JB/T 10273-2001 General technical requirements for AC spindle motors for CNC machine tools
Some standard content:
JB/T 10273--2001
The AC spindle motor used in CNC machine tools can be either an asynchronous motor or a synchronous motor. However, most of them adopt a three-phase differential output motor structure, which is different from ordinary three-phase asynchronous motors, so the standards of three-phase asynchronous motors cannot be applied, and there are no corresponding international standards or standards of advanced foreign countries.
The purpose of this standard is to make domestic products approach the international level and guide the industry to produce. This standard is based on the requirements of JB/T88321999 "General Technical Conditions for Machine Tool Digital Control Systems", the International Electrotechnical Commission IEC60034-1 "Rating and Performance of Rotating Motors" (1996 Edition) and IEC72.1 "Dimensions and Power Levels of Rotating Motors" (1991 Edition), and is compiled with reference to product samples of internationally renowned companies and combined with the production conditions of Chinese enterprises, and is as consistent as possible with the relevant provisions of the above international standards.
This standard is proposed by the National Industrial Automation System and Integration Standardization Technical Committee and is under the jurisdiction of the drafting unit of this standard: Beijing Machine Tool Research Institute. The main drafter of this standard is Li Chengzhao.
This standard was first issued in June 2001
This standard is entrusted to Beijing Machine Tool Research Institute for interpretation. 602
1 Scope
Machinery Industry Standard of the People's Republic of China
AC spindle motors for numerically controlled machine tools
General technical conditions
General specification for A. C, spindle motorsJB/T10273--2001
This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of AC spindle motors for numerically controlled machine tools.
This standard applies to AC spindle motors for numerically controlled machine tools and similar purposes (hereinafter referred to as motors). 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB755-2000 Ratings and performance of rotating electrical machines (idtIEC60034-1: 1996) G13/T1032-1985 = Phase asynchronous motor test methods QB/T2423.3-1993 Basic environmental testing procedures for electrical and electronic products Test Ca: Steady state damp heat test method (eqv IEC 60068-2-3: 1984)
Environmental testing for electrical and electronic products Part 2: Test methods Test and guidance: Mildew growth GB/ 2423. 16-1999
(idt IEC 60068- 2-10: 1988)
Basic environmental testing procedures for electrical and electronic products Test Ka: Salt spray test method GB/T 2423. 17----1993 www.bzxz.net
(eqv IEC 60068-2-11:1981)
GB/T 2828--1987
Batch inspection counting sampling procedure and sampling table (applicable to continuous batch inspection) Enclosure protection degree (IP code) (eqvIEC529:1989) GB4208-1993
Rotating electrical machines Size and output power class Part 1: Frame size 56~~400 and flange size 55~GB/T 4772.1-1999
1 080(idt IFC 72-1:1991)
GB/T 4831
Method for compiling motor product model
GB100682000 Mechanical vibration of motors with shaft center height of 56mm and above Vibration measurement, evaluation and limit values (idt IEC 60034-14:1996)
GB/T10069.11988 Determination method and limit of noise of rotating electrical machines (neq 1SO 61680-1:1986)
Electromechanical product packaging
GB/T 13384--1992
3 Definitions
This standard adopts the following definitions.
