1、BRITISH STANDARD BS EN 50350:2004 Charging control systems for household electric room heating of the storage type Methods for measuring performance The European Standard EN 50350:2004 has the status of a British Standard ICS 97.100.10 BS EN 50350:2004 This British Standard was published under the a
2、uthority of the Standards Policy and Strategy Committee on 30 July 2004 BSI 30 July 2004 ISBN 0 580 44173 3 National foreword This British Standard is the official English language version of EN 50350:2004. The UK participation in its preparation was entrusted by Technical Committee CPL/59, Performa
3、nce of household electric appliances, to Subcommittee CPL/59/3, Heating appliances (Room and water), which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement internati
4、onal or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport
5、to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee an
6、y enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 27 and a
7、 back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 50350 NORME EUROPENNE EUROPISCHE NORM July 2004 CENELEC European Committee for Electrotechnical Standardization
8、 Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50350:2004 E ICS 97.
9、100.10 English version Charging control systems for household electric room heating of the storage type Methods for measuring performance Systmes de commande de charge des appareils de chauffage accumulation usage domestique - Mthodes de mesure de laptitude la fonction Aufladesteuerungen fr elektris
10、che Speicherheizungen fr den Hausgebrauch - Verfahren zur Messung der Gebrauchseigenschaften This European Standard was approved by CENELEC on 2004-04-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard th
11、e 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, Ge
12、rman). 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, Cyprus
13、, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 50350:2004 2 Foreword This European Standard was
14、prepared by the CENELEC BTWG 70-1, Charging controls for storage heating appliances. The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50350 on 2004-04-01. The following dates were fixed: - latest date by which the EN has to be implemented at national level by
15、publication of an identical national standard or by endorsement (dop) 2005-04-01 - latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2007-04-01 _ 3 EN 50350:2004 Contents 1 Scope .4 2 Normative references .4 3 Definitions.4 4 Classification 6 5 List of me
16、asurements .7 6 General conditions for measurements .9 7 Marking and instruction 10 8 Specification of variables for the outside sensor11 9 Central control unit (C.C.U.).12 10 Group control unit (G.C.U.) for types A, B and C.17 11 Charge controller17 12 Performance of the charging control system of
17、types A, B and C .19 13 Performance of charging control systems of type D 20 Annex A (informative) Information to be given by the manufacturer26 Annex B (normative) Example of the test condition scheme for charging control systems of type D27 Figure 1 Combined action of components of a charging cont
18、rol system with/without an outside sensor9 Figure 2 X eW 14 Figure 3 Instantaneous allowed heat content X eWas a function of the outside sensors input variable X eFand the running time T 14 Figure 4 Characteristic curves of thermal storage room heaters .18 Figure 5 Set characteristics of charge cont
19、roller for floor storage heating.19 Figure 6 Temperature curve as a function of time .23 Table 1 Functional requirements for terminals.11 Table 2 Ohmic values for a resistive sensor 12 Table 3 Charging rate X aWas a function of T, weather value X eFand setting variables 15 Table 4 Requirements of th
20、e characteristic curve adjusters 16 EN 50350:2004 4 1 Scope This standard applies to charging control systems for household electric room heating (systems) of the storage type with internal energy source (resistors). The object of this standard is to list and define, for the information of the users
21、, the main performance characteristics of the charging control systems and to describe standard methods for verifying these characteristics and to improve quality. This standard does not deal with safety requirements. 2 Normative references The following referenced documents are indispensable for th
22、e 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 60531 Household electric thermal storage room heaters Methods for measuring performance (IEC 60531, modif
23、ied) 3 Definitions For the purposes of this document, the following terms and definitions apply. 3.1 charging control system system which consists of control and adjustment elements for the charging of storage heating units (e.g. storage heaters) A charging control system regulates the heat content
24、of a storage heating unit within an allowed charging period as a function of the climatic conditions. The assembly of all the components required to carry out this task is called charging control system. The individual components can have one or several functions and can consist of several elements
25、3.2 outside sensor component which measures the outside climatic conditions (e.g. temperature) and transmits the measured value as an information to other components of the charging control 3.3 central control unit component which transmits command settings to other components as a function of infor
26、mation received from sensors and as a function of the daily charge program 3.4 timer component which determines the start time and end time of a charge within an allowed charge period 3.5 group control unit component which amplifies the command setting of the central controller and facilitates the m
27、atching of individual heat requirements 5 EN 50350:2004 3.6 charge controller the charge controller of a storage heating unit (e.g. storage heater) is a component which controls the charge as a function of the heat content and the command setting of the central controller or the group controller. Th
28、is enables each storage heating unit to be matched to the heat requirements of the individual rooms 3.7 characteristic curve adjuster adjustable element of a component of a charging control system which enables to modify the characteristic curve of an output signal 3.7.1 accessible to the service en
