SIST EN 13135-1:2004

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Krane - Sicherheit - Konstruktion - Anforderungen an die Ausrüstungen - Teil 1: Elektrotechnische AusrüstungenAppareils de levage a charge suspendue - Sécurité - Conception - Prescriptions pour l'équipement - Partie 1: Equipement électrotechniqueCranes - Safety - Design - Requirements for equipment - Part 1: Electrotechnical equipment53.020.20DvigalaCranesICS:Ta slovenski standard je istoveten z:EN 13135-1:2003SIST EN 13135-1:2004en01-junij-2004SIST EN 13135-1:2004SLOVENSKI
STANDARD



SIST EN 13135-1:2004



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13135-1December 2003ICS 53.020.20English versionCranes - Safety - Design - Requirements for equipment - Part 1:Electrotechnical equipmentAppareils de levage à charge suspendue - Sécurité -Conception - Prescriptions pour l'équipement - Partie 1:Equipement électrotechniqueKrane - Sicherheit - Konstruktion - Anforderungen an dieAusrüstungen - Teil 1: Elektrotechnische AusrüstungenThis European Standard was approved by CEN on 1 September 2003.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13135-1:2003 ESIST EN 13135-1:2004



EN 13135-1:2003 (E)2ContentsForeword.3Introduction.41Scope.42Normative references.53Terms and definitions.54List of significant hazards.75Safety requirements and/or safety measures.95.1General.95.2Control circuits and control functions.95.3Electrical requirements for the installation of load handling devices.95.4Electric motors.95.5Limiting and indicating devices.115.6Lightning protection.115.7Temperature.115.8Explosion hazard.115.9Functional safety of software.116Verification of the safety requirements and/or measures.117Information for use.127.1General.127.2Marking, warning signs and reference designations.127.3Technical documentation.12Annex A (informative)
Selection of a suitable set of crane standards for a given application.13Annex B (normative)
Copy of FEM 1.001 Booklet 5, clause 5.8.14Annex C (informative)
Application of the EMC-Directive 89/336/EEC to Cranes.29Annex ZA (informative)
Relationship of this document with EC Directives.30Bibliography.31SIST EN 13135-1:2004



EN 13135-1:2003 (E)3ForewordThis document EN 13135-1:2003 has been prepared by Technical Committee CEN/TC 147 “Cranes - Safety”, thesecretariat of which is held by BSI.This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by June 2004, and conflicting national standards shall be withdrawn at the latest byJune 2004.This document has been prepared under a mandate given to CEN by the European Commission and the EuropeanFree Trade Association and supports essential requirements of EC Directive(s).For relationship with EC Directives, see informative annex ZA, which is an integral part of this document.To select a suitable set of cranes standards for a given application see annex A.NOTESome of the standards listed are in preparation.Annexes A and C are informative. Annex B is normative.This document includes a Bibliography.This European Standard is one Part of EN 13135. The other part is as follows:Part 2: Non-Electrotechnical equipment.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,Slovakia, Spain, Sweden, Switzerland and the United Kingdom.SIST EN 13135-1:2004