3.1 Continuous rated output power
General technical conditions
Noise engineering determination method
Under the condition that the temperature rise of the motor does not exceed the allowable temperature rise, the area where the motor can work for a long time is called the continuous working area. In the continuous working area, the maximum power that the motor can output is called the continuous rated output power. It is referred to as the rated power. Approved by China Machinery Industry Federation on June 4, 2001, and implemented on October 1, 2001
3.2 Rated output power in short-time working system (S2) JB/T10273-2001
The maximum power that the motor can output in the S230min working area. 3.3 Rated output power in continuous cycle working system (S6) The maximum power that the motor can output in the S650% working area (cycle time: 10min; 5min on, 5min off). 3.4 Rated torque
The maximum torque that the motor can output in the continuous working area. 3.5 Rated speed (basic speed)
The speed at which the motor reaches maximum power at rated torque in the continuous working area. 3.6 Maximum speed
The maximum speed allowed by the motor in the continuous working area. 3.7 Rated current
The current of the motor in the continuous working area corresponding to the rated torque. 3.8 Maximum voltage
The voltage between the motor terminals at the rated speed and the maximum power at the point corresponding to the short-time working system (S2). 4 Classification
4.1 Classification
AC spindle motors for machine tools can be divided into AC asynchronous motors and AC synchronous motors. 4.2 Model naming
The model naming of motors shall be in accordance with the provisions of GB/T4831, and shall consist of product code, specification code and supplementary code. 4.2.1 Product code
The product code is represented by capital Chinese phonetic letters: ZJY——represents AC asynchronous motor for spindle; ZJT
-——represents AC synchronous motor for spindle. 4.2.2 Specification code
The specification code is represented by the machine base number (center height) (foot-mounted motor) or flange number (flange-mounted motor) and the machine base length. The installation dimensions and the dimensions of the shaft extension, key and keyway shall comply with the provisions of Tables 1 to 4 in GB/T4772.1-1999. 4.2.3 Supplementary Code
Supplementary code is only used for motors with such requirements (such as specified rated speed or feedback components). Supplementary code is represented by Chinese phonetic letters or Arabic numerals. The meaning of supplementary code shall be explained in the product manual. 4.2.4 Model example
refers to the distance between the axis of the short base bolt through hole), rated speed of the AC spindle asynchronous motor with base installation and frame number 112S (S means short iron core) - 1500r/min: ZJY-112S-1500
Supplementary code
Specification code
Product code
Flange installation, flange number FF115 (FF means there is a through hole on the flange), rated speed of 1500r/min:
ZJY-FF115-1500
Supplementary code
- Specification code
Product code
4.3 Basic appearance structure and installation type
JB/T 10273—2001
The motor installation type is foot installation or flange installation. The basic shaft extension type of the motor is keyway shaft extension. The feedback element can be installed in the rear cover of the motor. 5 Technical requirements
5.1 Environmental adaptability
5.1.1 Climate environmental adaptability
The working climate environmental conditions and storage and transportation climate environmental conditions of the motor are shown in Table 1. Table 1
Ambient temperature Degree
Relative condensation
Atmospheric pressure
5.1.2 Altitude
Working climate conditions
-10～+40℃
30%～95% (no condensation)
86~106kPa
Storage and transportation climate conditions
40~+55℃
95%(40℃)
86~106 kPa
When the altitude does not exceed 1000m, the motor should be able to guarantee various technical indicators. When the altitude exceeds 1000m, the weakening of air cooling effect needs to be considered. At this time, the design and use should be carried out according to the agreement between the manufacturer and the user. 5.2 Appearance and assembly quality
5.2.1 Appearance
The motor surface should not have rust, coating shedding, bumps and scratches, fasteners should be firmly connected, the wiring device markings and nameplates should be clear and correct and should not fall off. 5.2.2 Appearance and installation dimensions
The motor appearance and installation dimensions are shown in Figure 1. 5.2.3 Shaft extension radial runout
The radial runout of the outer circle matching surface of the motor shaft extension should not be greater than that specified in Table 2, and the specific value should be specified in the special technical conditions.
Shaft extension diameter D
>10～18
>18～30
>30~50
>50～80
>80～120
Shaft extension radial runout
JB/T10273—2001
Figure 1 Schematic diagram of motor dimensions
The meanings of each dimension symbol are as follows:
Distance between the axes of the through holes for foot bolts (end view); A
Width of the foot (end view);
ADistance between the outer edges of the foot (end view); Ac
The maximum distance between the motor diameter or the two side surfaces; The distance from the vertical center line of the motor to the edge of the most protruding part of the junction box or other fixed on the side of the motor: The distance between the axes of the through holes for foot bolts;
Foot length;
-Distance between the outer edges of the foot (side view);
JB/T10273—2001
Distance from the shaft extension shoulder to the axis of the nearest foot bolt through hole; shaft extension diameter;
E-shaft extension length from the shaft shoulder;
Width of the keyway at the shaft extension end;
Distance from the bottom of the keyway to the opposite outer cylindrical surface at the shaft extension end; Distance from the top surface of the key to the opposite outer cylindrical surface at the shaft extension end; Height of the key at the shaft extension end:
Depth from outer cylindrical surface to the bottom of keyway; Distance from motor axis to bottom of foot (basic dimension): Foot thickness;
Distance from top surface to bottom of foot of horizontal motor: Distance from top surface of hanger, terminal box or other most protruding parts installed on the top of motor to bottom of foot; Diameter of through hole of foot or width of oblong hole; Total length of motor;
Flange thickness;
Distance from flange mounting surface to end face of motor; L -
Base circle diameter of flange mounting hole;
Four-edge stop diameter;
Flange outer diameter, if not circular, is twice of the maximum radius; Distance from flange mounting surface to shaft extension shoulder;
Diameter of through hole for flange bolts;
— Height of flange stop.
