Bsi bs en 50216 12 2011

BS EN 50216-12:2011 BSI Standards Publication Power transformer and reactor fittings Part 12: Fans NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW raising standards worldwide™ BRITISH STANDARD BS EN 50216-12:2011 National foreword This British Standard is the UK implementation of EN 50216-12:2011 The UK participation in its preparation was entrusted to Technical Committee PEL/14, Power transformers A list of organizations represented on this committee can be obtained on request to its secretary This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application © BSI 2011 ISBN 978 580 74724 ICS 29.180 Compliance with a British Standard cannot confer immunity from legal obligations This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2011 Amendments issued since publication Amd No Date Text affected BS EN 50216-12:2011 EUROPEAN STANDARD EN 50216-12 NORME EUROPÉENNE April 2011 EUROPÄISCHE NORM ICS 29.180 English version Power transformer and reactor fittings Part 12: Fans Accessoires pour transformateurs de puissance et bobines d'inductance Partie 12: Ventilateurs Zubehör für Transformatoren und Drosselspulen Teil 12: Ventilatoren This European Standard was approved by CENELEC on 2011-03-21 CENELEC members are bound to comply with 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 Secretariat 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 official versions CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels © 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members Ref No EN 50216-12:2011 E BS EN 50216-12:2011 EN 50216-12:2011 –2– Foreword This European Standard was prepared by the Technical Committee CENELEC TC 14, Power transformers The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50216-12 on 2011-03-21 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 latest date by which the national standards conflicting with the EN have to be withdrawn (dop) 2012-03-21 (dow) 2014-03-21 EN 50216-12 is to be read in conjunction with EN 50216-1, Power transformer and reactor fittings – Part 1: General _ –3– BS EN 50216-12:2011 EN 50216-12:2011 Contents 1 2 3 4 Scope .4 Normative references .4 Terms and definitions 5 Requirements 5 4.1 Rated values 5 4.2 Rated power and noise 6 4.3 Design of the drive 6 4.4 Design of the connection box 6 4.5 Design of the housing .6 4.6 Design of the fan wheel 6 4.7 Design of the protective grating / basket guard 6 4.8 Materials 7 4.9 Mechanical design 7 4.10 Surface protective coating 7 5 Identification 7 5.1 Specifications for the fan rating plate .7 5.2 Specifications for the motor rating plate 8 6 Tests 8 6.1 General 8 6.2 Routine tests 8 6.3 Type tests .8 7 Transport and storage 8 8 Installation and operation, operational performance 9 9 Technical documentation 9 Annex A (normative) Ordering designations .10 Annex B (informative) Performance of the fans 11 Annex C (informative) Design example 12 Bibliography 13 Figures Figure B.1 – Performance of the fans 11 Figure C.1 – Design example 12 BS EN 50216-12:2011 EN 50216-12:2011 –4– Scope EN 50216-12 deals with fans for oil-to-air coolers used for transformers as well as fans used for blowing out radiators Only fans operating axially are dealt with in this standard specification This standard specification defines the interchangeability and uniform fan assembly dimensions and requirements for ensuring fan 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) applies EN 22768-1 General tolerances – Part 1: Tolerances for linear and angular dimensions without individual tolerance indications (ISO 2768-1) EN 22768-2 General tolerances – Part 2: Geometrical tolerances for features without individual tolerance indications (ISO 2768-2) EN 50216-1:2002 Power transformer and reactor fittings – Part 1: General EN 50262 Cable glands for electrical installations EN 60034-1 Rotating electrical machines – Part 1: Rating and performance (IEC 60034-1) EN 60529 Degrees of protection provided by enclosures (IP Code) (IEC 60529) EN 60721-3-4 Classification of environmental conditions – Part 3: Classification of groups of environmental parameters and their severities – Section 4: Stationary use at non–weather protected locations (IEC 60721-3-4) EN ISO 3506-1 Mechanical properties of corrosion-resistant stainless steel fasteners – Part 1: Bolts, screws and studs (ISO 3506-1) EN ISO 5801 Industrial fans – Performance testing using standardized airways (ISO 5801) EN ISO 13857 Safety of machinery – Safety distances to prevent hazard zones being reached by upper and lower limbs (ISO 13857) ISO 10816-1 Mechanical vibration – Evaluation of machine vibration by measurements on non-rotating parts – Part 1: General guidelines ISO 13347-1 Industrial fans – Determination of fan sound power levels under standardized laboratory conditions – Part 1: General overview ISO 13347-3 Industrial fans – Determination of fan sound power levels under standardized laboratory conditions – Part 3: Enveloping surface methods ISO 14694 Industrial fans – Specifications for balance quality and vibration levels –5– BS EN 50216-12:2011 EN 50216-12:2011 Terms and definitions For the purposes of this document, the following terms and definitions apply 3.1 drive depending on the specification the motor used to drive the fan wheel can be either a three-phase a.c motor, an a.c motor or a d.c motor The motor is mounted rigidly in the housing 3.2 connection box the electrical connection between the external power supply (and control system if this exists) and the internal connection is made in the terminal box The terminal board is located in the connection box 3.3 housing the housing is used for attaching the fan to the radiator or cooler; the housing also supports the motor In addition the protective grating and / or basket guard