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GB 20041.24-2009 English PDF

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GB 20041.24-2009: [GB/T 20041.24-2009] Conduit systems for cable management -- Part 24: Particular requirement -- Conduit systems buried underground
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Basic data

Standard ID GB 20041.24-2009 (GB20041.24-2009)
Description (Translated English) [GB/T 20041.24-2009] Conduit systems for cable management -- Part 24: Particular requirement -- Conduit systems buried underground
Sector / Industry National Standard
Classification of Chinese Standard K65
Classification of International Standard 29.120.10
Word Count Estimation 16,161
Date of Issue 2009-05-06
Date of Implementation 2010-02-01
Adopted Standard IEC 61386-24-2004, IDT
Regulation (derived from) Announcement of Newly Approved National Standards No. 6, 2009 (No. 146 overall)
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This Chinese standard specifies requirements and tests for conduit systems buried underground (including conduit and conduit fittings), including those catheter system for the protection and management of electrical devices or communication system of the insulated conductor and/or cable conduits and conduit fittings. This standard applies to metals, non-metallic and composite materials catheter system, including the termination of these conduit systems threaded and non threaded conduit interface.

GB 20041.24-2009: [GB/T 20041.24-2009] Conduit systems for cable management -- Part 24: Particular requirement -- Conduit systems buried underground


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Conduit systems for cable management.Part 24. Particular requirement.Conduit systems buried underground ICS 29.120.10 K65 National Standards of People's Republic of China GB 20041.24-2009/IEC 61386-24.2004 Conduit systems for cable management Part 24. buried conduit system special requirements (IEC 61386-24.2004, IDT) Posted 2009-05-06 2010-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Introduction Ⅲ 1 Scope 1 2 Normative references 1 3 Definitions 1 4 1 General requirements 5 General conditions for test 1 6 Category 1 7 Marking and documents 2 8 Size 2 9 Structure 2 Mechanical properties 2 10 11 Electrical Properties 4 Thermal properties 4 12 13 flame effect 4 14 4 external influences 15 4 Electromagnetic Compatibility Appendix A (normative) Catheter System classification code 8 Appendix B (normative) Determination of the material thickness of 8 GB 20041.24-2009/IEC 61386-24.2004

Foreword

All technical content in this section is mandatory. GB 20041 "Conduit systems for cable management" is divided into two parts. --- Part 1. General requirements (GB/T 20041.1) --- Part 2. Particular requirements (GB 20041.21 ~ 20041.24) ● Part 21. Particular requirements for rigid conduit systems ● Part 22. Particular requirements for flexible conduit systems ● Part 23. Particular requirements for flexible conduit systems ● Part 24. Particular requirements for conduit systems buried underground This section of Part 24 GB 20041. This section should be GB/T 20041.1-2005 used in conjunction. This section identical with IEC 61386-24.2004 (first edition) "Conduit systems for cable management - Part 24. buried conduit Special requirements "of the system. This section of the Appendix A, Appendix B is a normative appendix. This part is proposed by the China Electrical Equipment Industrial Association. This part of the National Standardization Technical Committee electrical accessories. This section drafted by. China Electric Apparatus Research Institute, Hangzhou Hongyan Electric Co., Ltd., Guangdong Liansu Technology Industrial Co., Ltd. Foshan Gao Gu Plastic Co., Ltd., Guangdong CIQ. The main drafters of this section. Luohuai Ping, single toward Portland, I'm less full, Song Bo, Huang Weiling, Tangnian En, Li Lixin, Zhou Xiaoqing, Zhang Lan Chan. GB 20041.24-2009/IEC 61386-24.2004 Conduit systems for cable management Part 24. buried conduit system special requirements

1 Scope

GB/T 20041.1-2005 content of this chapter by the following alternatives. This section provides for the buried conduit system (including conduit and conduit fittings) requirements and tests. These include catheter system For the protection and management of electrical installations or communication systems insulated wire and/or cable conduit and conduit fittings. This standard applies to metallic, Non-metallic and composite conduit systems, including the termination of these catheter system interfaces catheter threaded and non-threaded.

2 Normative references

The following documents contain provisions which, through reference in this text, constitute provisions of this part. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this section, however, encourage the parties to this part of the research agreement Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this section. GB/T 20041.1-2005 of this chapter for the following modifications apply. GB/T 17194 NA GB 17466-1998 NA increase. GB/T 4217-2001 and the nominal outer diameter of said fluid delivery Thermoplastics pipes for the public (eqv ISO 161-1.1996) GB/T 1804-2000 General tolerances for linear and angular dimensions without individual tolerance tolerance (eqv ISO 2768-1. 1989)

3 Definitions

GB/T 20041.1-2005 this chapter apply.

