JB/T 5866-2004 General technical requirements for wide speed adjustable permanent magnet DC servo motors
Some standard content:
ICS29.160.30
Machinery Industry Standard of the People's Republic of China
JB/T5866—2004
Replaces JB/T5866-—1991
General specification for wide-regulating-speed permanent magnet DC servo motors DCservomotor
2004-03-12Release
2004-08-01Implementation
The National Development and Reform Commission of the People's Republic of China issued JB/T5866-2004
Foreword,
Normative reference documents
Terms and definitions
Motor model,
Rated data and insulation grade
Structural type.…
Electrical schematic diagram.
Technical requirements,
Useful environment conditions
Wire outlet mode and wire outlet mark
Appearance and assembly quality
Insulation dielectric strength,
Insulation Resistance..
Direction of rotation..
Forward and reverse speed difference
No-load starting voltage,
Back electromotive force coefficient,
DC resistance.
Static friction torque,
Rated current,
Commutation spark.
Thermal time constant
Rated power.
Armature moment of inertia
Mechanical time constant,
Electrical time constant.
Torque fluctuation coefficient,
Current overload multiple
Electromagnetic disturbance (electromagnetic interference)
Vibration,
Impact,
Constant damp heat
Life,
Salt Fog,
Test method.
Test conditions..
Appearance and assembly quality
Insulation dielectric strength,
Insulation resistance
Direction of rotation..
Forward and reverse speed difference.
No-load starting voltage..
Back electromotive force coefficient,
DC resistance,
Static friction torque
Rated current
Commutation spark.
Thermal time constant
Rated power
Armature moment of inertia
Mechanical time constant,
Electrical time constant.
Torque fluctuation coefficient.
Current overload multiple||t t||Electromagnetic disturbance (electromagnetic interference)
High temperature,
Impact,
Steady-state damp heat
Weight,
Inspection rules..www.bzxz.net
Inspection classification
Quality assurance period
Marking, packaging, transportation and storage
Appendix A (Normative Appendix) Structure, material and dimensions of temperature rise test bracket A.1 End face flange installation structure
A.2 Foot installation structure
JB/T5866—2004
JB/T5866—2004
This standard is a revision of JB/T5866-1991 "General Technical Conditions for Wide Speed Regulation Permanent Magnet DC Servo Motors". Compared with JB/T5866-1991, this standard has the following major changes: The standard writing format is rewritten with reference to the requirements of GB/T1.1-2000 "Guidelines for Standardization Work Part 1: Structure and Writing Rules of Standards".
The standards GB/T2806 "Measurement Method of Motor Noise", GB/T5872 "Technical Conditions for Control Micro Motor Packaging", GB/T7345 "Basic Technical Requirements for Control Micro Motors", and GB/T10405 "Model Naming Method of Control Motors" cited in JB/T5866-1991 have all been revised. This standard refers to their revised versions (see JB/T5867-2004). 一 The original referenced standards GB/T755 "Basic Technical Requirements for Rotating Motors": GB/T2807 "Measurement Method of Motor Vibration": GB/T2900.26 "Electrical Terminology Control Motors" are no longer cited in this standard because the cited words do not appear in the specific description of the standard.
- The original standard covers a narrow range of environmental conditions, which is now changed to "should comply with the provisions of Class 1 or Class 2 in Table 1 of 4.1.1 of GB/T7345-1994. The environmental conditions for the use of motors can also be in accordance with the provisions of 4.1.2 of GB/T7345--1994." - The temperature rise limit of the motor in this standard is changed to be specified by special technical conditions. In this standard, according to the requirements of GB/T755-2000, the commutation spark of the motor is no longer classified, and only descriptive provisions are made. - Torque fluctuation has increased recommended values.
In this standard, "overload" is changed to "current overload multiple" for the sake of consistency. In the first standard, the electromagnetic disturbance (electromagnetic interference) index is added. Only the "electromagnetic disturbance" index is listed, and the "anti-disturbance" index is not included because it is not required.
According to the requirements of GB/T7345-1994, the requirements and test methods of self-vibration have been deleted, the fixed amplitude vibration and the specified pulse shock have been changed to vibration and shock, and the requirements and test methods of salt spray have been added. The stable temperature no longer appears in this standard because it has been defined in GB/T2900.26 "Electrical Terminology Control Motor". The original reference GB/T7345, and the revised GB/T73451994 "Basic Technical Requirements for Controlling Micromotors" no longer have this clause.
