The test methods specified in this standard shall be adopted when the detailed specifications of electromechanical components for electronic equipment within the scope of TC48 are required. They may also be adopted when the detailed specifications of similar components are required. GB/T 5095.5-1997 Basic test procedures and measurement methods for electromechanical components for electronic equipment Part 5: Impact test (free components), static load test (fixed components), life test and overload test GB/T5095.5-1997 Standard download decompression password: www.bzxz.net

ICS.31.220
National Standard of the People's Republic of China
GB/T5095.1～5095.9-1997
idt IEC 512---1~512—9
Electromechanical components for electronic equipmentBasic testing procedures and measuring methods1997-12-26Promulgated
1998-10-01Implementation
GB/T5095.5-1997
This standard is equivalent to IEC512-5:1992 "Basic testing procedures and measuring methods for electromechanical components for electronic equipment Part 5: Impact test (free components), static load test (fixed components), life test and overload test", which is the th revision of GB5095.586.
This standard is proposed by the Ministry of Electronics Industry of the People's Republic of China. This standard is under the jurisdiction of the National Technical Committee for Standardization of Electromechanical Components for Electronic Equipment. This standard was drafted by the Standardization Institute of the Ministry of Electronics Industry. The main drafters of this standard are: Yu Yufang, Wang Qilong, Zhang Juhua, Wang Yutang. 39
GB/T5095.5-1997
IEC Foreword
1) Formal resolutions or agreements of the IEC (International Electrotechnical Commission) on technical issues are formulated by technical committees participated in by national committees with special concerns about these issues, and represent the international consensus on the issues involved as much as possible. 2) These resolutions or agreements are published in the form of standards, technical reports or guidelines, and are recommended for international use, and in this sense, are recognized by the national committees.
3) In order to promote international unification, each IEC National Committee has the responsibility to adopt IEC standards as much as possible in its national and regional standards. Any differences between IEC standards and corresponding national or regional standards should be indicated in the national or regional standards. The international standard IEC512-4 was developed by IEC/TC48 (electromechanical components and mechanical structures for electronic equipment). The second edition of this standard replaces the first edition published in 1977 and its first supplement IEC512-5A (1980) and its amendment 1 (1987) and the second supplement IEC512-5B (1981). This standard is used together with Part 1: General (IEC512-1: 1984). The other test items included in the whole set of standards are given in Appendix A of IEC512-1. These test items are published after they are developed.
This standard is scheduled to replace the corresponding test items in IEC130-1 "Part 1: General requirements and test methods for connectors with frequencies below 3MHz".
The text of this standard is based on the first edition of IEC512-5 (1977), the first supplement IEC512-5A (1980) and its amendment 1 (1987), the second supplement IEC512-5B (1981) and the following documents: DIS
48(CO)302
48(CO)314
Voting ReportWww.bzxZ.net
48(CO)308
48(CO)324
Detailed information on voting and approval of this standard can be found in the voting reports listed in the table above. 40
0.1Scope
National Standard of the People's Republic of China
Electromechanical components for electronic equipment
Basic testing procedures and measuring methods
Part 5: Impact tests (free components), static load tests (fixed components),
Life tests and overload tests
Part 0
GB/T 5095.5-1997
idt IEC 512-5:1992
Replaces GB 5095.5—86
The test methods specified in this standard shall be adopted when detailed specifications for electromechanical components for electronic equipment are required within the scope of TC 48. It can also be used when detailed specifications of similar components are required. 0.2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T5095.1--1997 Basic test procedures and measurement methods for electromechanical components for electronic equipment Part 1: General (idtIEC5122:1984)
IEC65:1985 Safety requirements for household and similar general purpose electronic and related equipment powered by mains IEC68-2-13:1983 Environmental testing procedures Part 2: Test 1 Test M: Low pressure test IEC130-1:1988 Connectors with frequencies below 3MHz-Part 1: General requirements and measurement methods *TC48's model: International standards for related components with electromechanical connection and switching functions for communication equipment and electronic devices using similar technologies.
