GB/T 14819-1993 General technical requirements for electromagnetic DC servo motors
Some standard content:
National Standard of the People's Republic of China
Electromagnetic true DC servomotors
General technical conditions
General specification for wound field DC servomotors1 Subject content and scope of application
GB/T 1481993
This standard specifies the general technical requirements and test methods for electromagnetic DC servomotors (hereinafter referred to as motors). It also makes corresponding provisions for inspection rules, marking, packaging, transportation and storage. This standard is applicable to electromagnetic DC servomotors with a base outer diameter not greater than 160mm. Electromagnetic DC servomotors with a base outer diameter greater than 160mm should also be used as a reference. The specific technical indicators and special requirements of various types of electromagnetic wound field servomotors are specified in the special technical conditions and used together with this standard. When using standards, the following priority order shall be followed: special technical conditions, this standard. 2
Referenced standards
G12423.17 Basic environmental test procedures for electrical and electronic products Test Ka: Salt spray test method GB2828 Batch inspection counting sampling procedure and sampling table (applicable to inspection of continuous batches) GB5872 Technical conditions for packaging of control micromotors GB 7345 Basic technical requirements for control micromotors GB7346 Basic appearance and structural type of control micromotors GB10069.1 Noise determination method for rotating motors and engineering determination method for noise limitation 3 Product classification
3.1 Motor model
The motor model is composed of the following parts:
-Derived code
Performance parameter code
Product name code
Frame size
3.1.1 Frame size
The frame size and the corresponding frame outer diameter are as specified in Table 1. Approved by the State Bureau of Technical Supervision on December 30, 1993 and implemented on October 1, 1994
Machine frame number
Machine outer diameter
Note: 1) is the recommended machine frame number,
3.1.2 Product name code
GB/T 14819-93
Product name code is represented by uppercase Chinese phonetic letters. SZ—Electromagnetic DC servo motor (armature control): 90
SZC—Electromagnetic DC servo motor (field control). 3.1.3 Performance parameter code
The performance parameter code consists of two Arabic numerals 01 to 99. 3.1.4 Derived code
The derived code is represented by uppercase Chinese phonetic letters. 3.1.5 Model example
Derived code
The first performance parameter code
Electromagnetic DC servo motor
(armature control)
The base outer diameter is 90mm
3.2 Basic shape and structure of the motor
The basic shape and structure of the motor should refer to GB7346 or meet the requirements of special technical conditions. 3.3 Circuit diagram
The circuit diagram is shown in Figure 1.
4 Technical requirements
4.1 Environmental conditions for use
The environmental conditions for use of the motor should meet the requirements of Chapter 1 of GB7345. 4.2 Voltage level
The motor adopts 6.9, 12, 24, 27, 48, 60, 110, (180), (200), 220V voltage levels. 4.3 Outlet method, marking and strength
4.3.1 Outlet method
GB/T 14819-93
The outlet method of the motor can be lead-out wire, threaded terminal, terminal block, etc., which shall be specified by the special technical conditions. 4.3.2 Outlet marking
The center of the motor outlet shall be marked on the lead-out threaded terminal and terminal block, and its marking shall comply with the provisions of Table 2. The marking of other outlet methods shall comply with the provisions of the special technical conditions. Table 2
Outlet method
Threaded terminal or terminal block
Lead-out wire www.bzxz.net
4.3.3 Wire strength
Armature winding
Green (blue)
Excitation group
Gray (black)
Frame size
55-~160
Lead-out wire, threaded terminal to terminal block strength should comply with the provisions of Article 3.9 of GB7345. The strength of other outlet methods should comply with the provisions of special technical conditions.
