Some standard content:
National Standard of the People's Republic of China
GB/T3973—1992
Crossbar switches
Issued on October 6, 1992
Implemented on May 1, 1993
Issued by the State Bureau of Technical Supervision
National Standard of the People's Republic of China
Crossbar switches
Crossbar switches
1 Subject content and scope of application
GB/T3973—1992
Replaces GB3973—1983
This standard applies to PT501, JX and JXP-1 crossbar switches (hereinafter referred to as switches), of which PT501 and JX switches are the preferred series. The connector is a special connecting element for the vertical and horizontal automatic telephone exchange, and can also be used for other communication or automatic control equipment with the same use conditions.
The use conditions of the connector are shown in Table 1.
Temperature range
Relative humidity
Atmospheric pressure
Adaptable environment
Working voltage
Variety and specification
Moisture-proof type
+5～+40℃, limit -10~+55℃
80% at +30℃
65~106kPz
Ground fixed device
95% at +30℃
The connector model and its output capacity, off-position spring contact and coil specifications are shown in Tables 2 to 5. Table 2
Conventional type
PT501A
PT501B
JXP-1A
PT501C
PT501E
Moisture-proof type
PT501AT
PT501BT
PT501CT
PT501ET
State Administration of Technical Supervision 199 2-10-06 Approved connector model and line capacity specifications
Line capacity specifications
10×20×3
10×20×4
10×20×5
10×30×3
10×30×3/4/3
10×30×3
10×30×4/3/3
10×12×9||t t||10×12×10
1. Use C push card
2. 3/4/3 means HA and HC are 3-wire, HB is 4-wire1. Do not use C push card
2. 4/3/3 means HA is 4-wire, HB and HC are 3-wire1. All horizontal bars are selection bars
2. All with static spring lead wires
Implemented on May 1, 1993
Number of contact groups||t t||Internal and external series connection
Number of contact groups
GB/T3973—1992
Specifications of the off-position spring of the connector
Number of contact groups
The maximum number of spring pieces is 9
4 Specifications of longitudinal unit coil
Wire diameter, mm
0.11 Nickel copper wire
Wire diameter, mm
2.2 The appearance structure of the connector is shown in Figure 1. Number of turns
13-000
15 000
Convert horizontal bar
Select horizontal bar
Number of dynamic contact groups
The maximum number of reeds is 6
Resistance, 2
Horizontal bar coil specifications
Resistance, 2
2.3 The marking of the connector consists of the model, the output capacity (for PT501A, B, C, E, JX2, JX and JXP1JXP1A, only the number of output lines can be written, the off-position spring specifications and the coil serial number, as well as the name and the number of this standard. The off-position spring specifications and the coil serial number are written in the form of fractions according to the vertical unit and horizontal bar, with the vertical unit as the numerator and the horizontal bar as the denominator. The vertical unit off-position spring specifications are written in the order of dynamic, static and conversion contacts. The horizontal bar off-position spring specifications are written in the order of conversion The order of horizontal bar and selection horizontal bar is written with the number of moving contacts, and the specifications of the off-position spring and the serial number of the coil are separated by "×".
GB/T3973—1992
Example: There are 2 conventional connectors, and the specifications of each part are shown in Table 6. Table 6
Capacity specifications
Connector
10×20×3bzxZ.net
10×30×3
Not using C push card
Connector should be marked as:
Vertical unit
Off-position spring specifications
Conversion horizontal bar
Selection horizontal bar
Coil specifications
Vertical unit
Winding 1-22-3
Wire diameter 0. 12 mm 0. 08
Number of turns87009000
Resistance600221002
PT501AX3
Vertical and horizontal connectorGB3973—1992
Or JX×3211Vertical and horizontal connectorGB3973—199231XI
Vertical and horizontal connectorGB3973-1992
Or JXP-1X3
Note: The manufacturer may add the factory code and product drawing number after the standard number of the mark. 3 Technical requirements
3.1 The structural dimensions and installation dimensions of the connector shall comply with the provisions of Figures 1 and 2. The relative position of the connector outlets shall comply with the provisions of Figure 3. The dimensions, surface treatment and performance parameters shall comply with the design drawings. Regulations, and all contact groups and coils should be installed correctly according to the model specifications. The appearance of the connector should be neat and tidy, without broken, rusted, stained, deformed and loose assembly. 3.2 The connector should operate correctly, and the horizontal bar and vertical unit should be able to push the cross contact group after the successive actions. 3.3 There should be a continuous tin layer on the connector contact spring and coil outlet terminals according to the specified parts of the design drawings, and there should be no flux residue on the coil frame.
3.4 The contact pressure range of the off-position spring contact should be 0.18~0.35N. The contact pressure range of the cross contact should be 0.150.45N. 3.5 The gap between the contacts when disconnected should be no less than 0.25mm. 3.6 The double contacts of the spring should act simultaneously, and the time difference of the contact action of the same combination of the same push card should be less than 3ms. 3.7
The contact resistance of the contact should not be greater than 0.102. 3.8
When the connector is working, the working noise level generated by the cross contact should not be greater than 0.5mV. 3.9
The DC resistance error of the vertical unit and horizontal bar electromagnet coils should be less than 10%. 3.10
The pull-in sensitivity of the vertical unit electromagnet should not be greater than 450 ampere-turns for the vertical unit with no more than 6 pairs of the same push card contact group; for the vertical unit with more than 6 pairs of the same push card contact group, it should not be greater than 500 ampere-turns. After the vertical unit is pulled in, its retention should not be greater than 200 ampere-turns. 3.11
The pull-in sensitivity of the horizontal bar electromagnet should not be greater than 650 ampere-turns. The joint connection time of the horizontal bar and the vertical unit should not be greater than 60ms. The release time of the horizontal bar should not be greater than 10ms. 3.14
When the vertical unit and the horizontal bar are attracted and released, the rebound time of the cross contact and the off-position spring contact driven by them should not exceed 4ms. 3.15
The horizontal bar selection pointer damping should be able to effectively reduce the pointer jitter. The minimum safe time interval from the release of the horizontal bar to the energization of the vertical unit should not exceed 50ms for 10×12, 10×20 and 10×30 connectors without C push card, and should not exceed 75ms for 10×30 connectors with C push card.