EN 13135-1:2003 (E)4IntroductionThis document is a harmonised European Standard to provide one means for electrotechnical equipment of cranesto conform with the essential health and safety requirements of the Machinery Directive 98/37/EC.NOTE 1For the selection of motors, reference has been made to 5.8 of FEM 1.001 Booklet 5. For the convenience of thereader this has been reproduced as annex B.NOTE 2As far as possible reference has been made to the relevant CEN and CENELEC standards, in particular, to EN60204-32.This European Standard is a type C standard as stated in EN 1070.The machinery concerned and the extent to which hazards, hazardous situations and events are covered areindicated in the scope of this document.When provisions of this type C standard are different from those which are stated in a type B standard, theprovisions of this type C standard take precedence over the provisions of other standards, for machines that havebeen designed and built according to the provisions of this type C standard.1 ScopeThis European Standard specifies requirements for the design and selection of low voltage electrotechnicalequipment for all type of cranes, with the objectives of ensuring reliability of safety-related function and protectingpersonnel from hazards affecting their health and safety.NOTESpecific requirements for particular types of cranes, and for load lifting attachments, are given in the appropriateEuropean standard.The equipment covered by this European Standard commences at the point of connection of the supply to theelectrical equipment of the crane including systems for power supply and control feeders situated outside thecrane, e.g. flexible cables, conductor wires or bars, cableless controls.The standard does not cover individual items of electrical equipment except with regard to their selection forspecific aspects of use.The significant hazards covered by this European Standard are identified in clause 4.This standard doesn't deal with voltages over 1000 V a.c. and 1500 V d.c.This standard does not cover hazards related to the lifting of persons.This document is not applicable to cranes which are manufactured before the date of publication by CEN of thisdocument.Authors of Product-Specific-Standards should copy the relevant clauses of this standard instead of referring toEN 13135, and should refer directly to EN 60204-32 whenever possible.SIST EN 13135-1:2004



EN 13135-1:2003 (E)52 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN 292-2:1991, Safety of machinery – Basic concepts, general principles for design – Part 2: Technical principlesand specifications.EN 1050:1996, Safety of machinery – Principles for risk assessment.EN 1070, Safety of machinery – Terminology.EN 12077-2, Cranes safety – Requirements for health and safety – Part 2: Limiting and indicating devices.EN 12644-1, Cranes – Information for use and testing – Part 1: Instructions.EN 13155, Cranes - Safety - Non-fixed load lifting attachments.EN 50014, Electrical apparatus for potentially explosive atmospheres – General requirements.EN 50019, Electrical apparatus for potentially explosive atmospheres – Increased safety "e".EN 50020, Electrical apparatus for potentially explosive atmospheres - Intrinsic safety "i".EN 60204-32:1998, Safety of machinery - Electrical equipment of machines – Part 32: Requirements for hoistingmachines (IEC 60204-32:1998).IEC 60034-1:1999, Rotating electrical machines - Part 1: Rating and performance.IEC 60034-5, Rotating electrical machines - Part 5: Degrees of protection provided by the integral design of rotatingelectrical machines (IP code); Classification.IEC 60050-826, International Electrotechnical Vocabulary – Chapter 826: Electrical installations of buildings.3 Terms and definitionsFor the purposes of this European Standard, the terms and definitions given in EN 60204-32, IEC 60050-826 andEN 1070 apply (to be considered according this priority order). Additional terms and definitions specifically neededfor this document are added below :NOTEDefinitions are in alphabetical order for this language version only.3.1cranesmachines for cyclic lifting, or cyclic lifting and handling, of loads suspended on hooks or other load liftingattachments, whether manufactured to an individual design, in series, or from prefabricated componentsNOTE"Suspension" can include additional means fitted to prevent swinging, rotation of the load.3.2low-voltage electrotechnical equipmentelectrotechnical equipment operating with voltages not exceeding 1000 V a.c. or 1500 V d.c.SIST EN 13135-1:2004



EN 13135-1:2003 (E)63.3rated speedspeed corresponding to the rating of the motor usedNOTEFor variable speed drives the following also applies:Maximum speed of the motor at which it is still able to supply its rated torque.3.4maximum permissible operating speedmaximum motor speed during operation between the rated speed and the mechanical limit speedNOTEFor variable speed drives the motor torque can also be reduced.3.5mechanical limit speed of the motorspeed above which the motor can be damaged3.6rated torque of the motor (Mn)torque to which the motor may be loaded without its thermal limit exceeded when used according to its specifiedutilisation (see annex B)3.7breakdown torque (of an a.c. motor)maximum value of the steady-state asynchronous torque which the motor develops without an abrupt drop inspeed, when the motor is supplied at the rated voltage and frequency (IEC 60034-1:1999, 2.15)NOTEIn case of variable frequency drives, the breakdown torque can be defined in a similar manner for each combinationof voltage and frequency.SIST EN 13135-1:2004



