GB/Z 18859-2002 Test guide for enclosed low-voltage switchgear and controlgear in the case of arc caused by internal fault
Some standard content:
TCS28,1.0.20
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National Standardization Guiding Technical Documents of the People's Republic of China GB/Z18859—2002
idt IE6/TR 361641:1996
Encloscd low-voltage switchgcar and controlgear asscmblies-Guide for testing under conditions of arcingdue to internal fault
2002-10-08 Release
People's Republic of China
National Quality Supervision and Inspection Condensation Edition
2003-04-01 Implementation
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G8/Z 188592002
This guidance document adopts the International Electrotechnical Commission 1EC Technical Report 1641 <Test Guidelines for Enclosed Low Voltage Switchgear and Control Equipment Under Internal Discharge Caused by Electricity 3. In terms of technical content and writing format, it is consistent with IEC Technical Report 51541.
By converting TEC Technical Report 611 into an international standardization guidance document in an equivalent form, my country has a test basis for the evaluation of the harm caused to personnel by internal faults in enclosed low voltage switchgear, and meets the needs of international trade, technology and economy. This guidance document is only for reference: the relevant parties shall give feedback to the standardization and technical department of the State Council on the construction and opinions of this guidance document.
This guidance document is issued by the China Electric Power Equipment Association. This guidance document is under the jurisdiction of the Technical Committee for Standardization of Electric Drive and Control Equipment: This guidance document is responsible for the evaluation of the harm caused to personnel by internal faults in electric drive and control equipment, and the Technical Committee for Standardization of Electric Drive and Control Equipment. The main drafting units of this guidance technical document are: Shanghai Electric Drive Design Institute, Beijing Electric Research Institute, the participating units of this guidance technical document are: Fuzhou First Switch Factory, Hongting Power Switchgear Co., Ltd., Shanghai Aiyu Electric Co., Ltd., Xifuli Energy Equipment Manufacturing Co., Ltd., the main drafters of this guidance technical document are: Han Baoshan, Ou An, Luo Shen, Niu Yunjian, Xu Dongzui, Ji Huiwen, Gu Baiqin, Ma Hui. EE Electrical Engineers Club
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IEC Foreword
The International Electrical Engineering Council (IEC) is a regional committee of all member countries formed by the Council of Directors of all member countries to carry out international cooperation on all relevant standardization issues in the field of power electronics. This International Standard is published on 1:00. The preparation of standards is the responsibility of the national committees. Any national committees that are interested in the fields involved may entrust the work to participate in the preparation of standards. [International standards have cooperative relations, and governments and governmental organizations may also participate in the preparation of standards. : 1S Cooperation with international standardization organizations ... Any product that has been published in accordance with a certain standard shall not be given a recognition mark. Special attention should be paid to the fact that some of the areas in the international marking may involve patent rights, and the manufacturer shall not be responsible for all these patent rights.
1EC1611 is the third form of the request report, which was drafted by the 17th Committee of the 1L Committee on Control Equipment and Control Equipment (17th Subcommittee). The following documents are provided for this technical report:
Committee Draft
ITn (SEC)141
Investment adjustment belt
ITI1(SFC)458
In the report without ticket listed in the table above, the detailed information of the report carried out when the approval of this technology is too prominent can be obtained. The report has no indicative form of the 3rd clock. This report is not regarded as an international standard, explanation
The date of this report is to let the test method reach the guidance under the condition of closed-type small complete set of protection equipment and control equipment, including the improvement and modification of the power distribution.
The benefit of this test is to evaluate the performance of the test and limit the risk of internal failure of the cell by the adult in the month. The waste test is not a type of test or standard test. It is a special test agreed upon between the manufacturer and the user. The test is given in the form of a medical transfer, not a scientific test.结乐封解严日制造：并用户同意办发，E
1总购买规
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National Standardization Guiding Technical Documents of the People's Republic of China Enclosed Low-voltage Complete Sets of Switchgear and Control Equipment in the Case of Arcing Caused by Internal Faults
Test Guide
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GR/7.18859-—2002
idtIRC/TR361641:1996
Main closed-type high-pressure switch equipment and control equipment (hereinafter referred to as "complete equipment") will generate electrical delays due to various physical phenomena: the electrical tension generated by the positive air in the casing will lead to internal positive force and overheating of the equipment, which will cause The equipment is subjected to stress and heat stress. In addition, the materials may produce heat products, which are released in the form of gas or steam outside the shell.
