GOST 51321.3-99 (IEC 60439-3-90) UDC 621.316.3.027.2:006.354 Group E71 STATE STANDARD OF THE RUSSIAN FEDERATION UNIT low-voltage switchgear and controlgear Part 3: Additional requirements for distribution and control devices that are intended to in areas accessible to unqualified personnel, and test methods for Low-voltage switchgear and controlgear assemblies. Part 3. Particular requirements for low-voltage switchgear and controlgear assemblies intended to be installed in places where unskilled persons have access for their use. Distribution boards ACS 29.130.20 29.240.30 OKS 3430 Effective date 1/7/2000 Preface 1 developed and submitted by the Technical Committee for Standardization TC 331 "Low-voltage switchgear and Distribution Management 2 adopted and put into operation the Decree Russian State Standard of October 6, 1999 . № 328-item This standard is the authentic text of the International Standard IEC 60439-3-90 Devices Low Voltage Distribution and Control. Part 3. Specific requirements for low voltage distribution and control, intended to be installed in areas accessible to unqualified personnel during their operation "with Amendment number 1 (1993) and additional requirements taking into account the needs of the economy three first introduced in April reprint. February 2003 Introduction This standard is designed as a supplement to GOST 22789-94 (IEC 439-1-85) to ensure the development and regulation of development in production and operation of new low-voltage devices (hereinafter - NKU), intended for use in the field available to non-qualified staff). Standard contains the full authentic text of the international standard IEC 439-3 (1990) "Low-voltage distribution devices and controls designed to be mounted in areas accessible to unqualified personnel during their operation" with Amendment number 1 (1993) and additional requirements tailored to the needs economy. In the European Economic Community on the low-voltage complete devices allocation and management of current European standards EN 60439-3 (1991) with the change in N 1 (1994). Requirements of European standard are not different from the IEC 439-3-90 with a change in N 1 (1993). This standard applies in conjunction with GOST 22789-94. He adds, deletes or modifies the relevant sections (paragraphs) of interstate standard GOST 22789-94. If this standard does not refer to a specific item GOST 22789-94, the requirements of paragraph GOST 22789-94. If this standard indicated addition, alteration or replacement of, the requirements, test methods, or note in accordance with GOST 22789-94 should be adjusted accordingly. This standard sets out the requirements and test methods that are complementary to, change or eliminate the relevant sections and (or) items GOST 22789. The requirements of this standard are mandatory. Additions to accommodate the needs of the economy, in the text of the standard bold, and are given in Appendix F. 1 Scope Scope - GOST 22789 with the following modifications. 1.1 Substitution 1.1 This standard applies to low-voltage complete devices (hereinafter - NKU), intended for the reception and distribution of electric power, control, monitoring, alarm and security equipment, carrying out the use of electrical energy in a domestic environment or other places where their use has access unqualified staff (eg, to perform switching operations and replace fuses) and illumination boards for industrial, public and residential buildings. The standard establishes additional requirements for stationary CLE for indoor use, rated voltage of which phase to earth less than 300 VAC, 50 Hz. Weekend lines have protective devices against short circuits, the rated current of each of them does not exceed 125 A with a total current of the feeding of 250 A. The standard does not apply to the set of components such as circuit breakers, electronic equipment, etc., requirements which set the relevant standards. Established by this standard specifications, types and test methods can be concretized and supplemented in the specifications for NKU and (or) the specifications agreed upon between the manufacturer and consumer. The standard should be applied in conjunction with GOST 22789. 1.2 Change of Note - The first paragraph read as new text: "Numbering sections and paragraphs corresponds to the interstate standard GOST 22789. 