendix A. Table 3 - Cross sections of phase and the corresponding protective earth conductor PE mm2 cross-section S phase conductor cross-section corresponding protective conductor S ? 16 S 16