The minimum safe time interval from the release of the coil power failure to the second power-on re-action of the same vertical unit should not exceed 50ms for 10×12, 10×20 and 10×30 connectors without C push card, and should not exceed 75ms for 10×30 connectors with C push card. 3.16 When 4W of electric power is continuously input into the coils of the longitudinal unit and horizontal bar electromagnets, the average temperature rise of the coils should be greater than 65℃. 3.17 The dielectric insulation strength between the unconnected conductive parts of the connector and between each conductive part and the iron core and the frame should be able to withstand an AC voltage of 500V with a frequency of 50Hz and an effective value of 500V for 1min, or a voltage increase to 600V for 1s without breakdown, arcing and surface discharge, and there should be no leakage current exceeding 1mA. 3.18 The dielectric insulation resistance between the unconnected conductive parts of the connector and between each conductive part and the iron core and the frame should be no less than 500MQ.
3.19 The connector should be able to work under a gas pressure of 65kPa, and the dielectric insulation strength between its unconnected conductive parts and between each conductive part and the iron core and the frame should be able to withstand an AC voltage of 50Hz and an effective value of 350V for 1min without breakdown, arcing and surface discharge, and there should be no leakage current exceeding 1mA. 3.20 The connector should be able to work normally at an ambient temperature of +55℃ and -10℃, and its vertical unit and horizontal bar's pull-in ampere-turns and contact resistance should comply with the provisions of Articles 3.7, 3.10 and 3.11 respectively. 3.21 The connector should be able to work under the conditions listed in Table 7 and withstand the climatic conditions for a long time without structural damage or deformation. The insulation resistance should be greater than 10MQ, and the pull-in ampere-turns of the vertical unit and horizontal bar should still comply with the provisions of Articles 3.10 and 3.11. Table 7
Connector type
Conventional type
Moisture-proof type
+30℃
Relative humidity
Atmospheric pressure
86~106kPa
3.22 The connector should be able to withstand vibrations with a frequency of 10~55Hz and a full amplitude of 0.7mm without structural looseness or mechanical damage. The pull-in ampere-turns of the longitudinal unit and the horizontal bar should comply with the provisions of Articles 3.10 and 3.11. 3.23 The mechanical action life of the connector shall meet the following requirements: a. The action life of the switching crossbar shall not be less than 3×107 times; b. The action life of the vertical unit shall not be less than 3×10% times; c. When the cross contact is loaded with 1200Q resistance and the current is 50mA, the life shall not be less than 3×10° cycles, and the failure rate of the entire connector without replacement of parts shall not be greater than 1000%. 3%
4 Test method
4.1 The general test rules are as follows:
4.1.1 Unless otherwise specified, the test shall be carried out under the following normal climatic conditions. Temperature
Relative humidity
Atmospheric pressure
+15~+35℃;
45%~75%;
86~106kPa;
The air should be clean and pollution-free.
4.1.2 If the parameters to be tested vary according to climatic conditions and the law of their variation is unknown, if there is any doubt about the test data, the arbitration test can be carried out under the following climatic conditions. Temperature
Relative humidity
+20±1℃,
63%~67%
Atmospheric pressure
86~106kPa;
GB/T3973—1992
4.1.3 After the environmental tests such as temperature, humidity and air pressure, the connector should be restored under the following climatic conditions. Temperature
Relative humidity
Atmospheric pressure
Actual laboratory temperature ±2℃, but within the range of +15 to +35℃. 72%~78%;
86~106kPa.
4.1.4 Unless otherwise specified, the capacity of the DC power supply used for testing should be large enough, and the voltage regulation rate should be less than 2% and the ripple factor should be less than 1% at the rated full load current.
4.1.5 Unless otherwise specified, at the beginning of each test, the connector should be in a good and clean state. During the test, the connector should not be mechanically adjusted, and the contacts should not be cleaned or touched. 4.2 The inspection of the appearance structure, specifications, shape and size of parts, surface coating and markings shall be carried out by visual inspection and measurement with measuring tools that can ensure the accuracy requirements marked on the design drawings, and checked with the corresponding design documents. The relative position of the connector outlet shall be checked with Figure 3 and the corresponding design documents.
4.3 The inspection of mechanical adjustment and correctness of action shall be tested according to the following method. 4.3.1 Contact gap: When the horizontal bar electromagnet and the vertical unit electromagnet are in the non-excitation state, use a thickness gauge to insert between the cross contacts and between the contacts disconnected by the off-position spring to measure. For the cross contacts, the gauge plane should be parallel to the static spring piece, and for the off-position spring contact, the gauge plane should be perpendicular to the line of the minimum distance between the contacts. Be careful to avoid moving the contact spring piece. The gauge surface should be clean, and the thickness error should not be greater than the secondary tolerance specified in JJG62.
After the level vertical unit electromagnet is attracted with the rated current, the gap of the contacts disconnected by the off-position spring is measured in the same way. 4.3.2 Contact contact pressure: The vertical unit electromagnet is attracted according to the rated attraction current, and the armature pushes the selection pointer to close the cross contacts. Use a dynamometer to measure the pressure of the cross contacts and the off-position spring moving contact as close to the contacts as possible. The force direction of the dynamometer should be perpendicular to the contact spring plane. When the pressure of the off-spring contact cannot be measured directly, an indirect method is allowed to be used instead, that is, the pressure of the static spring against the fixed card when the contact is not closed should be 0.18~0.26N, and the follow-up when the contact is closed should not be less than 0.2mm. When the horizontal bar electromagnet is attracted at the rated pull-in current, the contact pressure of the off-spring contact is measured in the same way. When the longitudinal unit electromagnet is in the non-excitation state, the contact pressure of its off-spring closing contact is measured in the same way. The accuracy error of the dynamometer should not be greater than 0.01N. 4.3.3 Correctness of action and selection of pointer position: Make the longitudinal unit and the horizontal bar cooperate with each other to observe whether the pointer correctly transmits the action of the corresponding longitudinal unit armature. Select the position of the pointer when it is not in action and check it visually, and push the longitudinal unit armature to observe whether the pointer malfunctions.
4.4 The contact resistance test of the contact shall be carried out in the following way. 4.4.1 Test with voltage and current meter method, the circuit connection is as shown in Figure 4. 4.4.2 Unless otherwise specified, the current passing through the contact is 10mA, and the contact open circuit voltage is 6V. 4.4.3 Before the test, the contact should not be operated and the current should not pass through. For the test of the moving and cross contacts, the corresponding horizontal bar and vertical unit electromagnet can be successively attracted according to the rated current to push the contact to close. No voltage should be applied during the action conversion process from the open to the closed contact. The contact is operated three times. After each action, the closed contact is measured once, and the contact resistance is calculated according to R-VI. The largest calculated value among the three times is taken as the contact resistance value. The contact resistance of the cross contact includes the two pairs of cross contact series resistance driven by the conversion rod and the selection rod pointer, and includes the resistance of the reed itself.
