Path:
Home >
GB >
Page85 > GB 31251.2-2014
Price & Delivery
US$549.00 · In stock · Download in 9 secondsGB 31251.2-2014: [GB/T 31251.2-2014] Resistance welding equipment -- Part 2: Electromagnetic compatibility (EMC) requirements
Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See
step-by-step procedureStatus: Valid
| Std ID | Version | USD | Buy | Deliver [PDF] in | Title (Description) |
| GB 31251.2-2014 | English | 549 |
Add to Cart
|
4 days [Need to translate]
|
[GB/T 31251.2-2014] Resistance welding equipment -- Part 2: Electromagnetic compatibility (EMC) requirements
|
Click to Preview a similar PDF
Basic data
| Standard ID | GB 31251.2-2014 (GB31251.2-2014) |
| Description (Translated English) | [GB/T 31251.2-2014] Resistance welding equipment -- Part 2: Electromagnetic compatibility (EMC) requirements |
| Sector / Industry | National Standard |
| Classification of Chinese Standard | J64 |
| Classification of International Standard | 25.160.30 |
| Word Count Estimation | 21,229 |
| Date of Issue | 12/5/2014 |
| Date of Implementation | 10/16/2015 |
| Quoted Standard | GB 4824-2004; GB 17625.1-2012; GB 17625.2-2007; IEC 60050-161; IEC 60050-851; IEC 61000-3-11-2000; IEC 61000-3-12-2011; IEC 61000-4-2; IEC 61000-4-3; IEC 61000-4-5; IEC 61000-4-6; IEC 61000-4-7; IEC 61000-4-11; IEC 61000-4-15; IEC 62135-1; IEC/CISPR 16-1- |
| Adopted Standard | IEC 62135-2-2007, IDT |
| Regulation (derived from) | Announcement of Newly Approved National Standards 2014 No. 27 |
| Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China |
| Summary | This Standard applies to the input voltage does not exceed 1 000 V ac rms maximum resistance welding and allied processes equipment used. This section does not specify safety requirements. Comply with the requirements of this section shall be deemed to be |
GB 31251.2-2014: [GB/T 31251.2-2014] Resistance welding equipment -- Part 2: Electromagnetic compatibility (EMC) requirements
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Resistance welding equipment Part 2. Electromagnetic compatibility (EMC) requirements
ICS 25.160.30
J64
National Standards of People's Republic of China
Welding equipment
Part 2. Electromagnetic compatibility requirements
Resistanceweldingequipment-Part 2.
Electromagneticcompatibility (EMC) requirements
(IEC 62135-2.2007, IDT)
Issued on. 2014-12-05
2015-10-16 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Introduction Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions 3
4 3 General test requirements
4.1 Test conditions 3
4.2 measuring device 3
4.3 Artificial mains network 3
4.4 voltage probe 4
4.5 antenna 4
5 emission and immunity test layout 4
5.1 General 4
5.2 auxiliary equipment 4
6 emission test 4
6.1 Equipment Category 4
6.2 Test conditions 5
6.3 5 emission limits
7 6 Immunity Test
Scope 7.1 Test 6
7.2 Test conditions 6
7.3 Immunity performance criterion 7
7.4 Immunity Level 7
8 user files 7
Appendix A (informative) limit 10
Appendix NA (informative) consistency correspondence between this part of the normative international documents referenced with our file 15
References 16
Table 1 Housing immunity level 8
Table 2 AC input power port immunity level 8
Table 3 Detection and control port immunity level 9
Table A.1 idle state device power terminal disturbance voltage limits 10
Table A.2 under load device power terminal disturbance voltage limits 10
The following table A.3 idle electromagnetic radiation disturbance limits 11
Table A.4 electromagnetic radiation disturbance limits under load 11
Table A.5 I1CC≤16A equipment input current harmonic current maximum allowable limit of 12
Table A.9 I1CC≤75A limits of resistance welding equipment 14
Foreword
All technical content in this section is mandatory.
GB 31251 "welding equipment" is divided into two parts.
--- Part 1. Design, manufacture and installation of safety requirements;
--- Part 2. Electromagnetic compatibility requirements.
