This standard specifies the requirements and qualification criteria for shock and collision tests on measuring relays and protective devices. This standard is part of a series of standards that specify requirements for vibration, shock, collision and earthquake. It applies to electromechanical and static measuring relays and protective devices with or without output contacts. This standard applies to newly manufactured measuring relays and protective devices. The tests specified in this standard are type tests. GB/T 14537-1993 Shock and collision test for measuring relays and protective devices GB/T14537-1993 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Shock and bump tests on measuring relays and protection equipment
GB/T14537-93
IEC 255-21--2
This standard is equivalent to IEC25521-2 Electrical relays Part 21: Vibration, shock, bump and earthquake tests on measuring relays and protection equipment Chapter Shock and bump tests. 1 Content and scope of application
This standard specifies the requirements and qualification criteria for shock and bump tests on measuring relays and protection equipment. This standard is part of a series of standards that specify requirements for vibration, shock, bump and earthquake, and is applicable to mechanical and static measuring relays and protection equipment with or without output contacts (hereinafter referred to as products). This standard also includes two types of tests: a.
impact test (with or without excitation applied to the product); b.
, bump test (without excitation applied to the product). This standard applies to newly manufactured measuring relays and protection devices. The tests specified in this standard are type tests. 2 Purpose
The purpose of this standard is to specify:
Definition of terms used;
Test conditions:
Standard test severity levels:
Test procedure:
Qualification criteria:
3 Terminology
For the definitions of the terms specified in this standard, reference should be made to: a. Interdisciplinary Electrical Dictionary (IEV) [EC50): (H 290 & Interdisciplinary Technical Terms); 1E68-2-27 Basic Environmental Test Procedure, Part 2: Tests - Test Ea and Guide: Shock; GB2423.5 Environmental Test Procedure for Electric and Electronic Products Test Ea: Exhaust Test Method IEC68229 Test Eb and Guide: Collision GB2423. Basic Environmental Test Procedure for Electric and Electronic Products c. Test Eb and Guide: Collision test method; d. IEC 2557 & Series of Relay Standards: 11FF: 255--21-1 Part 21: Vibration, shock, impact and earthquake tests on relays and protective devices...--Chapter e.
: Vibration test (E string). (311287 "Vibration (string) test for relays and relay protection devices"; f, 1S standard 2041 vibration and shock: dictionary. GB2298 mechanical vibration, shock, terminology. Approved by the State Administration of Technical Supervision in 1993-D717
1994-02-01
GB/T 14537-93
For this standard, the following terminology definitions should also be used; 3.1 Shock test shock test
Under specified conditions, the products with or without excitation are subjected to a limited number of single shocks on three mutually perpendicular axes of the test product in turn to determine its ability to withstand shocks. Note: "Test product" includes any auxiliary part of a certain integral functional feature of the tested relay or protection device. 3.2 Shock response test shockresponse test Under specified conditions, the product with excitation may be subjected to a shock during operation (whether it is operating normally).
3.3 Shock tolerance test
shockwithstandtest
A high-intensity shock test to determine the product without excitation's ability to withstand the shock that may be encountered during transportation and installation.
3.4 ​​Bump test
burp lessl
A test to determine the ability of a product to withstand the impact of a limited number of shocks on three perpendicular axes of the test product without applying an excitation, in order to determine its ability to withstand the impact of the impact that may be encountered during the transmission. 4 Requirements for shock and collision tests
The main parameters of the shock and collision test are as follows: a. Acceleration;
h. Duration of the nominal pulse;
: the number of pulses.
In this standard, the pulse waveform used is a half-sine wave. 4.1 Test equipment and installation
Requirements for the characteristics and installation requirements of the shock and collision generator and the generator shall comply with the following provisions. These characteristics shall apply when the product is installed on the generator. 4.1.1 Acceleration tolerance
The nominal pulse waveform of the shock and collision test shall be the fixed sine wave represented by the magic line in Figure 1. The true value of the actual acceleration shall be limited to the limit represented by the solid line in Figure 1.
GB/T14537--93
Figure 1 Pulse waveform (half-sine wave) and allowable error of shock and collision test Error range:
Nominal pulse:
D: Duration of nominal shock +
A: Value of nominal shock velocity:
T: Minimum time for shock and collision generated by conventional shock test bench to be monitored: T: Minimum time for shock and collision generated by conventional shock test bench to be monitored. 4.1.2 Pulse duration tolerance
The actual pulse duration and tolerance are shown in Table 1. Table 1 Pulse duration and tolerances
Test type
Strike test
Impact test
4.1.3 Transverse motion
Duration of pulse
When measured by a measuring system in accordance with 4.1.5, the peak value of the acceleration in the positive or negative direction perpendicular to the specified direction of impact or collision shall not exceed 30% of the peak value of the acceleration of the nominal pulse in the specified direction at any time. 4.1.4 Repetition rate
During the impact and collision tests, the relative motion in the specimen during the interval between two pulses shall be essentially zero and the acceleration value at the reference point shall be within the specified range shown in Figure 1. In general, for the collision test, a rate of 1 to 3 pulses per minute is used.
4.1.5 Measurement system
The measurement system shall meet the following requirements:
GB/T14537—93
The impact and collision pulses shall be measured with an accelerometer installed on a reference point specified by the product standard: a
b. The characteristics of the measurement system shall be able to determine that when measured in the specified direction at the reference point, the actual values ​​of the impact and collision pulses shall be within the tolerance range specified in Articles 1.1.1 and 4.1.2 of this standard; the frequency characteristics of the entire measuring system including the accelerometer may have a great influence on the accuracy, and the impact and collision tests shall comply with the requirements of Figure 2 and Table 2. idE
24B times
Figure 2 Frequency characteristics of the measurement system for shock and impact tests Table 2 Frequency characteristics of the measurement system for shock and impact tests Duration of impact
Test type
Impact test
Bump test
4.1.6 Installation
The installation of the test piece shall meet the following requirements:
Lower positive frequency
Upload frequency
Out of range The frequency response may rise to a frequency higher than: 1dB, kHz
The test piece shall be fixed to the shock or impact test in the normal way it is connected during operation. The collision test bench should be installed so that the force acting on the product under test is consistent with the force to which the product is subjected in normal use; the wiring connected to the test product should be connected so that its restraining effect on the test product is no greater than the effect of the wiring when the product is in the normal working position; the test product should be ensured not to be significantly affected by the magnetic field generated by the test system. The specific requirements are specified by the product standard. 4.2 Severity level of impact test This standard includes two types of impact tests: a. Impact response test on products with the maximum amount of stimulation; h. Impact tolerance test on products without stimulation. GB/T 14537-93 Both the impact response test and the impact tolerance test include three different severity levels (0, 1, 2), and their main parameters are listed in 4.2.1 and 4.2.2 respectively.