4 General requirements

GB/T 20041.1-2005 this chapter apply.

5 General conditions for tests

GB/T 20041.1-2005 this chapter apply. Category 6 GB/T 20041.1-2005 after this chapter apply for the following modifications. modify. NOTE. Appendix A is not applicable. 6.1 Mechanical properties classified by Alternative. 6.1.1 Pressure Resistance 6.1.1.1 250 type (Code 250) NOTE. Press catheter system 6.1.1.1 Classification expected to bring additional protective measures to install these additional protective measures specified in the relevant national specification. GB 20041.24-2009/IEC 61386-24.2004 6.1.1.2 450 type (Code 450) NOTE. Press catheter system 6.1.1.2 Classification without additional protective measures are expected to be directly buried underground. 6.1.1.3 750 type (Code 750) NOTE. Press catheter system 6.1.1.3 Classification without additional protective measures are expected to be directly buried underground. 6.1.2 Impact 6.1.2.1 Light (Code L) 6.1.2.2 Normal (Code N) 6.1.3 Anti-bending 6.1.3.1 Rigid 6.1.3.2 Flexible 6.2 Classification according to temperature Not applicable.

7 Marking and documentation

GB/T 20041.1-2005 of this chapter for the following modifications apply. 7.1 Addition. In addition, the catheter should be marked. a) by 6.1.2 Classification code "L" or "N"; b) by 6.1.1 Classification code "250", "450" or "750", the code shall be marked immediately after the press a) marked code. 7.1.1 Not applicable increase. 7.1.101 conduit should be identified in accordance with the requirements of 7.1. Logo should at regular intervals along the full length of the catheter, as the most suitable interval 1m, not more than 3m. 7.3 and 7.4 do not apply. 7.6 Addition. Note 3 after the increase. Note 4. considering alternative tests. increase. 7.101 manufacturers should provide information in its proper installation and use of all safety information required. In addition, the classification of the catheter system according to 6.1.1.1, the manufacturer shall provide instructions to install protective measures (if appropriate country Technical regulations). Size 8 Alternative. Catheter size should take precedence table 101 in accordance with the requirements. The minimum inner diameter of qualified or not, by measuring two perpendicular diameters on the same cross section and calculate the average to check. An outer diameter of qualified or not, using a ring gauge or other appropriate means to check.

