bsen61000-4-29-2001电磁兼容性(emc)试验和测量技术直流输入功率口抗扰试验的电压扰动、短时中断和电压振动

bsen61000-4-29-2001电磁兼容性(emc)试验和测量技术直流输入功率口抗扰试验的电压扰动、短时中断和电压振动内容摘要：

port of electrical or electronic equipment. This standard is applicable to low voltage . power ports of equipment supplied by external . works. The object of this standard is to establish a mon and reproducible basis for testing electrical and electronic equipment when subjected to voltage dips, short interruptions or voltage variations on . input power ports. This standard defines: – the range of test levels。 – the test generator。 – the test setup。 – the test procedure. The test described hereinafter applies to electrical and electronic equipment and systems. It also applies to modules or subsystems whenever the EUT (equipment under test) rated power is greater than the test generator capacity specified in clause 6. The ripple at the . input power port is not included in the scope of this part of IEC 61000. It is covered by IEC 610004171) This standard does not specify the tests to be applied to particular apparatus or systems. Its main aim is to give a general basic reference to IEC product mittees. These product mittees (or users and manufacturers of equipment) remain responsible for the appropriate choice of the tests and the severity level to be applied to their equipment. ——————— 1 ) IEC 61000417, Electromagic patibility (EMC) – Part 417: Testing and measurement techniques – Ripple on . input power port immunity test Page 6 EN 61000−4−29:2020 169。 BSI 072020 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of IEC 61000. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of IEC 61000 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. IEC 60050(161), International Electrotechnical Vocabulary (IEV) – Chapter 161: Electro magic patibility IEC 61000411, Electromagic patibility (EMC) – Part 4: Testing and measuring techniques – Section 11: Voltage dips, short interruptions and voltage variations immunity tests 3 Definitions For the purposes of this part of IEC 61000 the definitions of IEC 60050(161) and the following definitions and terms apply. EUT equipment under test immunity (to a disturbance) the ability of a device, equipment or system to perform without degradation in the presence of an electromagic disturbance [IEV 1610120] voltage dip a sudden reduction of the voltage at a point in the low voltage . distribution system, followed by voltage recovery after a short period of time, from a few milliseconds up to a few seconds [IEV 1610810, modified] short interruption the disappearance of the supply voltage at a point of the low voltage . distributed system for a period of time typically not exceeding 1 min. In practice, a dip with amplitude at least 80 % of the rated voltage may be considered as an interruption. voltage variation a gradual change of the supply voltage to a higher or lower value than the rated voltage. The duration of the change can be short or long. malfunction the termination of the ability of an equipment to carry out intended functions, or the execution of unintended functions by the equipment. Page 7 EN 61000−4−29:2020 169。 BSI 072020 4 General The operation of electrical or electronic equipment may be affected by voltage dips, short interruptions or voltage variations of the power supply. Voltage dips and short interruptions are mainly caused by faults in the . distribution system, or by sudden large changes of load. Is also possible for two or more consecutive dips or interruptions to occur. Faults in the . distribution system may inject transient overvoltages into the distribution work。 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。 the second condition can be due to the clearing of an overload or fault condition on the supply bus. The latter can cause reverse current (negative peak inrush current) from the load. These phenomena are random in nature and can be characterised in terms of the deviation from the rated voltage, and duration. Voltage dips and short interruptions are not always abrupt. The primary cause of voltage variations is the discharging and recharging of battery systems。 however they are also created when there are significant changes to the load condition of the . work. 5 Test levels The rated voltage for the equipment (UT) shall be used, as a reference for the specification of the voltage test level. The following shall be applied for equipment with a rated voltage range: – if the voltage range does not exceed 20 % of its own lower limit, a single voltage from the range may be used as a basis for test level specification (UT)。 – in all other cases, the test procedure shall be applied for both the lower and upper limits of the rated voltage range. The following voltage test levels (in % UT) are used: – 0 %, corresponding to interruptions。 – 40 % and 70 %, correspon。