GB/Z 17625.6-2003 Electromagnetic compatibility limits for harmonic currents generated by equipment with a rated current greater than 16A in low-voltage power supply systems
Some standard content:
CB/Z17625.5-2003/IECTR 61000-3-4:1998 Foreword
This guiding technical document adopts IEC technical report 61000-34:1998*Electromagnetic compatibility Part 3: Limits Subpart 3: Limitation of harmonic currents generated by equipment with rated current greater than 1EA in low-voltage power supply systems 3. This guiding technical document is formulated to improve the compatibility of my country's electrical and electronic products and maintain a good electromagnetic environment: Improve the quality of power supply systems: This guideline refers to Part 6 of the technical document "Electromagnetic Compatibility Limits". The electromagnetic compatibility limits include the following: GB1762.1-2003 Electromagnetic Compatibility Limits Harmonic current emission limits (for each device with input current == 15A) GB17625.21999 Electromagnetic Compatibility Limits Limits on voltage fluctuations generated by equipment with rated current not exceeding 1riA in the low voltage power supply system GB/217635.3—70H! Limits on voltage fluctuations and internal currents of equipment with rated current not exceeding 1riA GB/Z 17625.4200 GB/Z 17626.6—2330 GB/Z 17625,6 --2U03
Restriction of harmonic current
Electromagnetic compatibility limit value for equipment with rated current greater than 16A in low-voltage power supply system, evaluation of electromagnetic compatibility limit value for passive load emission value in high-voltage power system, and evaluation of passive load emission value in high-voltage power system. The definition of harmonic current\ in this guidance technical document is based on G/T109.8 (IEC6100-7-2) and GB/Z18039.5 (IEC6190021). This guidance technical document is for reference only. Regarding the discussion and general opinions on this guidance technical document, the State Council standardization administrative department reflected that this guidance document should be submitted to the National Economic and Social Commission for Industry and Information Technology. This guidance technical document is under the jurisdiction of the National Technical Committee for Standardization of Power Supply (CSBTS/TC246). The drafting unit of this guidance technical document is the State Power Corporation or the Hanshang Voltage Research Institute. The main authors of this guidance technical document are Wang Ruo, Zhang Guangzhou, Wan Baoquan, Guo Xiong, Yang Jingmei, Zhang Wenliang, and Bo Hong. GB/Z17625.6—2G3/IEC TR61Q00-3-4:1998IEC Introduction
This part is part of the IEC 510(0) series of publications. The structure of this publication is as follows: Part 1: Overview
General topics (overview, basic principles) www.bzxz.net
Definitions, terminology
Part 2: Environment
Description of the environment
Classification of ring mills
Level of compatibility
Part 3: Functional values
Emission values
Resistance limits (when they do not fall within the scope of the product committee's declaration of conformity) Part 4: Testing and measurement techniques
Full text
Testing techniques
Part 5: Part 6: Installation and derating guidelines
Installation guidelines
Derating construction and installation
Part 7: Application standards
Part 1
Each part can be divided into several sub-parts, which should be used as international standards or technical reports. 1
1 Scope
GB/Z17625.6—2003/TECTK61000-3-4;1998 Electromagnetic compatibility limits
Limitations of harmonic currents generated by equipment with a rated current greater than 16A in a low-voltage power supply system. This guidance document covers harmonic current emissions. This guidance This technical document applies to electrical and electronic equipment connected to the public low-voltage AC power supply system with a rated input voltage of 5A per phase, and a nominal voltage of 240V or less, single-phase, two-wire or three-wire system, a nominal voltage of 500V or less, three-phase, three-wire or four-wire system, and a nominal frequency of 0.000V or less. Its distribution system is not included. The tests conducted in accordance with this guiding technical document are type tests for the entire equipment, such as a speed control unit, m. Small and no tests on its components, such as speed regulators. When such equipment is connected to the power supply system, it is usually necessary for the power supply department to reach an agreement with the user, and whether it is connected or not is determined by the actual situation. The power supply department may evaluate the harmonic disturbance level of the equipment according to the requirements of this guidance document, including the level of the disturbance caused by the equipment, and the actual situation of the connection with the power supply system. According to the harmonic disturbance of the equipment, it is determined whether to connect it to the power supply system:
This guidance document contains only the general provisions of the equipment and the equipment, and does not guarantee that the equipment meets the requirements of this article. In any case, it is not allowed to connect the equipment to the power supply system. In order to ensure the safety of the equipment and the grid load caused by the equipment, this guidance document is also applicable to the power supply department with special requirements for small rated current. 3. This guidance document is not applicable to active discharge devices. This guidance document stipulates that
a) The equipment is measured or the required short-circuit tolerance is met under the condition of the problem: h) Plastic test or simulation method.
