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GB 10235-2012: [GB/T 10235-2012] Hazard reducing device for arc welding power source
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[GB/T 10235-2012] Hazard reducing device for arc welding power source
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Arc welding transformer hazard reducing device
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Arc welding transformer against electric shock device
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Basic data | Standard ID | GB 10235-2012 (GB10235-2012) | | Description (Translated English) | [GB/T 10235-2012] Hazard reducing device for arc welding power source | | Sector / Industry | National Standard | | Classification of Chinese Standard | J64 | | Classification of International Standard | 25.160.30 | | Word Count Estimation | 13,172 | | Older Standard (superseded by this standard) | GB 10235-2000 | | Quoted Standard | GB/T 2423.3; GB/T 2900.22; GB 4208; GB/T 5169.10; GB/T 5169.11; GB/T 15579.1 | | Regulation (derived from) | National Standards Bulletin No. 41 of 2012 | | 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 Chinese standard specifies the welding power source electric shock devices products Types, basic parameters, structural and safety requirements, test methods, inspection rules and nameplate information. This standard applies to GB 15579. 1 provided f | GB 10235-2012: [GB/T 10235-2012] Hazard reducing device for arc welding power source---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.
Hazard reducing device for arc welding power source
ICS 25.160.30
J64
National Standards of People's Republic of China
Replacing GB 10235-2000
Welding power source electric shock devices
Issued on. 2012-12-31
2013-12-01 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
4 Product Types and basic parameters 2
Conditions 5 2
6 Installation Conditions 2
7 Structure and safety requirements 2
8 6 test methods
8 9 inspection rules
10 Nameplate 9
Table 1 delay time 3
Table 2 terminals can be connected conductor nominal cross-sectional area of 4
Table 3 limits of temperature rise 5
Table 4 glow-wire tip temperature and test time 7
Table 5 routine test items 9
Foreword
The standard Chapter 3 "Terms and definitions" are recommended, the rest are mandatory.
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard replaces GB 10235-2000 "welding transformer electric shock devices." This standard compared with GB 10235-2000 major changes
as follows.
--- Standard names arc welding power transformer to change.
--- Expanding the scope of the standard, the original standard applies only to single-phase power supply.
--- A reference to the standard has been updated.
--- The definition made some deleted or modified.
--- Increase the rated duty cycle rating, terminals can be connected to the wire nominal cross-sectional area and the range of terminals Protection
Requirements, increasing the temperature rise limits of power devices.
--- On the conditions of use, time delay, starting resistor values and test methods, the dielectric strength test voltage, shell protection grade, normal
Requirements, fault protection requirements of work instructions, drop test method, routine test items have been modified.
--- Cancel the provisions of the preparation and control products in the form of model provisions.
--- Canceled the electrode touches the workpiece a predetermined time, the electromagnetic contactor is, anti-jamming performance, capacity and complete sets of continuous action
Claim.
--- Cancel the packaging, transportation and storage requirements.
The standard proposed by China Electrical Equipment Industrial Association.
This standard by the National Standardization Technical Committee Welder (SAC/TC70) centralized.
This standard was drafted. Nantong thirty-nine welding machines Manufacturing Co., Ltd., Beijing Sanjiang Electrical Equipment Factory, Zhejiang Kende Electromechanical shares have
Limited Shenzhen Ruiling Industrial Co., Ltd., Wuxi Hanshin Electric Co., Ltd., Chengdu tripartite Electric Co., Ltd., Foshan City, Grand electricity
Gas Co., Ltd., Chengdu Electric and Inspection.
The main drafters of this standard. Wang Xiaojian, Meng Xiangyi, Zhuxuan Hui, Qiu light, He Xiaoyang, Yangqing Xuan, Rong Xi, Xing Jun.
This standard replaces the standards previously issued as follows.
--- GB 12350-1988, GB 12350-2000.
Welding power source electric shock devices
1 Scope
This standard specifies the product type welding power source electric shock devices, the basic parameters, structural and safety requirements, test methods, inspection rules and
Nameplate information.
This standard applies to GB 15579.1 under the various types of arc welding power source with electric shock devices (hereinafter referred to as the device).