1 R.F. connectors shall not belong to this technical committee and shall be developed by TC46 and RF Cable. 2 Sockets for components such as crystals or electron tubes shall be considered by the relevant technical committee. Approved by the State Administration of Technical Supervision on December 26, 1997 and implemented on October 1, 1998
1 Test 7a: Repeated free fall
1.1 Purpose
GB/T5095.5—1997
Part 1 Impact test (free component)
is to establish a detailed standard test method to assess the ability of components to withstand impact when repeatedly dropped. 1.2 Preparation of test samples
Unless otherwise specified, the test samples shall not be installed or wired, but shall be equipped with the usual accessories as specified in the detailed specification. 1.3 Test method
The test sample shall be tested in the roller shown in Figure 1. The roller rotation speed is about 5r/min. The total number of rotations (number of drops) shall be as specified in the detailed specification. Note: When IEC65 is applicable, the test specimen weight shall be rotated 50 times for specimens weighing up to 250 g and 25 times for specimens weighing more than 250 g. Thickness of steel plate 3 mm
Nominal dimension unit; mm
Figure 1 Roller
1.4 Final test
The test specimen shall be visually inspected as specified in test 1a. If required by the detailed specification, the operational performance of the test specimen shall also be checked. 1.5 Requirements
Parts shall be free from cracks or damage that would impede normal operation. 1.6 Details to be specified
Detailed specification requirements The following details shall be specified for this test: a) Preparation of test specimens;
b) Accessories to be fitted (if applicable); c) Total number of rotations (number of drops);
d) Operating requirements;
e) Any differences from the standard test method. 42
2 Test 7b: Mechanical strong impact
2.1 Purpose
GB/T5095.5-1997
is to establish a detailed standard test method to evaluate the ability of electromechanical components at the end of cables or wire harnesses to withstand impact when they fall on a hard surface.
2.2 Preparation of test samples
The test sample should be a free connector or similar component, assembled with accessories in the normal way, and wired as in normal use. If a component is usually available for different types of cables, the thinnest and/or softest cable should be used. The cable length from the tail of the test sample to the cable or wire harness attachment point is allowed to be 2250mm±10mm. 2.3 Test method
Hang the test sample at a distance of 2250mm±10mm from the tail by appropriate means, so that the test sample can swing freely from the horizontal position to the vertical position, as shown in Figure 2.
Note: A suitable method may be to hang it on a rotating joint. However, in most cases, simply hanging it on a hook will suffice. 2250mm
Figure 2 Impact test
The preferred height of the hanging test sample is one of the following: 2000mm±10mm
1750mm±10mm
1500mm±10mm
1250mm±10mm
1000mm±10mm
750mm±10mm
500mm±10mm
Put a 300mm×500mm steel plate with a thickness of 25mm on it so that the test sample under test falls on the steel plate. The test sample hung at the specified height is lifted to a horizontal position in the specified posture, and then released and falls on the steel plate. This cycle shall be repeated to the total number of times specified in the detailed specification.
2.4 Test requirements
The components shall be visually inspected. The components shall not be damaged and shall not have any damage that is harmful to operation. 5 Details to be specified
GB/T5095.5—1997
Detailed specification requirements The following details shall be specified for this test: a) Preparation of test specimens;
b) Type of accessories (when required);
c) Cable or wire to be used;
d) Different heights from which the component is dropped;
e) Number of drop cycles at each height;
f) Test items to be operated;
g) State of the test specimen;
h) Differences from the standard test method. Part II Static load test (fixed components) 3 Test 8a: Transverse static load
3.1 Purpose
To establish a detailed standard test method to assess the suitability of fixed components when they may be subjected to transverse stresses. 3.2 Preparation of test specimens
The test specimen shall not be wired, but accessories required by the detailed specification shall be assembled. Unless otherwise specified, the test specimen shall be mounted in the usual manner, using the normal panel or frame openings as specified in the detail specification. NOTE The panel shall be of sufficient strength to withstand the applied forces. The length and width of the panel shall extend beyond the periphery of the test specimen. 3.3 Test method
The specified force shall be applied to the test specimen at the point and in the direction specified in the detail specification. This force shall be increased steadily to the specified value and maintained for 1 min. The applied force shall be parallel to the mounting panel. 3.4 Final test
a) Visual inspection (test la);
b) Relevant operating characteristics;
c) Seals (test 14), if applicable.
3.5. Requirements
There shall be no damage which would prevent normal operation.