29、gineer only a characteristic curve adjuster is considered to be accessible only to the service engineer if the characteristic curve adjuster requires tools for setting 3.7.2 accessible to the user a characteristic curve adjuster is considered to be accessible to the user if the characteristic curve
30、adjuster can be freely set and the setting read on a scale in case of normal installation conditions of the charging control system 3.8 charge period period during which the storage heater is enabled to convert electrical power into heat in order to store it in the accumulating core 3.8.1 supply cha
31、rge period longest period (in hours) of uninterrupted electrical supply to the heater NOTE The length of this period is set and shall be published by the utility. 3.8.2 additional supply charge period any period of uninterrupted electrical supply to the heater, additional to the supply charge period
32、 NOTE The length and sequence of these periods are set and shall be published by the utility. 3.8.3 supplementary charge period (T zf in hours) sum of additional supply charge periods in a daily charge program 3.8.4 daily charge program sequence of charge periods (supply and additional supply period
33、s) over a 24 h cycle, beginning with the supply charge period 3.9 load characteristic property of a charging control system which determines the switching-on behaviour of storage heating units within the daily charge program. The changeover from the main load characteristic to the supplementary load
34、 characteristic occurs at time T 4EN 50350:2004 6 3.9.1 forward charging takes place when the charge switches on at the start of the supply charge period and instant of switching- off is set by the climatic conditions and the heat content of the storage heating units 3.9.2 backward charging takes pl
35、ace when instant of switching the charge on is set by the climatic conditions and by the heat content of the storage heating units and instant of switching-off is given by the end of the supply charge period 3.9.3 spread charging modified form of backward charging. The instant of switching-on and sw
36、itching-off are set by the climatic conditions, the heat content of the storage heating units and a time function 4 Classification 4.1 According to the time function Central control unit with timer. Central control unit without timers. 4.2 According to the location of the charge controller Located i
37、n the storage heater. Located outside the storage heater. 4.3 According to the specification of variables Type A: AC voltage - power based signal. Type B: DC voltage. Type C: AC voltage - digitised signal. Type D: AC voltage - binary signal. 7 EN 50350:2004 5 List of measurements 5.1 Symbols, units
38、and abbreviations used List of symbols, units and abbreviations for the charging control system for storage heaters Symbol Unit Designation E1 - Characteristic curve adjuster for full charging E2 - Characteristic curve adjuster for start of charge E3 - Characteristic curve adjuster for elapsed time
39、at which the optimal charge is theoretically reached E4 - Characteristic curve adjuster for the minimum charge base E5 - Global characteristic curve adjuster for a group control unit E6 - Characteristic curve adjuster for maximum heat content limiter E7 - Global characteristic curve adjuster for cha
40、rging within the main load characteristic (floor storage heating) E8 - Global characteristic curve adjuster for charging within the supplementary load characteristic (floor storage heating) E10 - Characteristic curve adjuster for the supplementary load characteristic E11 - Length of the period durin
41、g which, if an interruption of the supply charge period appears, the timer of charge controller is stopped up to the end of this interruption E12 - End point of the main load characteristic i.e. switching over point to the supplementary charging characteristic E13 - Length of the cycle during which
42、the clock of the charge control system is running E14 - Characteristic curve adjuster for the total charging period limiter (floor storage heating) E15 - Characteristic curve adjuster for the level of charge allowed by E2 E16 - Additional curve adjuster for restriction of supplementary load characte
43、ristic depending on the adjustment of E1 X E1 C Setting point for E1 X E2 C Setting point for E2 X E3 h Setting point for E3 X E4 % Setting point for E4 X E5 % Setting point for E5 X E6 % Setting point for E6 X E7 % Setting point for E7 X E8 % Setting point for E8 X E10 % Setting point for E10 X E11
44、 h Setting point for E11 X E12 h Setting point for E12 X E13 h Setting point for E13 X E14 h Setting point for E14 (floor storage heating) X E15 % Setting point for E15 X E16 0/1 Setting point for E16 T f h Length of supply charge period EN 50350:2004 8 Symbol Unit Designation T zf h Length of suppl
45、ementary charge period T h Elapsed time since the beginning of the last supply charge (running time) T 0 h Starting point of the load-characteristic T 1 h Length of the period during which, if an interruption of the supply charge period appears, the timer of charge controller is stopped up to the en
46、d of this interruption T 3 h Elapsed time at which the optimal charge is theoretically reached T 4 h End point of the main load characteristic i.e. switching over point to the supplementary charging characteristic T 5 h The end of the cycle during which the clock of the charge control system is runn
47、ing T off s Length of period switched-off T on s Length of period switched-on n Number of switched-on supply periods within T (control cycle) n max Maximum number of supply periods within T (control cycle) U V Supply voltage I A Value of electric current P N kW Rated input of storage heating unit O
48、a C Outside temperature O u C Ambient temperature X eF C Input value of outside sensor X aF * Output variable of outside sensor X uF * Output variable of ambient temperature sensor X e1 * Input variable of central control unit for outside condition X e2 * Input variable for running control of the ti
49、mer in accordance with the tariff-situation X e3 % Input variable of group control unit X e4 % Input variable of charge controller X e5 % Input variable of heat content measurement of an appliance X a1 % Output variable of central control unit X a3 % Output variable of group control unit X a4 - Binary output control signal to switch the charge X aW % Output variable of heat content measurement of an appliance X eW