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/T 2423.3 Environmental testing for electric and electronic products Part 2. Test methods - Test Cab. Damp heat test
GB/T 2900.22 Electrotechnical terminology Welder
GB 4208 housing protection (IP Code)
GB/T 5169.10 Fire hazard testing for electric and electronic products - Part 10. Glowing/hot wire based test methods - Glow wire mounted
General methods of test and set
GB/T 5169.11 Fire hazard testing for electric and electronic products - Part 11. Glowing/hot wire based test methods for finished burning
Hot wire flammability test method
GB 15579.1 welding equipment - Part 1. Welding power
3 Terms and Definitions
GB/T 2900.22, GB 15579.1 define the following terms and definitions apply to this document.
3.1
Operation Resistance actingresistance
The maximum resistance value of the device operation of welding power output circuit.
3.2
Starting time operatingtime
Contact with the workpiece from the electrode to the welding power reaches the rated load voltage.
3.3
Delay time delayingtime
Rated load voltage generated from the welding power source to the load voltage down to low altitude of time.
3.4
Built-in units innerdevice
Mounted within the housing arc welding power source, and a device sold separately. This device may be a separate housing, it can also be outside the arc welding power source
Shell cater to the housing unit.
3.5
Outside-mounted device outerdevice
Mounted on the welding power external devices.
3.6
Cabinet-mounted device deviceinsideswitchcabinet
Mounted on the inside of the arc welding power supply low voltage distribution panel devices.
4 Product Types and basic parameters
4.1 Product Type
According to the installation device into a built-in, externally mounted and cabinet-mounted.
4.2 Basic parameters
4.2.1 nominal input conditions
Rated input device using the power grid or energy to a secondary loop output arc welding power supply as the input device.
4.2.2 rated current level
Rated current level and the arc welding power supply device corresponds to the rated input current, 100A according to R5 recommended the following priority number system tranches;
100A above recommended by R10 priority coefficient bins. Commonly rated current (A) rating.
25,40,63,100,125,160.
4.2.3 Rated duty cycle (%)
20,35,60,80,100.
4.2.4 duty cycle
10min or continuous.
5 conditions of use
5.1 Environmental conditions
Shall comply with the relevant provisions of GB 15579.1.
5.2 Special environmental conditions
When the environmental conditions of use does not comply with 5.1, the user should be presented when ordering, be resolved through consultation with the manufacturer.
6 Installation conditions
Product demand device shall be specified by the manufacturer for installation.
7 Structure and safety requirements
7.1 motor skills
Power supply grid using a device should work correctly in 85% to 110% of rated input voltage; the secondary welding power source
Work within the loop output as a means of energy input welding power source should be specified load voltage range.
7.2 start-up time
Starting time of the device should not exceed 0.06s.
7.3 Delay time
Measuring the delay time of the device under nominal input conditions, measuring 10 times. Delay time in 10 times the maximum and minimum measurement
The difference should not exceed the values specified in Table 1, while the maximum delay time should not exceed 1 column in Table 2 of the limits specified.
Using the power grid supply apparatus input voltage of 110% and 85% rating, the device respectively 10 trials, seeking
The average value of the delay time in each case, the average difference between them and under nominal conditions measured delay time should not exceed 1 List Regulations
Value.
Table 1 Delay time
No-load voltage
Delay time
Difference between the maximum and minimum
Delay time when the average value of power fluctuations
The difference between the average value of the rated conditions
GB 15579.1 exceed the risk of electric shock
Rated load is not an environment for use
Voltage
0.3 0.1 0.05
GB 15579.1 in greater danger of electric shock
Rated no-load voltage used in the environment
Shock and not very dangerous environment to allow
When used between rated load voltage
2 0.5 0.3
7.4 Operation Resistance
Operation Resistance 7.4.1 device should not exceed 200Ω.
7.4.2 The device corresponding to arc welding power source facilities, safety tests of resistance movements.
a) the means and the welding power source are set at nominal input conditions, the welding power secondary circuit series adjustable resistance movement,
10 consecutive tests, each test at the output arc welding power source can produce low no-load voltage;
B) When using the power supply for the power grid of the device, the input voltage is adjusted to a value of 110% and 85%, respectively, repeating a),
Test the safety of its operation resistance means also should meet the requirements.
7.5 low no-load voltage
By means arc welding power source and are rated input conditions, reduced no-load voltage should not exceed the value of nameplate and GB 15579.1 in touch
Rated load voltage electrical regulations more dangerous environments values.
NOTE. It is recommended to reduce the load voltage as low as possible.
