【正文】 )RUHZRUG 7KH WH[W RI GRFXPHQW $ )39。 7amp。 SDUDOOHO YRWH DQG ZDV DSSURYHG E\ amp。 BBBBBBBBBB (QGRUVHPHQW QRWLFH 7KH WH[W RI WKH ,QWHUQDWLRQDO 6WDQGDUG ,(amp。 BSI 072020 CONTENTS Page INTRODUCTION .................................................................................................................... 4 Clause 1 Scope and object ............................................................................................................. 5 2 Normative references ....................................................................................................... 6 3 Definitions.................................................................................................................. ...... 6 4 General........................................................................................................................... . 7 5 Test levels ....................................................................................................................... 7 6 Test generator ................................................................................................................. 9 Characteristics and performances of the generator .................................................. 9 Verification of the characteristics of the generator ..................................................10 7 Test setup .....................................................................................................................11 8 Test procedure............................................................................................................... .11 Laboratory reference conditions .............................................................................12 Execution of the test ..............................................................................................12 9 Evaluation of test results .................................................................................................13 10 Test report ................................................................................................................. .....13 Annex A (informative) Example of test generators and test setup .........................................15 Annex B (normative) Inrush current measurement.................................................................17 Annex ZA (normative) Normative references to international publications with their corresponding European publications ..............................................................................19 Figure – Example of test generator based on two power sources with internal switching ...16 Figure – Example of test generator based on a programmable power supply ....................16 Figure – Circuit for measuring the peak inrush current drive capability of a test generator ..................................................................................................................... .........18 Figure – Circuit for measuring the peak inrush current of an EUT .....................................18 Table 1a – Preferred test levels and durations for voltage dips ................................................ 8 Table 1b – Preferred test levels and durations for short interruptions ...................................... 8 Table 1c – Preferred test levels and durations for voltage variations ....................................... 8 Page 4 EN 61000?4?29:2020 169。 – the test setup。 this particular phenomenon is not covered by this standard. Voltage interruptions are primarily caused by the switching of mechanical relays when changing from one source to another (. from generator set to battery). During a short interruption, the . supply work may present either a high impedance or low impedance condition. The first condition can be due to switching from one source to another。 – 40 % and 70 %, corresponding to 60 % and 30 % dips。 BSI 072020 6 Test generator The following features are mon to the generator for voltage dips, short interruptions and voltage variations, except where otherwise indicated. The generator shall have provisions to prevent the emission of disturbances which may influence the test results. Examples of generators are given in figure (test generator based on two power sources with internal switching) and figure (test generator based on a programmable power supply). Characteristics and performances of the generator The test generator shall be able to operate in continuous mode with the following main specifications: – – Output voltage range (Uo): Short interruptions, dips, and variations of the up to 360 V output voltage: as given in tables 1a, 1b and 1c – Output voltage variation with the load (0 to rated current): less than 5 % – Ripple content: less than 1% of the output voltage – Rise and fall time of the voltage change, generator loaded with 100 resistive load: between 1 s and 50 s – Overshoot/undershoot of the output voltage, generator loaded with 100 resistive load: less than 10 % of the change in voltage – Output current (steady state) (Io): up to 25 A NOTE The slew rate of the voltage change at the output of the generator can range from a few V/ s up to hundreds V/ s, depending on the output voltage change. A test generator with Uo = 360 Vdc and Io = 25 A is remended to cover the great number of test requirements. In case of systems with rated power exceeding the generator capability, the tests shall be performed on individual modules/subsystems. The use of a generator with higher or lower voltage/current capability is allowed provided that the other specifications (output voltage variation with the load, rise and fal