3.6 Details to be Specified
Detailed Specification Requirements The following details shall be specified for this test: a) Mounting of the test specimen, including the dimensions of the panel opening; b) Type of attachment (if required);
c) Magnitude of force;
d) Location, direction, rate and duration of force application; e) Form of tool and fixture for applying force; ) Final test requirements;
g) Any deviation from the standard test method. 4 Test 8b: Axial Static Load
4.1 Purpose
To establish a detailed standard test method for evaluating the ability of components to withstand axial static loads that may be sustained in normal use. 4.2 Test Specimen Preparation
The test specimen shall be securely mounted on a metal plate using normal fastening devices. The dimensions (length and width) of the mounting plate shall extend 44
outside the test specimen.
4.3 Test method
GB/T5095.5-1997
Apply the specified force to the test sample at the point and direction specified in the detailed specification. The force should be steadily increased to the specified value and maintained for 1 minute. The applied force should be perpendicular to the mounting panel. 4.4 Final inspection
a) Visual inspection (test la);
b) Relevant operating characteristics;
c) Sealing (test 14), if applicable. 4.5 Requirements
There should be no damage that prevents normal operation.
4.6 Details to be Specified
Detailed Specification Requirements The following details shall be specified for this test: a) The mounting of the test specimen, including the dimensions of the panel opening; b) The type of accessory (if required);
c) The shape of the fixture or tool for applying the force, if necessary; d) The force to be applied, the point of application, direction, rate and duration of the force; e) The final test to be performed;
f) Any deviation from the standard test method. 5 Test 8c: Strength of operating levers
5.1 Purpose
To establish a detailed standard test method to evaluate the strength of the operating lever or connector release mechanism of a toggle switch. 5.2 Test specimens
The test specimen shall be securely mounted on a metal plate using normal fastening means. The dimensions (length and width) of the mounting plate shall extend beyond the periphery of the test specimen.
5.3 Test method
The specified force shall be applied to the top of the operating lever for 1 min. The force shall be applied in each of the following directions (see Figure 3). .In the plane of motion of the operating lever, perpendicular to the axis of the lever, apply the same force at each end position of the operating lever;-perpendicular to the plane of motion of the operating lever, also perpendicular to the axis of the operating lever, apply the same force at each end position of the operating lever,
-along the axis of the operating lever, apply the force towards the supporting point of the operating lever; along the axis of the operating lever, apply the force away from the supporting point of the operating lever. The applied force shall be steadily increased at a rate of about 20N/s to reach the specified value and maintained for 1min. 45
5.3.2 Torque
GB/T5095.5-1997
Figure 3 Force application method
The specified torque shall be applied in both the positive and negative directions around the axis of the operating lever, and each shall be maintained for 1min. 5.4 Final inspection
a) Visual inspection (test la);
b) Operating characteristics;
c) Sealing (test 14), if applicable. 5.5 Requirements
There should be no damage that would prevent normal operation.
5.6 Details to be Specified
Detailed Specification Requirements The following details shall be specified for this test: a) Installation details, including panel opening dimensions; b) The shape of the fixture or tool used to apply force or torque; c) The magnitude, direction and rate of the applied force or torque; d) Requirements for final inspection;
e) Any differences from the standard test method. Part III Life Tests
6 Test 9a: Mechanical Operation
6.1 Purpose
To establish a detailed standard test method to assess the mechanical operation durability of electromechanical components when operated in a normal manner without electrical load. 6.2 Test Sample Preparation
GB/T5095.5—1997
The test samples shall be prepared and installed in accordance with the provisions of the detailed specification. 6.3 Test methods
The test specimens shall be subjected to a mechanical operating endurance test (without electrical load) in accordance with the requirements of the detail specification. The test specimens shall be operated in the normal manner, and the frequency, number and speed of operation shall be as specified in the detail specification. Mechanical auxiliary equipment simulating normal operation may be used, except where prohibited by the detail specification, but abnormal stresses shall be prevented. 6.4 Final tests
a) Visual inspection (test la);
b) Contact resistance (test 2, if applicable); c) Electrical continuity of the housing (test 2f);
d) Insulation resistance (test 3a);
e) Withstand voltage (test 4a);
f) Mechanical operating characteristics, including the effectiveness of keys and detents (test 13e); g) Sealing (test 14), if applicable.