EN 13135-1:2003 (E)74 List of significant hazardsTable 1 contains all the significant hazards, hazardous situations and events, as far as they are dealt with in thisstandard, identified by risk assessment as significant for this type of machinery and which require action toeliminate or reduce the risk.Table 1 — List of significant hazards and associated requirementsNOTEHazards numbering follows EN 1050:1996, annex A.Relevant clause(s) inN° inTable A1ofEN1050:1996HazardEN 60204-32:1998and/or this standard1Mechanical hazards due to:1.c)Mass and stability (potential energy of elementswhich may move under the effect of gravity)5.51.d)Mass and velocity (kinetic energy of elementsin controlled or uncontrolled motion)5.51.6Impact hazard5.52Electrical hazards due to:2.1Contact of persons with live parts (directcontact)6.22.2Contact of persons with parts which havebecome live under faulty conditions (indirectcontact)6.32.5Thermal radiation or other phenomena such asthe projection of molten particles and chemicaleffects from short circuits, overloads, etc.73Thermal hazards, resulting in:3.1Burns, scalds and other injuries by a possiblecontact of persons with objects or materialswith an extreme high or low temperature, byflames or explosions and also by the radiationof heat sources5.85Hazards generated by vibration4.4.87Hazards generated by materials andsubstances (and their constituent materials)processed or used by the machinery7.2Fire or explosion hazard5.88Hazards generated by neglecting ergonomicprinciples in machinery design as e.g.hazards from:8.6Human error, human behaviour5, 9.2, 10 and 1210Unexpected start-up, unexpectedoverrun/overspeed (or any similarmalfunction) from:10.1Failure/disorder of the control system5.2SIST EN 13135-1:2004



EN 13135-1:2003 (E)8Relevant clause(s) inN° inTable A1ofEN1050:1996HazardEN 60204-32:1998and/or this standard10.2Restoration of energy supply after aninterruption9.2.5.4 and 10.7.310.3External influences on electrical equipment4.4 and 1110.5Errors in the software5.910.6Errors made by the operator (due to mismatchof machinery with human characteristics andabilities, see 8.6)5, 9.2, 10 and 125.510.7Overspeed7.6 and 9.2.5.55.4.2 and 5.510.8Overtravel9.2.5.5, 9.3.2 and10.1.45.4.2 and 5.511Impossibility of stopping the machine in thebest possible conditions9.2 and 9.413Failure of the power supply7.514Failure of the control circuit5.2,20Relating to the travelling function20.6Insufficient ability of machinery to be sloweddown, stopped and immobilised9.2.5.4 and 10.75.522Due to the control system22.1Inadequate location of manual controls1022.2Inadequate design of the manual controls andtheir mode of operation1025From/to third persons25.1Unauthorised start-up/use5.626Insufficient instructions for thedriver/operator727Mechanical hazards and hazardous events27.1From load falls, collisions, machine tippingcaused by :27.1.2Uncontrolled loading - overloading - overturningmoments exceeded5.527.1.3Uncontrolled amplitude of movements5.527.1.4Unexpected/unintended movement of loads5.427.1.5Inadequate holding devices/accessories5.328Electrical hazards:28.1From lightning5.6SIST EN 13135-1:2004