This is Part 2 GB 31251's.
This section drafted in accordance with GB/T 1.1-2009 given rules.
This section uses the translation method is equivalent to using the international standard IEC 62135-2.2007 "Resistance welding equipment - Part 2. Electromagnetic Compatibility To
begging".
Consistency correspondence between this part of the normative international documents referenced with our document Appendix NA.
This part is proposed by the China Electrical Equipment Industrial Association.
This part of the National Welding Standardization Technical Committee (SAC/TC70) centralized.
This section is drafted. Jiangsu University of Science and Technology, Tianjin seven high-tech Co., Ltd., Tangshan Matsushita Industrial Equipment Co., Ltd. Shenzhenshihong
Parkinson Technology Industrial Co., Ltd. Miya Ji Trading (Shanghai) Co., Ltd., Hang Lung Guangzhou Electrical and Mechanical Co., Ltd., Chengdu Welding Institute, Zhejiang
Jiang Kende Mechanical & Electrical Co., Ltd., Wuxi Hanshin Electric Co., Ltd., Jiangsu southern Zhejiang Equipment Technology Co., Ltd., Jiangyin five-star welding Copper has
Limited Tianjin Branch Welding Equipment Co., Ltd., Chengdu tripartite Electric Co., Ltd., Chengdu Electric and Inspection.
The main drafters of this section. Fang Chen Fu, humic, Yangxue Wu, Han Yuqi, Munakata Yang, Zou spring buds, Du Wu, Zhu Xuanhui, He Xiaoyang, Li Feng,
Mouyuan Sheng, Chen Zhensheng, what is, Yang Qingxuan, Pan Ying.
Welding equipment
Part 2. Electromagnetic compatibility requirements
1 Scope
GB 31251 This part applies to the input voltage does not exceed the maximum AC RMS to 1000V resistance welding and similar processes used provided
Preparation. This section does not specify safety requirements.
Comply with this part of the welding equipment shall be deemed to meet the application requirements.
Frequency range from 0Hz ~ 400GHz.
This part of the electromagnetic compatibility requirements for resistance welding equipment is not lower than other common standards, so no need to add other electromagnetic compatibility test items.
Note 1. Typical processes are similar resistance brazing, soldering or resistance welding equipment by similar resistance heating process.
Note 2. The limit applies only to the frequency range specified in this part.
Resistance welding equipment is divided into Class A and Class B equipment.
This section provides.
a) RF radiation testing using the method specified in GB 4824-2004;
b) appropriate criteria and test methods for harmonic current emissions, voltage fluctuations and flicker.
Note 3. The distances using the welding equipment and receiving antenna is less than 30m, even if the resistance welding equipment standard limits, can not completely assure
TV or radio reception cause interference.
Note 4. In special cases, when highly susceptible apparatus from relatively close range of resistance welding equipment, other measures should be adopted to reduce the electromagnetic radiation.
This section also provides for immunity requirements and test methods for continuous, instantaneous conduction and radiation harassment harassment (including electrostatic discharge) of.
Note 5. These requirements do not include some special cases rarely occur.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB 4824-2004 industrial, scientific and medical (ISM) radio-frequency equipment - Electromagnetic disturbance characteristics - Limits and methods of measurement
(IEC /CISPR11.2003, IDT)
GB 17625.1-2012 Electromagnetic compatibility - Limits for harmonic current emissions (equipment input current ≤16A)
(IEC 61000-3-2.2009, IDT)
GB 17625.2-2007 Electromagnetic compatibility limits of the rated current per phase ≤16A and unconditional access to public low-voltage equipment
Voltage power supply system generated voltage fluctuations and flicker limits (IEC 61000-3-3.2005, IDT)
IEC 60050-161 Electrical term electromagnetic compatibility (InternationalElectrotechnicalVocabulary-Chapter161.