4.4 Appearance and assembly quality
4. 4.1 Appearance
The surface of the motor should not be rusted, dented, scratched, or the coating should not be peeled off. The fasteners should be firmly connected. The lead-out wire or terminal should be intact. The color and markings should be correct. The handwriting and content of the label should be clear and correct, and should not fall off. 4.4.2 Appearance and installation dimensions
The appearance and installation dimensions of the motor shall comply with the provisions of the special technical conditions. 4.4.3 Axial clearance
The axial clearance of the motor shall comply with the provisions of the special technical conditions. 4.4.4 Radial clearance
The radial clearance of the motor shall comply with the provisions of the special technical conditions. 4.4.5 Shaft extension radial runout
The shaft extension radial runout of the motor shall comply with the provisions of the special technical conditions. 4.4.6 Coaxiality of the mounting mating face with the axis The coaxiality of the mounting mating face of the motor shall comply with the provisions of the special technical conditions. 4.4.7 Verticality of the mounting mating end face
The verticality of the mounting mating end face of the motor shall comply with the provisions of the special technical conditions. 4.5 Insulation resistance
Under normal test conditions, the insulation resistance between the conductive part of the motor and the housing should be no less than 100MA. Under the low temperature limit conditions specified in the special technical parts, the insulation resistance should be no less than 50MQ; under the corresponding high temperature conditions, the insulation resistance should be no less than 10MA; after the constant damp heat test, the insulation resistance should be no less than 1MQ. 4.6 Overspeed
The motor should be able to withstand an overspeed test of 1.2 times the maximum rated speed or 1.15 times the load speed (the higher of the two) for 2 minutes without causing harmful deformation.
4.7 Inter-sub insulation
The motor should be able to withstand an inter-sub insulation test of 3 minutes of no-load operation at 130% of the rated voltage without being broken down. 4.8 Direction of rotation
The motor can run in both forward and reverse directions. According to Figure 1, T1.S is connected to the positive, T2.S is connected to the negative, and the rotation direction of the motor should be clockwise from the shaft extension, and the direction is specified as square. In case of double shaft extension, the shaft extension without lead wire (or wiring connection) shall prevail. 4.9 No-load starting voltage
GB/T 14819-93
The no-load starting voltage of the motor shall comply with the provisions of the special technical conditions. 4.10 Through-load current and no-load speed
The no-load current and no-load speed of the motor shall comply with the provisions of the special technical conditions. 4.11 Forward and reverse speed difference
The motor runs at rated current and rated torque; the speed difference between the forward and reverse directions shall comply with the provisions of the special technical conditions. 4.12 Rated data
The rated voltage, rated torque or rated power, rated speed, etc. of the motor shall comply with the provisions of the special technical conditions. During the continuous operation test of the motor, the control of its rated torque is allowed to be replaced by the battery current measured when the motor is running at rated voltage and rated torque in a cold state. 4.13 Commutation
When the motor is running at rated voltage and rated torque, it is allowed to have granular sparks on the edge of the brush, but not tongue-shaped sparks. It is allowed that the brushes have burn marks that will not affect the subsequent operation, and it is allowed that the commutator interlayer 1 has minor burn marks. 4.14 Insulation dielectric strength
The insulation dielectric strength of the motor shall comply with the provisions of Article 3.7 of GB7315, and the leakage current of the winding shall not exceed 5mA. This test shall not be repeated during the acceptance of the motor, but if the user requires, it is allowed to conduct another test, and the test voltage is 80% of the original test voltage.
4.15 Temperature rise
When the motor is running continuously at rated voltage and rated torque, the temperature rise of its winding shall not exceed the provisions of the special technical conditions. 4.16 Noise level
When the motor is running at no-load at rated voltage, the A-weighted sound power level of its noise shall comply with the provisions of the special technical conditions. 4.17 Low temperature
The motor should be able to carry out low temperature test under the low temperature limit conditions specified in the special technical conditions. After the test, check that the insulation resistance of the motor should comply with the provisions of Article 1.5. Check that the no-load starting voltage should not be greater than twice the value specified in Article 4.9. The motor parts should not break or produce harmful deformation.
