EN 50340:2001

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.NWULþQLKHydraulische Kabelschneidgeräte - Geräte zur Verwendung an elektrischen Anlagen mit Nennwechselspannungen bis 30 kVDispositifs coupe câbles hydrauliques - Dispositifs à utiliser sur des installations électriques de tension nominale jusqu'à 30 kV en courant alternatifHydraulic cable cutting devices - Devices to be used on electrical installations with nominal voltage up to AC 30 kV13.260Protection against electric shock. Live workingICS:Ta slovenski standard je istoveten z:EN 50340:2001SIST EN 50340:2002en01-september-2002SIST EN 50340:2002SLOVENSKI
STANDARD
EUROPEAN STANDARDEN 50340NORME EUROPÉENNEEUROPÄISCHE NORMOctober 2001CENELECEuropean Committee for Electrotechnical StandardizationComité Européen de Normalisation ElectrotechniqueEuropäisches Komitee für Elektrotechnische NormungCentral Secretariat: rue de Stassart 35, B - 1050 Brussels© 2001 CENELEC -All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.Ref. No. EN 50340:2001 EICS 13.260; 29.240.20; 29.260.99English versionHydraulic cable cutting devices -Devices to be used on electrical installationswith nominal voltage up to AC 30 kVDispositifs coupe câbles hydrauliques -Dispositifs à utiliser sur des installationsélectriques de tension nominale jusqu'à30 kV en courant alternatifHydraulische Kabelschneidgeräte -Geräte zur Verwendung an elektrischenAnlagen mit Nennwechselspannungenbis 30 kVThis European Standard was approved by CENELEC on 2000-08-01. CENELEC members are bound tocomply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving thisEuropean Standard the status of a national standard without any alteration.Up-to-date lists and bibliographical references concerning such national standards may be obtained onapplication to the Central Secretariat or to any CENELEC member.This European Standard exists in three official versions (English, French, German). A version in anyother language made by translation under the responsibility of a CENELEC member into its ownlanguage and notified to the Central Secretariat has the same status as the official versions.CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands,Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.SIST EN 50340:2002

- 3 - EN 50340:2001AnnexesAnnex A (normative)
Instructions for use .24Annex B (normative)
List of tests .26Annex C (normative)
Sampling plan .27Annex D (informative)
Acceptance tests .29Annex E (informative)
Background .30FiguresFigure 1 - Example of cable cutting device .18Figure 2 - Symbol “Double triangle“ .18Figure 3 - Test arrangement for measuring the leakage current .19Figure 4 - Tackle points to strain the blade (blades) .20Figure 5 - Working force of the pump - test arrangement .21Figure 6 - Slip resistance - test arrangement .22Figure 7 - Earthing system - test arrangement .23SIST EN 50340:2002

- 5 - EN 50340:20011ScopeThis standard is applicable to cable cutting devices to be used to verify that a cable is dead inaccordance with the rules given in EN 50110.Cable cutting devices specified in this standard are for use on systems with nominal voltage up to30 kV AC and nominal frequencies up to 60 Hz.For devices to be used on systems with nominal voltages above 30 kV AC this standard should beused as a guide but additional requirements and tests shall be agreed between manufacturer andcustomer to provide for an equivalent level of safety.These devices are not designed to be used on cables with special armour, or with steel wires orsteel tapes more than 1 mm in diameter or thickness.2Normative referencesThis European Standard incorporates by dated or undated reference, provisions from otherpublications. These normative references are cited at the appropriate places in the text and thepublications are listed hereafter. For dated references, subsequent amendments to or revisions ofany of these publications apply to this European Standard only when incorporated in it byamendment or revision. For undated references the latest edition of the publication referred toapplies (including amendments).EN 12164+ A119982000Copper and copper alloys material - Rod for free machiningpurposesEN 501101996Operation of electrical installations.EN 60060–21994Part 2 : Measuring systems (IEC 60060-2:1994)EN 601561995Insulating liquids - Determination of the breakdown voltage atpower frequency - Test method (IEC 60156:1995)EN 612301995Live working : Portable equipment for earthing or earthing andshort-circuiting (IEC 61230:1993, mod.)HD 437 S11984Standard conditions for use prior and during the testing ofsolid electrical insulating materials (IEC 60212:1971)HD 588.1 S11991High-voltage test techniques - Part 1 : General definitions andtest requirements (IEC 60060-1:1989)IEC 60050-1511978International Electrotechnical Vocabulary – Chapter 151 :Electrical and magnetic devices.IEC 60050-6041987International Electrotechnical Vocabulary – Chapter 604 :Generation, transmission and distribution of electricity –OperationIEC 604101973Sampling plans and procedures for inspection by attributes.IEC 613181994Live working - Guidelines for quality assurance plans.ISO 14021994Rubber and plastic hoses and hose assemblies - HydrostatictestingSIST EN 50340:2002