Electromagneticcompatibility)
IEC 60050-851 Electrotechnical Vocabulary - Chapter 851. Welding (InternationalElectrotechnicalVocabulary-Chapter
851. Electricwelding)
IEC 61000-3-11.2000 Electromagnetic compatibility - Part 3-11. Limits of rated current per phase and conditional access ≤75A
Voltage equipment produced in the public low-voltage power supply system, voltage fluctuations and flicker limits [Electromagneticcompatibility
(EMC) -Part 3-11. Limits-Limitationofvoltagechanges, voltagefluctuationsandflickerinpublic
low-voltagesupplysystems-Equipmentwithratedcurrent≤75Aandsubjecttoconditionalconnec-
tion]
IEC 61000-3-12.2011 Electromagnetic compatibility - Part 3-12. For each phase rated current > 16A and with the public low ≤75A
Harmonic currents produced by equipment connected to the system limits [Electromagneticcompatibility (EMC) -Part 3-12. Limitsfor
harmoniccurrentsproducedbyequipmentconnectedtopubliclow-voltagesystemswithinputcurrent
> 16Aand≤75Aperphase]
IEC 61000-4-2 Electromagnetic compatibility - Testing and measurement techniques - Electrostatic discharge immunity test [Electromagnetic
compatibility (EMC) -Part 4-2. Testingandmeasurementtechniques-Electrostaticdischargeimmu-
nitytest]
IEC 61000-4-3 Electromagnetic compatibility - Testing and measurement techniques RFEMS test [Electromagneticcom-
patibility (EMC) -Part 4-3. Testingandmeasurementtechniques-Radiated, radiofrequency, elec-
tromagneticfieldimmunitytest]
IEC 61000-4-4 Electromagnetic compatibility Testing and measurement techniques - Electrical fast transient burst immunity test [Electromagnetic
compatibility (EMC) -Part 4-4. Testingandmeasurementtechniques-Electricalfasttransient/burst
immunitytest]
IEC 61000-4-5 Electromagnetic compatibility test and measurement technology surge (impact) immunity test [Electromagneticcompati-
bility (EMC) -Part 4-5. Testingandmeasurementtechniques-Surgeimmunitytest]
IEC 61000-4-6 Electromagnetic compatibility Testing and measurement techniques Immunity to conducted disturbances induced field [Electromagnetic
compatibility (EMC) -Part 4-6. Testingandmeasurementtechniques-Immunitytoconducteddis-
turbances, inducedbyradio-frequencyfields]
IEC 61000-4-7 Electromagnetic compatibility test and measurement technology power supply systems and equipment connected harmonics, interharmonics measurements and instrument
Control guidelines [Electromagneticcompatibility (EMC) -Part 4-7. Testingandmeasurementtechniques-Gen-
eralguideonharmonicsandinterharmonicsmeasurementsandinstrumentation, forpowersupplysys-
temsandequipmentconnectedthereto]
IEC 61000-4-11 Electromagnetic compatibility Testing and measurement techniques - Voltage dips, short interruptions and voltage variations immunity tests [E-
lectromagneticcompatibility (EMC) -Part 4-11. Testingand measurementtechniques-Voltage
dips, shortinterruptionsandvoltagevariationsimmunitytests]
IEC 61000-4-15 electromagnetic compatibility test and measurement technology scintillation functional and design specifications [Electromagneticcom-
patibility (EMC) -Part 4-15. Testingandmeasurementtechniques-Flickermeter-Functionaland
designspecifications]
IEC 62135-1 Resistance welding equipment - Part 1. Design, manufacture and installation of safety requirements (ResistanceWeldingequip-
ment-Part 1. Safetyrequirementsfordesign, manufactureandinstalation)
IEC /CISPR14-1 electromagnetic appliances, electric tools and similar apparatus compatible with the requirements of Part 1. Emission (Electromag-
neticcompatibility-Requirementforhouseholdappliances, electrictoolsandsimilarapparatus-Part
1. Emission)
IEC /CISPR16-1-1 radio disturbance and immunity measuring apparatus and methods - Part 1-1. Radio disturbance and
Immunity measuring apparatus - Measuring apparatus (Specificationforradiodisturbanceandimmunitymeasuringapparatus
andmethods-Part 1-1. Radiodisturbanceandimmunitymeasuringapparatus-Measuringapparatus)
IEC /CISPR16-1-2 radio disturbance and immunity measuring apparatus and methods - Part 1-2. Radio disturbance and
Immunity measuring apparatus - Ancillary equipment Conducted disturbances (Specificationforradiodisturbanceandimmunitymeasuring
apparatusandmethods-Part 1-2. Radiodisturbanceandimmunitymeasuringapparatus-Ancilary
equipment-Conducteddisturbances)
IEC /CISPR16-1-4 radio disturbance and immunity measuring apparatus and methods - Part 1-4. Radio disturbance and
Immunity measuring apparatus - Ancillary equipment - Radiated disturbances (Specificationforradiodisturbanceandimmunitymeasuring
apparatusandmethods-Part 1-4. Radiodisturbanceandimmunitymeasuringapparatus-Ancilary
equipment-Radiateddisturbances)
ISO 669 solder resistance welding machine mechanical and electrical requirements (Resistancewelding-Resistanceweldingequip-
ment-MechanicalandelectricalRequirement)
3 Terms and Definitions
ISO 669, IEC /CISPR publication, IEC 60050-851 and IEC 62135-1 define the following terms and definitions apply
In this document.