9 Structure

Except as follows, GB/T 20041.1-2005 this chapter apply. 9.3 and 9.4 do not apply. 10 Mechanical properties GB/T 20041.1-2005 of this chapter for the following modifications apply. GB 20041.24-2009/IEC 61386-24.2004 10.1.4 Replacement. Compliance is checked by inspection test 10.2 to 10.4. 10.2 Pressure test Alternative. 10.2.1 catheter is subjected to a pressure test. Note. Parts of the pressure test is under consideration. Test catheter containing non-metallic materials to begin trials in their manufacture after 10d. 10.2.2 sample length (200 ± 5) mm. 10.2.3 Test before, according to the provisions of Chapter 8 of the measurement samples of outer and inner diameters. 10.2.4 The sample is pressed between two minimum size of 100mm × 220mm × 15mm flat steel specimen long side facing the plate The long side 220mm. Press (15 ± 0.5) mm/min rate of pressure samples in the vertical bending load recorded at the equivalent of the original inner diameter of the sample 5% of the average. 10.2.5 When the 5% deformation, applied pressure should be at least. --- For the catheter according to 6.1.1.1 for the 250N. --- For the catheter according to 6.1.1.2 for the 450N. --- For the catheter according to 6.1.1.3 for the 750N. NOTE. calculated deformation amount in the inner diameter, the outer diameter is sufficient but the measurement. In cases of doubt, we need to measure the inside diameter. 10.2.6 After the test, it should not make light or water into the cracks between the inside and outside. 10.3 Impact test Alternative. 10.3.1 Test apparatus 101 shown in FIG. 12 for each length (200 ± 5) mm conduit conduit fittings or sample impact test. Catheter tested separately. Accessories mounted on the catheter test. Note 1. If necessary, you can adjust the test conduit fittings, without conditions affect the test results. Note 2. The hammer is a hammer mass plus the guide bracket. 10.3.2 test equipment to be placed on a stable surface. Sample into a temperature (-5 ± 1) ℃ the freezer 2h. Samples were taken from the freezer box, 101 V-shaped seat in Fig shown. Weight drop impact of each sample 1, sample was removed from the freezer to the completion of the impact between the time should not exceed 10s, such as the energy value Specified in Table 102. Conducted on the impact of the weakest parts of the catheter, but within the range 5mm inlet conduit without impact. The point of impact of the catheter specimen The midpoint of its length. When 10.3.3 After the test, the sample reached (20 ± 5) ℃, the sample in the vertical position, under its own weight and can no initial velocity case, 10.4.3 Specified in the appropriate ball through the catheter. You can not have signs of cracking, or between the inside and outside so that there can be no light or water It cracks. 12 samples should be at least nine have passed the test. 10.4 Bending test Alternative. 10.4.1 use flexible conduit for this test. 10.4.2 by six lengths suitable sample for this test, three samples were tested at room temperature, and the other three at (-5 ± 1) ℃ into Line test. For the test under -5 ℃, 2h to put the sample in a freezer. Test device by the device 102 shown in FIG constitution, conduit bending radius of the minimum bending radius specified by the manufacturer. GB 20041.24-2009/IEC 61386-24.2004 One end of the sample with a suitable device fixed on the test device, and then the sample was bent nearly 90 ° angle. For in the freezer Box of samples to be taken from inside the freezer 10s bent. 10.4.3 During the test, the sample should not be crushed. Whether eligibility, use a diameter equal to the manufacturer's declared minimum inner diameter of the sample (95 + 10) percent of the ball by bending around the test apparatus Samples to check. 10.5,10.6,10.7 and 10.8 do not apply. 11 Electrical Performance Except as follows, GB/T 20041.1-2005 this chapter apply. 11.1 to 11.3 is under consideration. 12 Thermal Performance GB/T 20041.1-2005 This chapter does not apply. 13 flame effect Except as follows, GB/T 20041.1-2005 this chapter apply. 13.1.2 under consideration. 14 external influences GB/T 20041.1-2005 this chapter apply. 15 Electromagnetic Compatibility GB/T 20041.1-2005 this chapter apply. Table 101 vessel diameter Nominal dimensions mm Nominal outside diameter mm tolerance mm Minimum inner diameter mm 2525 +0.5 018 3232 +0.6 024 4040 +0.8 030 5050 +1.0 037 6363 +1.2 047 7575 +1.4 056 9090 +1.7 067 110 110 082 +2.0 125 125 +2.3 094 0 106 140 140 +2.6 0 120 160 160 +2.9 GB 20041.24-2009/IEC 61386-24.2004 Table 101 (continued) Nominal dimensions mm Nominal outside diameter mm tolerance mm Minimum inner diameter mm 0135 180 180 +3.3 0150 200 200 +3.6 225 225 +4.1 0170 0188 250 250 +4.5 NOTE. nominal outside diameter according to GB/T 4217. An outer diameter (the OD) tolerance as follows. Minimum OD. nominal outside diameter Maximum OD. nominal outside diameter + (0.018 × nominal diameter value) rounded to 0.1mm. Minimum diameter. nominal outside diameter divided by 1.33. Table 102 impact test energy value Nominal size catheter mm Light (L) Normal (N) Weight quality kg (+1 0)% Drop height mm (0-1)% energy Weight quality kg (+1 0)% Drop height mm (0-1)% energy ≤60 3 100 3 5 300 15 61 ~ 9032006540020 91 to 140,340,012,557,028 > 140,350,015,580,040 GB 20041.24-2009/IEC 61386-24.2004 Tolerance according to GB/T 1804 level of m 1 --- frame; 2 --- support rod; 3 --- graduated scale; 4 --- guide bracket; 5 --- hammer head; 6 --- 120 ° V-shaped seat; 7 --- steel seat. Note. The design of this figure can not be limited, subject to the icon size requirements. 101 Impact test apparatus GB 20041.24-2009/IEC 61386-24.2004 1 --- sample; 2 --- bending cylinder in the center; 3 --- base; 4 --- catheter guide block. FIG bending tester 102 GB 20041.24-2009/IEC 61386-24.2004

Appendix A

(Normative) Catheter system of classification codes GB/T 20041.1-2005 This appendix is not applicable.

Appendix B

(Normative) Determination of material thickness GB/T 20041.1-2005 of this Appendix apply. GB 20041.24-2009/IEC 61386-24.2004

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