IEC 61047-2004 pdf – DC or AC supplied electronic step-down convertors for filament lamps – Performance requirements.
1 Scope This International Standard specifies performance requirements for electronic step-down convertors for use on d.c. supplies up to 250 V and a.c. supplies up to 1 000 V at 50 Hz or 60 Hz with operating frequencies deviating from the supply frequency, associated with tungsten halogen lamps as specified in IEC 60357 and other filament lamps. NOTE 1 The tests in this standard are type tests. Requirements for testing individual convertors during production are not included. NOTE 2 Requirements for convertors which incorporate means for varying the lamp power are under consideration. NOTE 3 It may be expected that convertors complying with this standard will ensure satisfactory operation between 92 % and 106 % of rated supply voltage of filament lamps with rated lives greater than 200 h and rated voltage less than 50 V. NOTE 4 There exist regional standards regarding the regulation of mains current harmonics for end-products such as luminaires and independent control gear. In a luminaire, the control gear is dominant in this respect. Control gear, together with other components, should comply with these standards. 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) applies. IEC 60357, Tungsten halogen lamps (non-vehicle) – Performance specifications IEC 61347-1, Lamp controlgear – Part 1: General and safety requirements IEC 61347-2-2, Lamp controlgear – Part 2-2: Particular requirements for d.c. or a.c. supplied electronic step-down convertors for filament lamps 3 Terms and definitions For the purposes of this document the following terms and definitions apply. 3.1 total circuit power the total power dissipated by convertor and lamp(s) in combination, at rated supply voltage of the convertor and at the highest rated output load
3.2 circuit power factor λ λ the ratio of measured circuit power to the product of the supply voltage (r.m.s.) and the supply current (r.m.s.) 3.3 high power factor convertor a convertor having a circuit power factor of at least 0,85 NOTE 1 For North America a high power factor is defined as a power factor of at least 0,9. NOTE 2 The value of the power factor takes into account the effect of the distortion of the current waveform. 3.4 high audio-frequency impedance convertor a convertor the impedance of which in the frequency range 250 Hz to 2 000 Hz exceeds the values specified in Clause 11 3.5 short-circuit proof convertor a convertor which remains capable of functioning after an incidental overload or short circuit is removed and after restoration of a protecting device, if any 4 General notes on tests 4.1 The tests according to this standard are type tests. NOTE The requirements and tolerances permitted by this standard are based on testing of a type test sample submitted by the manufacturer for that purpose. In principle this type test sample should consist of units having characteristics typical of the manufacturer’s production and be as close to the production centre point values as possible. It may be expected with the tolerances given in the standard that products manufactured in accordance with the type test sample will comply with the standard for the majority of the production. Due to the production spread however, it is inevitable that there will sometimes be products outside the specified tolerances. For guidance of sampling plans and procedures for inspection by attributes, see IEC 60410.
4.7 All convertors covered by this standard shall comply with the requirements of IEC 61347-2-2 in conjunction with IEC 61347-1. 5 Classification 5.1 Classification according to the load a) Single value load convertors This type of convertor is designed for use with one specific output wattage only, which may be dissipated by one or more lamps. b) Multiple value load convertor This type of convertor is designed for use with one or more lamps with a total load within the declared wattage range. 5.2 Classification according to output voltage a) Convertors having a stabilized output voltage b) Convertors without a stabilized output voltage 6 Marking 6.1 Mandatory marking 6.1.1 Convertors shall be clearly marked as follows. a) Circuit power factor, e.g. λ = 0,9. If the power factor is less than 0,95 leading, it shall be followed by the letter “C”, e.g. λ = 0,9 C. b) If applicable, the symbol H which indicates that the convertor is not of the low distortion type. 6.1.2 In addition to the above mandatory marking, the following information shall either be given on the convertor or made available in the manufacturer’s catalogue or the like. a) If applicable, limits of the permissible temperature range. b) If applicable, an indication that the convertor has a stabilized output voltage. c) If applicable,. an indication that the convertor is suitable for operation with a mains supply dimmer. 6.2 Optional marking The following information may either be given on the convertor or made available in the manufacturer’s catalogue or the like.