1、DEUTSCHE NORM January 1997 DIN Corrugated flexible metallic hose assemblies for the protection of electrical cables in explosive atmospheres (IS0 10807: 1994) English version of DIN EN IS0 10807 IEN IS0 10807 This standard incorporates the English version of Is0 10807. ICs 29.260.20 Descriptors: Pip
2、ework, hose assemblies, electrical cables, protection, explosive atmosphere Rohrleitungen - Flexible gewellte metallische Schlauchleitungen fr den Schutz elektrischer Leitungen in explosions- gefhrdeter Atmosphre (IS0 10807 : 1994) European Standard EN IS0 10807: 1996 has the status of a DIN Standar
3、d. National foreword This standard has been published in accordance with a decision taken by ECISSTTC 29 to adopt, without alteration, International Standard IS0 10807 as a European Standard. The responsible German body involved in its preparation was the Normenausschu Rohre, Rohrverbindungen und Ro
4、hrleitungen (Pipes, Pipe Joints and Pipelines Standards Committee), Technical Committee Schlauchleitungen aus Metall. The DIN Standards corresponding to the International Standards referred to in clause 2 of the EN are as follows: International Standard DIN Standard IS0 427 DIN 17662 IS0 683-1 3 DIN
5、 17440 IS0 1634-1 DIN 17670-1 and DIN 17670-2 IS0 6708 IS0 7-1 DIN 2999-1 DIN EN IS0 6708 Standards referred to (and not included in Normative references and Annex ZA) DIN 2999-1 Pipe threads for tubes and fittings - Parallel internal threads and taper external threads - Thread dimensions Technical
6、delivery conditions for stainless steel plate, hot rolled strip, and bars for pressure purposes, drawn wire and forgings Copper-tin alloys - Composition Wrought copper and copper alloy plate, sheet and strip - Properties Wrought copper and copper alloy plate, sheet and strip - Technical delivery con
7、ditions Pipe components - Definition of nominal size (DN) DIN 17440 DIN 17662 DIN 17670-1 DIN 17670-2 DIN EN IS0 6708 EN comprises 10 pages. No part of this standard may be reproduced without the prior permission of Ref. No. DIN EN IS0 10807: 7997-01 DIN Deutsches Institut fur Normung e. V., Berlin.
8、 Beuth Verlag GmbH, Berlin, has the exclusive right of sale for German Standards (VIN-Normen). Price group 07 Sales No. 1107 07.97 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IS0 10807 August 1996 ICs 29.260.20 Descriptors: Pipework, hose assemblies, electrical cables, protection, explosive
9、 atmosphere. English version Pipework Corrugated flexible metallic hose assemblies for the protection of electrical cables in explosive atmospheres (IS0 10807 : 1994) Tuyauteries - Tuyauteries mtalliques flexibles onduleuses destines la protec- tion de cbles lectriques dans les atmosphres explosives
10、 (IS0 10807 : 1994) Rohrleitungen - Flexible gewellte metal- lische Schlauchleitungen fr den Schutz elektrischer Leitungen in explosionsge- fhrdeter Atmosphre (IS0 10807 : 1994) This European Standard was approved by CEN on 1996-01-06 and is identical to the IS0 Standard as referred to. CEN members
11、are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to
12、 the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same s
13、tatus as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. CEN European Committee for Standardiza
14、tion Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels O 1996. GEN - All rights of exploitation in any form and by any means reserved worldwide for CEN national members. Ref. No. EN IS0 10807: 1996 E Page 2 EN IS0 10807:1996 Forewo
15、rd International Standard IS0 10807: 1994 Pipework - Corrugated flexible metallic hose assemblies for the protection of electrical cables in explosive atmospheres, which was prepared by ISO/TC 5 ?Ferrous metal pipes and metallic fittings? of the International Organization for Standardi- zation, has
16、been adopted by Technical Committee ECISSTTC29 ?Steel tubes and fittings for steel tubes? as a European Standard. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, and conflicting national standards withdrawn, by Ma
17、y 1997 at the latest. In accordance with the CENKENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzer
18、land, and the United Kingdom. 1 Endorsement notice The text of the International Standard IS0 10807:1994 was approved by CEN as a European Standard without any modifi- cation. NOTE: Normative references to international publications are listed in Annex ZA (normative). Scope This International Standa
19、rd specifies the design char- acteristics of corrugated flexible metallic hose which can be used to protect electrical wire and cable in explosive atmospheres or atmospheres where there is a risk of fire. These hoses can be used as static protection or for the protection of cables moved in- frequent