For special types of products, the product standard shall specify the different severity levels of the shock response test and the impact tolerance test. When it is specified as [level, the above test shall be exempted.
4.2.1 Shock response test
This test is applicable to products with added excitation. Table 3 lists the shock response test parameters of different severity levels (see item A1 in Appendix A).
Table 3 Shock response test parameters of different severity levels Level
Acceleration peak value A
(gn)m/s
110398
Duration of pulse D
Number of pulses in each period
Note: 1) The units and data in brackets are the values ​​specified in IEC 235--21--2. The units and data in brackets are the legal type median and alternating data. Tables 4 and 5 are all alternate.
2) Three pulses are placed on each axis and six pulses are dropped in each period. 4.2.2 Shock test This test is applicable to products without excitation. Table 4 lists the shock test parameters for different severity levels. 4 Shock test parameters for different severity levels Level Acceleration value A (gn) n/a (15) 147 (30) 294 ... Table 5 Parameters of collision tests of different severity levels Level
Peak acceleration -4
(gn)m/ss
(10>96
(20>196
Pulse duration D
Note: 1) F: 10) collisions in each direction correspond to 2000 collisions on each axis. 4.4 Principles for selecting the severity level of impact and collision avoidance tests. Number of pulses in each direction
GB/T 14537-93
The severity level of the test corresponds to the ability of the product to withstand the mechanical shocks and collisions that it may experience in individual transportation or use methods and is classified according to Table 6.
Table 6 Principles for selecting test severity levels
Products with high shock and collision requirements
Products under normal transportation and normal transport conditions Applicable occasions
Products with high safety factor requirements, used in occasions with high impact or collision strength (such as above) and suitable for transportation conditions under severe conditions. The packaging design and display of the product should ensure that the severity level parameters will not be exceeded during transportation. 4.5 Test procedure for shock response test
The shock pulse characteristics should be measured at the reference point specified in the product standard. During the test, the product should be in the normal working position in the housing with a cover. Any transport restrictor should be removed. Note: Shrimp fruit products are not convenient for overall testing. After consultation between the manufacturer and the user, they can be tested by functional sub-components. 4. 5. 1 The test piece shall be subjected to 3 pulses in each direction (i.e. up, down, left, right, front and back) on each of the three parallel perpendicular axes (i.e. 18 pulses in total). The peak value of acceleration shall be selected according to the severity level specified in Table 3. 4.5.2 Under the basic push conditions specified in the product standard, the following auxiliary and input excitation values, as well as the output circuit load specified in the product standard, are tested on the product: Auxiliary excitation disk: Rated value: Output circuit load: No load except monitoring instrument or load as specified in the product standard: Input excitation quantity: The action value of the characteristic quantity plus and minus the value specified in the product standard that will not cause malfunction due to impact Variation: For example:
The sustaining value is lower than the action value of the over-measured product or lower than the action value of the under-measured product, the product should not release. a.
b. The sustaining value should be higher than the action value of the over-measured product or lower than the action value of the under-measured product, the product should not release. Before the test, the action value of the product should be measured under the reference conditions specified in the product standard. 4.5.3 During the test. Products with set values ​​should be set to the most sensitive set value, and the specified excitation or characteristic salt should be applied according to the product standard. The product should be in the action state or the release state during the test. Note: When the test includes a product with multiple sensitivity functions, only the function that is known to be most sensitive to the test shock can be retroactively checked. 4.5.4 During the test, the state of the output circuit (see 5.1.1 Item 1), shall be determined by the monitoring device, which shall be able to measure the duration of the cross-point closing or breaking, and its reset time shall not exceed 0.2ms (with or without relay, it shall not exceed 1s), or a shorter reset time, to prevent the cumulative effect of several short-term events in the output circuit (e.g., defects) from causing the monitoring device to respond (see Appendix A, item A2). 4.5.5 After the test, the impact of the test on the test product shall be checked. 4.6 Test procedure for shock and impact test The shock and impact characteristics shall be measured at the reference points specified in the product standard. During the test, the test product is in the positive working position in the housing with the cover, and no transport restraint shall be applied. Note: If the test product is not suitable for the overall test, it can be tested in sub-components after consultation with the manufacturer and the user: 4.6.1 Test product shock resistance test: Three shocks (a total of 18) shall be applied in each direction of each of the three mutually perpendicular axes (i.e., up, down, left, right, front, and back). 4.6.2 The impact test shall be carried out by applying 1 000 impulses in each direction of each of the three mutually perpendicular lines of the tested product (i.e. up, down, front, back, left and right) (a total of 6 000 pulses). The peak velocity of the collision test shall be selected according to the severity level specified in Table 5. GB/T 14537--93
During the test, if the collision direction to which the tested product is subjected during transportation is known, the specified number of pulses may be applied to that direction.
During the test, no excitation quantity or characteristic quantity is added to the test product for the impact tolerance test and the collision test, and the melting point is not monitored.
4.6.4 After the test, the impact of the impact tolerance test and the collision test on the test product should be checked. 5 Qualification criteria
5.1 Qualification criteria for the impact response test
5.1.1 During the test, the product should not malfunction. If its output circuit changes its normal state for no more than 2m, it is considered to have no malfunction. In the past, the product standard can specify the acceleration value at which the state change does not last longer than 10 μs (see A2 in Appendix A). 5.1.2 The test should not cause the card to drop or other indicators to permanently change to the basic state. 5.1.3 After the test, the product should still meet the relevant performance technical requirements, and its action value should not change by more than 0.5 times the specified error, nor should it be mechanically damaged.