5.2.4 Radial runout of flange stop to motor axis and end face runout of flange mounting face to motor axis The radial runout of flange stop to motor axis and end face runout of flange mounting face to motor axis shall not be greater than the specifications in Table 3. The specific values shall be specified in the special technical conditions. Table 3
Maximum runout
JB/T 10273—2001
5.3 Wiring out method and marking
The wiring out method of the power supply terminal and feedback element of the motor is through the terminal box or plug socket. The terminal shall be clearly marked and shall comply with the provisions of the special technical conditions. 5.4 Electrical performance requirements
This standard only specifies the electrical performance requirements of the AC spindle motor itself. The feedback element installed in the motor shall comply with the requirements of the corresponding standards.
5.4.1 Insulation resistance
Under normal test climate conditions and extreme low temperature conditions specified in special technical conditions, the insulation resistance of each motor winding to the housing and between each winding should be not less than 20MQ, under specified high temperature conditions, the insulation resistance should be not less than 5MQ, and the insulation resistance after the damp heat test should be not less than 1MQ.
The voltage value of the megohmmeter used for insulation resistance inspection should comply with the provisions of Table 4. Table 4
Test voltage during withstand voltage test
500~1000
≥1500
Megohmmeter voltage
5.4.2 Withstand voltage
The motor winding and the housing should be able to withstand the test voltage specified in Table 5 and the withstand voltage test lasting 1min. There should be no insulation breakdown or arcing, and the effective value of the winding leakage current should comply with the provisions of Table 6. The insulation resistance should be measured immediately after the test and should comply with the provisions of 5.4.1. The frequency of the test voltage is 50Hz and it should be a sine wave as far as possible. During factory inspection, the 1min withstand voltage test can be replaced by a 5s test, and the test voltage remains unchanged. When the withstand voltage test is repeated, the test voltage is 80% of the specified value. Table 5
Motor
Rated power 1kw
Rated power>1kW
Frame number or flange number
Effective value of leakage current
5.4.3 No-load current
The no-load current of the motor shall be specified in the special technical conditions. Test voltage (effective value)
500V plus 2 times the maximum voltage
1000V plus 2 times the maximum voltage, but the minimum is 1500V160
5.4.4 Direction of rotation
The motor can rotate in both positive and negative directions. The wiring is connected according to the wiring mark. From the motor shaft extension end, the rotation direction of the motor shaft is counterclockwise and is specified as the positive direction.
5.4.5 Rated speed
The steady-state speed of the motor under rated load in the positive and reverse directions shall be specified in the special technical conditions. 5.4.6 Rated torque
The rated torque of the motor shall be specified in the special technical conditions. 5.4.7 Rated power
The rated power of the motor shall be specified in the special technical conditions. The following data should be selected first: 0.75, 1.1, 1.5, 2.2, 3.7, 5.5, 7.5, 11, 15, 18.5, 22, 30, 37, 45, 55, 75, 90, 110, 132, 150 kW 5.4.8 Maximum voltage
The maximum voltage of the motor shall be specified in the special technical conditions. 608
5.4.9 Maximum speed
JB/T10273--2001
The maximum speed of the motor shall be specified in the special technical conditions. 5.4.10 Rated output power in short-time working system (S230min) The rated output power of the motor in short-time working system (S230min) shall be specified in the special technical conditions. 5.4.11 Rated output power in continuous cycle duty (S650%) The rated output power of the motor in continuous cycle duty shall be specified in the special technical conditions. 5.4.12 Rotor moment of inertia
The rotor moment of inertia of the motor shall be specified in the special technical conditions. 5.4.13 Overspeed
The motor shall be able to withstand a no-load overspeed test of 120% of the maximum speed for 2 minutes. After the test, the rotor shall not have harmful deformation that affects the performance. The performance of the motor is not affected. 5.4.14 Overload capacity
When the motor runs for 2 minutes under a load of 1.2 times the rated output power of the short-time duty (S230min), the temperature rise of the stator winding shall not exceed the provisions of the special technical conditions.