20、ly, occasionally, or less than once week. This International Standard also provides instructions for the use of these hoses (see annex A) and the tests required for type approval (see annex B). 2 Normative references The following standards contain provisions which, through reference in this text, c
21、onstitute provisions of this International Standard. At the time of publi- cation, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most re- cent edit
22、ions of the standards indicated below. Members of IEC and IS0 maintain registers of cur- rently valid International Standards. IS0 7-1 :1994, Pipe threads where pressure-tight joints are made on the threads - Part I: Dimensions, tolerances and designation. IS0 427: 1983, Wrought copper-tin alloys -
23、Chemical composition and forms of wrought products. 1) To be published. (Revision of IS0 6708:1980) 2) To be published. (Revision of IS0 7369:1983) IS0 683-1 3: 1986. Heat-treatable steels, alloy steels and free-cutting steels - Part 13: Wrought stainless steels. IS0 1634-1 :I 987, Wrought copper an
24、d copper alloy plate, sheet and strip - Part 1: Technical conditions of delivery for plate, sheet and strip for general pur- poses. IS0 4948-1:1982, Steels - Classification - Part I: Classification of steels into unalloyed and alloy steels based on chemical composition. IS0 4948-2: 1981, Steels - Cl
25、assification - Part 2: Classification of unalloyed and alloy steels according to main quality classes and main property or applica- tion characteristics. IS0 6708:-?, Pipe components - Definition of nominal size DN. IS0 7369:-2?, Pipework - Flexible metallic hoses - Vocabulary of general terms. 3 De
26、finitions For the purposes of this International Standard, the definitions given in IS0 7369 apply. 4 Manufacturing process The process for manufacturing leakproof corrugated flexible metallic hose complying with this International Standard is at the discretion of the manufacturer. Page 3 EN IS0 108
27、07: 1996 5 Materials 5.1 Metallic hose The metallic hose shall -e manufactured from either a) copper alloy with copper content 94 % or above, in accordance with IS0 1634, or b) austenitic stainless steel, in accordance with IS0 683-13. 5.2 End fittings End fittings shall be manufactured from either
28、a) steel corresponding to the classification of non- alloy steels given in IS0 4948-1 and IS0 4948-2, or b) austenitic stainless steel, in accordance with IS0 683-13. 5.3 Braiding Braiding shall be carried out using either a) bronze wire in accordance with IS0 427, or b) austenitic stainless steel,
29、in accordance with IS0 683-13. 5.4 Welding Hose components can be joined by a) braze welding; b) electric welding (MIG, MAG, TlG), microplasma welding (MP) or impulse welding. Adhesive bonding and tin soldering are excluded. 6 Dimensions and performance 6.1 The dimensions and performance of corrugat
30、ed flexible metallic hose complying with this International Standard are given in table I. 6.2, The dimensions of end fittings and the lengths of hoses are shown in figure 1 and given in table 2. The external shape of the end fitting may be polygonal or with notches for a sector wrench. Table 1 - Di
31、mensions and performance of flexible metallic hose in explosive atmospheres Dimensions in millimetres Nominal sirell DN 15 20 25 32 2) 40 50 65 2) 80 1 O0 Minimum internal diameter 14 18 23 29 37 48 60 75 95 1) See IS0 6708. 2) DN with limited amication Maximum value of minimum dynamic bend radius 2
32、70 280 31 O 320 400 500 600 7 50 900 Maximum value of minimum static bend radius 50 70 90 110 130 175 200 240 300 7 Inspection and testing 7.1 General The hose assemblies shall be subjected by the manufacturer to the inspections and tests specified in 7.2 to 7.4 (see also annex 8). 7.2 Dimensional i
33、nspection All hose assemblies shall comply with the require ments of tables 1 and 2. 7.3 Visual examination All hose assemblies shall comply with the require- ments of 8.3. 7.4 Hydraulic test Each hose assembly shall be subjected to a hydraulic test under a minimum pressure of 40 bar with a nonagres
34、sive fluid for a period of at least 60 c. There shall be no leakage. After testing, the hose shall be cleaned and dried Page 4 EN IS0 10807:1996 400 - - XXX xxx xxx - - Nominal size DN 425 xxx xxx - - - - - 15 20 25 32 3) 40 50 65 3) 80 1 O0 I- 7 Rina 1 i/- 1 I- H i 1 End fitting Figure 1 Table 2 -
35、Dimensions of end fittings and hose lengths Dimensions in millimetres Thread) R 112 R 314 R1 R 1 114 R 1 1/2 R2 R2 112 R3 R4 300 Total hose lengths2) 600 4 700 800 SOO 1) In accordance with IS0 7-1. 2) The overall length of a flexible hose is the length ordered with a tolerance of ?: %. 3) DN with l