4.18 High temperature
The motor should be able to carry out high temperature test under the high temperature limit conditions specified in the special technical conditions. During the test, the motor runs at rated voltage and rated torque. After the test, check the insulation resistance and insulation dielectric strength immediately, and the results should comply with the provisions of Articles 4.5 and 4.14. The bearing grease shall not overflow, and the parts shall not break or produce harmful deformation. 4.19 Temperature shock
When the special technical conditions require it, the motor shall be subjected to temperature shock test in accordance with Article 3.16 of GB7345. After the test, check that the rated data of the motor shall comply with the provisions of Articles 4 and 12, and the parts shall not break or produce harmful deformation. 4.20 Low-pressure
When the special technical conditions require it, the motor shall be subjected to low-pressure test. 4.20.1 Low temperature and low pressure
The motor shall be able to be tested in the low temperature and low pressure environment specified in the special technical conditions according to the method specified in the special technical conditions. After the test, check that the insulation resistance of the motor shall comply with the provisions of Article 4.5, check the no-load starting voltage, which shall not be greater than twice the value specified in Article 4.9, and the parts shall not break or produce harmful deformation. 4.20.2 High temperature and low pressure
The motor shall be able to be tested in the high temperature and low pressure environment specified in the special technical conditions according to the method specified in the special technical conditions. After the test, check the insulation resistance and dielectric strength of the motor. The results shall comply with the provisions of Articles 4.5 and 4.14. The bearing grease shall not overflow, and the parts shall not break or produce harmful deformation. 4.21 Vibration
4.21.1 Fixed amplitude vibration
CB/T 14819-93
The motor shall be subjected to the fixed amplitude vibration test in accordance with Article 3.18.1 of GB7345. During the test, the motor shall be able to work normally. After the test, the motor parts shall not be loose or damaged, and the rated data shall comply with the provisions of Article 4.12. 4.21.2 High frequency vibration
When the special technical conditions require it, the motor shall be subjected to the high frequency vibration test in accordance with Article 3.18.2 of GB7315. During the test, the motor shall be able to work normally. After the test, the motor parts shall not be loose or damaged, and the rated data shall comply with the provisions of Article 4.12. 4.22 Impact
4.22.1 Specified pulse impact
The motor shall be subjected to the specified pulse impact test in accordance with Article 3.19.1 of GB 7345. During the test, the motor shall be able to work normally. After the test, the motor parts shall not be loose or damaged, and the rated data shall comply with the provisions of Article 4.12. 4.22.2 Strong impact
When the special technical conditions require it, the motor shall be subjected to the strong impact test in accordance with Article 3.19.2 of GB 7345. During the test, the motor shall be able to work normally. After the test, the motor parts shall not be loose or damaged, and the rated data shall comply with the provisions of Article 4.12. 4.23 Electromagnetic interference
When the special technical conditions require it, the electromagnetic interference of the motor shall not exceed the provisions of Article 3.11 of GB7345. 4.24 Armature rotation inertia
The armature rotation inertia of the motor shall comply with the provisions of the special technical conditions. 4.25 Electromechanical time constant
The electromechanical time constant of the motor shall comply with the provisions of the special technical conditions. 4.26
The weight of the motor shall comply with the provisions of the special technical conditions. 4.27 Heat
4.27.1 Steady damp heat
The motor shall be subjected to a steady damp heat test in accordance with 3.21.1 of GB7345. After the test, the insulation resistance measured in the box shall comply with 4.5. The appearance shall be checked for obvious quality deterioration and rust that affects the operation of the belt. The insulation strength and no-load starting voltage shall comply with 4.14 and 4.9.
4.27.2 Alternating damp heat
When the special technical conditions require it, the motor shall be subjected to an alternating damp heat test in accordance with 3.21.2 of GB7345. After the test, the appearance of the motor should not have obvious quality deterioration and rust that affects the normal operation. After the motor is placed under normal conditions and powered on for 24 ± 4 hours, the insulation resistance should be not less than 50Mn, and the dielectric strength and no-load starting voltage should meet the requirements of 4.14 and 4.9. 4.28 Life
The recommended life of the motor under rated voltage and rated torque should meet the requirements of 3.22 of GB 7345 or the requirements of special technical conditions. During the life test, the motor should be able to work normally. It is allowed to clean the carbon powder every 100 hours. After the test, check the current and speed when the motor returns to the cold state. The change should not exceed 15% compared with the initial change. 4.29 Explosion-proof
When the special technical conditions require it, the motor should be able to work in an environment with explosive gas mixed in the air without causing explosion. 4.30 Salt spray
When the special technical conditions require it, the motor should be able to withstand the salt spray test. After the test, the motor should be disassembled for inspection. No part should have obvious corrosion or destructive deterioration.
5 Test method
5.1 Test conditions
5.1.1 Climate conditions
According to 3.1.1 of GB7345.
..com5.1.2 Test power supply
DC power supply with ripple factor not greater than 3%. 5.1.3 Test instrument and meter accuracy
GB/T 14819-93
Unless otherwise specified, the accuracy of electrical measuring instruments and meters shall not be lower than Class 1 during inspection test and acceptance test, and shall not be lower than 0.5 Class during identification test and periodic test.
5.1.4 Stable temperature
5.1.4.1 Stable temperature without power supply
According to 3.1.5.1 of GB7345.
5.1. 4.2 General stable operating temperature
According to Article 3.1.5.2 of GB7345.