2 Normative references
The following documents are used as the terms of this technical guideline document. For dated references, all subsequent revisions (excluding errata) and revised versions are not applicable to this technical guideline document. However, the parties who reach an agreement on the revision of this technical guideline document are encouraged to study whether the latest version of the document can be used. For references that are not dated, the latest version shall apply to this technical guideline document. G/T4355: Electrical.1 Electromagnetic compatibility (GB/T4365—2003, IEC 60050) (161), 155) GB17625.1 Compatibility limits for electromagnetic waves and electromagnetic emission limits (equipment current per phase ≤ 1A) (R17625.1—2003, IEC 6100C-3-2:2001,JDT)GB/T17625.Electromagnetic compatibility limit values for equipment with rated current greater than 16A4 Limitation of positive and negative fluctuations in low-voltage power supply systems ((:S/\17625.320CC.idtIEC6100F-3-5;1994)GT/T17626.7Electromagnetic compatibility test and performance test, power supply system and connected equipment will be measured for the measurement of the spectrum of the wave 1
GB/Y17625.6-20D3/IECTK 61000-3-4.1998Electromagnetic compatibility rules (G3/T17626.71998idtIEC61000-4-7:191)H115.3Methods of low-frequency conduction and signal transmission in public low-voltage power supply systems for fuel and fuel quality (GB/T 18039.3203.1EC 61000-2-2.1990,J1T)GT/7.1A05S.5Electricity protection for low voltage power supply system and signal transmission in the environment (GB/218039.520C3IECTR61000-2-1:1SSC) 3 Terms and definitions
This guideline adopts the following definitions and the definitions in GB/T135. 3.1
Total harmonic variation ratio ttalbarnonlcdistoronH) The ratio of the effective value of the harmonic (I. The ratio of the fundamental current to the effective value of the nth harmonic current. THD =
Partially weighted harmonic variation ratio (PW) The ratio of the effective value of a group of higher harmonics selected (starting from the 14th harmonic) to the effective value of the fundamental, using the spectrum to be excited,To add weights. Method: Use post points to add me this is confirmed, in order to also reduce the impact of the high-frequency power class, the health does not need to avoid each single European limit,
public connection point puimorcommoncoupllog (PCC) is the point closest to the user + and other users can also change or have been connected to the public power supply system, the user device conswmerstallatlom
at the power supply system connection point connected to the production side of all electrical equipment related to the user, including protection, control equipment machine conductors, single-phase equipment connected between the phase potential village neutral line section equipment. Phase interphesecywipment
connected between the two lines of equipment. Under normal operation, the neutral is not the carrier of the three-phase equipment. For three-phase equipment connected to three phase wires, under normal operation, the neutral is not the carrier of the three-phase equipment. The equipment connected with three phase wires and the neutral wire can be regarded as three external single-phase equipment. 37.1
Balanced three-phase equipment is connected to a constant source of power for a period of time and the frequency of the current in one line (the phase) is the same. The current in either phase is obtained at three points in the energy wave cycle. Under normal operating conditions, the neutral conductor does not act as a frequency conductor. 3.7.2
Unbalanced three-phase equipment is connected to a constant source of power for a period of time and the current in one line (the phase) is the same. The current in any phase is obtained at three points in the energy wave cycle. Under normal operating conditions, the neutral conductor does not act as a frequency conductor. 3.7.2
Unbalanced three-phase equipment is connected to a constant source of power for a period of time and the current in one line (the phase) is the same. Under normal operating conditions, the current in one line (the phase) is not ... 61000-3-4;199B The phase of each phase is not equal to one third of a fundamental wave cycle. Under normal operating conditions, the neutral line does not act as a current carrier. 3.8
Short-circuit load (Se) The three-phase short-circuit load is calculated by the nominal system current U and the impedance Z at the PCC, that is, Sge = Ur/Z
The rated power of the equipment is the value Sea calculated by the provisional line current effective value of the equipment and the rated current UV. (single-phase) or (phase-to-phase) Ien
Single-phase equipment
S=U, Ieu
SU, Je
Sr=HU, Ien..