3.1
Cable port cableport
Point conductors or cables connected to the device.
Note 1. For example signal port, a control port and power port.
Note 2. The secondary loop resistance welding equipment, not the cable port, the port is part of the housing.
3.2
Conventions load conventionalload
Load state of the electrode short circuit, see ISO 669.
3.3
Conventional value conventionalvalue
The determination of the parameters used for comparative purposes, the value of the standard calibration and testing.
Note. In the actual welding process, not necessarily conform to the agreed value.
3.4
Shell port enclosureport
Electromagnetic radiation can affect equipment or invasive physical boundaries.
3.5
Idle idlestate
Resistance welding device is powered on, but no welding current output state.
3.6
Port port
Specific interfaces specified equipment with the external electromagnetic environment.
4 General test requirements
4.1 Test conditions
The test shall be specified at rated conditions and IEC 62135-1 given input voltage and frequency. Get shot at 50Hz
Frequency emission and immunity of the results for the same mode of operation as effective at 60Hz, and vice versa.
4.2 measuring device
Measuring devices shall meet the requirements of IEC /CISPR16-1-1 and Table 1, Table 2, Table 3 standards involved.
Low-emission tests measuring device shall comply with the requirements of IEC 61000-4-7 concerning harmonic and IEC 61000-4-15 on voltage fluctuations
Requirements.
4.3 Artificial mains network
Measuring the power terminal disturbance voltage values must be consistent with the artificial mains V-IEC /CISPR16-1-2 provisions 50Ω/50μH of
The internet.
Artificial mains network should be between the terminal equipment can be tested within the radio frequency range to provide a predetermined impedance, and can be tested
Unwanted RF signal isolation device with the power supply line.
4.4 voltage probe
When not using the artificial mains network voltage probes should be used for testing. Probes are connected between each power line and the ground reference.
The probe consists of a resistor and a DC blocking capacitors, so that the total resistance value between the power line and the ground is at least 1500Ω. Capacitor or any
What impact protection devices used to measure the accuracy of the measurement should not exceed 1dB, or should be calibrated.
4.5 Antenna
In the 30MHz ~ 1GHz frequency range, the antenna should comply with IEC /CISPR16-1-4, and in the horizontal and vertical polarization direction
Measure up. The distance between the antenna and the ground should not be less than 0.2m.
5 emission and immunity test layout
5.1 General
Emission and immunity tests shall be conducted under the following typical installation. In this installation, welding equipment being tested considered to meet the present
The requirements needed parts.
Such as welding equipment is to be connected to auxiliary equipment or part of equipment, the resistance welding equipment should be tested simultaneously with the end of the run
The minimum configuration required auxiliary port device is connected. If the welding equipment has many similar ports or ports with similar connections, that
Why, you must select the actual operation of a sufficient number of port analog resistance welding equipment during the test to ensure coverage of all the different types of
port.
Low frequency emission limits measured according to the relevant standard test procedures.
Immunity test requirements in Table 1, Table 2 and Table 3.
Being tested for resistance welding equipment configuration should specify in detail in the test report.