is / are attached to it 3.4 fan wheel the fan wheel is mounted rigidly on the motor axle / rotor 3.5 protective grating / basket guard the protective grating or basket guard is used to prevent accidental contact with the rotating parts Furthermore, the protective grating or basket guard also prevents large foreign bodies from coming into contact with the parts Requirements 4.1 Rated values The following designations are used: -f [Hz] = frequency; - Ur [V] = rated voltage; -I [A] = operating current during free blowing; - Ir [A] = rated current of the motor; - P1 [W] = active-power input during free blowing; -η [%] = overall efficiency of the fan; -N [1/min] = - qV [m /s] = volume flow of the fan during free blowing; - psF [Pa] maximum static pressure which the fan can produce, in producing static pressure volume flow is reduced; - LWA [dB(A)] = A-weighted sound power level of a fan during free blowing; -D [mm] diameter of the fan wheel = = rotational speed; NOTE The characteristic curve should be delivered by the supplier (psF = f(qV)) The noise is dependent on the working point and the installation conditions BS EN 50216-12:2011 EN 50216-12:2011 4.2 –6– Rated power and noise The values for air power and noise apply when protective gratings are fitted The volume flow refers to an air density = 1,20 kg/m³ at a temperature of t = 20 °C and an air pressure of 101,325 kPa (this corresponds to a site altitude below 000 m) They are to be measured at rated voltage with the associated frequency provided that no other operating data has been specified in the order 4.3 Design of the drive The motor shall comply with EN 60034-1 and suitable for unprotected outdoor installation The provided degree of protection is to be at least IP54 or above as per the order specification in accordance with EN 60529 Thermal class 155 as per EN 60034-1 applies to all motors Condensation water and any other intrusive water shall be able to run off without any damaging effect This applies to both horizontal and vertical mounting of the fan (blowing upwards) The bearings of the motor shall be made in such a way that they are able to guarantee a trouble- and maintenance-free running time (continuous operation) of at least years (at least years for four-pole operation) or rather as agreed upon The connecting lead between the winding space of the motor and the cable compartment of the terminal box can be run on both the inside and the outside 4.4 Design of the connection box The connection box (if present) shall be mounted in such a way that it is easily accessible The connection box is to provide protection to at least IP54 as per EN 60529 Condensation water in the connection box shall not affect operation or lead to any damage Each of the terminals shall be suitable for holding down two 2,5 mm² leads at I < 1,5 A At I > 1,5 A each terminal shall be suitable for holding down two mm² leads The earthing screw in the connection box shall be easily accessible Captive screws shall be used for the cover of the connection box Screwed cable glands (at least 2) as per EN 50262 made from nickel-plated brass are to be used for the connecting lead inlet The cover seal shall be secured using suitable measures so that overpressing or slipping is prevented at all times 4.5 Design of the housing As a rule the housing is cylindrical The motor with fan wheel (chosen by the manufacturer) is mounted on to the housing The fixing points of the fan are likewise located on the housing If a connection box is mounted on the outside of the housing then the connection cables are to be suitably fixed The direction of air flow (in connection with the rotational direction) is to be indicated on the housing using a durable marking (can also be combined with the rating plate) 4.6 Design of the fan wheel The fan wheel shall be designed in such a way that no water is able to gather This applies to both horizontal and vertical mounting of the fan (blowing upwards) 4.7 Design of the protective grating / basket guard Fans for radiator cooling systems are to be fitted with protective gratings (inlet and discharge sides), fans for oil-to-air coolers are to be fitted with protective grating (either inlet or discharge side) The opening widths of the protective gratings on both the inlet and discharge sides are to provide protection as per EN ISO 13857 The protective grating or the basket guard is to be rigidly mounted on the housing –7– 4.8 BS EN 50216-12:2011 EN 50216-12:2011 Materials Fan housing: Chosen by manufacturer Fan wheel: Aluminium with high quality coating or plastic, e.g PP10.20 VT.- black with approximately 25 % solid body content (glass) Connection box: Cast iron, steel or aluminium with high quality coating Protective grating / basket guard: Inlet side: steel or stainless steel; Discharge side: steel with coating or galvanized Terminal board or terminal block: Insulating material ceramic or equivalent material or plastic material Motor housing: Chosen by manufacturer Threaded bolts, washers, nuts for electrical connections: Made from material which is not dangerous on contact and which is non-corrosive Screws, washers, nuts, except for electrical connections: Stainless steel, e.g A2-70 in accordance with EN ISO 3506-1 Strain washers: Non-rusting spring steel Other materials are to be agreed upon 4.9 Mechanical design — To prevent rusting underneath the surface all external components shall be welded completely without breaks — The vibration severity determined at the outer perimeter of the fan housing in accordance with ISO 14694 (BV - 3) or ISO 10816-1 (class zone B) — Tolerances as per EN 22768-1 and EN 22768-2 4.10 Surface protective coating The buyer and manufacturer are to agree upon the corrosion protection treatment and coating At the same time the necessary