4.4.4 When measuring the contact resistance of the contact by other methods, the current passing through the contact should not be greater than 10mA, and the contact open circuit voltage should not be greater than 6V.
4.4.5 The test error should not be greater than 10%.
4.5 The cross contact noise is tested as follows. 4.5.1 The cross contacts to be tested are the two cross contacts of lines a and b pushed by the conversion cross bar in the same longitudinal unit, and the two cross contacts of lines a and b pushed by any selected cross bar. The circuit connection is shown in Figure 5, so that the tested contacts are connected in series, and the DC current passing through the contacts is 50mA. 4.5.2 The longitudinal unit of the contact to be tested is kept energized under the condition of not more than 200 ampere-turns, and the first winding 5 of the remaining 9 longitudinal unit coils
GB/T3973—1992
is simultaneously and intermittently energized and released under the condition of direct connection to a voltage of 60V, at a speed of 3 to 5 times per second. 4.5.3 Observe the voltage reading of the noise meter under the conditions described in Articles 4.5.1 and 4.5.2, and the noise meter is not connected to the weighing network. 4.6 The ampere-turns of the vertical unit and the horizontal bar are tested according to the following method. 4.6.1 The ampere-turns of the horizontal bar electromagnet are tested: Move the horizontal bar in the opposite direction of the predetermined test so that any 9 selection pointers on it are clamped by the vertical unit, and keep these 9 selection pointers clamped during the attraction of the test horizontal bar electromagnet. Then restore the horizontal bar, energize the coil of the electromagnet under test, and gradually increase the current. The current value when the horizontal bar armature just touches the iron core, the off-position spring contacts are all closed, and the 10th pointer reaches the correct working position is the attraction value. 4.6.2 The ampere-turns of the vertical unit electromagnet are tested: Move the conversion horizontal bar and any selection horizontal bar at the same time, energize the coil of the electromagnet under test and gradually increase the current. The current value when the vertical armature just touches the iron core and the corresponding cross contacts of the conversion horizontal bar and the selection horizontal bar are closed and the off-position spring contacts are actuated is the attraction value.
4.6.3 Longitudinal unit electromagnet holding ampere-turns: After the longitudinal unit is energized at the rated current and the two sets of cross contacts and the spring contacts are correctly pushed, the current of the electromagnet coil under test is gradually reduced to obtain the minimum current when the armature can still remain in the energized position without leaving the iron core, which is the holding current value.
4.7 The time characteristics of the connector are tested in the following way. 4.7.1 The wiring time and the horizontal bar release time can be tested by an oscilloscope, a digital time meter or other methods. 4.7.2 The wiring time, the horizontal bar release time and the contact bounce time should be tested under the condition that the electromagnet coil is directly connected to a 60V power supply, and no other resistors or reactances should be connected in series or in parallel in the coil energization circuit. 4.7.3 Wiring time refers to the time from the moment the electromagnet coil for switching and selecting the horizontal bar is energized, until the vertical unit electromagnet is attracted by the horizontal bar release spring contact and the corresponding two sets of cross contacts are closed. Before the test, the 9 pointers on the switching bar have been clamped by the 9 vertical units in the opposite direction of the predetermined test action. a. Oscilloscope method: Connect the circuit and test according to Figure 6a. The time base error of the oscilloscope should not be greater than 3%. b. Digital time meter method: Connect the circuit and test according to Figure 6b, or connect the circuit according to the specific structure of the digital time meter. The error of the time meter should be less than 1ms.
4.7.4 The horizontal bar release time should be tested separately for each horizontal bar electromagnet. There should be 9 pointers on the horizontal bar clamped by the vertical units in the same direction of the test.
Oscilloscope method: Connect the circuit and test according to Figure 7a. The time base error of the oscilloscope should not be greater than 3%. a.
Digital time meter method: Connect the circuit and test according to Figure 7b or connect the circuit according to the specific structure of the digital time meter, pay special attention to b.
to avoid the transient voltage when the coil circuit is disconnected from affecting the gate circuit of the time meter, and the error of the time meter should be less than 1ms. 4.7.5 The circuit for testing the contact bounce time with an oscilloscope is shown in Figure 8. The contact break voltage is 2~6V, the contact current is not more than 6mA, and the voltage and power-off of the electromagnet coil should be instantaneous. 4.8 The pointer jitter time should be tested under two conditions, namely when the horizontal bar is released and restored and when the vertical unit armature releases the pointer held by it. 4.8.1 The test of the minimum safe time interval between the horizontal bar electromagnet power-off and the vertical unit electromagnet power-on is carried out according to the following method. For the horizontal bar input voltage of 60V and the duration of 50ms, after the pulse ends, a second pulse is input to all vertical units at a specified time interval of 50ms or 75ms to make the vertical units attract. If any vertical unit (except the connector on the C push card) clamps the pointer and pushes any cross contact to close, it is a fault. For connectors using C push cards, if any vertical unit cannot make the C push card push the cross contact, it is also a fault. Test 10 vertical units of each connector for 200 times in a row, and the number of faults is allowed to be 2 times. 4.8.2 The test of the minimum time interval between the first coil power-off and the second power-on after the first action of the vertical unit electromagnet is carried out according to the following method.