- 7 - EN 50340:20013.6reverse flow valvea valve for manual operation which is designed and installed for the backflow of fluid from thepressure compartment to the storage compartment after having cut through the cable completely.3.7safety valvea valve designed and installed to release the pressure of fluid in the pressure compartment whenthe maximum operating pressure of the hydraulic system is reached, so that it protects the systemagainst overpressure.3.8hydraulic couplera fitting on the pump, the cutting head and at each end of the hose to permit connection of thesecomponents. The fitting is made in two mating parts. The coupler can be connected anddisconnected only under negligible pressure. The coupler shall be fluid tight and maintainconnection under the maximum operating pressure condition of the cable cutting device.NOTE
Some couplers can be separated by hand, others may require the use of a tool.3.9maximum operating pressurethe operating pressure specified by the manufacturer which shall not be exceeded during thefunctioning of the cable cutting device.3.10blade(s)metallic part(s) with a sharp edge or edges which is designed to penetrate the cable in such a waythat the cable will be cut into two separate parts.3.11earthing systemall those necessary connections, conductors and fittings used to ensure that the electricalpotential of an equipment is as close as practicable to the earth potential (i.e. at or about 0 V toearth) [IEV 604-04-02 Mod].3.12Tests3.12.1type testa test performed of one or more devices made to a certain design to show that the design meetscertain specifications [IEV 151-04-15].3.12.2routine testa test to which each individual device is subjected during or after manufacture to ascertainwhether it complies with certain criteria [IEV 151-04-16].SIST EN 50340:2002

- 9 - EN 50340:20014.2.9The cutting head(s) shall be compatible with the pump as specified by the manufacturer ofthe pump.4.3Insulating hose4.3.1These hoses shall provide the required electric insulation between the operator and thecable even when the cutting head blade(s) reach(es) the highest nominal voltage at powerfrequency and also under condition of pollution of the outer surface.4.3.2The complete length of the insulating hose shall be made of insulating material. It shall beflexible.4.3.3The insulating hose shall be a single piece and be not less than 5 m long. Moreover, theeffective length shall be in accordance with the recommendations for use as mentioned inannex A.The elongation of the hose when measured at the maximum operating pressure shall be less than5% of the original length.4.3.4The insulating hose and couplings shall withstand the following pressure tests :- an overpressure test of 2 times the maximum operating pressure,- a burst-pressure test of 4 times the maximum operating pressure,- 60 000 pulses at the maximum pulse pressure of 1,33 times the maximum operating pressureand with hydraulic fluid temperature of 100°C.4.4Insulating hydraulic fluidThe insulating hydraulic fluid shall withstand a test voltage of at least 10 kV.4.5Pump4.5.1The pump shall be fitted with a safety valve, a reverse flow valve and a pressure gauge toindicate the operating pressure.4.5.2To ensure that the pump does not move during pumping, the part of the pump in contactwith the ground shall be designed to provide sufficient slip resistance during operation.4.5.3The pump shall be suitable for operation by foot, by hand or by power driven operation.4.5.4Any means provided to adjust the maximum operating pressure shall only be accessiblevia a cover/plate, or enclosure which needs a special tool for removal.4.5.5The pressure level at which the safety valve shall function shall be reached with no morethan 50 strokes of the pump operating mechanism and no more than one minute in the case ofpower driven pumps.SIST EN 50340:2002

These covers and caps should be made captive to their individual parts of the couplers, so they are not lost.4.10Equipotential bonding and earthing systemThe cable cutting device shall be usable according to the two following methods (4-10-1 and4-10-2). So the cable cutting device shall be equipped with identified fittings where the earthinglinks will be connected (see ANNEX A).4.10.1Bonding shall be made between the pump and the earth (ground) by means of an earthingcable having a minimum cross section area of not less than 16 mm2 and a length no greater than1 m.4.10.2The cutting head shall be earthed. The earthing cable shall meet the requirements ofEN 61230.SIST EN 50340:2002

- 11 - EN 50340:20014.11Marking4.11.1Marking shall be legible and durable.4.11.2The following marking shall appear on the cable cutting device.4.11.2.1Cutting head-mark of origin (name or trademark of the manufacturer),-year of manufacture,-type,-number of production or serial number,-maximum operating pressure,-maximum cable diameter,-double triangle symbol (see Figure 2 ).4.11.2.2Insulating hose The marking specified shall appear along the length of the hose and the interval between the endof a mark and the beginning of the next identical mark shall not be greater than 500 mm.- mark of origin (name or trademark of the manufacturer),-year of manufacture- type,-nominal diameter,-year of manufacture.4.11.2.3Hydraulic couplerThe marking specified may be placed on the coupler parts or adjacent to the coupler parts. Ifmarking is placed on the hydraulic hose it shall be clearly distinguished from the marking of4.11.2.2.- mark of origin (name or trademark of manufacturer),- year and month of manufacture,- maximum operating pressure.- double triangle symbol (see Figure 2),4.11.2.4Pump- mark of origin (name or trademark of the manufacturer),- year of manufacture,- type,- number of production or serial number,- maximum operating pressure,- indication of the types of cutting head(s) to be used with the pump,- double triangle symbol (see Figure 2).SIST EN 50340:2002

4.1, 4.2, 4.3, 4.5, 4.7, 4.8, 4.9 and 4.10 shall be verified by visual orfunctional inspection and measurements.NOTE
Visual inspection means visual inspection by a person with normal or corrected vision without additionalmagnification.5.2.2 Instructions for useThe requirements of sub clause 4.12 shall be verified by examination of the instructions for use.5.2.3MarkingThe durability of the marking is verified by rubbing the marking for 15 s with a piece of lint-freecloth soaked into water and then rubbing it for further 15 s with a lint-free cl
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