IEC 61047 pdf download DC or AC supplied electronic step-down convertors for filament lamps – Performance requirements
This International Standard specifies performance requirements for electronic step-downconvertors for use on d.c. supplies up to 250 v and a.c. supplies up to 1 0o0 v at 50 Hz or60 Hz with operating frequencies deviating from the supply frequency,associated withtungsten halogen lamps as specified in lEC 60357 and other filament lamps.
NOTE 1The tests in this standard are type tests.Requirements for testing individual convertors during productionare not included.
NOTE 2 Requirements for convertors which incorporate means for varying the lamp power are underconsideration.
NOTE 3 lt 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 ratedvoltage less than 50 v.
NOTE 4There exist regional standards regarding the regulation of mains current harmonics for end-productssuch 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.
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 editionof 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. suppliedelectronic step-down convertors for filament lamps
3Terms and definitions
For the purposes of this document the following terms and definitions apply.
total circuit power
the total power dissipated by convertor and lamp(s) in combination, at rated supply voltage ofthe convertor and at the highest rated output load
circuit power factor
the ratio of measured circuit power to the product of the supply voltage (r.m.s.) and the supplycurrent (r.m.s.)
high power factor convertor
a convertor having a circuit power factor of at least 0,85
NOTE1 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.
high audio-frequency impedance convertor
a convertor the impedance of which in the frequency range 250 Hz to 2 000 Hz exceeds thevalues specified in Clause 11
short-circuit proof convertor
a convertor which remains capable of functioning after an incidental overload or short circuitis removed and after restoration of a protecting device, if any
4General 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 samplesubmitted by the manufacturer for that purpose. Iin principle this type test sample should consist of units havingcharacteristics typical of the manufacturer’s production and be as close to the production centre point values aspossible.