Input a pulse with a voltage of 60V and a duration of 100ms to any horizontal bar, so that the horizontal bar is attracted, and the horizontal bar release spring contact drives all vertical units to attract. After the pulse ends, after the sum of the horizontal bar release time and the minimum time interval specified in Article 3.15, input the second pulse to all 10 vertical units. Make the vertical unit attract, and any vertical unit (except the connector on the C push card) clamps the pointer and pushes any cross contact to close, which is a fault. For the connector using C push card, if any vertical unit cannot make C push card push cross contact, it is a fault. Test 10 vertical units of each connector 200 times continuously, and allow 2 faults. 6
GB/T3973—1992
4.8.3 For the tests of 4.8.1 and 4.8.2, it is allowed to test any selected selection pointer, and each pointer is tested 200 times. Each connector selects 5 pointers, and allows 1 fault. 4.9 The resistance of the electromagnet coil of the vertical unit and the horizontal bar is measured by a bridge, and the ambient temperature is recorded. Before the test, the connector should be placed in the test environment for no less than 2 hours. The measured coil resistance is converted into the value at 20℃ according to the following formula. In the formula, t is the ambient temperature at the time of measurement, ℃, R20=Rt×234. 5+t
Rt is the resistance value at temperature t, α. 4.10 The temperature rise of the vertical unit and horizontal bar electromagnet coils shall be tested as follows. (Q)
4.10.1 Place the tested connector in the test environment for 2 hours and measure the cold resistance of the coil. 4.10.2 Input 4W of electric power to the coil so that the coil heats up and reaches thermal equilibrium under this input power. When the current passing through the coil and the voltage across the coil do not change for more than 15 minutes, it can be considered that thermal equilibrium has been reached. 4.10.3 After the coil reaches thermal equilibrium, measure the resistance or calculate the resistance from the current and voltage while maintaining the electric power input. 4.10.4 Calculate the average temperature rise of the coil according to the following formula. R2
1/(234.5+t)
Where: t—ambient temperature when measuring coil cold resistance, ℃ R1—coil resistance value measured at ambient temperature t,, (℃)
R2—coil resistance value after inputting 4W electric power and reaching thermal equilibrium, 2.4.10.5 During the test, the tested connector should be protected from external airflow, sunlight or other thermal radiation.4.11 When testing the dielectric insulation strength of the connector, apply voltage between all mutually insulated parts of the connector, and gradually increase the voltage to 500V and keep it for 1min (or increase the voltage to 600V and keep it for 1s), and observe whether there is breakdown, surface arcing and leakage. The voltage waveform of the test equipment should be a sine wave, the waveform distortion should be less than 5%, and the capacity of the test equipment should meet the requirement that when the leakage current reaches 1mA, the change of the test terminal voltage should be less than 5%. 4.12 The dielectric insulation resistance of the connector is tested with a megohmmeter of 250V between any mutually insulated parts of the connector. The surface of the connector shall not be cleaned at the beginning and during the test. The total test error including the instrument, wiring pad, etc. shall not be greater than 10%.
4.13 The test of the moisture resistance of the connector shall be carried out in accordance with the following provisions. 4.13.1 The connector shall first be inspected for appearance and mechanical adjustment and tested for ampere-turns, dielectric insulation strength and insulation resistance.
4.13.2 Place the connector in a temperature and humidity chamber, keep the temperature and humidity in the chamber within the range specified in Table 8, do not energize the connector coil, and do not load the contacts. Keep it in the chamber for the time specified in Table 8. Table 8
Connector
Conventional type
Moisture-proof type
Temperature, ℃
+40±2
+40±2
Relative humidity, %
Test holding time, h
4.13.3 After the test time is over, take out the connector and put it into the recovery condition specified in Article 4.1.3 for 2 hours. 4.13.4 After the recovery time is over, carry out the following tests under normal test climate conditions. Check the dielectric insulation strength according to the method in Article 4.11, but the test voltage is changed to 350V1min. The test results should meet the requirements of Article 3.19a.
GB/T3973—1992
Check the dielectric insulation resistance according to the method in Article 4.12. It should not be less than 10MQ. b.
c. Check the horizontal bar's ampere-turns and the vertical unit's ampere-turns, which should still comply with the provisions of Articles 3.10 and 3.11. 4.14 The test of the connector's ability to work in a low-pressure environment shall be carried out in the following manner. 4.14.1 The connector shall first be checked for mechanical adjustment and qualified, and tested for ampere-turns, ampere-turns, and dielectric insulation resistance. 4.14.2 Place the connector in a pressure test box. The box should be equipped with measuring and observation devices. Connect the test wire to the outside of the box and reduce the pressure in the box to 65kPa. The allowable error of the pressure is ±5%, and the temperature is within the range of +15 to +35°C. 4.14.3 Test the dielectric insulation withstand voltage strength in accordance with the method in Article 4.11, but change the test voltage to 350V1min. The test results shall comply with the provisions of Article 3.19.
4.14.4 Keep the connector in the environment specified in Article 4.14.2, and energize the connector intermittently, so that the connector operates 3 to 5 times per second, and the power-on and power-off time are equal. The total operation time is 2 hours, and the coil should not be burned out. 4.15 The test of the working ability of the connector in extreme ambient temperature shall be carried out according to the following method. 4.15.1 The connector shall first be qualified by the appearance, pull-in and holding ampere-turn inspection. 4.15.2 Place the connector in a high-temperature box, and lead the wiring of the longitudinal unit and the horizontal bar coil out of the box, so that the temperature in the box rises to 55 ± 2℃, and at the same time apply a 60V DC voltage to the coil. After the longitudinal unit is pulled in, the two windings of the coil should be connected in series to the power supply; keep it at this temperature and power-on condition for 1 hour, and then measure the pull-in ampere-turn and the longitudinal unit holding ampere-turn. It should still meet the requirements of Articles 3.10 and 3.11. 4.15.3 Take the connector out of the high temperature box and place it under the recovery conditions specified in Section 4.1.3 for 1 hour. Check that the parts are not damaged and the assembly is not loose.
4.15.4 Put the connector back into the low temperature box and connect the test wires and lead them out of the box. Let the temperature in the box drop to -10±2℃. After keeping this temperature for 1 hour, measure the pull-in ampere-turns and the holding ampere-turns of the longitudinal unit. They should still meet the requirements of Sections 3.10 and 3.11. 4.15.5 Take the connector out of the cold box and inspect it under normal climatic conditions. The parts should be free of damage and the assembly should be free of looseness. 4.16 The vibration resistance of the connector shall be tested according to the following provisions. 4.16.1 The connector shall first be inspected for appearance, mechanical adjustment, and ampere-turns and ampere-turns. 4.16.2 Install the connector according to the actual use orientation, firmly install it on the vibration table with a clamp, and vibrate it according to the installation orientation in actual use.