5.4.15 Temperature rise
When the motor winding works continuously in the continuous working area, the temperature rise of the stator winding shall not exceed the provisions of the special technical conditions. 5.4.16 High and low temperature storage
When the special technical conditions require, the motor shall be able to withstand the high and low temperature storage limit temperature test specified in 5.1.1. After the test, the insulation resistance under the high and low temperature limit conditions shall comply with the provisions of 5.4.1, and the motor shall be able to operate normally without load. 5.4.17 Steady damp heat
When the special technical conditions require, the motor shall be able to withstand the steady damp heat test with a severity level of (40 ± 2) °C and a relative humidity of 90% to 95% for 96 hours. Before the test, the motor shaft extension and mounting mating surface shall be coated with anti-rust grease. After the test, the insulation resistance measured in the box shall comply with the provisions of 5.4.1. After the motor is taken out of the box, check that there is no obvious deterioration of the surface quality and rust that affects normal operation.
5.4.18 Noise
The maximum noise of the motor shall not exceed 80dB (A), and the specific value shall be specified in the special technical conditions. 5.4.19 Reliability
The reliability of the motor is measured by the mean trouble-free working time MTBF. The MTBF of the motor should not be less than 10000h. The specific value should be specified in the special technical conditions. After the test, check that the rated speed and rated power of the motor should meet the requirements of 5.4.5 and 5.4.7.
5.4.20 Electromagnetic compatibility (EMC)
When the special technical conditions require, the conducted interference level and radiated interference level of the motor shall not exceed the provisions of Chapter 12 of GB755-2000. If there are higher requirements, they shall be specified in the special technical conditions. 5.4.21 Salt spray
When the special technical conditions require, the motor shall be able to withstand a 48h salt spray test. After the test, the motor shall be disassembled and inspected. No obvious signs of corrosion and destructive deterioration shall be found in any part. 5.4.22 Mildew
When the special technical conditions require, the motor shall be able to withstand a 48h salt spray test. After the test, the motor shall be disassembled and inspected. No obvious signs of corrosion and destructive deterioration shall be found in any part. The motor should be able to withstand a 28-day mildew test, and the mildew after the test shall not exceed the level 2 specified in GB/T2423.16.
5.4.23 Vibration
The effective value of the vibration velocity measured when the motor is unloaded shall not exceed 2.8mm/s, and specific provisions shall be made in the special technical conditions.
5.4.24 Motor housing protection level
The protection level shall be selected in accordance with GB4208, but shall not be lower than IP54, and specific provisions shall be made in the special technical conditions. The motor must be 609
JB/T 10273-2001
It shall be grounded in accordance with the provisions of 10.1 of GB755---2000 and shall be clearly marked. 5.4.25 Mass
The mass (g) of the motor shall comply with the provisions of the special technical conditions. 6 Test method
6.1 Test conditions
6.1.1 Atmospheric conditions for normal tests
All tests shall be carried out under the following climatic conditions unless otherwise specified: Ambient temperature: 15~35℃;
Relative humidity: 45%~~75%;
Air pressure: 86~106 kPa.
6.1.2 Standard atmospheric conditions for arbitration test
When there is a dispute over the test results due to climatic conditions, the test results under the following conditions shall be used as the basis for determining the product: Ambient temperature: (20+1)℃;
Relative humidity: 63%~67%;
Air pressure: 86~106kPa.
6.1.3 Spindle drive unit for test
The AC spindle drive unit used as the test equipment shall comply with the provisions of the relevant standards. 6.1.4 Measuring instruments
During the test, the accuracy of the electrical measuring instruments used shall not be less than 0 .5 level (except megohmmeter), the accuracy of three-machine wattmeter shall not be less than level 1.0, the accuracy of mutual inductor shall not be less than level 0.2, the accuracy of digital speed meter (including decimal frequency meter) shall not be less than 0.1% ± 1 word, the accuracy of torque meter and dynamometer shall not be less than 1%, the accuracy of dynamometer shall not be less than level 1.0, and the error of thermometer shall be within ± 1℃.
When selecting the instrument, the measured value shall be within 20% to 95% of the instrument range. When measuring three-phase power with two wattmeter method, the measured voltage and current values shall be as far as possible not less than 20% of the voltage range and current range of the wattmeter respectively. During the test, the readings of each instrument shall be read at the same time. When measuring three-phase voltage or two-phase current, the average value of the two-phase readings shall be taken as the actual value of the measurement.