This product is designed to exceed the pressure inside the car board, the door, etc., and the heat effect of the heat effect point and the ejected hot gas and the heat effect of the flow of electricity or the root on the outside, and it is required that the internal board should not be damaged. It does not include the most dangerous and toxic gases. Sincerely test and library model door and benefit board group related news and treatment to ensure that 1.1 Use and use of this guidance technical document applies to all types of switchgear and control equipment manufactured in accordance with 1.1-17. The test is determined by the cooperation between the manufacturer and the user. This test is not a type test: 1.2! The meanings contained in the following standards are quoted in this guidance technical document to constitute the text of this standard. When this guidance technical document was published, the versions shown are valid. The following standards are used to discuss the various aspects of this technical guide that may be revised. www.bzxz.net
GH7231.1.-157 Low voltage equipment and control equipment Part - Standard test opening Part - Standard test equipment ihTEC6:433-! : 1992)
2 Definitions
2.1 The value of the short-circuit current on the incoming line unit is the maximum allowable value, which is the maximum allowable value of the short-circuit current on the incoming line unit, together with the allowable current duration (see 2.3). The light code requirement of this test is the square root of the current specification. The old value of the efficiency factor is C 7251.! 2.2 Allowable charge duration (milliseconds) The manufacturer of the equipment specifies a maximum allowable charge duration when the circuit is closed. This is combined with the allowable expected current under load conditions. 3.1 To meet the requirements of the test specification, different parts of the equipment may have different values. 2.3 Allowable short circuit current (pC)curcm rkler acigconcinjorNational Quality Union Supervision and Inspection Qualification and Quarantine General 2002-10-08 Approved 003-04-1
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A self-current value is given by the manufacturer. This value is the maximum allowable expected current value of the equipment protected by a current limiting switch to meet the requirements of the formula
This value is the square root of the AC component of the current. The corresponding mean current peak value is given in 7.5.3 of G7251.1997, which is the protection component For equipment, the manufacturer must provide the characteristics of the current limiting switch device (such as current limiting circuit breaker or fuse) (current rating, breaking capacity, disconnection, etc.). 3. Test selection The test should be carried out on a representative prototype. The following points should be noted: 1. The test should be carried out on a prototype that has not been tested before or on a machine with a relatively wide range of clean pieces. The empty installation conditions should be as close to the low-use conditions as possible. No installation is required. The manufacturer's model should be fully matched. It is allowed to use simulated components as long as they have the same volume and will not affect the test. 1. The prescribed personal protection measures should be effective. 3.1 The circuit test should be carried out on a three-phase test of the equipment. 3.2 The voltage applied during the test should be at least equal to the rated voltage of the equipment, with an error of 10%. 3.3 The test voltage shall be as specified by the manufacturer. It may be lower than the rated short-time withstand current. 3.3.1 The expected short-circuit current value shall be checked by the calibration curve. The impedance of the test shall be the same during the test period. Let the
circuit value be related to the internal circuit current (see 1H7251.11997 7.5.33.3.2). If the rated current of the internal test is set as the vehicle's fixed limiting circuit current, then for calibration purposes, the short-circuit point should be on the specified protection terminal and as close to the device as possible. For calibration under all other circumstances, the short-circuit point should be as close to the equipment as possible. 3.4 Frequency
When the rated frequency is 5Hz or 6Hz, the frequency at the beginning of the test should be between 8Hz and 62Hz. For other rated frequencies: the compensation difference should be within ±10% of the rated value. 3.5 Test duration selection