The vibration frequency is continuously scanned at a uniform speed or logarithmically changing speed within 10~55Hz. The scanning cycle is 5min, and the vibration is 25min in total. The vibration waveform is a sine wave. The ratio of high-order harmonics in the waveform at the sample installation position should not be greater than 25%. The full amplitude of vibration is 0.7mm, and the allowable deviation is -15%. The full amplitude of vibration in the direction perpendicular to the specified vibration direction at the installation position of the sample should not exceed 0.18mm (when there is no scanning frequency vibration equipment, it is allowed to use a fixed frequency of 50Hz for vibration test). 4.16.4 After the vibration is completed, the connector shall be inspected. There shall be no mechanical damage and loose assembly of parts and screws, and the connector shall operate normally. The pull-in ampere-turns of the longitudinal unit and the horizontal bar, and the holding ampere-turns of the longitudinal unit shall still comply with the provisions of Articles 3.10 and 3.11. 4.17 The life test of the connector shall be carried out in accordance with the following provisions. 4.17.1 The connector shall first be inspected for appearance, mechanical adjustment, pull-in ampere-turns, etc., and the inspection data shall be recorded. 4.17.2 Each action of the connector is the action of the conversion horizontal bar and any selection horizontal bar. Any vertical unit is pulled in and held, and then the horizontal bar is restored. The test equipment automatically checks whether the cross contact is closed and whether the pointer is operating correctly. If everything is normal, the second action will be started. The test process should cover all cross contacts and ensure that the probability of the conversion horizontal bar, the selection horizontal bar and the longitudinal unit action is equal. The test action rate of the connector should not exceed 5 times per second. The test equipment shall automatically give an alarm for faults such as pointer malfunction, cross contact failure to close or separate, and stop the test. The total number of operations of the connector is 3×10 times, and each vertical unit shall operate 3×10° times. 4.17.3 The load of the cross contact shall comply with the provisions of Article 3.23, and the test voltage shall be 60V±5%. 4.17.4
Check the following items after the test.
The cross contact pressure shall still be greater than 0.12N;
The cross contact contact resistance shall not be greater than 0.2; c.
When the horizontal bar is in the balanced position, the pointer shall stay in the middle position, and when the vertical unit is attracted, it shall not cause the pointer to malfunction 8
GB/T3973—1992
The attraction ampere-turns of the vertical unit and the horizontal bar electromagnet shall still comply with the provisions of Articles 3.10 and 3.11; the assembly of the entire connector shall be free of looseness and damage. 5 During the entire life test, the allowable number of failures of the connector should not be greater than that shown in Table 9. 4.17.5
Total number of test actions
(number of connectors × number of actions)
3×107
6×107
Inspection rules
5.1 The acceptance of connectors is divided into acceptance test and routine test. See Table 10 for specific items. Table 10 Acceptance items
Project name
Appearance structure and mechanical adjustment
Appearance, structure
Correctness of action
Weldability
Contact gap
Acceptance test
Group I
Group I
Routine test
Group I
Contact pressure
Coil resistance
Pull-in, hold sensitivity
Vertical unit
Dielectric insulation resistance
Dielectric insulation withstand voltage
Anti-vibration performance
Coil temperature rise
Adaptability to extreme ambient temperature
Adaptability to low air pressure||t t||Moisture resistance
Contact resistance
Time characteristics
Connection time
Contact action synchronization
Release time
Contact bounce
Pointer jitter
Vertical unit action interval time
Allowable number of faults
Technical requirements (clauses of this standard)
Test methods (clauses of this standard)
4.6.2 and 4.6.3
4.7.1, 4.7.2 and 4.7.3
4.7.1~4.7.5
4.7.1, 4.7.2, 4.7.4, 4.7.5
4.7.1, 4.7.1, 4.7.1, 4. 7.6
The acceptance test shall be conducted by the quality management department of the manufacturer according to the items specified in Table 10, and the ordering party has the right to conduct re-inspection. 5.2
The routine test shall be conducted by the quality management department of the manufacturer from the connectors that have passed the acceptance test (the interval between re-sampling shall not exceed three years). The connectors used for routine test shall be divided into three groups and tested according to the items and sequence specified in Table 10. The manufacturer shall be responsible for providing the ordering party with routine test reports. 5.4 During the acceptance and routine tests, if the connector does not meet the technical requirements of this standard and any point specified in the drawings or documents cited in the technical requirements, it shall constitute a defect. A connector with one or more defects shall become a non-conforming product. Defects can be divided into two types according to their nature: light and serious defects. According to the different defects, unqualified products can also be divided into two types of unqualified products: light and serious. The specific classification of defects or unqualified products is determined by the manufacturer and the ordering party through negotiation. 5.5 The acceptance test of the connectors submitted in batches is carried out by sampling inspection. The sampling plan is selected and determined by the ordering party and the manufacturer according to the agreed qualified quality level or the allowable number of defects per 100 connectors in accordance with GB2828 "Batch Inspection Count Sampling Procedure and Sampling Table (Applicable to Continuous Batch Inspection)".
5.6 In addition to the life test, four connectors are selected from the qualified product batch for each group of routine tests, and the number of failures allowed is one. The life test is carried out on two connectors that have been tested for time characteristics, and the number of actions of each longitudinal unit should not be less than 3×10° times. 5.7 Except for Group II 1 and 2, connectors that have undergone routine tests shall not be sold as commodities. 6 Marking, packaging, transportation and storage
6.1 Marking
6.1.1 The connector frame should be labeled with the following points clearly marked: a. Manufacturer's trademark or factory mark;
b. The model and specification code of the connector.
6.1.2 The electromagnetic coils of the vertical unit and horizontal bar of the connector should be labeled to indicate the wire diameter, number of turns and DC resistance of each winding of the coil.
6.2 Packaging
6.2.1 In the packaging of the connector, all horizontal bars should be fixed so that the horizontal bars cannot rotate and cannot move along the axial direction of the horizontal bars and perpendicular to the axial direction of the horizontal bars.
6.2.2 The connector should have a special packaging box, and the support of the connector in the box should be shockproof. There should be a packing list in the box, indicating: the manufacturer's name and trademark;
the model and specification code of the connector;
the name or code of the packing person,
the packing date;
e. the manufacturer's quality inspection seal.
6.2.3 The special packaging box for the connector used for separate transportation should have shock and moisture-proof measures, and these measures and the sturdiness of the packaging box should ensure that the product is not damaged during transportation. 6.2.4 Several packaging boxes containing connectors can be packed in the same transportation box, and the box should have shock and moisture-proof measures, and these measures and the sturdiness of the box should ensure that the product is not damaged during transportation. Each transportation box should be accompanied by a packing list, which should indicate: a. the manufacturer's name;
the model and specification code of the connector in the box; the number of connectors of each specification and the total number of connectors in the box; c.
the packing date and the name or code of the packing person, the manufacturer's quality inspection seal.
6.2.5 The boxes used for transportation should comply with the provisions of GB191 "Packaging, Storage and Transportation Pictorial Marking" and should be marked with "upward", "moisture-proof" and "handle with care" and other signs.