5. 2 Inspection of outlet mode, marking and strength 5.2.1 Inspection of H-line mode
The outlet mode of the motor shall meet the requirements of Article 4.3.1. 5.2.2 Inspection of outlet marking
The outlet marking of the motor shall meet the requirements of Article 4.3.2. 5.2.3 Inspection of outlet strength
The strength of the outlet wire, threaded terminal and terminal block of the motor shall be tested in accordance with Article 3.9 of GB 7345. The strength of other outlet modes shall be tested in accordance with the provisions of special technical conditions, and the results shall meet the requirements of Article 4.3.3. 5.3 Inspection of appearance and assembly quality
5. 3. 1 Appearance
The quality of the external gauge of the motor shall meet the requirements of Article 4.4.1. 5.3.2 Appearance and installation dimensions
Use a measuring tool that can ensure the dimensional accuracy to check the appearance and installation dimensions of the motor, which shall meet the requirements of Article 4.4.2. 5.3.3 Axial clearance
Fix the motor horizontally on the bracket, and apply axial thrusts in opposite directions to the front and rear end covers (or rotating shafts) in turn, so that the stator (or rotating shaft) moves back and forth along the axis. The amount of movement is the axial clearance, and its value shall meet the requirements of the special technical conditions. If the motor bearing and bearing chamber fit too tightly and the axial clearance is difficult to measure, it is allowed to heat the motor for measurement, but the temperature shall not exceed 60'℃
5.3.4 Radial clearance
The motor is firmly installed horizontally with the shaft, and the lower gauge is placed on the shaft as close to the bearing as possible. The force specified in the special technical conditions is applied vertically to the shaft. The light is in one direction and then in the opposite direction. The difference between the two readings of the lower gauge is the radial clearance of the shaft. Its value shall meet the requirements of Article 4.4.4.
5.3.5 Radial runout of shaft extension
It shall be carried out according to the method specified in Article 3.2.4 of GB 7345. Its value shall meet the requirements of Article 4.4.5: 5.3.6 The axiality of the installation fit surface axis shall be carried out according to the method specified in Article 3.2.5 of GB 7345. Its value shall meet the requirements of Article 4.4.6. 5.3.7 Straightness of the installation matching end face
Perform the method specified in Article 3.2.5 of GB 7345, and its value shall meet the requirements of Article 4.4.7. 5.4 Insulation resistance measurement
Perform the method specified in Article 3.8 of GB 7345, and its value shall meet the requirements of Article 4.5. 5.5 Overspeed test
When the motor is unloaded, adjust the control voltage to gradually increase the speed of the motor, and operate it according to the requirements of Article 4.6. The result shall meet the requirements of Article 4.6.
5.6 Turn-to-turn insulation test
GB/T 14819--93
When the motor is unloaded, increase the voltage gradually, and operate it according to the requirements of Article 4.7. The result shall meet the requirements of Article 4.7. 5.7 No-load starting voltage measurement
The motor is no-load, the field winding or armature winding is applied with rated voltage, the armature is at any starting position, the voltage on the control winding is gradually increased from zero evenly and slowly until the shaft starts to rotate continuously, three times in each direction and three times in reverse direction, a total of six times, record the control voltage that makes the shaft start to rotate continuously each time, the maximum value is the no-load starting voltage, and its value should meet the requirements of 4.9. Before the test, the motor shall run at no load for 5 minutes.
5.8 No-load current and no-load speed measurement
The motor runs at no load at rated voltage, and the no-load speed and no-load current are measured. The values shall meet the requirements of Articles 4 and 10. 5.9 Forward and reverse speed difference measurement
The motor runs at rated voltage and rated torque, and the speed difference between the forward and reverse directions is measured. The value shall meet the requirements of Article 4.11. 5.10 Rated data, rotation direction and commutation inspection test Wiring is carried out according to Figure 2. The speed and current in the forward and reverse directions are measured at rated voltage and rated torque. At the same time, the rotation direction and commutation performance are observed. The results shall meet the requirements of Articles 4.12, 4.8 and 4.13 respectively. S
5.11 Insulation dielectric strength test
Perform according to the method specified in Article 3.7 of GB7345, and the results shall meet the requirements of Article 4.14. 5.12 Temperature rise test
During the temperature rise test, the test bracket shall comply with the provisions of the special technical conditions. The motor is operated at rated power and rated torque and the power is turned on to stabilize the working temperature. The temperature rise of the armature winding and the excitation winding is measured by the resistance method. The conditions during the temperature rise test shall comply with the provisions of Article 5.1. The test results shall meet the requirements of Article 4.15.