36、imited amlication. 1 O00 1 200 - - - XXX XXX XXX XXX - A rnax. 34 40 50 68 82 120 145 - i 1 130 Page 5 EN IS0 10807:1996 8 Technical delivery conditions 8.1 Types of delivery Corrugated flexible metallic hose assemblies comply- ing with this International Standard are delivered ready-fitted with two
37、 fixed male end fittings. 8.2 Surface protection Stainless steel end fittings are not protected; non- alloyed steel fittings are galvanized or painted with a zinc-epoxy primer. 8.3 Finish The internal surfaces of the hose and fittings shall be free from burrs and sharp edges likely to damage the ele
38、ctric cable. 8.4 Thread In accordance with IS0 7-1 9 Marking 9.1 The corrugated flexible metallic hose assem- blies shall be marked indelibly on one of the end fit- tings, on one of the two rings or on a nondetachable metal collar. The marking shall include the following information: - manufacturers
39、 name or factory mark; - reference to this International Standard; - the last two figures of the year of production; - the class of location (see A.2). EXAMPLE 9.2 By agreement between the parties at the time of ordering, other marking conditions may be speci- fied (see B.4). 10 Designation and orde
40、ring 10.1 Required information A corrugated flexible metallic hose assembly comply- ing with this International Standard shall be desig- nated and/or ordered by following information, in the sequence given: a) the group of five letters: TMFAE (Flexible Metallic Hose in Explosive Atmospheres); b) ref
41、erence to this International Standard; c) nominal size (see table 1); d) total length, i., in millimetres (see table 2); e) nature of the materials used (see clause 5); f) EXAMPLE class of location (see A.2). Designation of a corrugated flexible metallic hose as- sembly of nominal size DN 40 and len
42、gth 800 mm, of austenitic stainless steel used in a class B location: TMFAE IS0 10807 DN40 - 800 - stainless steel -B 10.2 Optional information The order for Corrugated metallic hose complying with this International Standard may also contain a request by the purchaser for: - a special type of marki
43、ng (see 9.2); XV - IS0 10807 - 94 - B - documentation in accordance with IS0 404. Page 6 EN IS0 10807:1996 Annex A (normative) Instructions for use A.1 Scope This annex provides some helpful instructions on the use of corrugated flexible metallic hose for the pro- tection of electrical cables in fla
44、me-resistant instal- lations, regarding the local atmosphere and the choice of materials in relation to the conditions of use. A.2 Classification of locations The local atmosphere in which the corrugated flexible metallic hose is to be used can be categorized into one of the three classes given in A
45、.2.1 to A.2.3. A.2.1 Class A: Closed or covered locations such as industrial premises, sheds protected from atmos- pheric or corrosive agents (sea air, slightly acid at- mosphere, etc.). A.2.2 Class B: Closed or open locations exposed to corrosive agents (.e. close to the sea, acid atmos- phere, etc
46、.). A.2.3 Class C: Any other location containing highly corrosive atmospheres. Corrosive agents are all those likely to corrode the materials of the corrugated flexible metallic hose as- semblies specified in this International Standard and their components: fittings, welding or brazing filler mater
47、ials, sleeves, braiding and hose. EXAMPLES An atmosphere in which ammonia is present is in- compatible with all copper alloys. An atmosphere in which hydrochloric acid is present is incompatible with most stainless steels. In this case, subsequent protection of the hoses should be provided. A.3 Choi
48、ce of materials Materials shall be chosen according to the class of location, as shown below: - for class A, the materials described in clause 5; - for class B, the materials described in 5.1 b), 5.2 b), 5.3 b) and 5.4; - for class C, the steels of type 19, 20 and 21 in accordance with IS0 683-12 an
49、d welding in ac- cordance with 5.4 b). Page 7 EN IS0 10807:1996 Annex B (normative) Type approval testing B.1 Scope This annex specifies the tests required by officially approved agencies for the type approval of corrugated metallic hose for the protection of electrical cables in flameproof installations. B.2 Tests 8.2.1 General Each type of hose shall successfully undergo the tests described in 8.2.2 and B.2.3. These tests are carried out on hoses assembled in accordance with figure 1 and table2, taking four sam- ples per diameter, the minimum length