1.4 Changing the fourth paragraph to read as new text: "GOST 27.003-90 Reliability in engineering. The composition and the general rules set requirements for reliability." The sixth paragraph to read as new text: "GOST 14254-96 (IEC 529-89) Degrees of protection provided by enclosures (code IP)". The fourteenth paragraph is deleted. Section add the following standards: GOST 16962.1-89 (IEC 68-2-1-74) Electrotechnical products. Test methods for resistance to climatic external influencing factors GOST 27483-87 (IEC 695-2-1-80) Tests for flammability. Test methods. Tests of a heated wire to GOST 28216-89 (IEC 68-2-30-87) Basic methods of testing the effect of external factors. Part 2. Test. Test Db and guidance. Damp heat, cyclic (12 +12 hour cycle) GOST R IEC 335-1-94 Safety of household and similar electrical appliances. General requirements and test methods "2 Definitions of Terms and Definitions - as per GOST 22789 with the following changes and additions. Section 2 Clauses 01/02/1910 and 04/02/1915." 1/2/1910 distribution panel: GCC, consisting of switchgear or protective devices ( For example, fuses), connected to one or more output circuits fed from one or more incoming circuits, and terminals for the neutral conductor and the conductor circuits. It may also include alarms and other monitoring devices. 02/04/1915 details aesthetic purpose: The details, which are intended only to improve the appearance of the GCC and that do not provide any electrical or mechanical protection. "Paragraphs 2.2.7-2.2.12, 2.3.1-2.3.4, 2.5.4 , 2.7 should be deleted. 3 Classification Classification NKU - GOST 22789 with the following modification. The fourth paragraph should be deleted. 4 Electrical characteristics Electrical characteristics CLE CLE - GOST 22789 with the following changes and additions. Paragraph 4.2 Renumber paragraph 4.2 to 4.2.1 Section 4 to add paragraph 4.2.2 "4.2.2 Rated current distribution panel. Rated current distribution panel - is the one given by the manufacturer as a nominal member of the current circuit (circuits). If there are multiple incoming circuits, the rated current of the distribution panel is the sum of rated currents of all the incoming circuits, designed for simultaneous use. This current should not cause heating of all parts of the panel beyond the values ??specified in 7.3, test them in accordance with 8.2.1. "Paragraph 4.8 Table 1 present the new version of Table 1: Number of devices for protection from current overload on the phase of simultaneity factor 2 and 3 0.8 0.7 4 and 5 from 6 to 9 inclusive. 0.6 10 and more than 0,5 5 Information to be submitted for CLE information presented on NKU - GOST 22789 with the following changes and additions. 5.1 Change First paragraph with the words: "nameplates can be placed behind the door or a removable part of the outer shell." The second paragraph. Replace the words: "The data specified in the transfer of a)-c)" to "Data provided in transfers a)), d ), e), k) and p). The third paragraph. Replace the words: "The data given in the transfers r)-n)" with "The data given in the rest of the transfers." fourth paragraph. Replace the words: "... on transfers r)-n )..." to "... for the rest of the transfers." add a paragraph to add the paragraph: p) Rated current distribution panel (in accordance with Clause 4.2.2). Supplement Section 5 to add paragraph 5.2: "5.2 scheme is applied and designations must meet the requirements of relevant IEC standards." 6 Operating conditions - according to GOST 22789 with the following modifications. Paragraph 6.2.9 to present the new version: "6.2.9 Installation of the elements, while decreasing the allowable current loads or breaking capacity. For NKU built-in insertion into the wall is not considered as a special condition ". 7 Embodiment Embodiment - GOST 22789 with the following additions and changes. Firefox 7.1.1 first paragraph add the words (in the beginning of a paragraph):" NKU is intended for use by unskilled personnel shall be designed as NKU subjected to standard tests. "add the words (at the end of the paragraph):" For parts of the distribution panels, made of insulating material, heat should be checked in accordance with the 02/08/1911. Resistance of insulating material to abnormal heat and fire, caused by internal electrical defects that must be checked in accordance with the 08/02/1912. "The second paragraph. The second sentence add the words:" Constructive elements of distribution panels, including a shell made of iron or steel, must have an appropriate resistance corrosion resistance when tested in accordance with the 08/02/1910. "The third paragraph with the words:" Shells distribution panels must additionally withstand an impact test in accordance with 8.2.9. Note - The decorative details and elements of the individual components should not be subjected to the impact test. "Complete the paragraph:" Any portion of the outer shell, which must be removed during installation or maintenance, should not be used to support component elements, which are connected by wires, if these conductors subjected to any influence, when