When testing, take into account the energization duration given by the manufacturer. It is not possible to select the action time of the protection component. If the detailed information of these protection components is not available, the energization duration should be at least 0.18. Usually this duration should be When the voltage exceeds 0.5%, the voltage lock device shall be used. The arc duration of the incoming line switch shall be 39. In order to facilitate the operation of the high-voltage protection equipment, 4 Test procedures 4.1 The power supply circuit and the test sample shall be the same as in normal use. If there is an additional force to continue the power supply, the direction that may produce strong stress shall be selected. 4.2 The electric current shall be ignited in a non-uniform agent. A steel ignition carrier shall be connected to the adjacent conductor at the shortest distance and connected to one phase. For different test currents, the copper wire of the size specified in Table 1 shall be used. EE Electrical Engineer Club http://elecn.com/CB/218859--2002 Table, test current and wire size |Test power supply/kA
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Conducting surface/mm
If the current limiting protective device is not affected during the test, the ignition point should be selected according to the charging current of the device. The ignition point should be selected so that the electric drive effect of the base material will produce a large pressure in the equipment. The ignition wire is not connected to an accessible bare conductor. When the ignition is connected, the insulation on the conductor should not be damaged. All conductors that are disconnected or punctured do not need to be tested. Note: The current cannot be induced by the solidification method. 43 The first test is carried out. If the arc is not induced during the entire test for half an hour and the fuse is not induced, the test should be repeated for one year. If it still cannot be continued for a certain time, no further test is performed. 4.4 Indicator (For observing the thermal effect of gases) 4.4.1 General rules
All indicators shall be made of black cloth. When placed, their front cut edges shall not face the test unit. Care shall be taken to ensure that they do not ignite each other when the indicators are installed. This can be achieved by fixing them, for example using a panel mounting rack (see Figure "). Indicators shall be made of black cloth of approximately 15) mm x 15 cm (the suitable unit of sieve cloth is about 159 g/m2) and placed against a small mounting rack.
4.4.2 Fixing of the indicator end
The indicator shall be fixed vertically near the surface where the equipment is connected to the detection unit. EE Electrical Engineer Club
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The indicator shall be placed at the highest? m. At a distance of 31m15K from the equipment, there is a point where the gas can be ejected (for example: joints, control room doors).
5 Test evaluation
The following criteria are used: The arcing effect mentioned in the single test. All the test results are evaluated according to the criteria. 1: Whether the doors, doors, etc. are in the correct state and are not opened! Criteria: Check the size of the components that can cause danger (these components include parts with armored edges or parts made of steel or plastic): Criteria 3: Check whether the electric tension on the shell of the complete set of equipment and the surface of the small melting hole causes leakage: 1: Whether the small length of the vertical cover is interesting to ignite (the small length of the plate and the adhesive ignite the manufacturer, not included in the evaluation); Whether the equipotential bonding layer of the connection parts outside the criteria is still valid. E Test report
The following information should be given in the test report
The rated value of the equipment under test shall be given in the drawing, detailed information on the strength of the equipment, pressure selection, arrangement of the equipment, and method of preparation:
Test connection
Material layout:
Expected load and the load used in the test!
The average value of the current distribution in the first half cycle: 1) Maximum value:
The actual current component:
d) Test time
The current diagram
Evaluation of the test results in each of the following chapters:4 Frequency
When the rated frequency is 5Hz or 6Hz, the frequency at the beginning of the test should be between 8Hz and 62Hz. For other rated frequencies: the compensation difference should be within ±10% of the rated value. 3.5 Test duration selection
When testing, consider the power-on duration of each set given by the manufacturer. It is not possible to select the action time of the protective device. If the detailed information of these protective devices is not available, the power-on duration should be at least 0.18. Usually this duration should be more than 0.5%. When there is no backup to lock the voltage, the arc duration of the incoming line switch should be taken as the allowable arc duration. In order to facilitate the operation of the high-voltage protection equipment,
4 Test procedure
4.1 Power supply circuit
The connection and supply of the test prototype should be the same as in normal use. If there is an additional force to supply power in the direction of continuous use, the direction that may produce strong stress should be selected.
