1、Multi-purpose insulating sticksfor electrical operations on highvoltage installationsBS EN 50508:2009raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI British StandardsNational forewordThis British Standard is the UK implementation of EN 50508:2009.
2、The UK participation in its preparation was entrusted to Technical CommitteePEL/78, Tools for live working.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users ar
3、e responsible for its correct application. BSI 2009ISBN 978 0 580 58114 4ICS 13.260BRITISH STANDARDBS EN 50508:2009Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on
4、31 March 2009. Amendments issued since publicationAmd. No. Date Text affectedEUROPEAN STANDARD EN 50508 NORME EUROPENNE EUROPISCHE NORM February 2009 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnisc
5、he Normung Central Secretariat: avenue Marnix 17, B - 1000 Brussels 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50508:2009 E ICS 13.260 English version Multi-purpose insulating sticks for electrical operations on high vol
6、tage installations Perches isolantes usage multiple pour les oprations lectriques sur les installations haute tension Isolierende Mehrzweckstangen fr elektrische Bettigungen in Hochspannungsanlagen This European Standard was approved by CENELEC on 2008-10-21. CENELEC members are bound to comply with
7、 the CEN/CENELEC 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 the Central Secretaria
8、t or to any CENELEC 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 CENELEC member into its own language and notified to the Central Secretariat has the same status as the of
9、ficial versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portug
10、al, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 50508:2009EN 50508:2009 - 2 - Foreword This European Standard was prepared by the Technical Committee CENELEC TC 78, Equipment and tools for live working. The text of the draft was submitted to the formal vote
11、and was approved by CENELEC as EN 50508 on 2008-10-21. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2009-11-01 latest date by which the national standards conflicting with
12、the EN have to be withdrawn (dow) 2011-11-01 _ BS EN 50508:2009- 3 - EN 50508:2009 Contents Introduction . 5 1 Scope . 6 2 Normative references. 7 3 Terms and definitions 7 4 Requirements . 9 4.1 Materials . 9 4.2 Dimensions 9 4.3 Mechanical requirements .11 4.4 Electrical requirements 11 4.5 Markin
13、g 12 4.6 Instructions for use .13 5 Verification and testing13 5.1 General 13 5.2 Electrical test 14 5.3 Mechanical verifications and tests .16 5.4 Mechanical tests 17 6 Classification of defects 19 Annex A (normative) Instructions for use 25 Annex B (informative) Wet conditions test .26 Annex C (in
14、formative) Recommended sticks .28 Annex D (informative) Test tools for recommended heads 29 Annex E (normative) Marking: Information on the labels .33 Annex F (informative) Bending calculation 34 Annex G (normative) Test sequence 36 Annex H (informative) Classification of defects 37 Annex I (informa
15、tive) Periodic maintenance test .38 Bibliography 39 Figures Figure 1 Insulating stick with three sections (see Clause 3) 20 Figure 2 Length of sections (see 4.2.1 and 4.2.2) 21 Figure 3 Leakage current test (see 5.2.2) 21 Figure 4a Bridging test Test arrangement and dimensions of the V-shape bars (s
16、ee 5.2.3) . 22 Figure 4b Bridging test Connection of the V-shape bars (see 5.2.3) 22 Figure 4c Bridging test Initial stick position (see 5.2.3.1 and 5.2.3.2) . 23 Figure 5 Assembly for bending test (see 5.4.1) . 24 Figure 6 Assembly for torsion test (see 5.4.2) 24 Figure B.1 Arrangement of electrode
17、s . 27 Figure D.1 Test tool for universal type head First example. 29 Figure D.2 Test tool for universal type head Second example . 30 Figure D.3 Test tool for Bayonet type head 31 Figure D.4 Test tool for hexagonal 12 type head . 32 Figure I.1 Deflection calculated versus maximum deflection (see Ta
18、ble 5) . 35 BS EN 50508:2009EN 50508:2009 - 4 - Tables Table 1 Handle length 10 Table 2 Minimum length of insulating element . 12 Table 3 Dimensions for the concentric rings and band electrodes 14 Table 4 Distances d1between V-bars for the bridging test set-up . 15 Table 5 Maximum deflection 17 Tabl
19、e C.1 Dimensions of recommended sticks 28 Table F.1 Tube values 34 Table F.2 Arrangement . 34 Table G.1 Sequential order for performing tests 36 Table H.1 Classification of defects and associated requirements and routine tests 37 Table I.1 In-service testing . 38 BS EN 50508:2009- 5 - EN 50508:2009