Phase-to-phase modification
Balanced three-tree calibration
Small balanced three-rent equipment, 1 is the maximum effective value current of any phase in one phase. Short-circuit ratio sbort-cirruitratie (Re) The following definition applies to the characteristic value of eleven equipment or a set of equipment. Rx. =5-:/(3S..)
Rs= Ssc/(2.5g.)
Rc-Se/SL
4 General requirements
4. 1 Control method
Single-phase equipment
All three-phase equipment
In the case of fixed operation, the instrument allows the use of symmetrical control methods (differential phases of positive and negative half-waves). Symmetrical control methods that are prone to produce low-order (up to 40) harmonics in the input current cannot be used for the control of heating element voltages unless the heating power is less than 10% of 5g.
4.2 Harmonic current measurement
The equipment harmonic current emission limits specified in this guidance technical document apply to all types of power connections and line currents of load shielding. Single spectral currents below 0.6% of the residual current can be ignored. Table 1--Table 3 Current refers to the fundamental component of the rated current of the equipment. The first chapter introduces the test conditions for the measurement and calculation of harmonic currents. a) When a piece of equipment is put into or out of operation, whether it is under automatic or automatic control, the harmonic current that lasts for more than 10 minutes shall not exceed 1.5 times the limit given by the pole grade. h) The limit values in Table 1 to Table 3 are used for all other harmonic currents that appear when the equipment or parts of the equipment are damaged according to Chapter 7.
For the 2nd to 10th order fault currents and the 3rd to 19th order odd harmonic currents, each harmonic current within the maximum duration of 10% of the 2.5min observation period is allowed to be 1.5 times the limit values in Tables 1 to 3. 4.3 Equipment consisting of several independent components
For equipment consisting of several independent components and having a common current, the total input current of the equipment shall be compared with the limits in Tables 1 to 3 in Chapter 5.
5 Procedure for connecting equipment
A set of sequential evaluation levels is given below. If the equipment meets one of the criteria, it is not advisable to refuse its connection to the power supply system due to the increase in current.
Level 1: Connection based on network and equipment charges.
GB/Z17625.6—2003/ECTR61000-3-4:1998 Level 2: Connection based on network and equipment charges. Level 3: Connection based on user agreement. For equipment with an input current greater than 75A per phase, level D applies in any case. Note: The given figures apply to 220V/380V, 50H2 systems, with the effect of the system being considered. 5.1 First link
Each device transmitting to the public power supply system shall be connected to any low point of the power supply system with a short-circuit ratio K: equal to or greater than 33 according to the limit values in Table 1. Second, short-circuit ratios less than 3 are not considered, because in this case, the device will not meet the requirements of /Z162, and the consent of the authority is required. Note 2 In order to limit the current to the depth of the earth's center, the short-circuit ratio is greater than 33. 1 The 1st level harmonic current emission value of the connected equipment (5≤5/33) is increased by the effective value of the power cut-off value, and the effective value is 5.2 The 2nd number: According to the connection distance between the power grid and the equipment registered, the harmonic current component is filled with the European number
For the equipment that does not meet the spectrum filter emission value in Table 1, if the ratio of the line is R>%, a larger harmonic current emission estimate is allowed, Table 2 Single-phase, phase-to-phase and unbalanced three-phase supply equipment The harmonic current emission value R core value is small, the harmonic component does not exceed 15/#, Society 1, the phase component is not more than 15/#, Society 2, the adjacent components are carefully adopted between the planned late values, 23
Society 2 For unregistered two-phase equipment: this value is for phase. i=drum current required value; , one political electric death component, 4
each secondary acid current value:
5.3 3 destruction: according to the user's agreement on the power connection GB/Z 17625. 62003/IEC FR 61000-3-4,1996 If the equipment does not meet the conditions of the 1st and 2nd levels, the power supply department may agree to connect the equipment according to the user's proposal. In this case, the power supply department may implement it according to the requirements of its department, 3 The third frequency balanced three-phase equipment shall be equipped with a wave current setting value R of the maximum value of the center line
brought to the tram /
related to the adjustment of the second level so that it cannot withstand more than 16#%. Note 2, it is allowed to use a linear value between the lower R%. :, a basic current point positioning 1, a weighted current component, 6 product documents
6.1—General requirements
The manufacturer of the equipment shall provide the following information to all users: No electromagnetic interference that the equipment may cause;
Please state the current value 1.//Environment
Before the equipment is connected to the public power supply system, the consent of the power supply department must be obtained; Before the equipment is connected to the public power supply system, the guidance of the power supply department may be required. 6.2 Level 1
For equipment that is to meet the requirements of level 1, the manufacturer shall indicate in the instructions that after the supplier confirms R33, the equipment meets the requirements of GR/752.TFCTRGO00-3-4). 6.3 Level 2
For equipment that is to meet the requirements of level 2, the manufacturer shall indicate in the instructions that after the supplier confirms R5c: part X×, the equipment meets the requirements of GT/71762..G (TECR61000-3-4). The X× is the minimum value of R, which shall not exceed the values given in Table 2 or Table 3.