6.2 Appearance inspection
The appearance of the motor shall meet the requirements of 5.2.1 when visually inspecting it. 6.3 Check of appearance and installation dimensions
Use measuring tools that can ensure the requirements of dimensional accuracy to check the appearance and installation dimensions of the motor, which shall meet the requirements of 5.2.2. 6.4 Check of radial runout of shaft extension
Measure the radial runout of shaft extension according to the method specified in 9.3.1 of GB/T4772.1-1999, and its maximum value shall meet the requirements of 5.2.3.
6.5 Check of radial runout of flange stop to motor axis According to the method specified in 9.3.2 of GB/T4772.1-1999, the radial runout of flange stop to motor axis shall be measured, and its maximum value shall meet the requirements of 5.2.4.
6.6 Check of end face runout of flange installation surface to motor axis According to the method specified in 9.3.3 of GB/T4772.1·1999, the end face runout of flange installation surface to motor axis shall be measured, and its maximum value shall meet the requirements of 5.2.4.
6.7 Inspection of outlet mode
The outlet mode and marking of the daily inspection motor shall comply with the provisions of 5.3. 6.8 Insulation resistance test
Select the corresponding megohmmeter according to the provisions of 5.1.1, and measure the insulation resistance of each motor winding to the housing and between each winding. The value shall comply with the requirements of 610
5.4.1.
JB/T 10273---2001
6.9 Withstand voltage test
The high-voltage power supply used for the test has a frequency of 50Hz, and the power waveform is as sinusoidal as possible. The power supply power and output impedance shall ensure that there is no significant waveform distortion and significant voltage change under various loads. The test equipment shall be able to distinguish between winding leakage current and surge current. The motor is subjected to the test voltage according to the provisions of 5.4.2. The voltage value shall start from no more than half of the full value of the test voltage, and then gradually increase to the full value evenly or at a step of no more than 5% of the full value. The time for the voltage to increase from half value to full value shall be no less than 10$, and it shall be maintained at the full value for 1 minute. During the entire test process, the voltage peak value shall not exceed 1.5 times the specified effective value, and the fault indicator shall be monitored to determine whether the motor has run-through discharge. And monitor the effective value of the leakage current, which shall comply with the provisions of 5.4.2. At the end of the test, the test voltage shall be gradually reduced to zero to avoid surges. After the test, measure the insulation resistance according to 6.8, which shall comply with the requirements of 5.4.1. 6.10 No-load current test
The motor is operated at no-load and maximum speed, and the no-load current on the stator winding of the motor is measured. Its maximum value shall comply with the provisions of 5.4.3.
6.11 Rotation direction test
The motor and the drive unit form a test device. The motor is wired and powered on according to the provisions of 5.3. When the drive unit is set to positive, the rotation direction of the motor shaft shall comply with the provisions of 5.4.4.
6.12 Rated speed test
The motor and the drive unit form a test device, and the test environment shall not be affected by external radiation and airflow. The drive unit inputs the rated speed command, and then gradually increases the load to the rated value, and continuously runs until the motor temperature rise is stable. Under the condition that the motor temperature rise does not exceed the provisions of 5.4.15, the speed measured at this time shall comply with the requirements of 5.4.5. 6.13 Rated torque test
The motor and the drive unit form a test device, and the test environment shall not be affected by external radiation and airflow. The drive unit inputs the rated speed command, and then gradually increases the load to the rated value, and continuously runs until the motor temperature rise is stable. Under the condition that the motor temperature rise does not exceed the provisions of 5.4.15, the maximum torque at the rated speed is measured, and its value shall comply with the provisions of 5.4.6. 6.14 Rated power test
The motor and the drive unit form a drive device, and the test environment shall not be affected by external radiation and airflow. The motor is applied with rated torque at rated speed and continuously operated until the temperature rise of the motor is stable. Under the condition that the temperature rise of the motor does not exceed the provisions of 5.4.15, the output power value of the motor shall comply with the provisions of 5.4.7.
6.15 Maximum speed test
The motor and the drive unit form a drive device, and the test environment shall not be affected by external radiation and airflow. Apply the maximum torque allowed at the highest speed to the motor shaft, and gradually increase the speed to the specified value of 5.4.9, and continue to operate until the temperature rise of the motor is stable. Check that the temperature rise of the motor should be within the specified range of 5.4.15. 6.16 Rated output power test and maximum voltage test during short-term operation (S230min) The motor and the drive unit form a test device, the motor runs at rated speed and applies the rated output power specified in 5.4.10: Continuously operate for 30min, the temperature rise of the motor should not exceed the provisions of 5.4.15. At the same time, the voltage between the motor terminals shall meet the requirements of 5.4.8.