7.6 Terminals
Input and output terminals 7.6.1 device should have sufficient mechanical strength, and should have a predetermined fixed table 2 nominal cross-sectional area of the wire
ability.
Terminals and live parts 7.6.2 devices must be protected. No grid isolated terminals should reach IP2XC requirements.
Terminals and welding power source is connected to the secondary circuit should prevent accidental contact with the human body.
Table 2 terminals can be connected conductor nominal cross-sectional area
Rated maximum (continuous) current
Wire cross-sectional area of the range
mm2
25 2.5 ~ 6
354 ~ 10
506 ~ 16
6310 ~ 25
8016 - 35
10025 ~ 50
16050 ~ 95
7.7 Structural requirements
7.7.1 The device shall be designed so that only professionals use tools to change the technical parameters of the structure type.
7.7.2 In order to confirm whether the normal operation of the device should be set switches or buttons or use the self-test inspection.
7.7.3 should provide a reliable means (such as lights) indicating electric shock devices work properly.
Terminals 7.8 protective conductor
Metal enclosure means should be provided with a protective conductor terminals, its ability to hold the wire should be the same as the phase connections. This one
Terminals inside can not contact with the electrically neutral terminal, it can not be used for other purposes. And a protective outer-mounted cabinet-mounted device
Wire terminals should be marked next to the icon symbol "" or PE words.
7.9 Fault Protection
If the device does not work as electric shock 7.3 requires action, the voltage output of the time specified in Table 1 shall be reduced to a low no-load power requirements
Pressure value, and it can not be reset automatically.
7.10 normal work location
The unit normal installation position in any direction inclined 30 °, it can still work normally.
7.11 fire performance
Insulation material used in the device should be able to withstand a fire hazard testing 8.8 requirements.
7.12 clearances and creepage distances
According to the provisions of GB 15579.1, the device belongs to overvoltage category Ⅲ, grade 3 or 4 for the pollution of the environment, clearances and creepage distances
Shall comply with the provisions of GB 15579.1.
7.13 Insulation resistance
And input (output) voltage between live parts connected to each pole, each connected with the housing between the insulation resistance of not less than
2.5MΩ.
7.14 Dielectric strength
Between live parts and the input voltage is connected to the poles, the poles are connected together between the shell and should be able to withstand the following test voltage without flash
Network or breakdown phenomenon.
a) when the device is powered by a power grid, the test voltage AC 1875V;
b) When the apparatus by the secondary loop powered welding power source, an AC test voltage 1000V;
Grid c) means connected to the welding power source terminal and secondary there is a link between the port test voltage is 3750V.
7.15 Enclosure protection class
Shell protection grade outside-mounted device not less than IP21S; for enclosure class externally mounted devices for outdoor use should not be lower
In IP23S; enclosure class cabinet-mounted device shall be not less than IP20.
7.16 temperature rise limit
Under rated input conditions, means at rated duty cycle run, the temperature rise should not exceed the respective portions of Table 3
The predetermined value.
For other devices control device, the temperature rise limits should be consistent with the relevant provisions of the standard control devices.
Table 3 temperature rise limit
Determination of the position
Temperature rise limit
Part name materials and insulation levels Thermometer method Resistance method
Electromagnetic contactor silver and silver alloy 75 -
And electromagnetic contactor
Secondary coil of the transformer
Power device 60--
7.17 drop performance
Externally mounted and cabinet-mounted device shall be robust mechanical structure. After the drop test according to 8.15, should not have changed causing functional failures
Shaped or damaged.
7.18 moist heat resistance
The device should be able to wet heat resistance environment. After Damp heat test apparatus to bear 70% of the dielectric strength test voltage assessment, there should be no
Breakdown or flashover phenomenon.
7.19 reliability requirements
After the device subjected to reliability tests specified in 8.17, its low no-load voltage, start time, delay time and motion resistance should meet this
Standards.
8 test methods
8.1 General
Type examination when the ambient temperature is 10 ℃ ~ 40 ℃. The device being tested should be completely assembled new, dry.
Inspection, measuring instrument accuracy or precision should not be less than.
a) electrical measuring instruments. 0.5;
b) Thermometer. ± 2K.
8.2 Visual inspection
8.2.1 factory inspection apparatus with technical documentation is complete, complete.