20、Introduction Multipurpose insulating sticks are used to operate high voltage (more than 1 kV) live equipment at distance, such as opening and closing switchgear, extracting and replacing fuses, etc. They are also used to carry out operations prior to dead working, as in the case of voltage verificat
21、ion, earthing and short-circuiting, etc. In all these cases the stick has two main functions, to reach the part of the installation that needs to be operated on and to protect the worker from risk of electrical injury, by providing the insulation level and maintaining the safety distance between the
22、 worker and the live or potentially live installation. According to the working and maintenance procedures adopted, additional protection can be added in order to attain the adequate safety level (see Annex A). The multipurpose insulating stick is used in accordance with EN 50110. This standard has
23、been prepared in accordance with the requirements of EN 61477. BS EN 50508:2009EN 50508:2009 - 6 - 1 Scope This European Standard specifies the requirements and tests to be fulfilled by the multipurpose insulating sticks intended to perform a range of operations in high voltage installations by mean
24、s of the attached appropriate tools, for example: connection and disconnection of disconnectors or other equipment operated by the stick, fuse replacement with an attached tool, operations like: voltage absence verification, using a detector as a separate device in accordance with EN 61243-1; earthi
25、ng and short circuiting installations, using devices in accordance with EN 61230; placing insulating screens in order to provide protection against adjacent live parts; testing and measurement; any other operation or verification on the electrical installation, provided that the mechanical requireme
26、nts do not exceed those assured by the stick design and the worker shall remain at a safety distance; rescue of accident victims. This European Standard is applicable to the insulating sticks made of a single continuous tube or rod or multiple tube or rod sections connected to each other, to be used
27、 both indoors or outdoors on electrical systems for voltages of 1 kV to 765 kV a.c., frequencies of 50 Hz and/or 60 Hz and in the normal range of temperatures of -25 C to +55 C and at a relative humidity between 20 % and 93 %. For the purpose of this standard, “tube” is used for “tube” and “rod”. An
28、nex B includes considerations about the use under wet conditions. NOTE It is a general practice to use an insulating stick on d.c. installations with the same value of nominal voltage. That use shall comply with the national regulations. This European Standard is not applicable to sticks covered by
29、EN 60832, telescopic sticks covered by EN 62193, sticks with mobile internal or external operating rods, as those used directly for fuse replacement, single purpose sticks, especially designed to cover a single operation, generally as a complete equipment such as voltage detectors covered by EN 6124
30、3-1. NOTE Except where otherwise specified, all the voltages defined in this European Standard refer to values of phase-to-phase voltages of three-phase systems. In other systems, the applicable phase-to-phase or phase-to-earth (ground) voltages should be used to determine the operating voltage. BS
31、EN 50508:2009- 7 - EN 50508:2009 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) ap
32、plies. EN 60068-1 1994 Environmental testing Part 1: General and guidance (IEC 60068-1:1988 + corrigendum Oct. 1988 + A1:1992) EN 60068-2-32 1993 Basic environmental testing procedures Part 2: Tests - Test Ed: Free fall (IEC 60068-2-32:1975 + A2:1990) EN 60068-2-75 1997 Environmental testing Part 2-
33、75: Tests - Test Eh: Hammer tests (IEC 60068-2-75:1997) EN 60855 1996 Insulating foam-filled tubes and solid rods for live working (IEC 60855:1985, mod.) EN 61235 1995 Live working - Insulating hollow tubes for electrical purposes (IEC 61235:1993, mod.) EN 61477 Live working - Minimum requirements f
34、or the utilization of tools, devices and equipment (IEC 61477) HD 588.1 S1 1991 High-voltage test techniques Part 1: General definitions and test requirements (IEC 60060-1:1989 + corrigendum March 1990) IEC 60050 series International Electrotechnical Vocabulary (IEV) IEC 60417 Database Graphical sym
35、bols for use on equipment ISO 48 Rubber, vulcanized or thermoplastic - Determination of hardness (hardness between 10 IRHD and 100 IRHD) 3 Terms and definitions For the purpose of this document, the following terms and definitions apply. NOTE Further information on terminology is illustrated in Figu