6.17 Rated output power test during continuous cycle T. (S650%) The motor and drive unit form a test device. The motor runs at rated speed and applies the rated output power specified in 5.4.11. Then it works continuously for 2 hours with a load cycle time of 10 minutes and a load duration of 50%. The temperature rise of the motor should not exceed the provisions of 5.4.15.
6.18 Rotor inertia test
The motor inertia is tested in accordance with the provisions of Chapter 18 of G13/T10321985. The results should comply with the provisions of 5.4.12. 6.19 Overspeed test
The speed of the tested motor can be increased to 1.2 times the maximum speed by using other motors to drag the tested motor. It runs at no load for 2 minutes. The results should comply with the provisions of 5.4.13. 611
6.20 Overload capacity test
JB/T 10273--2001
The motor runs for 2 minutes under a load of 1.2 times the rated output power of the short-time working system (S230nin). The temperature rise of the motor should not exceed the provisions of 5.4.15.
6.21 Temperature rise test
The temperature of the motor winding is measured by the resistance method. The motor and the drive unit form the test device, and the test environment should not be affected by external radiation and airflow.
The motor is placed at room temperature and reaches a stable temperature when it is not powered on. The cold stator winding resistance R, is measured, and the room temperature 8, is recorded at this time. Then the motor is operated at the rated power point until the temperature rise of each part of the motor reaches the thermal stable state. During the test, the voltage, current and input power of the tested motor, as well as the temperature of the stator core, bearings, cooling medium at the inlet and outlet of the air duct and the surrounding cooling medium are recorded every 30 minutes. When the thermal stable state is reached, the hot stator winding resistance R2 is measured, and the room temperature 0 is recorded at this time. In order to shorten the test time, the overload can be appropriately applied at the beginning of the temperature rise test. The temperature rise is calculated according to formula (1) and shall comply with the requirements of 5.4.15. 0g 0 =RR ×(235 +0)+ - 0.
The temperature when the initial resistance of the winding (cold state) is measured, ℃; where:
The temperature of the winding at the end of the thermal test, ℃; 8,
The temperature of the cooling medium at the end of the thermal test, ℃;
R,—-The winding resistance at a temperature of 8 (cold state), 2; (1)
R…-The winding resistance at the end of the thermal test. The above-mentioned temperature measurement at the end of the thermal test requires rapid shutdown, careful operating procedures and sufficient personnel. If the winding resistance reading is measured within 30s after the motor is cut off from the power supply, it can be directly used as the data for temperature rise calculation. If it exceeds 30S, its correction shall be in accordance with the provisions of GB755.
The correction of the temperature rise limit when the altitude or ambient air temperature of the test site is different shall be in accordance with the provisions of GB755. 6.22 High and low temperature storage test
This test shall be carried out only when the special technical conditions require it. 6.22.1 High temperature storage test
Place the motor in a high temperature box, raise the temperature in the box to (55±2)℃, reach thermal equilibrium (generally speaking, not less than 1h), keep the temperature in the box constant, and place the motor without power for 4h. Measure the insulation resistance immediately after the test period, which should meet the requirements of 5.4.1. Then, gradually reduce the temperature to normal atmospheric conditions and place it under this condition for 4h. The cooling time in the box does not count the placement time. Then check the appearance and power on, and the motor should be able to work normally. 6.22.2 Low temperature storage test
Place the motor in a low temperature box and lower the temperature inside the box to -(40±2)℃. After reaching thermal equilibrium (for example, not less than 1h), keep the temperature inside the box constant and place the motor without power for 4h. Measure the insulation resistance immediately after the test period and it should meet the requirements of 5.4.1. Then, gradually raise the temperature to normal atmospheric conditions and place it under this condition for 4h. The temperature rise time in the box does not count the placement time. Then check the appearance and turn on the power. The motor should be able to work normally. 6.23 Constant humidity and heat test
This test is only carried out when required by special technical conditions. The motor shaft extension and mounting mating surface are coated with anti-rust grease and the constant humidity and heat test is carried out according to the provisions of GB/T2423.3-:1993. The severity level is in accordance with the provisions of 5.4.17. After the test, it should meet the requirements of 5.4.17 and 5.4.1. 6.24 Noise test
The motor is running at no load at the highest speed. The noise of the motor is measured according to the provisions of GB/T10069.1. It should meet the requirements of 3.4.18.