5.2 Qualification criteria for shock and collision tests 5.2.1 The test may cause the card to drop or other indications to change their state. 5.2.2 After the test, the product shall still meet the relevant performance and technical requirements and shall not be damaged. ..comGB/T 14537- 93
Parameters of shock and collision tests and selection principles for output circuit response characteristics when conducting shock response tests
【Supplement】
A1 For shock response tests and collision tests. Some of the selected test parameters are not completely the same as those of IEC682-:27 and 68-229. In order to always be able to make a direct comparison between the severity levels 1 and 2, some test parameter values ​​have been selected in the technical standards. Measuring relays and protective devices may use more devices with very short operating times, such as rectifiers, for which the 2T test requirement may not apply. It is necessary to know the acceleration peak value at which the output circuit changes state without dangerous conditions, so that when the amplitude is given to this value, after the short closure of the contacts caused by the impulse, the load flowing through the output circuit will not be cut off, which would cause a risk of damaging the contacts, for example. At present, for the design of many relays and protective devices, specific recommendations are needed on the acceleration values ​​that do not cause undesirable changes of state. There are not enough data. In order to obtain these data, it is recommended that measuring relays and protective devices be tested in accordance with 4.5, but in accordance with Chapter 37 of IEC 255-7. The change of state of the output circuit is 10 μs as the acceptance criterion, and the test results are published by the manufacturer.
Additional Notes:
This standard was proposed by the Ministry of Machinery and Electronics Industry. This standard was drafted by the National Technical Committee for Standardization of Relays, Relay Protection and Automatic Devices, and was drafted by Xuchang Relay Research Institute and Nanjing Automation Equipment Factory. The main drafters of this standard are Yang Wei, Sun Zhen, Luo Peifang, and Zhu Baoping:..comcomcomThe units and data in brackets are the legal type median and conversion data, which are alternately shown in Table 4 and Table 5.
2) 3 pulses are applied to each axis and 6 pulses are applied to each axis. 4.2.2 Shock and withstand test
This test is applicable to products without interruption. Table 4 lists the shock and withstand test parameters of different severity levels. 4 Impact test parameters for different severity levels Level
Acceleration value A
(gn) n/a
(15) 147
(30) 294
Pulse duration
Note: 1) 3 pulses in each direction correspond to 6 pulses on each axis. 4.3 Impact test severity level
This test is applicable to products without excitation. Number of pulses in each direction
For subsequent tests, this standard includes three different severity levels (0, 1.2), and their main parameters are listed in Table 5 (see item A1 in Appendix A)
When the safety level is declared, no impact test is performed. Table 5 Parameters of collision tests of different severity levels Level
Peak acceleration -4
(gn)m/ss
(10>96
(20>196
Pulse duration D
Note: 1) F: 10) collisions in each direction correspond to 2000 collisions on each axis. 4.4 Principles for selecting the severity level of impact and collision avoidance tests. Number of pulses in each direction
GB/T 14537-93
The severity level of the test corresponds to the ability of the product to withstand the mechanical shocks and collisions that it may experience in individual transportation or use methods and is classified according to Table 6.
Table 6 Principles for selecting test severity levels
Products with high shock and collision requirements
Products under normal transportation and normal transport conditions Applicable occasions
Products with high safety factor requirements, used in occasions with high impact or collision strength (such as above) and suitable for transportation conditions under severe conditions. The packaging design and display of the product should ensure that the severity level parameters will not be exceeded during transportation. 4.5 Test procedure for shock response test
The shock pulse characteristics should be measured at the reference point specified in the product standard. During the test, the product should be in the normal working position in the housing with a cover. Any transport restrictor should be removed. Note: Shrimp fruit products are not convenient for overall testing. After consultation between the manufacturer and the user, they can be tested by functional sub-components. 4. 5. 1 The test piece shall be subjected to 3 pulses in each direction (i.e. up, down, left, right, front and back) on each of the three parallel perpendicular axes (i.e. 18 pulses in total). The peak value of acceleration shall be selected according to the severity level specified in Table 3. 4.5.2 Under the basic push conditions specified in the product standard, the following auxiliary and input excitation values, as well as the output circuit load specified in the product standard, are tested on the product: Auxiliary excitation disk: Rated value: Output circuit load: No load except monitoring instrument or load as specified in the product standard: Input excitation quantity: The action value of the characteristic quantity plus and minus the value specified in the product standard that will not cause malfunction due to impact Variation: For example:
The sustaining value is lower than the action value of the over-measured product or lower than the action value of the under-measured product, the product should not release. a.
b. The sustaining value should be higher than the action value of the over-measured product or lower than the action value of the under-measured product, the product should not release. Before the test, the action value of the product should be measured under the reference conditions specified in the product standard. 4.5.3 During the test. Products with set values ​​should be set to the most sensitive set value, and the specified excitation or characteristic salt should be applied according to the product standard. The product should be in the action state or the release state during the test. Note: When the test includes a product with multiple sensitivity functions, only the function that is known to be most sensitive to the test shock can be retroactively checked. 4.5.4 During the test, the state of the output circuit (see 5.1.1 Item 1), shall be determined by the monitoring device, which shall be able to measure the duration of the cross-point closing or breaking, and its reset time shall not exceed 0.2ms (with or without relay, it shall not exceed 1s), or a shorter reset time, to prevent the cumulative effect of several short-term events in the output circuit (e.g., defects) from causing the monitoring device to respond (see Appendix A, item A2). 4.5.5 After the test, the impact of the test on the test product shall be checked. 4.6 Test procedure for shock and impact test The shock and impact characteristics shall be measured at the reference points specified in the product standard. During the test, the test product is in the positive working position in the housing with the cover, and no transport restraint shall be applied. Note: If the test product is not suitable for the overall test, it can be tested in sub-components after consultation with the manufacturer and the user: 4.6.1 Test product shock resistance test: Three shocks (a total of 18) shall be applied in each direction of each of the three mutually perpendicular axes (i.e., up, down, left, right, front, and back). 4.6.2 The impact test shall be carried out by applying 1 000 impulses in each direction of each of the three mutually perpendicular lines of the tested product (i.e. up, down, front, back, left and right) (a total of 6 000 pulses). The peak velocity of the collision test shall be selected according to the severity level specified in Table 5. GB/T 14537--93
During the test, if the collision direction to which the tested product is subjected during transportation is known, the specified number of pulses may be applied to that direction.