The experimental classification is classified according to GB/T7345-1994. The printing errors in the original standard have been corrected.
This standard replaces JB/T5866-1991.
Appendix A of this standard is a normative appendix.
This standard is proposed by the China Machinery Industry Federation. This standard is under the jurisdiction of the National Micromotors Standardization Technical Committee. The drafting units of this standard are: Xi'an Micromotors Research Institute and Guilin Electric Science Research Institute. The main drafters of this standard are Shao Xiaoqiang, Tan Ying and Chen Housong. The previous versions of the standards replaced by this standard are: -JB/T5866-1991.
1 Scope
General technical conditions for wide speed-adjustable permanent magnet DC servo motors JB/T5866-2004
This standard specifies the general technical requirements, test methods, inspection rules, quality assurance period and marking, packaging, transportation and storage requirements for wide speed-adjustable permanent magnet DC servo motors. This standard applies to wide speed-adjustable permanent magnet DC servo motors (hereinafter referred to as motors). Normative references
The clauses in the following documents become the clauses of this standard through reference in this standard. For all dated references, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, the parties to the agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For all undated references, the latest versions are applicable to this standard. GB/T7345—1994
GB/T10069.1-—1988
GB/T10405—2001
JB/T8162—1999
3 Terms and definitions
Basic technical requirements for control micromotors
Determination method and limit of noise of rotating motors
【Noise engineering determination method (negISo1680-1:1986) Control motor model naming method
Technical conditions for control micromotors packaging
The following terms and definitions apply to this standard. 3.1
Rated power
output
The maximum power that the motor can output in the continuous working range. 3.2
Rated torque
torque
The maximum torque that the motor can output in the continuous working range. 3.3
Rated current
current
In the continuous working area, the current corresponding to the rated torque. 3.4
1operationspeed
Maximum operating speed
maximum
The maximum speed allowed for the motor to operate.
1voltage
Maximum voltage
maximum
When the motor is unloaded, the armature terminal voltage corresponding to the maximum operating speed. 4 Classification
4.1 Motor model
4.1.1 Model composition
According to the provisions of GB/T10405, the motor model consists of four parts: frame number, product name code, performance parameter serial number and derived code.
JB/T5866-2004
Model example
4.1.3 Frame number
First derived code
First performance parameter code
Frame number of wide speed-adjustable permanent magnet DC servo motor with tachometer, indicating that the frame outer diameter is 130mm
Frame number is indicated by the outer diameter of the motor housing (core segment) (unit: mm). 4.1.4 Product name code
The product name code uses capital Chinese pinyin letters SZK to indicate wide speed-adjustable permanent magnet DC servo motor, which means: S represents servo motor, Z represents DC, and K represents wide speed regulation. For the unit form, the product name code is represented by SZK, C represents tachometer, X represents resolver, M represents encoder, and Z represents brake.
When the motor is equipped with more than two components, the order of the symbols representing each component added after SZK is C, X, M, and Z. 4.1.5 Performance parameter code
The performance parameter code is represented by two Arabic numerals 01 to 99. 4.1.6 Derived code
The derived code uses the Chinese phonetic letters "A", "B", "C" and so on to represent the performance or structural derivation, but the letters "I" and "0" shall not be used.
Rated data and insulation level
In the special technical conditions of the motor, the insulation level and the following rated data shall be listed: a)
Rated power, unit is W:
Rated torque, unit is N·m:
Rated current, unit is A:
Maximum operating speed, unit is r/min;
Maximum voltage, unit is V.
4.3 Structural type
The structural type is end flange installation or foot installation. 4.4 Electrical schematic diagram
The electrical schematic diagram is shown in Figure 1.