36、re 1. 3.1 cap protection of the bottom of the stick 3.2 coupling (for multiple section sticks) element allowing the attachement of the sections of the stick 3.3 critical defect defect on product that judgement and experience indicate is likely to result in hazardous or unsafe conditions for individu
37、als using and depending on the product 3.4 hand guard physical guard or sign, visibly different, used to separate the handle from the insulating element BS EN 50508:2009EN 50508:2009 - 8 - 3.5 handle part of the stick between the edge of the hand guard and the bottom of the stick where the user shou
38、ld place his hands for correct use 3.6 head fixed element on the upper end of the stick that allows attaching tools such as operating hook, voltage detector, earthing devices, etc. 3.7 insulating element part of the stick between the hand guard and the limit mark that provides the user with the nece
39、ssary working distance and insulation related to the nominal voltage of the installation 3.8 limit mark differentiating element or sign that indicates to the user the physical limit until which he could insert the stick among live elements or touch them 3.9 major defect defect on product, other than
40、 critical, that is likely to result in failure, or to reduce significantly the functionality of the product 3.10 operation changes brought about to modify the electric state of an electric installation (connection or disconnection), but not entailing any assembly or dismantling of elements 3.11 mino
41、r defect defect on product that is not likely to reduce significantly the functionality of the product 3.12 multipurpose insulating stick insulating stick made with one or several adaptable sections of insulating tube, sized according to the nominal voltage and the working distance, with a head, ins
42、ulating element, hand guard, handle, cap, limit mark and couplings (for multiple sections sticks) (see Figure 1) 3.13 nominal voltage (Un) suitable approximate value of voltage used to identify a system IEV 601-01-21, modified 3.14 rated voltage (Ur) voltage value generally agreed upon by manufactur
43、er and customer to which certain operating specifications are referred NOTE The rated voltage of the stick is the value selected from Table 2, column 1, which should be the same as, either the nominal voltage (or the higher nominal voltage of a range of nominal voltages) or the following higher valu
44、e selected in this table. 3.15 routine test test performed on each item during or after manufacture to ascertain whether it complies with certain criteria IEV 151-16-17 BS EN 50508:2009- 9 - EN 50508:2009 3.16 safety distance (see 4.4.3) safety clearance between the worker and a live part of the ins
45、tallation related with the nominal voltage of the installation, provided by the length of the insulating element when the operating head is in contact with the voltage 3.17 type test test performed on one or more items representative of the production, made to show that the product meets certain con
46、ditions of its specification IEV 151-16-16, modified 4 Requirements 4.1 Materials Tubes and rods of insulating material used in the design of insulating sticks shall meet the requirements of EN 60855 or EN 61235. The cross-section of these tubes or rods may be circular or not, based on the physical
47、or ergonomic reasons applicable to the sticks. The head can be constructed of non-conductive or conductive material, even a metallic one. The insulating element may be made of one or more parts. Conductive elements outwardly insulated or not, between the limit mark and the hand guard are admitted if
48、 the minimum length of the insulating element (see Table 2) is kept. The limit mark shall be permanent and clearly recognisable by the user. The hand guard shall be an insulating disk with a higher diameter than the tube or a sign with the same characteristics as those of the limit mark, although it
49、 shall have a different colour than the limit mark. The band should have the inscription “hand limit” in national language. Sticks to be used under wet conditions can include additional non conductive elements as discs. 4.2 Dimensions 4.2.1 Length of the stick In order to meet the requirements of this European Standard and allow easy use by a single worker the following distances and combinations (see Annex C) are recommended: stick with a single