6.25 Reliability test
The motor is tested for reliability according to Table 7 at half the rated power and half the rated speed. In each installation position, the motor changes its rotation direction every 8 hours. Continuous test time exceeding 4 hours can be accumulated. After the test, the motor should meet the requirements of 5.4.19612
.
Rated power of motor
6.26 Electromagnetic compatibility test
JB/T10273-2001
Installation position
Downward, horizontal
Time allocation
Downward, horizontal each occupy 1/2
Total time
When the special technical conditions require, the electromagnetic compatibility test inspection shall be carried out in accordance with the provisions of Chapter 12 of GB755-2000, and shall comply with the provisions of 5.4.20.
6.27 Salt spray test
When the special technical conditions require, the salt spray test shall be carried out in accordance with the method specified in GB/T2423.17. After the test, the motor shall comply with the provisions of 5.4.21.
6.28 Mildew test
When the special technical conditions require it, the mildew test shall be carried out according to the force method specified in GB/T2423.16. After the test, the motor shall comply with the requirements of 5.4.22.
6.29 Vibration test
The vibration test shall be carried out according to the method specified in GB10068. The test results shall comply with the requirements of 5.4.23. 6.30 Enclosure protection grade test
The enclosure protection grade test shall be carried out according to the relevant provisions of GB4208 and shall comply with the requirements of 5.4.24. And check the grounding of the motor according to the requirements of 5.4.24.
6.31 Mass
The mass (g) of the motor shall be weighed with a scale with an inductance of not less than 1%, which shall comply with the requirements of 5.4.25. 7
Inspection rules
Inspection classification
The inspection of motors is divided into factory inspection and type inspection. 7.2 Factory inspection items and rules
Factory inspection items shall comply with the provisions of Table 8.
Appearance and installation dimensions
Radial runout of shaft extension
Radial runout of flange stop to axis
End face runout of flange installation surface to axis
Wire outlet method and marking
Insulation resistance
Withstand voltage test
No-load current
Direction of rotation
Technical requirements
Test method
Test sample number
1,2,3,4
1,2,3,4
1,2,3,4
Export inspection
Type inspection1. Then, gradually lower the temperature to normal atmospheric conditions and place it under this condition for 4 hours. The cooling time in the box does not count the placement time. Then check the appearance and turn on the power. The motor should be able to work normally. 6.22.2 Low temperature storage test
Place the motor in a low temperature box and lower the temperature in the box to -(40±2)℃. After reaching thermal equilibrium (generally, not less than 1h), keep the temperature in the box constant and place the motor without power for 4h. Measure the insulation resistance immediately after the test period and it should meet the requirements of 5.4.1. Then, gradually raise the temperature to normal atmospheric conditions and place it under this condition for 4 hours. The heating time in the box does not count the placement time. Then check the appearance and turn on the power. The motor should be able to work normally. 6.23 Constant humidity test
This test is only carried out when required by special technical conditions. The motor shaft extension and mounting mating surface are coated with anti-rust grease, and the constant humidity and heat test is carried out according to the provisions of GB/T2423.3-:1993, and the severity level is in accordance with the provisions of 5.4.17. After the test, it shall meet the requirements of 5.4.17 and 5.4.1. 6.24 Noise test
The motor is running at no load at the highest speed, and the noise of the motor is measured according to the provisions of GB/T10069.1, which shall meet the requirements of 3.4.18.
6.25 Reliability test
The motor is subjected to reliability test according to Table 7 at half rated power and half rated speed. At each mounting position, the motor changes its rotation direction every 8 hours. Continuous test time exceeding 4 hours can be accumulated. After the test, the motor shall meet the provisions of 5.4.19612
.
Rated power of motor
6.26 Electromagnetic compatibility test
JB/T10273-2001
Installation position
Downward, horizontal
Time allocation
Downward, horizontal each occupy 1/2
Total time
When the special technical conditions require, the electromagnetic compatibility test inspection shall be carried out in accordance with the provisions of Chapter 12 of GB755-2000, and shall comply with the provisions of 5.4.20.
6.27 Salt spray test
When the special technical conditions require, the salt spray test shall be carried out in accordance with the method specified in GB/T2423.17. After the test, the motor shall comply with the provisions of 5.4.21.
6.28 Mildew test
When the special technical conditions require it, the mildew test shall be carried out according to the force method specified in GB/T2423.16. After the test, the motor shall comply with the requirements of 5.4.22.