For equipment that does not meet either level 1 or level 2, the manufacturer shall indicate in the instructions that "the equipment meets the requirements of GR/717525.TFCTRGO00-3-4).4) of the emission value, and the manufacturer shall provide the THD and PWHD values calculated from the total of the micro-current values measured in Chapter ?
Type or test method
For type test, there are two different methods that can be selected or combined: a) direct measurement of harmonic current (see 7.1), and b) calculation of harmonic current through the effective cable simulation (see 7.2). 7.1 Requirements for test circuit
When the harmonic current is directly discharged, the test circuit is as shown in Figure ! and Figure 2. In GB/Z17625.6-2003/IECTR61000-3-4:199E, L is the phase-to-neutral voltage: Z, Zm is the impedance of the conductor and current conducting head, EUT is the sum of the positive and negative voltages between phases and neutral. When measuring the three-phase electric emission measurement circuit using a 2-terminal three-wave trace emission measuring circuit for the equipment under test, the test voltage added by the power supply should meet the following requirements: a) the test voltage LF should be the rated voltage of the equipment. For the voltage range, the single-phase test voltage is 220V, the single-phase is 3B0V<standard 1, or the test voltage value should be kept within 2% of the nominal value, the frequency is within 0.5% of the nominal value: b)
Under normal operation, the harmonic content rate of the test voltage after E shall not exceed the following values: e>
The 3rd harmonic is 0.9%
The 5th harmonic is 0.4%;
The 7th harmonic is 0.3%;
The 0th harmonic is 1.2%;
The 2nd to 10th even harmonic is 2%,
The 11th to 40th odd harmonic is 0.11%.
d) The peak value of the test voltage should be 1.40~1.4% times of its effective value and reach 97\.~93 after the zero point. The peak value of the voltage drop ATF of the current probe and the lead impedance should not exceed 0.5V. The receiving power can be measured according to the current of the panel and the current of the EU in Figure 1 or Figure 2. The relevant provisions of the measurement are given in Appendix B of GB1765.1-2003. 6
CB/Z 17625.6-2003/LECTR 61000-3-4;1998 For two-phase equipment required to measure: the ripple current of the two-phase equipment is sufficient, but in uncertain situations, when the three-phase equipment is not separated, the three-phase equipment is used.
Note: The evaluation of the current emission value and the corresponding minimum Rac can be achieved by simulating the equipment with a computer. In order to make the obtained results valid, the following steps should be taken:
a) According to the test arrangement of Figures 1 and 2, the equipment is tested under normal laboratory conditions. The power supply voltage may change slightly, including the voltage increase. However, the minimum value given in G/71803S.3 (1FC000-2-2) should be within the range of %
. If feasible, Ra = Su/S is equal, and R is the value of the preset value. The value is based on the spectrum current value obtained by the formula from the corresponding Ksc in Table 1 to Table 1. The selected area
should record the voltage spectrum and power supply impedance (the value at the fundamental frequency, the fundamental frequency is measured or the indirect value is obtained, including the current probe and line impedance value) obtained in the test.
6) The manufacturer's simulation of the equipment according to the software and program chips: the voltage spectrum and power supply impedance are used as input information in the simulation, and the calculated harmonic current value is compared with the measured result. If the measured value and the calculated value do not exceed the following maximum difference, the simulation is considered valid:
The measured value of each harmonic current is ±0.65% of the harmonic current range.
Information: If the equipment is of the same type, its relative input frequency does not exceed ±25% of the relative input frequency in the test. The simulation is valid for each ETT and no special operation is required.