5 Technical requirements
Environmental conditions for use
The environmental conditions for use of the motor shall comply with the requirements of level 1 or level 2 in table 1 of 4.1.1 of GB/T7345-1994, or according to the requirements of 4.1.2 of GB/T7345-2
1994
Wire-out method and wire-out marking
JB/T5866—2004
The lead wires of the motor can be directly led out, or can be led out through a terminal board, a terminal post or a special plug socket, which shall be specified by the special technical conditions. The lead wires shall be clearly marked and shall comply with the requirements of the special technical conditions. 5.3 Appearance and assembly quality
5.3.1 Appearance
The appearance of the motor shall comply with the requirements of 4.3 of GB/T73451994. 5.3.2 Brush running-in quality
The brush running-in surface should not be less than two-thirds, and the specific value should comply with the special technical conditions. 5.3.3 Appearance and installation dimensions
The appearance and installation dimensions of the motor should comply with the special technical conditions. 5.3.4 Axial clearance
The axial clearance of the motor should comply with the provisions of Table 1, frame size
Axial clearance
Radial runout of shaft extension
90~160
Radial runout of the outer circle matching surface of the motor shaft extension should comply with the provisions of Table 2 Table 2
Frame size
Radial runout of shaft extension
≤160
The coaxiality of the mounting matching surface and the perpendicularity of the mounting matching end face to the axis 5.3.6
The coaxiality of the mounting matching surface to the axis and the perpendicularity of the mounting matching end face to the axis should comply with the provisions of Table 3. Table 3
Frame size
Coaxiality of mounting mating surface
Verticality of mounting mating end surface
5.4 Insulation dielectric strength
130~200
The insulation dielectric strength test between the motor winding and the housing should be able to withstand the test voltage specified in Table 4, and there should be no breakdown or arcing, and the winding should not be greater than 10mA.
The peak leakage current is specified by the special technical conditions, Table 4
Motor
Rated power less than 1kW and maximum voltage less than 100V: Maximum voltage less than 36V
Rated power not less than 1kW and maximum voltage not less than 36V: Maximum voltage not less than 100V
Repeat this test, and the test voltage should be 80% of the first test voltage. Test voltage (effective value)
500V plus 2 times the highest voltage
1000V plus 2 times the highest voltage. But the minimum is 1500V3
JB/T5866-2004
5.5 Insulation resistance
Under normal test climate conditions, the insulation resistance between the conductive part of the motor and the housing should not be less than 100M2: Under the extreme low temperature conditions specified in the special technical conditions, the insulation resistance should not be less than 50MS2: Under the corresponding high temperature conditions, the insulation resistance should not be less than 5M2: After the wet heat test, the insulation resistance is not less than 2MQ. 5.6 Rotation direction
The motor can run in both positive and negative directions. The wiring is based on the outlet markings. From the shaft extension end, the clockwise rotation direction of the motor shaft is the positive direction. 5.7 Positive and negative speed difference
Apply the highest voltage to the motor and measure the no-load speed in both positive and negative directions. The ratio of the difference between the no-load speed in the positive and reverse directions to the average no-load speed is the positive and reverse speed difference rate. Its value should not exceed 1%. 5.8 No-load starting voltage
The no-load starting voltage of the motor should not be greater than 1V plus 2% of the maximum voltage of the motor. 5.9 Overspeed
The motor should be able to withstand an overspeed test of 1.2 times the maximum operating speed for 2 minutes, and the armature should not have harmful deformation that affects the performance. 5.10 Back electromotive force coefficient
The back electromotive force coefficient of the motor should comply with the provisions of the special technical conditions. 5.11 DC resistance
The DC resistance with brushes of the motor should comply with the provisions of the special technical conditions. 5.12 Static friction torque
The static friction torque of the motor should comply with the provisions of the special technical conditions. 5.13 Rated current
The rated current of the motor should comply with the provisions of the special technical conditions. 5.14 Temperature rise
The temperature rise limit of the armature winding of the motor should comply with the provisions of the special technical conditions. 5.15 Commutation sparks
When the motor is running in the continuous working area, no harmful sparks should be generated, and no permanent damage should be caused to the commutator surface or brush surface (measured in both positive and negative directions).
5.16 Thermal time constant
The thermal time constant of the motor shall comply with the provisions of the special technical conditions. 5.17 Rated power
The rated power and corresponding speed of the motor shall comply with the provisions of the special technical conditions. 5.18 Armature moment of inertia
The moment of inertia of the motor shall comply with the provisions of the special technical conditions. 5.19 Mechanical time constant
The mechanical time constant of the motor shall comply with the provisions of the special technical conditions. 5.20 Electrical time constant
The electrical time constant of the motor shall comply with the provisions of the special technical conditions. 5.21 Torque fluctuation coefficient
The torque fluctuation coefficient of the motor shall comply with the provisions of the special technical conditions. The following values are recommended for the torque fluctuation coefficient: 5%, 7%, 10%. 5.22 Current overload multiple
The current overload multiple of the motor shall comply with the provisions of the special technical conditions. 5.23 Noise
When the motor frame size is not greater than 130, the A-weighted sound power level noise shall not be greater than 75dB: When the motor frame size is greater than 130, the A-weighted sound power level noise shall not be greater than 80dB.