During the test, no excitation quantity or characteristic quantity is added to the test product for the impact tolerance test and the collision test, and the melting point is not monitored.
4.6.4 After the test, the impact of the impact tolerance test and the collision test on the test product should be checked. 5 Qualification criteria
5.1 Qualification criteria for the impact response test
5.1.1 During the test, the product should not malfunction. If its output circuit changes its normal state for no more than 2m, it is considered to have no malfunction. In the past, the product standard can specify the acceleration value at which the state change does not last longer than 10 μs (see A2 in Appendix A). 5.1.2 The test should not cause the card to drop or other indicators to permanently change to the basic state. 5.1.3 After the test, the product should still meet the relevant performance technical requirements, and its action value should not change by more than 0.5 times the specified error, nor should it be mechanically damaged.
5.2 Qualification criteria for shock and collision tests 5.2.1 The test may cause the card to drop or other indications to change their state. 5.2.2 After the test, the product shall still meet the relevant performance and technical requirements and shall not be damaged. ..comGB/T 14537- 93
Parameters of shock and collision tests and selection principles for output circuit response characteristics when conducting shock response tests
【Supplement】
A1 For shock response tests and collision tests. Some of the selected test parameters are different from those of IEC682-:27 and 68-229. In order to always be able to make a direct comparison between the severity levels 1 and 2, some test parameter values ​​have been selected in the technical standards. Measuring relays and protective devices may use more devices with very short operating times, such as rectifiers, for which the 2T test requirement may not apply. It is necessary to know the acceleration peak value at which the output circuit changes state without dangerous changes, so that when the amplitude is given to this value, after the short closure of the contacts caused by the impulse, the load flowing through the output circuit will not be cut off, which would cause a risk of damaging the contacts, for example. At present, for the design of many relays and protective devices, specific recommendations are needed on the acceleration values ​​that do not cause undesirable changes of state. There are not enough data. In order to obtain these data, it is recommended that measuring relays and protective devices be tested in accordance with 4.5, but in accordance with Chapter 37 of IEC 255-7. The change of state of the output circuit is 10 μs as the acceptance criterion, and the test results are published by the manufacturer.
Additional Notes:
This standard was proposed by the Ministry of Machinery and Electronics Industry. This standard was drafted by the National Technical Committee for Standardization of Relays, Relay Protection and Automatic Devices, and was drafted by Xuchang Relay Research Institute and Nanjing Automation Equipment Factory. The main drafters of this standard are Yang Wei, Sun Zhen, Luo Peifang, and Zhu Baoping:..comThe units and data in brackets are the legal type median and conversion data, which are alternately shown in Table 4 and Table 5.
2) 3 pulses are applied to each axis and 6 pulses are applied to each axis. 4.2.2 Shock and withstand test
This test is applicable to products without interruption. Table 4 lists the shock and withstand test parameters of different severity levels. 4 Impact test parameters for different severity levels Level
Acceleration value A
(gn) n/a
(15) 147
(30) 294
Pulse duration
Note: 1) 3 pulses in each direction correspond to 6 pulses on each axis. 4.3 Impact test severity level Www.bzxZ.net
This test is applicable to products without excitation. Number of pulses in each direction
For subsequent tests, this standard includes three different severity levels (0, 1.2), and their main parameters are listed in Table 5 (see item A1 in Appendix A)
When the safety level is declared, no impact test is performed. Table 5 Parameters of collision tests of different severity levels Level
Peak acceleration -4
(gn)m/ss
(10>96
(20>196
Pulse duration D
Note: 1) F: 10) collisions in each direction correspond to 2000 collisions on each axis. 4.4 Principles for selecting the severity level of impact and collision avoidance tests. Number of pulses in each direction
GB/T 14537-93
The severity level of the test corresponds to the ability of the product to withstand the mechanical shocks and collisions that it may experience in individual transportation or use methods and is classified according to Table 6.
Table 6 Principles for selecting test severity levels
Products with high shock and collision requirements
Products under normal transportation and normal transport conditions Applicable occasions
Products with high safety factor requirements, used in occasions with high impact or collision strength (such as above) and suitable for transportation conditions under severe conditions. The packaging design and display of the product should ensure that the severity level parameters will not be exceeded during transportation. 4.5 Test procedure for shock response test
The shock pulse characteristics should be measured at the reference point specified in the product standard. During the test, the product should be in the normal working position in the housing with a cover. Any transport restrictor should be removed. Note: Shrimp fruit products are not convenient for overall testing. After consultation between the manufacturer and the user, they can be tested by functional sub-components. 4. 5. 1 The test piece shall be subjected to 3 pulses in each direction (i.e. up, down, left, right, front and back) on each of the three parallel perpendicular axes (i.e. 18 pulses in total). The peak value of acceleration shall be selected according to the severity level specified in Table 3. 4.5.2 Under the basic push conditions specified in the product standard, the following auxiliary and input excitation values, as well as the output circuit load specified in the product standard, are tested on the product: Auxiliary excitation disk: Rated value: Output circuit load: No load except monitoring instrument or load as specified in the product standard: Input excitation quantity: The action value of the characteristic quantity plus and minus the value specified in the product standard that will not cause malfunction due to impact Variation: For example:
The sustaining value is lower than the action value of the over-measured product or lower than the action value of the under-measured product, the product should not release. a.