A class welding equipment can be tested in the test site or in the field according to the manufacturer's wishes.
Note. Due to the size, complexity or operating conditions some welding equipment may have to be field tested to confirm their compliance with the radiated disturbance limits.
Class B welding equipment shall be tested in the test site.
5.2 Auxiliary Equipment
Auxiliary equipment shall be tested with resistance welding equipment, according to the manufacturer's recommendations and installation connection.
6 emission test
6.1 Device Classification
6.1.1 A Class A equipment
A class of non-household equipment and not directly connected to housing for low-voltage power grid equipment used in the facility.
6.3 Class A equipment shall meet the specified Class A limits.
6.1.2 Class B equipment
Class B equipment is for home and directly connected to the housing for low-voltage power grid equipment used in the facility.
6.3 Class B equipment shall meet the specified Class B limits.
6.2 Test conditions
6.2.1 RF emission test conditions
Emission limits should be tested in accordance with GB 4824-2004 Test procedures and requirements as well as the steps in Chapter 5.
Resistance welding equipment is a great difference in the design and operating conditions, the test shall be under the following conditions.
a) an idle state;
b) load.
--- Adjust welding circuit for minimum resistance and maximum current (Example. with a minimum electrode arm length and spacing);
--- Electrode adjustment in the short-circuit state;
--- For other adjustment methods to adjust the current to achieve maximum emission;
Example. thyristor controlled equipment, the firing angle will produce maximum emission value lags 90 °.
--- Select the appropriate duty cycle test for resistance welding equipment, welding heating time and the test equipment requirements.
The selected test parameters should be fully documented in the file.
Test conditions 6.2.2 Test low frequency
Differences in resistance welding equipment design and great working conditions, shall be tested under the following conditions.
--- Adjust welding circuit for minimum resistance and maximum current.
--- Electrode adjustment in short-circuited.
--- For other adjustment methods to adjust the current to achieve maximum transmission.
--- According to equation (1) calculate the maximum resistance welding equipment welding current duty cycle X.
X =
(I2P) 2
(I2MAX) 2
(1)
Where.
I2P --- continuous output current;
I2MAX --- maximum welding current.
--- Based on the calculated duty cycle, choose to adapt to the observation period was tested for resistance welding equipment and welding and heating time
Measuring means.
The selected test parameters should be fully documented in the file.
6.3 emission limits
6.3.1 power supply terminal disturbance voltage
6.3.1.1 idle mode
A power supply terminal disturbance voltage limits for class welding equipment, see the limits in Table 2a 1 GB 4824-2004 set of devices.
Power terminal disturbance voltage limits for class B welding equipment, see the limits in Table 2b 1 GB 4824-2004 set of devices.
When the device being tested should meet as measured by the average detector the average prescribed limits and measurement with the quasi-peak detector
Meet the quasi-peak limit of the average value, or the quasi-peak detector measurement requirements.
6.3.1.2 load pattern
A power supply terminal disturbance voltage limits for class welding equipment GB 4824-2004 Limit tables 2a see two sets of equipment. It should be based on
Enter the maximum short-circuit current I1CC select the appropriate limits.
Power terminal disturbance voltage limits for class B welding equipment GB 4824-2004 see limits in Table 2b 2 set of devices.
When the device being tested should meet as measured by the average detector the average prescribed limits and measurement with the quasi-peak detector
Meet the quasi-peak limit of the average value, or the quasi-peak detector measurement requirements.
Class A equipment impulse noise (the click sound) less than 5 times per minute, will not be considered.
Class B equipment impulse noise (the click sound) less than 0.2 times per minute, then allowed to relax the limit of 44dB.
The click sound when between 30 beats per minute to 0.2 times per minute, allowing the limit raised to 20lg (30/N) dB (N per minute of Cameroon
Times cracking sound). For the intermittent sound of the click See IEC /CISPR14-1.
6.3.2 Electromagnetic radiation disturbance
6.3.2.1 General
In radiated disturbance emission test, the distribution of the antenna and the test equipment shall be between the requirements of GB 4824-2004 Chapter 5.