6.29 Vibration test
The vibration test shall be carried out according to the method specified in GB10068. The test results shall comply with the requirements of 5.4.23. 6.30 Enclosure protection grade test
The enclosure protection grade test shall be carried out according to the relevant provisions of GB4208 and shall comply with the requirements of 5.4.24. And check the grounding of the motor according to the requirements of 5.4.24.
6.31 Mass
The mass (g) of the motor shall be weighed with a scale with an inductance of not less than 1%, which shall comply with the requirements of 5.4.25. 7
Inspection rules
Inspection classification
The inspection of motors is divided into factory inspection and type inspection. 7.2 Factory inspection items and rules
Factory inspection items shall comply with the provisions of Table 8.
Appearance and installation dimensions
Radial runout of shaft extension
Radial runout of flange stop to axis
End face runout of flange installation surface to axis
Wire outlet method and marking
Insulation resistance
Withstand voltage test
No-load current
Direction of rotation
Technical requirements
Test method
Test sample number
1,2,3,4
1,2,3,4
1,2,3,4
Export inspection
Type inspection1. Then, gradually lower the temperature to normal atmospheric conditions and place it under this condition for 4 hours. The cooling time in the box does not count the placement time. Then check the appearance and turn on the power. The motor should be able to work normally. 6.22.2 Low temperature storage test
Place the motor in a low temperature box and lower the temperature in the box to -(40±2)℃. After reaching thermal equilibrium (generally, not less than 1h), keep the temperature in the box constant and place the motor without power for 4h. Measure the insulation resistance immediately after the test period and it should meet the requirements of 5.4.1. Then, gradually raise the temperature to normal atmospheric conditions and place it under this condition for 4 hours. The heating time in the box does not count the placement time. Then check the appearance and turn on the power. The motor should be able to work normally. 6.23 Constant humidity test
This test is only carried out when required by special technical conditions. The motor shaft extension and mounting mating surface are coated with anti-rust grease, and the constant humidity and heat test is carried out according to the provisions of GB/T2423.3-:1993, and the severity level is in accordance with the provisions of 5.4.17. After the test, it shall meet the requirements of 5.4.17 and 5.4.1. 6.24 Noise test
The motor is running at no load at the highest speed, and the noise of the motor is measured according to the provisions of GB/T10069.1, which shall meet the requirements of 3.4.18.
6.25 Reliability test
The motor is subjected to reliability test according to Table 7 at half rated power and half rated speed. At each mounting position, the motor changes its rotation direction every 8 hours. Continuous test time exceeding 4 hours can be accumulated. After the test, the motor shall meet the provisions of 5.4.19612
.
Rated power of motor
6.26 Electromagnetic compatibility test
JB/T10273-2001
Installation position
Downward, horizontal
Time allocation
Downward, horizontal each occupy 1/2
Total time
When the special technical conditions require, the electromagnetic compatibility test inspection shall be carried out in accordance with the provisions of Chapter 12 of GB755-2000, and shall comply with the provisions of 5.4.20.
6.27 Salt spray test
When the special technical conditions require, the salt spray test shall be carried out in accordance with the method specified in GB/T2423.17. After the test, the motor shall comply with the provisions of 5.4.21.
6.28 Mildew test
When the special technical conditions require it, the mildew test shall be carried out according to the force method specified in GB/T2423.16. After the test, the motor shall comply with the requirements of 5.4.22.
6.29 Vibration test
The vibration test shall be carried out according to the method specified in GB10068. The test results shall comply with the requirements of 5.4.23. 6.30 Enclosure protection grade test
The enclosure protection grade test shall be carried out according to the relevant provisions of GB4208 and shall comply with the requirements of 5.4.24. And check the grounding of the motor according to the requirements of 5.4.24.
6.31 Mass
The mass (g) of the motor shall be weighed with a scale with an inductance of not less than 1%, which shall comply with the requirements of 5.4.25. 7
Inspection rules
Inspection classification
The inspection of motors is divided into factory inspection and type inspection. 7.2 Factory inspection items and rules
Factory inspection items shall comply with the provisions of Table 8.
Appearance and installation dimensions
Radial runout of shaft extension
Radial runout of flange stop to axis
End face runout of flange installation surface to axis
Wire outlet method and marking
Insulation resistance
Withstand voltage test
No-load current
Direction of rotation
Technical requirements
Test method
Test sample number
1,2,3,4
1,2,3,4
1,2,3,4
Export inspection
Type inspection
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