b. The sustaining value should be higher than the action value of the over-measured product or lower than the action value of the under-measured product, the product should not release. Before the test, the action value of the product should be measured under the reference conditions specified in the product standard. 4.5.3 During the test. Products with set values ​​should be set to the most sensitive set value, and the specified excitation or characteristic salt should be applied according to the product standard. The product should be in the action state or the release state during the test. Note: When the test includes a product with multiple sensitivity functions, only the function that is known to be most sensitive to the test shock can be retroactively checked. 4.5.4 During the test, the state of the output circuit (see 5.1.1 Item 1), shall be determined by the monitoring device, which shall be able to measure the duration of the cross-point closing or breaking, and its reset time shall not exceed 0.2ms (with or without relay, it shall not exceed 1s), or a shorter reset time, to prevent the cumulative effect of several short-term events in the output circuit (e.g., defects) from causing the monitoring device to respond (see Appendix A, item A2). 4.5.5 After the test, the impact of the test on the test product shall be checked. 4.6 Test procedure for shock and impact test The shock and impact characteristics shall be measured at the reference points specified in the product standard. During the test, the test product is in the positive working position in the housing with the cover, and no transport restraint shall be applied. Note: If the test product is not suitable for the overall test, it can be tested in sub-components after consultation with the manufacturer and the user: 4.6.1 Test product shock resistance test: Three shocks (a total of 18) shall be applied in each direction of each of the three mutually perpendicular axes (i.e., up, down, left, right, front, and back). 4.6.2 The impact test shall be carried out by applying 1 000 impulses in each direction of each of the three mutually perpendicular lines of the tested product (i.e. up, down, front, back, left and right) (a total of 6 000 pulses). The peak velocity of the collision test shall be selected according to the severity level specified in Table 5. GB/T 14537--93
During the test, if the collision direction to which the tested product is subjected during transportation is known, the specified number of pulses may be applied to that direction.
During the test, no excitation quantity or characteristic quantity is added to the test product for the impact tolerance test and the collision test, and the melting point is not monitored.
4.6.4 After the test, the impact of the impact tolerance test and the collision test on the test product should be checked. 5 Qualification criteria
5.1 Qualification criteria for the impact response test
5.1.1 During the test, the product should not malfunction. If its output circuit changes its normal state for no more than 2m, it is considered to have no malfunction. In the past, the product standard can specify the acceleration value at which the state change does not last longer than 10 μs (see A2 in Appendix A). 5.1.2 The test should not cause the card to drop or other indicators to permanently change to the basic state. 5.1.3 After the test, the product should still meet the relevant performance technical requirements, and its action value should not change by more than 0.5 times the specified error, nor should it be mechanically damaged.
5.2 Qualification criteria for shock and collision tests 5.2.1 The test may cause the card to drop or other indications to change their state. 5.2.2 After the test, the product shall still meet the relevant performance and technical requirements and shall not be damaged. ..comGB/T 14537- 93
Parameters of shock and collision tests and selection principles for output circuit response characteristics when conducting shock response tests
【Supplement】
A1 For shock response tests and collision tests. Some of the selected test parameters are different from those of IEC682-:27 and 68-229. In order to always be able to make a direct comparison between the severity levels 1 and 2, some test parameter values ​​have been selected in the technical standards. Measuring relays and protective devices may use more devices with very short operating times, such as rectifiers, for which the 2T test requirement may not apply. It is necessary to know the acceleration peak value at which the output circuit changes state without dangerous changes, so that when the amplitude is given to this value, after the short closure of the contacts caused by the impulse, the load flowing through the output circuit will not be cut off, which would cause a risk of damaging the contacts, for example. At present, for the design of many relays and protective devices, specific recommendations are needed on the acceleration values ​​that do not cause undesirable changes of state. There are not enough data. In order to obtain these data, it is recommended that measuring relays and protective devices be tested in accordance with 4.5, but in accordance with Chapter 37 of IEC 255-7. The change of state of the output circuit is 10 μs as the acceptance criterion, and the test results are published by the manufacturer.
Additional Notes:
This standard was proposed by the Ministry of Machinery and Electronics Industry. This standard was drafted by the National Technical Committee for Standardization of Relays, Relay Protection and Automatic Devices, and was drafted by Xuchang Relay Research Institute and Nanjing Automation Equipment Factory. The main drafters of this standard are Yang Wei, Sun Zhen, Luo Peifang, and Zhu Baoping:..comTable 4 lists the impact test parameters for different severity levels. 4 Impact test parameters for different severity levels Level
Acceleration value A
(gn) n/a
(15) 147
(30) 294
Pulse duration
Note: 1) 3 pulses in each direction correspond to 6 pulses on each axis. 4.3 Impact test severity level
This test is applicable to products without excitation. Number of pulses in each direction
For subsequent tests, this standard includes three different severity levels (0, 1.2), and their main parameters are listed in Table 5 (see item A1 in Appendix A).
When the level is declared, no impact test is performed. Table 5 Parameters of collision tests of different severity levels Level
Peak acceleration -4
(gn)m/ss
(10>96
(20>196
Pulse duration D
Note: 1) F: 10) collisions in each direction correspond to 2000 collisions on each axis. 4.4 Principles for selecting the severity level of impact and collision avoidance tests. Number of pulses in each direction
GB/T 14537-93
The severity level of the test corresponds to the ability of the product to withstand the mechanical shocks and collisions that it may experience in individual transportation or use methods and is classified according to Table 6.
Table 6 Principles for selecting test severity levels
Products with high shock and collision requirements
Products under normal transportation and normal transport conditions Applicable occasions
Products with high safety factor requirements, used in occasions with high impact or collision strength (such as above) and suitable for transportation conditions under severe conditions. The packaging design and display of the product should ensure that the severity level parameters will not be exceeded during transportation. 4.5 Test procedure for shock response test
The shock pulse characteristics should be measured at the reference point specified in the product standard. During the test, the product should be in the normal working position in the housing with a cover. Any transport restrictor should be removed. Note: Shrimp fruit products are not convenient for overall testing. After consultation between the manufacturer and the user, they can be tested by functional sub-components. 4. 5. 1 The test piece shall be subjected to 3 pulses in each direction (i.e. up, down, left, right, front and back) on each of the three parallel perpendicular axes (i.e. 18 pulses in total). The peak value of acceleration shall be selected according to the severity level specified in Table 3. 4.5.2 Under the basic push conditions specified in the product standard, the following auxiliary and input excitation values, as well as the output circuit load specified in the product standard, are tested on the product: Auxiliary excitation disk: Rated value: Output circuit load: No load except monitoring instrument or load as specified in the product standard: Input excitation quantity: The action value of the characteristic quantity plus and minus the value specified in the product standard that will not cause malfunction due to impact Variation: For example:
The sustaining value is lower than the action value of the over-measured product or lower than the action value of the under-measured product, the product should not release. a.