EN 13135-1:2003 (E)95 Safety requirements and/or safety measures5.1 GeneralThe safety requirements of EN 60204-32 identified in Table 1 shall apply with the following extensions.5.2 Control circuits and control functionsThe provisions of clause 9 and 11 of EN 60204-32:1998 shall apply.With regard to 9.2.2 of EN 60204-32:1998, certain control systems (e.g. for converters) may have a short timedelay before the power supply is removed, for ensuring that no additional hazard occurs.5.3 Electrical requirements for the installation of load lifting attachments5.3.1 GeneralThe relevant provisions of EN 13155 shall apply.NOTEThe load lifting attachment is the same as load holding device in EN 60204-32.5.3.2 Selection and installation of wiring systemsThe provision of clauses 13 and 14 of EN 60204-32:1998 shall apply.Electric cables to load lifting attachments shall be installed and protected in such a way that damage is avoidedduring normal operation.5.3.3 Battery systemsBattery-supplied load handling magnets and load handling magnets with back up batteries shall be equipped withan automatic warning device indicating clearly before a dangerous situation occurs as a result of the batterybecoming exhausted.5.4 Electric motors5.4.1 GeneralMotors shall be selected in accordance with annex B where applicable.Depending on the type of use the motor falls in one of the dyty classes S1, S2 or S3 as defined in IEC 60034-1.Otherwise (e.g. for single phase motor), the relevant calculation methods shall be used.5.4.2 Mechanical limit speed, maximum permissible operating speed for hoisting and luffing motorsA motor for hoisting or luffing and its over speed protection shall be selected so that the mechanical limit speed willnot be reached within the foreseeable braking delay in the event of power loss. A motor for variable speed driveshall be selected so that the mechanical limit speed will not be reached in case of switching off by an over speedprotection during lowering with maximum speed and load or in case of converter malfunction.For three-phase slipring motors the mechanical limit speed shall correspond to the values in Table 2 (at 50 Hz) :SIST EN 13135-1:2004



EN 13135-1:2003 (E)10Table 2 — Limit speeds for three-phase slipring motorsSynchronous speed1/min300015001000750600Mechanical limit speed, at least1/min45003000200015001200Recommended mechanical limit speed1/min2500187515005.4.3 Torque for hoisting and luffing motorsThe maximum torque of the motor shall be sufficient to fulfil the operating requirements and prevent the fall of theload.Breakdown torque for three-phase slipring motors with contactor control relative to the rated hoist motor torque Mnat S3 40 % duty shall reach the values given in Table 3:Table 3 — Breakdown torque for three-phase slipring motors with contractor controlFrame size and speedHoist motor breakdowntorque at S3 40 % dutyFor frame sizes 100 to 160 at 3000,1500 and 1000 1/minat least 2,2 ´ MnFor frame sizes 180 to 225 at 1000and 750 1/minat least 2,2 ´ MnFor frame sizes 250 to 400 at 6001/minat least 2,2 ´ MnFor all other frame sizes and speedsat least 2,5 ´ Mn5.4.4 A.C motors5.4.4.1 GeneralHoist shall incorporate features so that:a) the load cannot move back in an uncontrolled manner if a phase fails;b) the load cannot drop if a phase fails.5.4.4.2 Slipring motorsIn case of significant risks due to uncontrolled lowering, the crane equipment shall comprise :a) either devices that prevent start-up of the load or stop movement immediately as soon as the possible cause ofuncontrolled lowering has been discovered;b) or devices that stop the crane movement before the lowering speed reaches the mechanical limit speed inaccordance with the requirements in 5.4.2.See also provisions of 7.6 and 9.5 of EN 60204-32:1998.NOTEAn uncontrolled lowering of the load is possible for example under the following conditions:SIST EN 13135-1:2004