6.3.2.2 idle mode
Electromagnetic radiation disturbance limits for Class A resistance welding equipment, see GB 1 set of limits for 4824-2004 in Table 3.
Class B electromagnetic radiation disturbance limits for resistance welding equipment, see GB 1 set of limits for 4824-2004 in Table 3.
6.3.2.3 load pattern
Electromagnetic radiation in the frequency range of 30MHz ~ 1000MHz Class A resistance welding equipment disturbance limits see table GB 4824-2004
5a limits.
Electromagnetic radiation in the frequency range of 30MHz ~ 1000MHz harassment Class B limits for resistance welding equipment, see Table 4 GB 4824-2004
Group 2 limits.
6.3.3 low-emission limits
Limit is.
a) for harmonic current emissions and see GB 17625.1-2012 IEC 61000-3-12.2011;
b) the voltage fluctuations and flicker and see GB 17625.2-2007 IEC 61000-3-11.2000.
If the scope of application of these standards contain welding equipment, its limits also apply to resistance welding equipment. The maximum short-circuit current input
I1CC is selected based on the use of standards.
Note. For other devices, the manufacturing stage there are no special requirements. Connection conditions can be selected according to the local power supply conditions. Proposed reference GB /Z17625.4,
GB /Z17625.5 and GB /Z17625.6.
7 immunity test
7.1 Scope of test
Free electronic control circuit of resistance welding equipment, shall be considered to meet the necessary immunity requirements without testing.
Housing, AC input power port immunity level test measuring program and port control line port, Table 1, Table 2 and Table 3.
7.2 Test conditions
According to the layout specified in chapter 5 were tested for resistance welding equipment. Two electrodes for resistance welding equipment indirectly a resistance of 1kΩ.
Such as adjustable control angle is adjusted to 90 °, resistance welding equipment set to be tested for a specific duty cycle and welding heating time, or times
Continuous current output level of the secondary voltage is monitored to assess its compliance with the performance criteria.
When the test can not be performed on the entire resistance welding device, it can be performed on electronic components.
7.3 Immunity performance criteria
7.3.1 Criterion A
a) resistance welding equipment shall continue to work properly.
b) secondary voltage allowing fluctuations within ± 10% of set value range.
c) can not exceed the preset heating time.
d) when the heating must not be interrupted.
e) In the "single" mode of operation, it should be the right way to terminate the welding cycle.
f) In the "Repeat" "seam welding" "continuous" mode of operation, you should be able to interrupt the cycle start switch.
g) all control functions should be continuity.
h) does not allow a semiconductor power switch is faulty.
i) are not allowed to store data loss.
7.3.2 Criterion B
a) secondary voltage allowed to fluctuate within the range of 50-100% of the set value.
b) If the heating time within a predetermined current is interrupted, the weld cycle to "no current" termination, may require manual reset.
c) can not exceed the preset heating time.
d) In the "single" mode of operation, it should be the right way to terminate the welding cycle.
e) In the "Repeat" "seam welding" "continuous" mode of operation, you should be able to interrupt the cycle start switch.
f) does not allow a semiconductor power switch is faulty.
g) is not allowed to store data loss.
7.3.3 Criterion C
a) If the loss of function can be restored automatically or by the operator, it allows a temporary loss of function. This requires resistance welding set
Prepared by properly controlling the voltage switch recovery.
b) does not allow a semiconductor power switch failure, but allows temporary loss of function.
c) does not allow storage of data loss, unless it can be restored by the control operation.
7.4 immunity level
Housing immunity requirements in Table 1, AC input port immunity requirements shown in Table 2, detection and control of the port immunity requirements see
table 3.
8 user files
Giving the user's files should be clearly marked with the class of device.
Users should be informed, through the appropriate installation and correct use, so that the interference resistance welding equipment to minimize emission. system
The manufacturer or agent to deal with the specification and use of information each responsible for resistance welding equipment. The information is as follows.
a) For Class B equipment shall comply with a written statement of its industrial and residential environment, including by the public low-voltage power supply system of residential environments
Electromagnetic compatibility requirements.
b) for Class A equipment, the instructions for use shall include the following text or equivalent text.
Warning. A class of equipment does not apply to...
...