5.24 Electromagnetic disturbance (electromagnetic interference)
JB/T5866-2004
When the special technical conditions have requirements, the motor shall work under the conditions specified in the special technical conditions, and the conducted disturbance and radiated disturbance generated shall comply with the provisions of 4.31 of GB/7345-1994. 5.25 Low temperature
The motor shall be subjected to low temperature test under the extreme low temperature conditions specified in the special technical conditions. After the test, the insulation resistance under low temperature conditions shall comply with the provisions of 5.5. Check that the no-load starting voltage is not more than twice the value specified in 5.8. 5.26 High temperature
The motor shall be subjected to high temperature test under the high temperature conditions specified in the special technical conditions. After the test, the insulation resistance under high temperature conditions shall comply with the provisions of 5.5. After the motor cools to room temperature, measure the no-load speed at the highest voltage. The change in no-load speed at the highest voltage after the high temperature test and before the low temperature test shall not exceed 2% of the speed before the low temperature test. 5.27 Vibration
The motor shall be able to withstand the vibration test under the environmental conditions of level 1 and level 2 specified in 4.25 of GB/T7345-1994. After the test, the motor shall not have loose parts or mechanical damage. 5.28 Impact
The motor should be able to withstand the impact test of level 1 and level 2 environmental conditions specified in 4.26 of GB/T7345-1994, and the impact test should be carried out 15 times in both the positive and negative directions of the motor radial direction, a total of 30 times. After the test, the motor should not have loose parts or mechanical damage. 5.29 Steady damp heat
The motor should be able to withstand the steady damp heat test specified in 4.28.1 of GB/T7345--1994. After the test, the damp heat insulation resistance should be checked to meet the requirements of 5.5, and the motor should not have obvious deterioration of appearance quality and rust that affects normal operation. 5.30 Life
The life of the motor should meet the requirements of the special technical conditions. The change in rated current after the test should not exceed 15% of that before the start of the life test. 5.31 Salt spray
When the special technical conditions require it, the motor should be subjected to salt spray test in accordance with the provisions of 4.32 of GB/T7345-1994. After the test, the motor is disassembled for inspection, and no part should have obvious corrosion and destructive deterioration. 5.32 Weight
The weight of the motor should meet the requirements of the special technical conditions. 6 Test method
6.1 Test conditions
6.1.1 Normal test atmospheric conditions
According to the provisions of 5.1.1 of GB/T7345-1994. 6.1.2 Standard atmospheric conditions for arbitration test
According to the provisions of 5.1.2 of GB/T7345-19946.1.3 Benchmark standard atmospheric conditions
According to the provisions of 5.1.3 of GB/T7345-19946.1.4 Test power supply
6.1.4.1 The ripple factor of the DC power supply shall not exceed 5%. 6.1.4.2 The voltage instability shall not exceed 2%
6.1.5 Test instrument accuracy
6.1.5.1 The accuracy level of the ammeter and voltmeter is 0.5. 6.1.5.2 The accuracy of the tachometer is 1.
6.1.5.3 The accuracy of the torque test device is 1%. 6.2 Appearance and assembly quality
6.2.1 Appearance
JB/T5866—2004
Visually inspect the appearance of the motor, which shall meet the requirements of 5.3.1. 6.2.2 Brush running-in quality
Inspect the brush running-in quality, which shall meet the requirements of 5.3.2. 6.2.3 Appearance and installation dimensions
Use a measuring tool that can ensure the accuracy requirements to inspect the appearance and installation dimensions of the motor, which shall meet the requirements of 5.3.3. 6.2.4 Axial clearance
Inspect according to the method specified in 5.5 of GB/7345-1994. The thrust applied to the shaft shall be in accordance with the provisions of Table 5. The axial clearance value shall meet the requirements of 5.3.4.
Frame size
Axial thrust
Radial runout of shaft extension
According to the method specified in 5.6 of GB/T7345-1994, its value shall meet the requirements of 5.3.5. 6.2.6 The coaxiality of the installation matching surface to the axis and the verticality of the installation matching end surface to the axis shall be carried out according to the methods specified in 5.7 and 5.8 of GB/T7345-1994, and its value shall meet the requirements of 5.3.6. Insulation dielectric strength
According to the method specified in 5.17 of GB/T7345-1994, it shall meet the requirements of 5.4. 6.4 Insulation resistance
Use the insulation resistance meter specified in Table 6 to check the insulation resistance between the conductive part of the motor and the housing. The result should meet the requirements of 5.5. Table 6
Insulation dielectric strength test voltage
≤1000
6.5 Rotation direction
The motor is energized and operated according to the markings in 5.2. Its rotation direction should meet the requirements of 5.6. 6 Forward and reverse speed difference
Insulation resistance meter voltage
Apply the highest voltage to the terminal of the motor according to the markings in 5.2, and measure the forward and reverse speeds n1 and n2 of the motor when it is no-load: The forward and reverse speed difference is determined by formula (1):
The result should meet the requirements of 5.7.