EN 13135-1:2003 (E)11a) Intentional or unintentional operation with a reverse current characteristic not matched to the load to be lowered;b)Operation of the motor with an open rotor or unintentional interruption of the rotor circuit in which case the power supply isnot interrupted immediately and automatically and therefore the brakes are not applied.5.5 Limiting and indicating devicesThe following requirements shall apply in addition to those stated in EN 12077-2.Limiters shall fulfil the requirements of 10.1.4 of EN 60204-32:1998.After operation of a limiter, it shall be ensured that the contacts do not assume their original position until thecorresponding restricted area has been left.For indicating devices the provisions of 10.3 of EN 60204-32:1998 shall apply.5.6 Lightning protectionIf this protection is required, e.g. for high cranes (e.g. tower cranes) or cranes with particular risk, a suitableprotective system shall be installed on the crane.NOTE 1For this protective system it should be checked if there is a National rule.NOTE 2Effects caused by the lightning strike should be taken into account:a) in parts that can be damaged and therefore present a hazard (e.g. jib carrying rope);b) in rolling bearings that carry the major parts of the supporting structure, e.g. slewing bearing, travelling wheels and their bearings;c) in the electrical wiring. See 7.9 of EN 60204-32:1998.NOTE 3For more information see IEC 61024 Parts 1, 1-1 and 1-2.Outdoor cranes tracks shall be earthen according to the local conditions.5.7 TemperatureThe provisions of 4.4.3 of EN 60204-32:1998 shall apply unless otherwise specified between the user and thesupplier.NOTEBeyond the temperature range given in 4.4.3 of EN 60204-32:1998 (0 - 40 °C), also outdoor-cranes can need awider temperature range, such as -20 °C to 55 °C.5.8 Explosion hazardIf cranes are intended to be used in potentially explosive areas, the relevant electrical equipment shall meet therequirements of EN 50014 and EN 50019 unless otherwise specified.5.9 Functional safety of softwareThe provisions of 9.5 of EN 60204-32:1998 shall apply.Additionally the relevant parts of IEC 61508 should be taken into consideration.6 Verification of the safety requirements and/or measuresThe verifications of the safety requirements and/or measures are specified in clause 19 of EN 60204-32:1998, andin EN 12644-1.SIST EN 13135-1:2004



EN 13135-1:2003 (E)12The following tests according to clause 19 of EN 60204-32:1998 have to be done on every single crane :¾ continuity of the protective bonding circuit ;¾ functional tests related to safety and safeguarding.7 Information for use7.1 GeneralAll information for use shall be in accordance with clause 5 of EN 292-2:1991, and with EN 12644-1. An instructionhandbook shall be provided, in accordance with 5.5 of EN 292-2:1991.Information shall be provided on the following :¾ protection of electrical devices when arc welding is carried out on the crane ;¾ actions to be taken when overload testing the crane ;¾ prevention of excessive paint from being applied to critical areas, for example limit switch, drain hole, etc ;¾ the climatic and other environment conditions ;¾ vibrations ;¾ explosion hazard, if applicable ;¾ precaution to be taken if the load can be released in case of power loss or emergency operation.7.2 Marking, warning signs and reference designationsThe provisions of clause 17 of EN 60204-32:1998 shall apply.7.3 Technical documentationThe provisions of clause 18 of EN 60204-32:1998 shall apply.SIST EN 13135-1:2004



EN 13135-1:2003 (E)13Annex A(informative)Selection of a suitable set of crane standards for a given applicationIs there a product standard in the following list that suits the application?prEN 13000Cranes - Mobile cranesprEN 14439Cranes - Tower cranesWI 00147031Cranes - Slewing jib cranesWI 00147032Cranes - Bridge and gantry cranesprEN 13852-1Cranes - Offshore cranes - Part 1: General purpose offshore cranesprEN 13852-2Cranes - Offshore cranes - Part 2: Floating cranesEN 12999Cranes - Loader cranesprEN 13157Cranes – Safety - Hand powered cranesEN 13155Cranes – Safety - Non-fixed load lifting attachmentsprEN 14238Cranes - Manually controlled load manipulating devicesYESUse it directly, plus the standards that are referred toNOWI 00147005Cranes - TerminologyprEN 13001-1Cranes - General design - Part 1: General principles and requirementsprEN 13001-2Cranes - General design - Part 2: Load effectsprCEN/TS 13001-3-1Cranes - General design - Part 3-1: Limit states and proof of competence of steel structuresprCEN/TS 13001-3-2Cranes - General design - Part 3-2: Limit states and proof of competence of rope reevingcomponentsprCEN/TS 13001-3-3Cranes - General design - Part 3-3: Limit states and proof of competence of wheel/rail contactsprCEN/TS
13001-3-4Cranes - General design - Part 3.4: Limit states and proof of competence of machineryEN 13135-1Cranes - Safety - Design - Requirements for equipment - Part 1: Electrotechnical equipmentprEN 13135-2Cranes - Equipment - Part 2: Non-electrotechnical equipmentEN 13557Cranes - Controls and control stationsEN 12077-2Cranes safety – Requirements for health and safety – Part 2: Limiting and indicating devicesprEN 13586Cranes - AccessprEN 14502-1Cranes - Equipment for the lifting of persons - Part 1: Suspended basketsprEN 14502-2Cranes - Equipment for the lifting of persons - Part 2: Elevating control stationsprEN 14502-3Cranes - Equipment for the lifting of persons - Part 3: Spreader beamsEN 12644-1Cranes - Information for use and testing - Part 1: InstructionsEN 12644-2Cranes - Information for use and testing - Part 2: MarkingprEN 12644-3Cranes - Information for use and testing - Part 3: Fitness for purposeSIST EN 13135-1:2004