The temperature rise of the copper winding is determined by the following formula: Winding temperature rise, K;
Where: 6—
=R=R(235+2)+-l
R，—winding resistance at the end of the test, n; R,——winding resistance in cold state,
t—temperature when measuring resistance R,, ℃,
—temperature when measuring core resistance R2, ℃.
The winding resistance K2 is the value measured within 15s after the motor is powered off. If it cannot be measured within 15s, it should be obtained by extending the cooling curve and extrapolating it to 15s after the power is off. 5.13 Noise measurement
It shall be carried out in accordance with the requirements specified in GB10069.1. The test results shall meet the requirements of Article 4.16. 5.14 Low temperature test
GB/T 14819---93
The motor is installed on the test bracket specified in the special technical conditions, and is placed in the test box without power. The box temperature drops to the low temperature limit value specified in the special technical conditions, and the temperature difference is +2°C. Under this condition, the motor reaches the stable temperature without power, and is tested in accordance with the requirements of Article 4.17. The test results shall meet the requirements of Article 4.17.
5. 15 High temperature test
The motor is installed on the test stand specified in the special technical conditions, and placed in the test box without power. The box temperature rises to the high overflow limit value specified in the special technical conditions, and the temperature difference is 10 2. The motor reaches the unpowered stable temperature under this condition, and then runs at the rated voltage and rated torque to the powered stable operating temperature. The test is carried out according to the requirements of Article 4.18, and the results shall meet the requirements of Article 4.18. 5.16 Overtemperature shock test
The test is carried out according to the method specified in Article 3.16 of GB7345, and the test results shall meet the requirements of Article 4.19. 5.17 Low-pressure test
5. 17.1 Low-temperature and low-pressure test
The motor is mounted on the test bracket specified in the special technical conditions and placed in a test box without power. First, the box temperature is lowered to the low-temperature limit value specified in the special technical conditions, with a temperature difference of ±2°C. Under this condition, the motor reaches the stable temperature without power. Then, it is operated at rated voltage and rated torque to the stable operating temperature with power. Then, the air pressure in the test box is lowered to the value specified in the special technical conditions and the test is carried out in accordance with the requirements. After the test, it shall meet the requirements of Article 4.20.1.
5.17.2 High temperature and low pressure test
The motor is installed on the test bracket specified in the special technical conditions. It is placed in the test box without power. First, the box temperature is raised to the high overflow limit value specified in the special technical conditions, with a temperature difference of 2. The motor reaches the stable temperature without power under this condition. Then it is operated at rated voltage and rated torque to the stable working temperature with power. Then the air pressure of the test box is reduced to the value specified in the special technical conditions, and the test is carried out according to its requirements. After the test, it should meet the requirements of Article 1.20.2. 5.18 Vibration test
5.18.1 Fixed amplitude vibration test
It is carried out according to the method specified in Article 3.18.1 of GB7345. The test results should meet the requirements of Article 4.21.1. 5.18.2 High frequency vibration test
It is carried out according to the method specified in Article 3.18.2 of GB7345. The test results should meet the requirements of Article 4.21.2. 5.19 Impact test
5.19.1 Specified pulse impact test
Perform the method specified in Article 3.19.1 of GB7345. The test results shall meet the requirements of Article 4.22.1. 5.19.2 Strong impact test
Perform the method specified in Article 3.19.2 of GB7345. The test results shall meet the requirements of Article 4.22.2. 5.20 Electromagnetic interference test
Perform the method specified in Article 3.11 of GB7345. The test results shall meet the requirements of Article 4.23. 5.21 Measurement of armature moment of inertia
Perform the method specified in Article 3.10 of GB7345. The test results shall meet the requirements of Article 4.24. 5.22 Measurement of electromechanical time constant
The measurement of electromechanical time constant shall be carried out according to the method specified in the special technical conditions. Its value shall meet the requirements of Article 4.25. 5.23 Humidity test
5.23.1 Steady condensation test
Perform the test in accordance with the method specified in 3.21.1 of GB 7345. The result shall meet the requirements of 4.27.1. 5.23.2 Alternating humidity test
Perform the test in accordance with the method specified in 3.21.2 of GB7345. The result shall meet the requirements of 4.27.2. 5.24 Life test
GB/T 14819-93
The motor shall be installed on the test stand specified in the special technical conditions under normal climatic conditions and carried out in accordance with 4.28. The motor shall be changed every 8 hours. Before changing the direction, the current and speed of the motor shall be measured and the commutation shall be observed. Interruptions are allowed during the life test, but the running time shall not be less than 4 hours each time. After the life test, the result shall meet the requirements of 4.28. 5.25 Explosion-proof test
The test shall be carried out according to the force method specified in Article 3.24 of GB7345, and the result shall meet the requirements of Article 4.29. 5.26 Salt spray test
The test shall be carried out according to the method specified in Article 3.17 of GB242, and the result shall meet the requirements of Article 4.30. 5.27 Weight check
Weigh the weight of the motor with a scale with a sensitivity of not less than 1%, and the result shall meet the requirements of Article 4.26. 6 Acceptance rules
6. 1 Test classification
The test is divided into inspection test, acceptance test, verification test and periodic test. 6.2 Inspection test items and rules
Each motor shall be inspected and tested according to the inspection items and basic sequence specified in Table 3. The motor can be put into storage as a qualified product only after all inspection items are qualified.