4.2 The ignition conductor shall be ignited between conductors that are not uniformly connected. A steel ignition conductor shall be connected to the adjacent conductor at the shortest distance and to one phase. For different test currents, copper ignition wires of the size specified in Table 1 shall be used. EE Electrical Engineers Club
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CB/218859--2002
Table, test current and ignition wire size
Test power supply/kA
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Conductor surface/mm
If the test is affected by a current limiting protective device, the ignition conductor shall be selected from this table according to the charge current of the device. The ignition point shall be selected so that the electric drive effect of the base earth will produce a large pressure in the equipment. The ignition wire shall not be connected to an accessible bare conductor. When the ignition is changed, the insulators on the conductors shall not be damaged. No test is required if all conductors are disconnected or punctured. NOTE: The arc shall not be ignited by means of a solid wire. The first test shall be repeated for the entire test. If the arc does not rise for half the test period without re-ignition, the test shall be repeated for one year. If the arc does not rise for the required duration, no further test shall be performed. 4.4 Indicators (for observing the thermal effect of gases) 4.4.1 General instructions All indicators shall be made of black cloth. When placed, their front edges shall not face the test unit. Care shall be taken to ensure that they do not ignite when the indicators are connected. This can be achieved by fixing them, for example, using a panel mounting bracket (see Figure "). The indicators shall be of a size of approximately 1 5) mmx15cr:m color cloth (the unit of the screen cloth is about 159g/m), the position is ut
Figure "pointer small installation cabinet
4.4.2 Fixing of the indicator end
The indicator should be fixed vertically near the complete set of equipment and the surface where the detection personnel are connected. EE Electrical Engineer Club
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CB/Z18859-20-02
The indicator should be placed at the highest?m. 31m15K away from the complete set of equipment, and the surface cuts the gas can be ejected (for example: joints, control room door).
5 Test evaluation
The following criteria can be used: the arcing effect mentioned in the single test. All the selected test results are evaluated according to the criteria, and the three observations are as follows: 1. Whether the doors, plates, etc. are in the correct state and are not opened! Criteria: Check the size of the equipment components that may cause danger (these components include parts with armored edges or parts made of steel or plastic): 3. Check whether the electric tension causes leakage on the shell and surface of the complete set of equipment: 1. Whether the length of the vertical cover is small and ignitable (the plate and sticker ignition manufacturer's instructions, not included in the evaluation); whether the equipotential bonding layer of the connection parts outside the criteria is still valid. E test Test report
The following information should be given in the test report
The rated value of the tested equipment shall be given in the drawing, and the detailed information about the strength of the machine shall be given, the pressure, the layout of the equipment, the method of preparation, and the test method:
Test connection
Material arrangement:
Expected load and the load used in the test!
The average value of the current distribution in the first half cycle: 1) The actual current component:
d) Test time
·Electric current diagram
Evaluation of the test results in each section 5:4 Frequency
When the rated frequency is 5Hz or 6Hz, the frequency at the beginning of the test should be between 8Hz and 62Hz. For other rated frequencies: the compensation difference should be within ±10% of the rated value. 3.5 Test duration selection
When testing, consider the power-on duration of each set given by the manufacturer. It is not possible to select the action time of the protective device. If the detailed information of these protective devices is not available, the power-on duration should be at least 0.18. Usually this duration should be more than 0.5%. When there is no backup to lock the voltage, the arc duration of the incoming line switch should be taken as the allowable arc duration. In order to facilitate the operation of the high-voltage protection equipment,
4 Test procedure
4.1 Power supply circuit
The connection and supply of the test prototype should be the same as in normal use. If there is an additional force to supply power in the direction of continuous use, the direction that may produce strong stress should be selected.
4.2 The ignition conductor shall be ignited between conductors that are not uniformly connected. A steel ignition conductor shall be connected to the adjacent conductor at the shortest distance and to one phase. For different test currents, copper ignition wires of the size specified in Table 1 shall be used. EE Electrical Engineers Club
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CB/218859--2002
Table, test current and ignition wire size
Test power supply/kA
TYKAONTKAca-
Conductor surface/mm
If the test is affected by a current limiting protective device, the ignition conductor shall be selected from this table according to the charge current of the device. The ignition point shall be selected so that the electric drive effect of the base earth will produce a large pressure in the equipment. The ignition wire shall not be connected to an accessible bare conductor. When the ignition is changed, the insulators on the conductors shall not be damaged. No test is required if all conductors are disconnected or punctured. NOTE: The arc shall not be ignited by means of a solid wire. The first test shall be repeated for the entire test. If the arc does not rise for half the test period without re-ignition, the test shall be repeated for one year. If the arc does not rise for the required duration, no further test shall be performed. 4.4 Indicators (for observing the thermal effect of gases) 4.4.1 General instructions All indicators shall be made of black cloth. When placed, their front edges shall not face the test unit. Care shall be taken to ensure that they do not ignite when the indicators are connected. This can be achieved by fixing them, for example, using a panel mounting bracket (see Figure "). The indicators shall be of a size of approximately 1 5) mmx15cr:m color cloth (the unit of the screen cloth is about 159g/m), the position is ut
Figure "pointer small installation cabinet
4.4.2 Fixing of the indicator end
The indicator should be fixed vertically near the complete set of equipment and the surface where the detection personnel are connected. EE Electrical Engineer Club
http://elecn.com
CB/Z18859-20-02
The indicator should be placed at the highest?m. 31m15K away from the complete set of equipment, and the surface cuts the gas can be ejected (for example: joints, control room door).