EN 13135-1:2003 (E)14Annex B(normative)Selection of motorsIntroductory note by CEN/TC 147For the convenience of the reader, this annex reproduces with permission of FEM subclause 5.8 (pages 5.18 to5.30) of FEM 1.001 Booklet 5 "Rules for the design of hoisting appliances – Booklet 5: Electrical equipment" (3rdedition 1998-10-01 - Rev 1992-10-01) except for the clause numbering, figure numbering and pagenumbering which have been changed to suit this annex and some modifications to meet the CEN rules.Introductory note to Booklet 5Subclause 5.8 (Annex B) "SELECTION OF MOTORS" was rewritten in order to allow crane manufacturers todesign motors, as precisely as possible.Subclause 5.8 (Annex B) is divided into 3 parts:1st part (B.1.1): General determinations for the selection of motors and dimensioning of motors according tothermal aspects, usually applying on all sorts of drives in intermittent service.In this part, item B.1.1.4 "SQUIRREL-CAGE MOTOR" includes a method to calculate, suitable for asynchronoussquirrel cage motor. This method, given on a trial basis, has to be tested.2nd part (B.1.2): Special determinations to dimension motors according to the maximum torque required toLIFTING motions and according to data on stress occurring during the use of these drives.3rd part (B.1.3): As in 2nd part, but this item applies on motors for HORIZONTAL motions.B.1 Selection of motorsB.1.1 Criteria for motor selection (IEC 60034-1)¾ required powers - the thermal power is also included in these required powers;¾ maximum rated torque and maximum acceleration torque;¾ cyclic duration factor;¾ number of cycles/hour;¾ type of control (type of braking);}
driving systems¾ speed regulation;}
driving systems¾ type of power feed;}
driving systems¾ degree of protection, (environments conditions);}¾ ambient temperature;¾ altitude.For the pre-dimensioning of the motor, account has to be taken of:SIST EN 13135-1:2004



EN 13135-1:2003 (E)15¾ the thermal calculation as per subclause B.1.1.3;¾ the maximum required torque:¾ for hoisting mechanisms as per subclause B.1.2.1;¾ for horizontal motions as per subclause B.1.3.1.The motor has to comply with the two requirements.If the required torque diagrams, in order to define the mean equivalent torque (as per B.1.1.3.1) are not available,these can be assessed respectively with the help of Tables B.1 and B.2.B.1.1.1 Remarks on the selection of motorsThe selection of the motor should be agreed with the manufacturer in taking into account the torque and powerscalculated in the following clauses and the real operating conditions of the motor.In the event of electronic power control, the definition of the motors has to be made in co-operation with themanufacturer, taking into account the cooling system and the speed range.B.1.1.2 Degree of protection (according to IEC 60034-5)B.1.1.2.1 Indoor applicationFor indoor application under normal conditions, motors shall comply with IP 23 at least.In dusty environment, motors shall comply with IP 44 at least.B.1.1.2.2 Outdoor applicationFor outdoor application, motors shall comply with IP 54 at least.In case of water condensation risk, care should be taken that the water condensation drain holes remain open.B.1.1.2.3 Particular applicationMotors may comply with a lower degree of protection if the
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