6.3 Acceptance test items and rules
The acceptance test items are the same as the inspection test items. If the user needs acceptance, it shall be carried out according to the normal inspection-single sampling plan in Table 3 of GB 2828 and the general inspection level 1, where the acceptable quality level (AQL) is 2.5. 6.4 Identification test items and rules
The identification test shall be carried out according to the method specified in Article 4.4 of GB 7345. The test items, basic sequence and prototype number shall be specified by the special technical conditions with reference to Table 3.
6.5 Periodic test items and rules
The periodic test shall be carried out in accordance with the method specified in Article 4.5 of GB7345. The test items, basic sequence and prototype number shall be specified by the special technical conditions with reference to Table 3.
Verification test or synchronous test
Inspection test or drop test
Test items
Wire-out method
Wire-out mark
Appearance and assembly quality
Insulation resistance
Turn-to-turn edge
No-load starting voltage
No-load current and no-load speed
Forward and reverse speed difference
Rated data, rotation direction and commutation
Insulation dielectric strength
Technical requirements
4. 12.4.8.4. 13
Test method
Prototype number
Qualification test
1,2,3+4
1,2,3,4
1,2,3,4
1,2,3,4
I,2,3+4
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3,4
Cycle test
1+2,3,4
1,2,3,4
Identification test or periodic test
Test items
Outgoing wire strength
Temperature shock
Low temperature and low pressure"
High temperature and low pressure
Fixed amplitude vibration
High frequency vibration\
Specified pulse out
23 Strong shock"
Electromagnetic interference
Armature moment of inertia
Machine time constant
Constant damp heat
Alternating damp heat
Explosion-proof!
GB/T14819—93
Continued Table 3
Test method
Technical requirements and clauses
Note: The motor subjected to alternating damp heat test is not subjected to constant damp heat test. Article
1) is a special test and is only carried out when required by the special technical conditions. 7 Quality assurance period
The quality assurance period of the motor shall comply with the provisions of Chapter 5 of GB7345. Article
Prototype number
Identification test
1+2+3,4
1,2,3,4
1,2,3,4
Cycle test
1,2,3,1
1,2,3,4
The storage period of the motor can be stipulated as one year, three years or five years according to the product packaging method, and the specific time shall be stipulated by the special technical conditions. The warranty period of the motor is calculated from the unsealing of the package to be one year or two and a half years (if the working time does not exceed the service life), which shall be stipulated by the special technical conditions according to the specific circumstances.
8 Marking, packaging, transportation and storage
The factory motor should have a nameplate, and the nameplate content should at least include: a.
Model:
Product number:
Manufacturer mark or name.
GB/T 14819-93
8.2 The packaging of the motor should comply with the provisions of GB5872. 8.3 The packaging box or packaging box should be handled with care during transportation to avoid collision and knocking. It is strictly forbidden to put it together with acid, alkali and other corrosive items. 8.4 The motor should be stored in a clean and well-ventilated warehouse with an ambient temperature of -5℃~+30C and a relative humidity of no more than 75%. The air should not contain rolling corrosive gases.
Additional explanation
This standard is proposed by the Ministry of Machinery Industry of the People's Republic of China. This standard is under the jurisdiction of the National Micro Motor Standardization Technical Committee. This standard was drafted by Boshan Motor Factory and Anhui Micromotor Research Institute. The main drafters of this standard are Zhang Xixing, Fan Cheng, Sun Jue and Liu Fugui.
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