6.3 Transportation
Transport boxes containing connectors and special packaging boxes for separate transportation may be transported by any means of transportation, but they must be protected from direct rain and snow. 6.4 Storage
GB/T3973—1992
The packaged connectors should be stored in a warehouse with an ambient temperature of 0 to 35°C and a relative humidity of no more than 80%. There should be no sulfide and no corrosive substances or gases around. The storage period is 18 months. During the storage period, the product should meet all the technical requirements specified in this standard. 112 Install the connector according to the actual use orientation, firmly install it on the vibration table with a clamp, and vibrate it according to the actual installation orientation.
The vibration frequency is continuously scanned at a uniform speed or logarithmically changing speed within 10~55Hz, the scanning cycle is 5min, and the vibration is 25min in total. The vibration waveform is a sine wave. The ratio of high-order harmonics in the waveform at the sample installation position should not exceed 25%. The full amplitude of vibration is 0.7mm, and the allowable deviation is -15%. The full amplitude of vibration in the direction perpendicular to the specified vibration direction at the installation position of the sample should not exceed 0.18mm (when there is no scanning frequency vibration equipment, it is allowed to use a fixed frequency of 50Hz for vibration test). 4.16.4 After the vibration is completed, check the connector. There should be no mechanical damage and loose assembly of parts and screws, and the connector should operate normally; the pull-in ampere-turns of the longitudinal unit and the horizontal bar, and the holding ampere-turns of the longitudinal unit should still meet the requirements of Articles 3.10 and 3.11. 4.17 The life test of the connector shall be carried out in accordance with the following provisions. 4.17.1 The connector shall first be inspected for appearance, mechanical adjustment and ampere-turns, and the inspection data shall be recorded. 4.17.2 Each action of the connector is the action of the conversion bar and any selection bar, any vertical unit is attracted and maintained, and then the bar is restored. The test equipment automatically checks whether the cross contact is closed and whether the pointer is moving correctly. If everything is normal, the second action will be started. The test process should cover all cross contacts and ensure that the probability of the conversion bar, selection bar and vertical unit action is equal. The test action rate of the connector shall not exceed 5 times per second. The test equipment shall automatically alarm for faults such as pointer misoperation, cross contact not closed or not separated, and stop the test. The total number of actions of the connector is 3×10 times, and each vertical unit shall act 3×10° times. 4.17.3 The load of the cross contact shall be in accordance with the provisions of Article 3.23, and the test voltage is 60V±5%. 4.17.4
Check the following items after the test.
The cross contact pressure should still be greater than 0.12N;
The cross contact resistance should not be greater than 0.2; c.
When the horizontal bar is in the balance position, the pointer should stay in the middle position, and when the vertical unit is attracted, it should not cause the pointer to malfunction 8
GB/T3973-1992
The attraction ampere-turns of the vertical unit and horizontal bar electromagnet should still comply with the provisions of Articles 3.10 and 3.11; the assembly of the entire connector should not be loose or damaged. 5 During the entire life test, the allowable number of faults of the connector should not be greater than that shown in Table 9. 4.17.5
Total number of test actions
(Number of connectors × number of actions)
3×107
6×107
Inspection rules
5.1 The acceptance of the connector is divided into acceptance test and routine test. See Table 10 for specific items. Table 10 Acceptance items
Project name
Appearance structure and mechanical adjustment
Appearance, structure
Correctness of action
Weldability
Contact gap
Acceptance test
Group I
Group I
Routine test
Group I
Contact pressure
Coil resistance
Pull-in, hold sensitivity
Vertical unit
Dielectric insulation resistance
Dielectric insulation withstand voltage
Anti-vibration performance
Coil temperature rise
Adaptability to extreme ambient temperature
Adaptability to low air pressure||t t||Moisture resistance
Contact resistance
Time characteristics
Connection time
Contact action synchronization
Release time
Contact bounce
Pointer jitter
Vertical unit action interval time
Allowable number of faults
Technical requirements (clauses of this standard)
Test methods (clauses of this standard)
4.6.2 and 4.6.3
4.7.1, 4.7.2 and 4.7.3
4.7.1~4.7.5
4.7.1, 4.7.2, 4.7.4, 4.7.5
4.7.1, 4.7.1, 4.7.1, 4. 7.6
The acceptance test shall be conducted by the quality management department of the manufacturer according to the items specified in Table 10, and the ordering party has the right to conduct re-inspection. 5.2
The routine test shall be conducted by the quality management department of the manufacturer from the connectors that have passed the acceptance test (the interval between re-sampling shall not exceed three years). The connectors used for routine test shall be divided into three groups and tested according to the items and sequence specified in Table 10. The manufacturer shall be responsible for providing the ordering party with routine test reports. 5.4 During the acceptance and routine tests, if the connector does not meet the technical requirements of this standard and any point specified in the drawings or documents cited in the technical requirements, it shall constitute a defect. A connector with one or more defects shall become a non-conforming product. Defects can be divided into two types according to their nature: light and serious defects. According to the different defects, unqualified products can also be divided into two types of unqualified products: light and serious. The specific classification of defects or unqualified products is determined by the manufacturer and the ordering party through negotiation. 5.5 The acceptance test of the connectors submitted in batches is carried out by sampling inspection. The sampling plan is selected and determined by the ordering party and the manufacturer according to the agreed qualified quality level or the allowable number of defects per 100 connectors in accordance with GB2828 "Batch Inspection Count Sampling Procedure and Sampling Table (Applicable to Continuous Batch Inspection)".
5.6 In addition to the life test, four connectors are selected from the qualified product batch for each group of routine tests, and the number of failures allowed is one. The life test is carried out on two connectors that have been tested for time characteristics, and the number of actions of each longitudinal unit should not be less than 3×10° times. 5.7 Except for Group II 1 and 2, connectors that have undergone routine tests shall not be sold as commodities. 6 Marking, packaging, transportation and storage
6.1 Marking
6.1.1 The connector frame should be labeled with the following points clearly marked: a. Manufacturer's trademark or factory mark;
b. The model and specification code of the connector.
6.1.2 The electromagnetic coils of the vertical unit and horizontal bar of the connector should be labeled to indicate the wire diameter, number of turns and DC resistance of each winding of the coil.
6.2 Packaging
6.2.1 In the packaging of the connector, all horizontal bars should be fixed so that the horizontal bars cannot rotate and cannot move along the axial direction of the horizontal bars and perpendicular to the axial direction of the horizontal bars.
6.2.2 The connector should have a special packaging box, and the support of the connector in the box should be shockproof. There should be a packing list in the box, indicating: the manufacturer's name and trademark;
the model and specification code of the connector;
the name or code of the packing person,
the packing date;
e. the manufacturer's quality inspection seal.