5 Test evaluation
The following criteria can be used: the arcing effect mentioned in the single test. All the selected test results are evaluated according to the criteria, and the three observations are as follows: 1. Whether the doors, plates, etc. are in the correct state and are not opened! Criteria: Check the size of the equipment components that may cause danger (these components include parts with armored edges or parts made of steel or plastic): 3. Check whether the electric tension causes leakage on the shell and surface of the complete set of equipment: 1. Whether the length of the vertical cover is small and ignitable (the plate and sticker ignition manufacturer's instructions, not included in the evaluation); whether the equipotential bonding layer of the connection parts outside the criteria is still valid. E test Test report
The following information should be given in the test report
The rated value of the tested equipment shall be given in the drawing, and the detailed information about the strength of the machine shall be given, the pressure, the layout of the equipment, the method of preparation, and the test method:
Test connection
Material arrangement:
Expected load and the load used in the test!
The average value of the current distribution in the first half cycle: 1) The actual current component:
d) Test time
·Electric current diagram
Evaluation of the test results in each section 5:31m15K away from the equipment, there is a point where the gas can be ejected (for example: joints, control room doors).
5 Test evaluation
The following criteria are used: The arcing effect mentioned in the single test. All the test results are evaluated according to the criteria. 1: Whether the doors, doors, etc. are in the correct state and are not opened! Criteria: Check the size of the components that can cause danger (these components include parts with armored edges or parts made of steel or plastic): Criteria 3: Check whether the electric tension on the shell of the complete set of equipment and the surface of the small melting hole causes leakage: 1: Whether the small length of the vertical cover is interesting to ignite (the small length of the plate and the adhesive ignite the manufacturer, not included in the evaluation); Whether the equipotential bonding layer of the connection parts outside the criteria is still valid. E Test report
The following information should be given in the test report
The rated value of the equipment under test shall be given in the drawing, detailed information on the strength of the equipment, pressure selection, arrangement of the equipment, and method of preparation:
Test connection
Material layout:
Expected load and the load used in the test!
The average value of the current distribution in the first half cycle: 1) Maximum value:
The actual current component:
d) Test time
The current diagram
Evaluation of the test results in each of the following chapters:31m15K away from the equipment, there is a point where the gas can be ejected (for example: joints, control room doors).
5 Test evaluation
The following criteria are used: The arcing effect mentioned in the single test. All the test results are evaluated according to the criteria. 1: Whether the doors, doors, etc. are in the correct state and are not opened! Criteria: Check the size of the components that can cause danger (these components include parts with armored edges or parts made of steel or plastic): Criteria 3: Check whether the electric tension on the shell of the complete set of equipment and the surface of the small melting hole causes leakage: 1: Whether the small length of the vertical cover is interesting to ignite (the small length of the plate and the adhesive ignite the manufacturer, not included in the evaluation); Whether the equipotential bonding layer of the connection parts outside the criteria is still valid. E Test report
The following information should be given in the test report
The rated value of the equipment under test shall be given in the drawing, detailed information on the strength of the equipment, pressure selection, arrangement of the equipment, and method of preparation:
Test connection
Material layout:
Expected load and the load used in the test!
The average value of the current distribution in the first half cycle: 1) Maximum value:
The actual current component:
d) Test time
The current diagram
Evaluation of the test results in each of the following chapters:
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