b. The sustaining value should be higher than the action value of the over-measured product or lower than the action value of the under-measured product, the product should not release. Before the test, the action value of the product should be measured under the reference conditions specified in the product standard. 4.5.3 During the test. Products with set values ​​should be set to the most sensitive set value, and the specified excitation or characteristic salt should be applied according to the product standard. The product should be in the action state or the release state during the test. Note: When the test includes a product with multiple sensitivity functions, only the function that is known to be most sensitive to the test shock can be retroactively checked. 4.5.4 During the test, the state of the output circuit (see 5.1.1 Item 1), shall be determined by the monitoring device, which shall be able to measure the duration of the cross-point closing or breaking, and its reset time shall not exceed 0.2ms (with or without relay, it shall not exceed 1s), or a shorter reset time, to prevent the cumulative effect of several short-term events in the output circuit (e.g., defects) from causing the monitoring device to respond (see Appendix A, item A2). 4.5.5 After the test, the impact of the test on the test product shall be checked. 4.6 Test procedure for shock and impact test The shock and impact characteristics shall be measured at the reference points specified in the product standard. During the test, the test product is in the positive working position in the housing with the cover, and no transport restraint shall be applied. Note: If the test product is not suitable for the overall test, it can be tested in sub-components after consultation with the manufacturer and the user: 4.6.1 Test product shock resistance test: Three shocks (a total of 18) shall be applied in each direction of each of the three mutually perpendicular axes (i.e., up, down, left, right, front, and back). 4.6.2 The impact test shall be carried out by applying 1 000 impulses in each direction of each of the three mutually perpendicular lines of the tested product (i.e. up, down, front, back, left and right) (a total of 6 000 pulses). The peak velocity of the collision test shall be selected according to the severity level specified in Table 5. GB/T 14537--93
During the test, if the collision direction to which the tested product is subjected during transportation is known, the specified number of pulses may be applied to that direction.
During the test, no excitation quantity or characteristic quantity is added to the test product for the impact tolerance test and the collision test, and the melting point is not monitored.
4.6.4 After the test, the impact of the impact tolerance test and the collision test on the test product should be checked. 5 Qualification criteria
5.1 Qualification criteria for the impact response test
5.1.1 During the test, the product should not malfunction. If its output circuit changes its normal state for no more than 2m, it is considered to have no malfunction. In the past, the product standard can specify the acceleration value at which the state change does not last longer than 10 μs (see A2 in Appendix A). 5.1.2 The test should not cause the card to drop or other indicators to permanently change to the basic state. 5.1.3 After the test, the product should still meet the relevant performance technical requirements, and its action value should not change by more than 0.5 times the specified error, nor should it be mechanically damaged.
5.2 Qualification criteria for shock and collision tests 5.2.1 The test may cause the card to drop or other indications to change their state. 5.2.2 After the test, the product shall still meet the relevant performance and technical requirements and shall not be damaged. ..comGB/T 14537- 93
Parameters of shock and collision tests and selection principles for output circuit response characteristics when conducting shock response tests
【Supplement】
A1 For shock response tests and collision tests. Some of the selected test parameters are different from those of IEC682-:27 and 68-229. In order to always be able to make a direct comparison between the severity levels 1 and 2, some test parameter values ​​have been selected in the technical standards. Measuring relays and protective devices may use more devices with very short operating times, such as rectifiers, for which the 2T test requirement may not apply. It is necessary to know the acceleration peak value at which the output circuit changes state without dangerous changes, so that when the amplitude is given to this value, after the short closure of the contacts caused by the impulse, the load flowing through the output circuit will not be cut off, which would cause a risk of damaging the contacts, for example. At present, for the design of many relays and protective devices, specific recommendations are needed on the acceleration values ​​that do not cause undesirable changes of state. There are not enough data. In order to obtain these data, it is recommended that measuring relays and protective devices be tested in accordance with 4.5, but in accordance with Chapter 37 of IEC 255-7. The change of state of the output circuit is 10 μs as the acceptance criterion, and the test results are published by the manufacturer.
Additional Notes:
This standard was proposed by the Ministry of Machinery and Electronics Industry. This standard was drafted by the National Technical Committee for Standardization of Relays, Relay Protection and Automatic Devices, and was drafted by Xuchang Relay Research Institute and Nanjing Automation Equipment Factory. The main drafters of this standard are Yang Wei, Sun Zhen, Luo Peifang, and Zhu Baoping:..comTable 4 lists the impact test parameters for different severity levels. 4 Impact test parameters for different severity levels Level
Acceleration value A
(gn) n/a
(15) 147
(30) 294
Pulse duration
Note: 1) 3 pulses in each direction correspond to 6 pulses on each axis. 4.3 Impact test severity level
This test is applicable to products without excitation. Number of pulses in each direction
For subsequent tests, this standard includes three different severity levels (0, 1.2), and their main parameters are listed in Table 5 (see item A1 in Appendix A).
When the level is declared, no impact test is performed. Table 5 Parameters of collision tests of different severity levels Level
Peak acceleration -4
(gn)m/ss
(10>96
(20>196
Pulse duration D
Note: 1) F: 10) collisions in each direction correspond to 2000 collisions on each axis. 4.4 Principles for selecting the severity level of impact and collision avoidance tests. Number of pulses in each direction
GB/T 14537-93
The severity level of the test corresponds to the ability of the product to withstand the mechanical shocks and collisions that it may experience in individual transportation or use methods and is classified according to Table 6.