this part of the outer shell is removed. In this case, should be applied to the door hinges. Doors and similar devices fitted with hinges, should provide easy access and facilitate the work of built-in set of elements. "Paragraph 7.1.3.5 to read as the new edition:" 7.1.3.5 There should be clips off the neutral conductor, but these should match the number of outgoing neutral conductors. These terminals shall be located or identified in the same sequence as the corresponding phase conductor terminals. Clamps shall be provided as to protective conductors of incoming and outgoing circuits, which must be arranged or marked in this way and for any connecting wires, which may be required (for example, depending on the scheme). "Paragraph 7.2.1.1. Second paragraph. Delete link to IP00. Paragraph 7.2.1.4. Replace the words: "For example IP00, operational surface IP20" to "For example: IP20, operational surface IR30." Paragraph 7.2.1.5 be deleted. Paragraph 7.4.2 add the paragraph: "Open NKU not covered by this the standard. "Paragraph 7.4.2.2.1. The first sentence should read as new text:" All available surfaces should have a degree of protection not less IP2XC (in accordance with GOST 14254). "Complete the paragraph:" Built equipment must have a degree of protection specified in relevant product standards. Note - Degree of protection test, when all equipment is installed for use in accordance with the manufacturer's instructions. "Paragraph 7.4.3.1.5. Enumeration b). The first paragraph. Delete the word" and pull. "The second paragraph should be deleted. Paragraph 7.6.1. second paragraph. Delete: "(eg, open or closed)." Paragraph 7.4.5 shall be deleted. Paragraph 7.6.4. Delete the word "... and pull-out" ... Paragraph 7.6.4.1. First paragraph. Delete : "and pull." fourth, fifth and sixth paragraphs, and Table 6 should be deleted. Add the paragraph: "Pull-out part is not permitted in the GCC to be installed in areas accessible to unqualified personnel during their operation." Paragraph 7.6.4.2 be deleted. Item 7.6.4.3. Delete the word "and / or drawers." Paragraph 7.6.4.4. The second paragraph should be deleted. Paragraph 7.7 add the paragraph: "Fencing may not be used if the chain of low voltage cables are laid, isolated in accordance with a voltage between phase and earth main circuits. Conductors are ultra safe low voltage circuits must be laid in separate compartments or are separated from conductors of circuits of different voltages by means of metal boxes or hoses connected to the protective conductor, if their insulation is not designed for the highest voltage that can occur in strings or multicore cables, grouping conductors. "Paragraph 7.8.3.6 be deleted. 8 Types and methods of test types and test methods - according to GOST 22789 with the following changes and additions. Paragraph 8.1 set out a new version:" 8.1 Types of tests. To check compliance with CLE requirements of this standard perform the following tests: - standard - acceptance. Note - Types of testing NKU and their names taken according to GOST 22789. For national economic output in accordance with GOST 16504 provides the following types of testing: qualification, periodicals, acceptance, and model. Program type testing in accordance with GOST 22789 is the basis for the establishment of programs of any routine tests on NKU. "Paragraph 8.1.1 to present the new version: 8.1.1 Type tests are intended to verify compliance with CLE technical requirements of this standard. Model tests are carried out as completely or partially, if introduced into the construction of NKU changes that may adversely affect the specifications of NKU. Table 7 - List of checks and tests on NKU at typical test assesses characteristics Items Type tests according to 8.1.1 Test sequence (group) A and B) limits excess temperature 8.2.1 Checking the limit temperature rise 3 * b) Dielectric Properties 8.2.2 Verification of dielectric properties of 4 2) strength of short-circuit 8.2.3 Test strength by short circuits 1 * g) Effectiveness of protective circuit 8.2.4 3 * Reliability of the connection between the unprotected parts of the NPISHs and conductive circuit protection 8.2.4.1 Checking the reliability of the connection between the unprotected parts of the NPISHs and conductive circuit protection through inspection and measurement of resistance strength protection circuit with short circuit 8.2.4.2 Checking the strength protection circuit short-circuit e) Clearances and creepage 8.2.5 Check air gaps and leakage paths of lengths 2 * e) Mechanical efficiency 8.2.6 Checking the mechanical performance are a) Protection 8.2.7 Checking the degree of protection 6 * h) Design and Labelling 8.2.8 Test design and labeling, and 1 *) Resistance to mechanical shocks 8.2.9 Check resistance to mechanical shocks 5 a) Resistance to corrosion and humidity 08/02/1910, 02/08/1913 Verification of resistance to corrosion and humidity 4 l) Heat insulation materials 02/08/1911 Check heat resistance insulating material 4 m) resistance of insulation materials to abnormal heat and fire resistance of materials Testing 08/02/1912 isolation to the abnormal temperature and fire, caused by internal electrical defects, 3 H) Mechanical strength of fastening means fencing 02/08/1914 Check the mechanical strength of fixing fences 2 ____________ * All samples must pass this test. Table 7a - The sequence of model testing group sequential test sequence of tests on Table 7, enumeration, A s, n, b, and g B e, g, m, l In a, b, d, k for each group of consecutive tests shall be provided for four separate samples. During tests on transfers as well), c), d), e), g) and h) in all samples should not be damaged, ie, they must all pass the tests. If the first sample, subjected to the same group sequential tests, maintains them, then further tests for this group does not hold. Otherwise, the test should be repeated on the remaining three samples, and all they have to endure them without any damage. "Paragraph 8.1.2. Table 7b to add features and paragraph: Table 7b - A list of inspections and tests conducted at NKU at acceptance test assesses characteristics Type of test items in accordance with 8.1.2 a) Installation, performance 8.3.1 Survey NKU, which includes verification of installation and, if necessary, test performance b) The dielectric properties of dielectric tests in 8.3.2) Countermeasures 8.3.3 Checking of protective measures and electrical continuity of circuit protection Dielectric test is not required to hold in distribution panels, containing only the busbars and (or) wire factory manufacturing the main circuit, the simple design, which is sufficient inspection in accordance with a transfer). Paragraph 8.2.1.1, last paragraph, delete Paragraph 8.2. .1.3. The second paragraph read as new text: "For this test the distribution panel is loaded with the rated current (see 4.2). This power shall be distributed among the smallest possible number of output circuits, so that through each of these chains passed the rated current multiplied by a factor of simultaneity, specified in 4.8. If the total load can not be accurately achieved using a certain number of vehicles loaded with this current, then a circuit can be loading a smaller shock to achieve a given total load. Fuses or circuit breakers must be installed according to manufacturer's specification, and the loss of power fuses should be specified in the test. (Tests can be performed with the use of artificial preservatives fuse with the maximum power losses, which are specified in the relevant standard). Note - The rate of simultaneity must be specified by the manufacturer. 8.2.1.3.2-8.2.1.3.4 Items deleted. Paragraph 8.2.2.2 to add a note: Note - This test is performed without a set of components intended for installation in openings of the shell NKU Paragraph 8.2. .5. The last paragraph should be deleted. Paragraph 8.2.6. The last paragraph should be deleted. Items 8.2.8.A 8.2.9.A and deleted. Section 8 Clauses 8.2.9-8.2.14: "8.2.9 Checking the resistance to mechanical shock. Verification shall be those unprotected parts of GCC, which can be subjected to mechanical shock, such as when mounted in the normal position ". 8.2.9.1 The test shall be conducted with the help of a spring shock devices, a technical description which is given in GOST R IEC 335 (Annex 1). Test performed on the samples, which until then should be soaked for 2 hours at a temperature of minus (5 ± 1) ° C. Sample 8.2.9.2 assembled (under cover or in the wall (shell), if any) is recorded in a normal position or placed on a rigid support. must be applied on three hits in five accessible locations and the front door (if any) construction of the sample. Each shot has to have an energy 0.7 J. The kick is not applied to the plug, built-in components that experienced by other standards , or other means of attachment, which are located beneath the surface so that they are not subjected to shock. Cable glands, which are not fitted with plugs which must be left open. If they are equipped with plugs, two of them should be open. before striking the fixing screws shell, caps and similar parts must be tightened with a screwdriver or test a wrench with a torque given in Table. 12. Table 12 - Torque for testing the mechanical strength of the thread diameter, mm Torque Nm Standard value range of diameters d I * II ** III *** 2,5 d ? 2,8 0,13 0,26 0,26 3,0 2,8
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