6.2.3 The special packaging box for the connector used for separate transportation should have shock and moisture-proof measures, and these measures and the sturdiness of the packaging box should ensure that the product is not damaged during transportation. 6.2.4 Several packaging boxes containing connectors can be packed in the same transportation box, and the box should have shock and moisture-proof measures, and these measures and the sturdiness of the box should ensure that the product is not damaged during transportation. Each transportation box should be accompanied by a packing list, which should indicate: a. the manufacturer's name;
the model and specification code of the connector in the box; the number of connectors of each specification and the total number of connectors in the box; c.
the packing date and the name or code of the packing person, the manufacturer's quality inspection seal.
6.2.5 The boxes used for transportation should comply with the provisions of GB191 "Packaging, Storage and Transportation Pictorial Marking" and should be marked with "upward", "moisture-proof" and "handle with care" and other signs.
6.3 Transportation
Transport boxes containing connectors and special packaging boxes for separate transportation may be transported by any means of transportation, but they must be protected from direct rain and snow. 6.4 Storage
GB/T3973—1992
The packaged connectors should be stored in a warehouse with an ambient temperature of 0 to 35°C and a relative humidity of no more than 80%. There should be no sulfide and no corrosive substances or gases around. The storage period is 18 months. During the storage period, the product should meet all the technical requirements specified in this standard. 112 Install the connector according to the actual use orientation, firmly install it on the vibration table with a clamp, and vibrate it according to the actual installation orientation.
The vibration frequency is continuously scanned at a uniform speed or logarithmically changing speed within 10~55Hz, the scanning cycle is 5min, and the vibration is 25min in total. The vibration waveform is a sine wave. The ratio of high-order harmonics in the waveform at the sample installation position should not exceed 25%. The full amplitude of vibration is 0.7mm, and the allowable deviation is -15%. The full amplitude of vibration in the direction perpendicular to the specified vibration direction at the installation position of the sample should not exceed 0.18mm (when there is no scanning frequency vibration equipment, it is allowed to use a fixed frequency of 50Hz for vibration test). 4.16.4 After the vibration is completed, check the connector. There should be no mechanical damage and loose assembly of parts and screws, and the connector should operate normally; the pull-in ampere-turns of the longitudinal unit and the horizontal bar, and the holding ampere-turns of the longitudinal unit should still meet the requirements of Articles 3.10 and 3.11. 4.17 The life test of the connector shall be carried out in accordance with the following provisions. 4.17.1 The connector shall first be inspected for appearance, mechanical adjustment and ampere-turns, and the inspection data shall be recorded. 4.17.2 Each action of the connector is the action of the conversion bar and any selection bar, any vertical unit is attracted and maintained, and then the bar is restored. The test equipment automatically checks whether the cross contact is closed and whether the pointer is moving correctly. If everything is normal, the second action will be started. The test process should cover all cross contacts and ensure that the probability of the conversion bar, selection bar and vertical unit action is equal. The test action rate of the connector shall not exceed 5 times per second. The test equipment shall automatically alarm for faults such as pointer misoperation, cross contact not closed or not separated, and stop the test. The total number of actions of the connector is 3×10 times, and each vertical unit shall act 3×10° times. 4.17.3 The load of the cross contact shall be in accordance with the provisions of Article 3.23, and the test voltage is 60V±5%. 4.17.4
Check the following items after the test.
The cross contact pressure should still be greater than 0.12N;
The cross contact resistance should not be greater than 0.2; c.
When the horizontal bar is in the balance position, the pointer should stay in the middle position, and when the vertical unit is attracted, it should not cause the pointer to malfunction 8
GB/T3973-1992
The attraction ampere-turns of the vertical unit and horizontal bar electromagnet should still comply with the provisions of Articles 3.10 and 3.11; the assembly of the entire connector should not be loose or damaged. 5 During the entire life test, the allowable number of faults of the connector should not be greater than that shown in Table 9. 4.17.5
Total number of test actions
(Number of connectors × number of actions)
3×107
6×107
Inspection rules
5.1 The acceptance of the connector is divided into acceptance test and routine test. See Table 10 for specific items. Table 10 Acceptance items
Project name
Appearance structure and mechanical adjustment
Appearance, structure
Correctness of action
Weldability
Contact gap
Acceptance test
Group I
Group I
Routine test
Group I
Contact pressure
Coil resistance
Pull-in, hold sensitivity
Vertical unit
Dielectric insulation resistance
Dielectric insulation withstand voltage
Anti-vibration performance
Coil temperature rise
Adaptability to extreme ambient temperature
Adaptability to low air pressure||t t||Moisture resistance
Contact resistance
Time characteristics
Connection time
Contact action synchronization
Release time
Contact bounce
Pointer jitter
Vertical unit action interval time
Allowable number of faults
Technical requirements (clauses of this standard)
Test methods (clauses of this standard)
4.6.2 and 4.6.3
4.7.1, 4.7.2 and 4.7.3
4.7.1~4.7.5
4.7.1, 4.7.2, 4.7.4, 4.7.5
4.7.1, 4.7.1, 4.7.1, 4. 7.6
The acceptance test shall be conducted by the quality management department of the manufacturer according to the items specified in Table 10, and the ordering party has the right to conduct re-inspection. 5.2
The routine test shall be conducted by the quality management department of the manufacturer from the connectors that have passed the acceptance test (the interval between re-sampling shall not exceed three years). The connectors used for routine test shall be divided into three groups and tested according to the items and sequence specified in Table 10. The manufacturer shall be responsible for providing the ordering party with routine test reports. 5.4 During the acceptance and routine tests, if the connector does not meet the technical requirements of this standard and any point specified in the drawings or documents cited in the technical requirements, it shall constitute a defect. A connector with one or more defects shall become a non-conforming product. Defects can be divided into two types according to their nature: light and serious defects. According to the different defects, unqualified products can also be divided into two types of unqualified products: light and serious. The specific classification of defects or unqualified products is determined by the manufacturer and the ordering party through negotiation. 5.5 The acceptance test of the connectors submitted in batches is carried out by sampling inspection. The sampling plan is selected and determined by the ordering party and the manufacturer according to the agreed qualified quality level or the allowable number of defects per 100 connectors in accordance with GB2828 "Batch Inspection Count Sampling Procedure and Sampling Table (Applicable to Continuous Batch Inspection)".