Table 6 Principles for selecting test severity levels
Products with high shock and collision requirements
Products under normal transportation and normal transport conditions Applicable occasions
Products with high safety factor requirements, used in occasions with high impact or collision strength (such as above) and suitable for transportation conditions under severe conditions. The packaging design and display of the product should ensure that the severity level parameters will not be exceeded during transportation. 4.5 Test procedure for shock response test
The shock pulse characteristics should be measured at the reference point specified in the product standard. During the test, the product should be in the normal working position in the housing with a cover. Any transport restrictor should be removed. Note: Shrimp fruit products are not convenient for overall testing. After consultation between the manufacturer and the user, they can be tested by functional sub-components. 4. 5. 1 The test piece shall be subjected to 3 pulses in each direction (i.e. up, down, left, right, front and back) on each of the three parallel perpendicular axes (i.e. 18 pulses in total). The peak value of acceleration shall be selected according to the severity level specified in Table 3. 4.5.2 Under the basic push conditions specified in the product standard, the following auxiliary and input excitation values, as well as the output circuit load specified in the product standard, are tested on the product: Auxiliary excitation disk: Rated value: Output circuit load: No load except monitoring instrument or load as specified in the product standard: Input excitation quantity: The action value of the characteristic quantity plus and minus the value specified in the product standard that will not cause malfunction due to impact Variation: For example:
The sustaining value is lower than the action value of the over-measured product or lower than the action value of the under-measured product, the product should not release. a.
b. The sustaining value should be higher than the action value of the over-measured product or lower than the action value of the under-measured product, the product should not release. Before the test, the action value of the product should be measured under the reference conditions specified in the product standard. 4.5.3 During the test. Products with set values ​​should be set to the most sensitive set value, and the specified excitation or characteristic salt should be applied according to the product standard. The product should be in the action state or the release state during the test. Note: When the test includes a product with multiple sensitivity functions, only the function that is known to be most sensitive to the test shock can be retroactively checked. 4.5.4 During the test, the state of the output circuit (see 5.1.1 Item 1), shall be determined by the monitoring device, which shall be able to measure the duration of the cross-point closing or breaking, and its reset time shall not exceed 0.2ms (with or without relay, it shall not exceed 1s), or a shorter reset time, to prevent the cumulative effect of several short-term events in the output circuit (e.g., defects) from causing the monitoring device to respond (see Appendix A, item A2). 4.5.5 After the test, the impact of the test on the test product shall be checked. 4.6 Test procedure for shock and impact test The shock and impact characteristics shall be measured at the reference points specified in the product standard. During the test, the test product is in the positive working position in the housing with the cover, and no transport restraint shall be applied. Note: If the test product is not suitable for the overall test, it can be tested in sub-components after consultation with the manufacturer and the user: 4.6.1 Test product shock resistance test: Three shocks (a total of 18) shall be applied in each direction of each of the three mutually perpendicular axes (i.e., up, down, left, right, front, and back). 4.6.2 The impact test shall be carried out by applying 1 000 impulses in each direction of each of the three mutually perpendicular lines of the tested product (i.e. up, down, front, back, left and right) (a total of 6 000 pulses). The peak velocity of the collision test shall be selected according to the severity level specified in Table 5. GB/T 14537--93
During the test, if the collision direction to which the tested product is subjected during transportation is known, the specified number of pulses may be applied to that direction.
During the test, no excitation quantity or characteristic quantity is added to the test product for the impact tolerance test and the collision test, and the melting point is not monitored.
4.6.4 After the test, the impact of the impact tolerance test and the collision test on the test product should be checked. 5 Qualification criteria
5.1 Qualification criteria for the impact response test
5.1.1 During the test, the product should not malfunction. If its output circuit changes its normal state for no more than 2m, it is considered to have no malfunction. In the past, the product standard can specify the acceleration value at which the state change does not last longer than 10 μs (see A2 in Appendix A). 5.1.2 The test should not cause the card to drop or other indicators to permanently change to the basic state. 5.1.3 After the test, the product should still meet the relevant performance technical requirements, and its action value should not change by more than 0.5 times the specified error, nor should it be mechanically damaged.
5.2 Qualification criteria for shock and collision tests 5.2.1 The test may cause the card to drop or other indications to change their state. 5.2.2 After the test, the product shall still meet the relevant performance and technical requirements and shall not be damaged. ..comGB/T 14537- 93
Parameters of shock and collision tests and selection principles for output circuit response characteristics when conducting shock response tests
【Supplement】
A1 For shock response tests and collision tests. Some of the selected test parameters are different from those of IEC682-:27 and 68-229. In order to always be able to make a direct comparison between the severity levels 1 and 2, some test parameter values ​​have been selected in the technical standards. Measuring relays and protective devices may use more devices with very short operating times, such as rectifiers, for which the 2T test requirement may not apply. It is necessary to know the acceleration peak value at which the output circuit changes state without dangerous changes, so that when the amplitude is given to this value, after the short closure of the contacts caused by the impulse, the load flowing through the output circuit will not be cut off, which would cause a risk of damaging the contacts, for example. At present, for the design of many relays and protective devices, specific recommendations are needed on the acceleration values ​​that do not cause undesirable changes of state. There are not enough data. In order to obtain these data, it is recommended that measuring relays and protective devices be tested in accordance with 4.5, but in accordance with Chapter 37 of IEC 255-7. The change of state of the output circuit is 10 μs as the acceptance criterion, and the test results are published by the manufacturer.
Additional Notes:
This standard was proposed by the Ministry of Machinery and Electronics Industry. This standard was drafted by the National Technical Committee for Standardization of Relays, Relay Protection and Automatic Devices, and was drafted by Xuchang Relay Research Institute and Nanjing Automation Equipment Factory. The main drafters of this standard are Yang Wei, Sun Zhen, Luo Peifang, and Zhu Baoping:..com4 Principles for selecting the severity level of impact and collision avoidance tests. Number of pulses in each direction
GB/T 14537-93
The severity level of the test corresponds to the ability of the product to withstand mechanical impact and collision that may be experienced in individual transportation or use methods, and is classified according to Table 6.