6.5 Details to be specified
Detailed specification requirements The following details shall be specified for this test: a) Preparation of test specimens, including the type of cable or wiring harness used; b) Installation of test specimens;
c) Frequency, speed and number of operations;
d) Requirements for final inspection;
e) Any differences from the standard test method. 7 Test 9b: Electrical load and temperature
7.1 Purpose
To establish a detailed standard test method to assess the ability of electromechanical components to withstand the temperature rise caused by electrical load. 7.2 Preparation of test specimens
The test specimens shall be equipped with appropriate temperature sensing devices and wired and installed as required by the detailed specification. Note: In this case, the use of horizontal wiring can often improve the reproducibility of the test. 7.3 Test method
7.3.1 The test specimens shall be subjected to the temperature endurance test with load as required by the detailed specification. 7.3.2 The prepared test sample shall be placed in the test chamber, and the chamber shall be maintained at 70%±5% of the maximum operating temperature specified for the test sample.
7.3.3 Let the test sample pass the current and increase it slowly until it approaches the specified maximum operating temperature. Do not blindly increase the current too quickly before reaching thermal equilibrium each time. When adjusting, it is never allowed to exceed the specified maximum operating temperature or the current value specified for the test sample. When the maximum operating temperature is reached, the current that reaches this temperature shall be maintained until the end of the test. 7.3.4 If the maximum operating temperature of the test sample exceeds 5% under normal test conditions, the test shall be terminated and the test shall be considered "invalid"
7.3.5 If the temperature rise caused by the test sample passing the specified maximum current does not reach the maximum operating temperature specified for the test sample, then the chamber temperature shall be increased until the maximum operating temperature of the test sample is reached. 7.3.6 The test shall be carried out according to the maximum operating temperature and test duration specified in the detailed specification. The preferred duration is: 250h.500h, 1000h.2000h.
7.3.7 After the initial 10 h and at the end of the test, the insulation resistance measured at elevated temperature as specified in test 3a shall not be less than the value specified in the detail specification.
7.3.8 At the end of the test time, the test specimen shall be left to cool under the test standard atmospheric conditions for the time specified in the detail specification. 47
7.4 Final test
a) Contact resistance (test 2b);
GB/T5095.5—1997
b) Electrical continuity of enclosure (test 2f) (if applicable); c) Insulation resistance (test 3a);
d) Withstand voltage (test 4a);
e) Visual inspection (test la);
f) Operation test;
g) Sealing (test 14), if applicable. 7.5 Details to be specified
Requirements of the detailed specification The following details shall be specified for this test: a) Preparation of test specimens, including conductor type, size and location of temperature sensing devices; b) Mounting of test specimens;
c) Maximum operating temperature;
d) Duration of test;
e) Maximum load current;
f) Insulation resistance (at elevated temperature);
g) Recovery time before final test;
h) Requirements for final test;
i) Any differences from the standard test method. 8 Test 9c: Mechanical operation with electrical load
8.1 Purpose
To establish a detailed standard test method to evaluate the endurance of mechanical and electrical operation of electromechanical components in normal operating conditions with specified electrical loads.
8.2 Preparation of test specimens
The test specimens shall be prepared and mounted as specified in the detailed specification. 8.3 Test method
The test specimens shall be subjected to the endurance test of electrical and mechanical operation as specified in the detail specification. The test specimens shall be connected and disconnected in accordance with the normal operation method of the current load specified in the detail specification. The type of load, the current value, the ac or dc voltage and frequency, and the speed and number of operations shall be specified in the detail specification. This test may be required to be carried out at low pressure. The atmospheric pressure conditions shall be as specified in IEC68-2-13 and the severity level shall be as specified in the detail specification.
Mechanical auxiliary equipment simulating normal operation may be used, but abnormal stresses shall be prevented unless otherwise specified in the detail specification. 8.3.1 Resistive loads (ac or dc voltage) shall be tested at the specified ac or dc current and open-circuit voltage values. The operating cycle shall be approximately 50% of the on and off time. 8.3.2 Incandescent lamp loads (ac or dc voltage) shall be tested at the specified ac or dc current and open-circuit voltage. When the component is tested with a tungsten filament incandescent lamp load, the test circuit (including the generator or other power supply) must have sufficient current-carrying capacity to allow the surge current to pass through the component and the load. The load should consist of a number of tungsten filament bulbs, each with a nominal rated power of 25W. The duty cycle should be approximately 25% of the time with the load connected and 75% of the time with the load disconnected. 8.3.3 Inductive load
8.3.3.1 DC voltage
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