() Press? .1 Before the test, the parameters shall be reviewed and simulated. The calculated value chain considers the increased current value under the test conditions, and can be used to maintain the minimum value of Rs from Tables 1 to 3.
7.3 Test and simulation conditions
The following clauses list the measurement and simulation conditions of harmonic currents for several types of equipment. For equipment not specified, in order to produce the maximum harmonic current under normal operating conditions, each continuous harmonic component shall be automatically or automatically controlled in turn. The equipment shall be tested in accordance with the operating requirements provided by the manufacturer. If necessary, the motor shall be put into operation before the test to ensure that the test results are consistent with normal use.
7.3.1, the measurement conditions for the equipment using a current source converter to convert the power converter at the shaft output (in the test). 7.3.2 The measurement conditions when the TIPS is in the working state (not in the standby state), that is, the measurement conditions when the filter is generated (in the test), 7.3.3 The measurement conditions of the equipment with large power consumption ITE (in the test). 7.3.4 Test conditions for other equipment
Test conditions for other equipment will be provided as required.The voltage spectrum and power impedance (values at the fundamental frequency, if measured or indirectly measured, including the current probe and line impedance) obtained in the test should be recorded. 6) Simulation of the equipment according to the manufacturer's software and program: The voltage spectrum and power impedance are used as input information in the simulation. The calculated harmonic current values are compared with the measured results. The simulation is considered valid if the measured values and the harmonic current values do not exceed the following maximum difference: The measured values of each harmonic current are equal to or less than -0.65% of the harmonic current range. If the equipment is of the same type, the relative input frequency and the relative harmonic current in the equipment shall not exceed ±25%. The simulation is valid for each ETT and no special operation is required. () The simulation is reviewed according to the requirements of ?.1 before the parameters are checked. The calculated value chain considers the increased current value under the test conditions, and can be used to maintain the minimum value of Rs from Tables 1 to 3.
7.3 Test and simulation conditions
The following clauses list the measurement and simulation conditions of harmonic current for several types of equipment. For equipment not specified, in order to produce the maximum harmonic current under normal operating conditions, each continuous harmonic component should be automatically or automatically controlled in turn. The equipment is tested in accordance with the operating requirements provided by the manufacturer. If necessary, the motor should be put into operation before the test to ensure that the test results are consistent with normal use.
7.3.1, for the measurement conditions of the equipment that uses a current source converter to convert the power converter at the output end of the shaft (in the test). 7.3.2 TIPS in the working state (not standby state), that is, the measurement conditions when the filter is generated (in the test), 7.3.3 Measurement conditions of equipment with large power consumption ITE (in the test). 7.3.4 Test conditions for other equipment
Test conditions for other equipment will be provided as required.The voltage spectrum and power impedance (values at the fundamental frequency, if measured or indirectly measured, including the current probe and line impedance) obtained in the test should be recorded. 6) Simulation of the equipment according to the manufacturer's software and program: The voltage spectrum and power impedance are used as input information in the simulation. The calculated harmonic current values are compared with the measured results. The simulation is considered valid if the measured values and the harmonic current values do not exceed the following maximum difference: The measured values of each harmonic current are equal to or less than -0.65% of the harmonic current range. If the equipment is of the same type, the relative input frequency and the relative harmonic current in the equipment shall not exceed ±25%. The simulation is valid for each ETT and no special operation is required. () The simulation is reviewed according to the requirements of ?.1 before the parameters are checked. The calculated value chain considers the increased current value under the test conditions, and can be used to maintain the minimum value of Rs from Tables 1 to 3.
7.3 Test and simulation conditions
The following clauses list the measurement and simulation conditions of harmonic current for several types of equipment. For equipment not specified, in order to produce the maximum harmonic current under normal operating conditions, each continuous harmonic component should be automatically or automatically controlled in turn. The equipment is tested in accordance with the operating requirements provided by the manufacturer. If necessary, the motor should be put into operation before the test to ensure that the test results are consistent with normal use.
7.3.1, for the measurement conditions of the equipment that uses a current source converter to convert the power converter at the output end of the shaft (in the test). 7.3.2 TIPS in the working state (not standby state), that is, the measurement conditions when the filter is generated (in the test), 7.3.3 Measurement conditions of equipment with large power consumption ITE (in the test). 7.3.4 Test conditions for other equipment
Test conditions for other equipment will be provided as required.
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