8.2.2 Structure type inspection apparatus of whether the requirements of 7.7.
Terminal protective conductor 8.2.3 check whether the device complies with 7.8.
8.3 normal operating position to check
The position and orientation of the device by the manufacturer of the product is installed, then any direction inclined 30 °, check whether the device can work properly
For which the parameters without changes.
8.4 clearances and creepage distance measurement
Clearances and creepage distance detection method in accordance with the provisions of GB 15579.1 performed.
8.5 Housing protection grade test
According to GB 4208 requirements for foreign-mounted apparatus and drip-proof test anti-foreign body; for cabinet-mounted device to obstruct the trial.
8.6 Check the insulation resistance measurement
DC 500V megger insulation resistance measurement device. After reading the data pointer stable measurement, can not be subjected to the test
Electronic components, before measuring the short-circuit or disconnection of these electronic components within the device.
Measurement site as follows.
Input and output, a) means between the poles;
b) inputs and outputs, together with the connection between the device housing.
8.7 Dielectric strength test
Dielectric strength test voltage 50Hz AC voltage waveform is approximately sinusoidal, the peak is not more than 1.45 times the RMS. test
The duration of the test. type test for the 60s, factory test to 5s. Shall occur during the test flashover or breakdown, leakage current should not exceed their
Over 10mA.
That can not withstand the test of electronic components, before testing the short circuit or disconnection of these electronic components within the device. Start of the test facilities
Plus half of the test voltage does not exceed a predetermined value, and then gradually increased to a predetermined value, duration 60s (or 5s), and then gradually reduced to zero.
The dielectric strength test, the same device generally should not be repeated, if necessary, repeated voltage dielectric strength test as prescribed
80% of the value.
Dielectric strength test voltage after the damp heat test is 70% of the specified values.
The test voltage is applied to the site are as follows.
Input and output, a) means between the poles;
b) inputs and outputs, together with the means of connection between the housing;
Grid c) means of connection between the terminal and the welding power source connected secondary port.
8.8 Fire hazard tests
It means to sample parts or insulating material (non-metallic materials) should be GB/T 5169.10 and GB/T 5169.11 regulations
Fire hazard testing performed. The glow-wire tip temperature and time applied to the test sample is selected according to Table 4.
If several insulating parts made of the same material without the test temperature is the same, only a part of them at a higher temperature into
, The experiment results by GB/T 5169.10 and GB/T 5169.11 assessed.
Table 4 glow-wire tip temperature and test time
Components
The glow-wire tip temperature
Test time
Branch stream carrying member of insulating parts 960 ± 15 30 ± 1
Why he did not carry the stream member of insulating parts 650 ± 15 30 ± 1
8.9 Operation Resistance Measurement
Specified by the manufacturer, the device will be mounted on the corresponding arc welding power at rated input conditions, adjust the load in series in the secondary loop
Resistance, measuring apparatus ambassador to the maximum resistance value stable operation. The test shall be carried out 10 times, an average value, that is, the resistance movement of the device.
The measured resistance action switch connected to the secondary circuit arc welding power source with a voltage measuring device monitors the voltage of the secondary loop. When open
After shut off, observe the arc welding power secondary loop is in the no-load voltage state. The test shall be carried out 10 times, the secondary arc welding power back
Each road should be in no-load voltage state.
When the power supply for the use of the power grid means the input voltage is adjusted to a value of 110% and 85%, respectively, the test is repeated
10 times.
8.10 start time measurement
Specified by the manufacturer, the device will be mounted on the corresponding arc welding power at rated input conditions, adjust the load resistance, so as to achieve rated
flow. The secondary circuit of welding power source switch is turned on, the measurement is turned on when the transition time to work until the welding power from the secondary circuit.
The test shall be repeated five times, the average should not exceed 0.06s.
8.11 delay time measurement
8.11.1 specified by the manufacturer, the device will be mounted on the corresponding arc welding power at rated input conditions, adjust the load resistance, so as to achieve the amount of
Constant current. Disconnect the welding power source of the secondary circuit, measuring the welding current from the interrupt load voltage drops to low no-load voltage conversion until the time
between. The test was repeated 10 times. The average of 10 measurements, that the delay time of the device.
When 8.11.2 for the use of the power grid supply means, the input voltage is adjusted to a value of 110% and 85%, respectively, repeat the test
Test, in each case 10 times each test were calculated from the average of 10 measurements.