5.6 In addition to the life test, four connectors are selected from the qualified product batch for each group of routine tests, and the number of failures allowed is one. The life test is carried out on two connectors that have been tested for time characteristics, and the number of actions of each longitudinal unit should not be less than 3×10° times. 5.7 Except for Group II 1 and 2, connectors that have undergone routine tests shall not be sold as commodities. 6 Marking, packaging, transportation and storage
6.1 Marking
6.1.1 The connector frame should be labeled with the following points clearly marked: a. Manufacturer's trademark or factory mark;
b. The model and specification code of the connector.
6.1.2 The electromagnetic coils of the vertical unit and horizontal bar of the connector should be labeled to indicate the wire diameter, number of turns and DC resistance of each winding of the coil.
6.2 Packaging
6.2.1 In the packaging of the connector, all horizontal bars should be fixed so that the horizontal bars cannot rotate and cannot move along the axial direction of the horizontal bars and perpendicular to the axial direction of the horizontal bars.
6.2.2 The connector should have a special packaging box, and the support of the connector in the box should be shockproof. There should be a packing list in the box, indicating: the manufacturer's name and trademark;
the model and specification code of the connector;
the name or code of the packer,
the packing date;
e. the manufacturer's quality inspection seal.
6.2.3 The special packaging box for the connector used for separate transportation should have shock and moisture-proof measures, and these measures and the firmness of the packaging box should ensure that the product is not damaged during transportation. 6.2.4 Several packaging boxes containing connectors can be packed in the same transportation box, and the box should have shock and moisture-proof measures, and these measures and the firmness of the box should ensure that the product is not damaged during transportation. Each transportation box should be accompanied by a packing list, which should indicate: a. the manufacturer's name;
the model and specification code of the connector in the box; the number of connectors of each specification and the total number of connectors in the box; c.
the packing date and the name or code of the packer, the manufacturer's quality inspection seal.
6.2.5 The boxes used for transportation should comply with the provisions of GB191 "Packaging, Storage and Transportation Pictorial Marking" and should be marked with "upward", "moisture-proof" and "handle with care" and other signs.
6.3 Transportation
Transport boxes containing connectors and special packaging boxes for separate transportation may be transported by any means of transportation, but they must be protected from direct rain and snow. 6.4 Storage
GB/T3973—1992
The packaged connectors should be stored in a warehouse with an ambient temperature of 0 to 35°C and a relative humidity of no more than 80%. There should be no sulfide and no corrosive substances or gases around. The storage period is 18 months. During the storage period, the product should meet all the technical requirements specified in this standard. 1118mm (When there is no scanning frequency vibration equipment, it is allowed to use a fixed frequency of 50Hz for vibration test). 4.16.4 After the vibration is completed, the connector shall be inspected. There shall be no mechanical damage and loose assembly of parts and screws, and the connector shall operate normally; the pull-in ampere-turns of the longitudinal unit and the horizontal bar, and the holding ampere-turns of the longitudinal unit shall still meet the requirements of Articles 3.10 and 3.11. 4.17 The life test of the connector shall be carried out in accordance with the following provisions. 4.17.1 The connector shall first be inspected for appearance, mechanical adjustment, pull-in ampere-turns, etc., and the inspection data shall be recorded. 4.17.2 Each action of the connector is the action of the conversion horizontal bar and any selection horizontal bar, any vertical unit is pulled in and held, and then the horizontal bar is restored. The test equipment automatically checks whether the cross contact is closed and whether the pointer is operating correctly. If everything is normal, the second action will be started. The test process shall cover all cross contacts and ensure that the probability of the conversion horizontal bar, the selection horizontal bar and the longitudinal unit action is equal. The test action rate of the connector shall not exceed 5 times per second. The test equipment shall automatically give an alarm for faults such as pointer malfunction, cross contact failure to close or separate, and stop the test. The total number of operations of the connector is 3×10 times, and each vertical unit shall operate 3×10° times. 4.17.3 The load of the cross contact shall comply with the provisions of Article 3.23, and the test voltage shall be 60V±5%. 4.17.4
Check the following items after the test.
The cross contact pressure shall still be greater than 0.12N;
The cross contact contact resistance shall not be greater than 0.2; c.
When the horizontal bar is in the balanced position, the pointer shall stay in the middle position, and when the vertical unit is attracted, it shall not cause the pointer to malfunction 8
GB/T3973—1992
The attraction ampere-turns of the vertical unit and the horizontal bar electromagnet shall still comply with the provisions of Articles 3.10 and 3.11; the assembly of the entire connector shall be free of looseness and damage. 5 During the entire life test, the allowable number of failures of the connector should not be greater than that shown in Table 9. 4.17.5
Total number of test actions
(number of connectors × number of actions)
3×107
6×107
Inspection rules
5.1 The acceptance of connectors is divided into acceptance test and routine test. See Table 10 for specific items. Table 10 Acceptance items
Project name
Appearance structure and mechanical adjustment
Appearance, structure
Correctness of action
Weldability
Contact gap
Acceptance test
Group I
Group I
Routine test
Group I
Contact pressure
Coil resistance
Pull-in, hold sensitivity
Vertical unit
Dielectric insulation resistance
Dielectric insulation withstand voltage
Anti-vibration performance
Coil temperature rise
Adaptability to extreme ambient temperature
Adaptability to low air pressure||t t||Moisture resistance
Contact resistance
Time characteristics
Connection time
Contact action synchronization
Release time
Contact bounce
Pointer jitter
Vertical unit action interval time
Allowable number of faults
Technical requirements (clauses of this standard)
Test methods (clauses of this standard)
4.6.2 and 4.6.3
4.7.1, 4.7.2 and 4.7.3
4.7.1~4.7.5
4.7.1, 4.7.2, 4.7.4, 4.7.5
4.7.1, 4.7.1, 4.7.1, 4. 7.6
The acceptance test shall be conducted by the quality management department of the manufacturer according to the items specified in Table 10, and the ordering party has the right to conduct re-inspection. 5.2
The routine test shall be conducted by the quality management department of the manufacturer from the connectors that have passed the acceptance test (the interval between re-sampling shall not exceed three years). The connectors used for routine test shall be divided into three groups and tested according to the items and sequence specified in Table 10. The manufacturer shall be responsible for providing the ordering party with routine test reports. 5.4 During the acceptance and routine tests, if the connector does not meet the technical requirements of this standard and any point specified in the drawings or documents cited in the technical requirements, it shall constitute a defect. A connector with one or more defects shall become a non-conforming product. Defects can be divided into two types according to their nature: light and serious defects. According to the different defects, unqualified products can also be divided into two types of unqualified products: light and serious. The specific classification of defects or unqualified products is determin
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.