Table 6 Principles for selecting the severity level of the test
Products with high requirements for mechanical impact and collision
Products under normal transportation and normal transportation conditions Applicable occasions
Products with high safety requirements, used in occasions with high impact or collision intensity (such as above) and suitable for transportation conditions under bad conditions The packaging design and display of the product should ensure that the severity level parameters will not be exceeded during transportation. 4.5 Test procedure for shock response test
The shock pulse characteristics should be measured at the reference points specified in the product standard. During the test, the product should be in the normal working position in the housing with a cover. Any transportation restraints should be removed. Note: It is not convenient to test the shrimp fruit product as a whole. After consultation between the manufacturer and the user, it can be tested according to functional sub-assemblies. 4.5.1 The test product should be subjected to 3 pulses in each direction (i.e. up, down, left, right, front and back) on each of the three parallel and perpendicular axes (a total of 18 pulses). The peak value of acceleration should be selected according to the severity level specified in Table 3. 4.5.2 Under the basic push conditions specified in the product standard, the following auxiliary and input excitation values, as well as the output circuit load specified in the product standard, are tested on the product: Auxiliary excitation disk: Rated value: Output circuit load: No load except monitoring instruments or load as specified in the product standard: Input excitation quantity: The action value of the characteristic quantity plus and minus the value specified in the product standard that will not cause malfunction due to impact Variation: For example:
The sustaining value is lower than the action value of the over-measured product or lower than the action value of the under-measured product, the product should not release. a.
b. The sustaining value should be higher than the action value of the over-measured product or lower than the action value of the under-measured product, the product should not release. Before the test, the action value of the product should be measured under the reference conditions specified in the product standard. 4.5.3 During the test. Products with set values ​​should be set to the most sensitive set value, and the specified excitation or characteristic salt should be applied according to the product standard. The product should be in the action state or the release state during the test. Note: When the test includes a product with multiple sensitivity functions, only the function that is known to be most sensitive to the test shock can be retroactively checked. 4.5.4 During the test, the state of the output circuit (see 5.1.1 Item 1), shall be determined by the monitoring device, which shall be able to measure the duration of the cross-point closing or breaking, and its reset time shall not exceed 0.2ms (with or without relay, it shall not exceed 1s), or a shorter reset time, to prevent the cumulative effect of several short-term events in the output circuit (e.g., defects) from causing the monitoring device to respond (see Appendix A, item A2). 4.5.5 After the test, the impact of the test on the test product shall be checked. 4.6 Test procedure for shock and impact test The shock and impact characteristics shall be measured at the reference points specified in the product standard. During the test, the test product is in the positive working position in the housing with the cover, and no transport restraint shall be applied. Note: If the test product is not suitable for the overall test, it can be tested in sub-components after consultation with the manufacturer and the user: 4.6.1 Test product shock resistance test: Three shocks (a total of 18) shall be applied in each direction of each of the three mutually perpendicular axes (i.e., up, down, left, right, front, and back). 4.6.2 The impact test shall be carried out by applying 1 000 impulses in each direction of each of the three mutually perpendicular lines of the tested product (i.e. up, down, front, back, left and right) (a total of 6 000 pulses). The peak velocity of the collision test shall be selected according to the severity level specified in Table 5. GB/T 14537--93
During the test, if the collision direction to which the tested product is subjected during transportation is known, the specified number of pulses may be applied to that direction.
During the test, no excitation quantity or characteristic quantity is added to the test product for the impact tolerance test and the collision test, and the melting point is not monitored.
4.6.4 After the test, the impact of the impact tolerance test and the collision test on the test product should be checked. 5 Qualification criteria
5.1 Qualification criteria for the impact response test
5.1.1 During the test, the product should not malfunction. If its output circuit changes its normal state for no more than 2m, it is considered to have no malfunction. In the past, the product standard can specify the acceleration value at which the state change does not last longer than 10 μs (see A2 in Appendix A). 5.1.2 The test should not cause the card to drop or other indicators to permanently change to the basic state. 5.1.3 After the test, the product should still meet the relevant performance technical requirements, and its action value should not change by more than 0.5 times the specified error, nor should it be mechanically damaged.
5.2 Qualification criteria for shock and collision tests 5.2.1 The test may cause the card to drop or other indications to change their state. 5.2.2 After the test, the product shall still meet the relevant performance and technical requirements and shall not be damaged. ..comGB/T 14537- 93
Parameters of shock and collision tests and selection principles for output circuit response characteristics when conducting shock response tests
【Supplement】
A1 For shock response tests and collision tests. Some of the selected test parameters are different from those of IEC682-:27 and 68-229. In order to always be able to make a direct comparison between the severity levels 1 and 2, some test parameter values ​​have been selected in the technical standards. Measuring relays and protective devices may use more devices with very short operating times, such as rectifiers, for which the 2T test requirement may not apply. It is necessary to know the acceleration peak value at which the output circuit changes state without dangerous changes, so that when the amplitude is given to this value, after the short closure of the contacts caused by the impulse, the load flowing through the output circuit will not be cut off, which would cause a risk of damaging the contacts, for example. At present, for the design of many relays and protective devices, specific recommendations are needed on the acceleration values ​​that do not cause undesirable changes of state. There are not enough data. In order to obtain these data, it is recommended that measuring relays and protective devices be tested in accordance with 4.5, but in accordance with Chapter 37 of IEC 255-7. The change of state of the output circuit is 10 μs as the acceptance criterion, and the test results are published by the manufacturer.
Additional Notes:
This standard was proposed by the Ministry of Machinery and Electronics Industry. This standard was drafted by the National Technical Committee for Standardization of Relays, Relay Protection and Automatic Devices, and was drafted by Xuchang Relay Research Institute and Nanjing Automation Equipment Factory. The main drafters of this standard are Yang Wei, Sun Zhen, Luo Peifang, and Zhu Baoping:..com4 Principles for selecting the severity level of impact and collision avoidance tests. Number of pulses in each direction
GB/T 14537-93
The severity level of the test corresponds to the ability of the product to withstand mechanical impact and collision that may be experienced in individual transportation or use methods, and is classified according to Table 6.
Table 6 Principles for selecting the severity level of the test
Products with high requirements for mechanical impact and collision
Products under normal transportation and normal transportation conditions Applicable occasions
Products with high safety requirements, used in occasions with high impact or collision intensity (such as above) and suitable for transportation conditions under bad conditions The packaging design and display of the product should ensure that the severity level parameters will not be exceeded during transportation. 4.5 Test procedure for shock response test
The shock pulse characteristics should be measured at the reference points specified in the product standard. During the test, the product should be in the normal working position in the housing with a cover. Any transportation restraints should be removed. Note: It is not convenient to test the shrimp fruit product as a whole. After consultation between the manufacturer and the user, it can be tested accordin
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