environmental conditions are to be observed The environmental conditions shall correspond to EN 60721-3-4 Identification 5.1 Specifications for the fan rating plate — The fans shall have a clearly visible all-weather rating plate displaying the ratings for 50 Hz and/or 60 Hz operation — Type designation and serial number of the manufacturer and year of manufacture • volume flow in m³/s during free blowing, • rotational speed in during free blowing, -1 BS EN 50216-12:2011 EN 50216-12:2011 –8– • active-power input in W during free blowing, • rated current consumption at rated voltage given in A — It shall be evident from the rating plate whether or not there is an internal, thermal circuit breaker present, which will disconnect the current in the event of a fault — A direction arrow indicating the direction of air-flow (in connection with the rotational direction) shall either be attached to the rating plate or mounted in its immediate vicinity (see 4.6) 5.2 Specifications for the motor rating plate Motor rating plate according to EN 60034-1 A separate rating plate for the motor shall be attached to the fan housing if this is specified in the order The data of fan and motor shall not be identical Tests 6.1 General The tests are to be carried out at the fully assembled fan (with protective grating) Performance measurements (volume flow, static pressure, active-power input and rotational speed) are to be carried out in accordance with EN ISO 5801 Noise measurements are carried out according to ISO 13347-3 Terms, quantities, measuring instruments as per ISO 13347-1 Test object: fan (total noise during free suction and free blowing) The buyer and manufacturer are to agree upon special tests e.g frequency analysis NOTE 6.2 The sound power level of transformer is measured according to EN 60076-10 Routine tests — Active-power input; — Rotational speed; — Current 6.3 Type tests — Characteristic curve (psF = f(qV)); — Noise measurement Transport and storage The fan is to be delivered in assembled condition ready for mounting Fans shall be dispatched in such a way that no damage and contamination can occur The fan shall also be suitable for outdoor storage without having to take a certain position into account NOTE In principle the instruction of the supplier should be taken into account –9– BS EN 50216-12:2011 EN 50216-12:2011 Installation and operation, operational performance All of the fan properties given in this European Standard – above all the volume flow and noise level – assume that there is no disturbance to the air flow as a result of mounting or installation Ambient temperature range: -25 °C to +40 °C Other ambient temperatures are to be specified in the order Technical documentation Minimum documentation extent: — manual; — data sheet; — test records; — characteristic curve Other documentation is to be specified in the order BS EN 50216-12:2011 EN 50216-12:2011 – 10 – Annex A (normative) Ordering designations A.1 Minimal ordering designations -f [Hz] = frequency - Ur [V] = rated voltage - character of current phase / phase - qV [m /s] = volume flow of the fan during free blowing - psF [Pa] = maximum static pressure which the fan can produce, in producing static pressure volume flow is reduced - LWA [dB(A)] = A-weighted sound power level of a fan during free blowing -D [mm] = diameter of the fan wheel - fixing points - protective grating with execution - mounting (vertical or horizontal) - air flow direction - corrosion protection treatment and coating A.2 Additional specifications (if necessary) - protection: IPXX - ambient temperature range - altitude on site - internal thermal circuit breaker - reserve data - adjustable angle of fan wheel – 11 – BS EN 50216-12:2011 EN 50216-12:2011 Annex B (informative) Performance of the fans psF (Pa) Angle of fan wheel qV (m³/s) P1 (kW) qV (m³/s) CAUTION: In general a change to the volume flow will result in a change to the sound power level Figure B.1 – Performance of the fans BS EN 50216-12:2011 EN 50216-12:2011 – 12 – Annex C (informative) Design example 300 Hole Rating plate Protective grating Rating plate in view max 600 Protective grating Air flow direction Figure C.1 – Design example – 13 – BS EN 50216-12:2011 EN 50216-12:2011 Bibliography EN 50216-6 Power transformer and reactor fittings – Part 6: Cooling equipment – Removable radiators for oil-immersed transformers EN 50216-10 Power transformer and reactor fittings – Part 10: Oil-to-air heat exchangers EN 60076–1 Power transformers – Part 1: General (IEC 60076-1) EN 60076-10 Power transformers – Part 10: Determination of sound levels (IEC 60076-10) EN 10204 Metallic products – Types of inspection documents EN ISO 2409 Paints and varnishes – Cross-cut test (ISO 2409) EN ISO 3506 series Mechanical properties of corrosion-resistant stainless-steel fasteners (ISO 3506 series) EN ISO 4042 Fasteners – Electroplated coatings (ISO 4042) ISO 13348 Industrial fans – Tolerances, methods of conversion and technical data presentation DIN 24166 Fans; technical delivery conditions DIN 45635-1 Measurement of noise emitted by machines; airborne noise emission; enveloping surface method; basic method, divided into grades of accuracy This page deliberately left blank This page deliberately left blank British Standards Institution (BSI) BSI is the independent national body responsible for preparing British Standards and other standards-related publications, information and services It presents the UK view on standards in Europe and at the international level It is incorporated by Royal Charter Revisions Information on standards British Standards are updated by amendment or revision Users of British Standards should make sure that they possess the latest amendments or editions It is the 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