8.12 low no-load voltage measurement
Specified by the manufacturer, the device will be installed in no-load voltage exceeds the GB 15579.1 specified in greater danger of electric shock used in the environment
The rated load voltage of arc welding power at rated input conditions, adjust the load resistance, so as to achieve the rated current. Disconnect the welding power source
Secondary circuit, no-load voltage measured values.
The test shall be carried out five times, take the average of five measurements as low no-load voltage of the device.
When the power supply for the use of the power grid means the input voltage is adjusted to a value of 110%, the test is repeated.
8.13 Fault Protection Test
The device is mounted on the welding power at rated input conditions, with an external switch control device is the main contact jumper to simulate a short circuit fault.
Apparatus protection circuit welding power supply circuit should be completely cut off, or no-load voltage of the secondary loop drops low no-load voltage.
Measurement closed from an external device to switch the status of a security response time, the test should be repeated five times and calculate the average value.
8.14 temperature rise test
Specified by the manufacturer, the device will be mounted on the corresponding arc welding power source. Under rated input conditions, adjust welding power source output current,
Input current means the same rated current. Rise Test at rated duty cycle means. Temperature rise test performed to the device
The rate of temperature rise of no more than any member of 2K h time/date. Half-time measuring the temperature of the heating time should be in the final period during
get on.
8.15 Drop Test
Drop test is carried out in line means no external situation, the externally mounted and cabinet-mounted device from
a) mass of less than or equal to 25kg means from 250 10 0mm height,
b) quality means more than 25kg from 100 10 0mm height;
Free fall on the thickness not less than 10mm steel plate. The test shall be carried out three times, each time should be different edge means the edge of the land. test
When the delicate display device removed.
8.16 Damp heat test
Test according to the provisions of GB/T 2423.3 performed, and the Regulations for the following;
a) insulation resistance and dielectric strength test should be subject to pre-test equipment requirements of this standard;
b) means no packaging, no electricity, according to the normal conditions of use placement;
c) the temperature is hot and humid chamber (40 ± 2) ℃, relative humidity of (93 ± 3)%, the test cycle 48h;
d) When the test is not performed electrical performance testing;
e) At the end of the test, the device should be restored 1h ~ 2h under normal atmospheric conditions;
Note. The normal atmospheric conditions.
Temperature. 15 ℃ ~ 35 ℃;
Relative Humidity. 45% - 75%;
Pressure. 86kPa ~ 106kPa.
f) After the test surface moisture wiped with a clean cloth;
After g) means by the restoration process, and then measure the insulation resistance and dielectric strength test.
8.17 Reliability Check
8.17.1 Test conditions. device is mounted on a painted black 20mm thick laminate, according to the requirements of the temperature rise test wiring, ambient
Temperature (40 ± 2) ℃.
8.17.2 Test procedure. The device is mounted on the arc welding power supply, the rated supply voltage at rated duty cycle, the duty cycle
To 10min, continuous test 6h. After the test, measuring low no-load voltage, start time, delay time and the starting sensitivity, shall comply with the 7.2 ~
7.5 provisions.
9 inspection rules
9.1 General
Means subject to inspection after the manufacturer before being shipped, and should be accompanied by proof of means of acceptable quality documents.
9.2 Inspection classification
Means test is divided into.
a) routine tests;
b) type test.
9.3 routine test items
Each device in the factory should be routine testing, the test items shown in Table 5.
Table 5 routine test items
No. Test Item Test Method Technical Requirements Terms Terms
1 appearance inspection 8.2 7.6,7.7,7.8
Insulation Resistance 2 7.13 8.6
3 Dielectric strength 8.7 7.14
Operation Resistance 4 8.9 7.4
Starting time 5 8.10 7.2
6 Delay Time 8.11 7.3
Low no-load voltage 7.5 7 8.12
9.4 type test items
Type test items should include all of the standard test items.
10 Nameplate
Each should be installed or print a clear and indelible mark on the nameplate means.
It shall include at least the following information on the nameplate.
a) manufacturer's name and trademark;
b) the device name and model;
c) device number and date of manufacture;
d) rated input conditions;
e) rated duty cycle;
f) rated current;
g) Operation Resistance;
h) low no-load voltage;
i) enclosure protection rating (suitable for externally mounted and cabinet-mounted);
j) the implementation of the standard number.
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