6.7 No-load starting voltage
n2-n,]
n2 +n,
Before the test, the motor runs for 5 minutes without load, and then restarts the motor. The rotor is in any position, and the voltage is applied to the terminal to gradually increase from zero until the shaft starts to rotate continuously. Perform three times in each direction, and record the voltage when the shaft starts to rotate continuously each time. The maximum value is the no-load starting voltage, which should meet the requirements of 5.8. 6.8 Overspeed
Adjust the voltage at the motor terminal to increase the motor speed to 1.2 times the maximum working speed, and run it at no load for 2 minutes. The result should meet the requirements of 5.9.
6.9 Back electromotive force coefficient
JB/T5866—2004
Drag the motor to be tested to the maximum working speed, measure the back electromotive force E of the motor, and calculate the back electromotive force coefficient according to formula (2): KE=E
Where:
Ke—back electromotive force coefficient, unit is V/(r·min\):n—maximum working speed, unit is r/minE—back electromotive force at n speed, unit is V. The result should meet the requirements of 5.10.
6.10 DC resistance
The motor under test reaches a stable non-operating temperature indoors. (2)
For the DC resistance with brushes, the following method is recommended: block the motor, apply a DC voltage so that the armature current reaches a certain current not greater than 15% of the rated current, and measure the armature terminal voltage between the motor terminals at the same time. Measure three times at different rotor positions. The test time should be shortened as much as possible. Calculate the DC resistance of the motor with brushes, take the average value of the three points, and convert it into the resistance value at 20℃ as the DC resistance of the motor with brushes R(20*c).
The measurement of DC resistance without brushes is carried out according to special technical conditions. The result should meet the requirements of 5.11.
6.11 Static friction torque
The motor is not energized, and torque is applied to the shaft by pulling or other methods. The torque value at which the motor shaft starts to rotate but does not rotate continuously is measured, which is the static friction torque of the motor. Measure three times in each direction and take the maximum value. The results shall meet the requirements of 5.12. 6.12 Rated current
The motor is operated with rated torque in the range of 0r/min to 40r/min, and the armature current is measured. The results shall meet the requirements of 5.13. 6.13 Temperature rise
The motor is installed on the standard test bracket specified in Appendix A, and then placed at room temperature, and the motor is allowed to reach a stable non-operating temperature. The cold armature DC resistance Ral and room temperature ti are measured, and then the motor is operated at Or/min to 40r/min and rated current. When the motor runs to a stable operating temperature, the armature DC resistance Ra2 and room temperature 12 are measured. The method for measuring the armature DC resistance is carried out in accordance with the method specified in 5.19 of GB/T7345-1994, and the armature terminal voltage U of the motor from the cold state to the thermal stable state is measured at not less than 7 points. The temperature rise of the armature winding is calculated according to formula (3):
R2-R(235+)+(1-12)
Where:
9-winding temperature rise, unit is K;
Ra1-armature winding resistance at stable non-operating temperature t;, unit is QR2-armature winding resistance at stable operating temperature t2, unit is S2: ti-temperature when measuring armature winding resistance Rai, unit is ℃; t2--temperature when measuring armature winding resistance Ra2, unit is ℃. The result shall meet the requirements of 5.14
6.14 Commutation spark
This test shall be carried out when the motor reaches the stable operating temperature after the temperature rise test. (3)
When the motor is running at rated power, observe the commutation spark under the brush, which should meet the requirements of 5.15 for commutation spark in the continuous working area. 6.15 Thermal time constant
Based on the armature terminal voltage U measured by the temperature rise test, take the time at the beginning of the test as the time zero, the test time as the horizontal axis, and the voltage at each point minus the armature terminal voltage in the cold state as the vertical axis, draw a curve of the armature terminal voltage changing with time (U=t). From this curve, find the time required for the voltage to rise to 63.2% of the stable value. This time is the thermal time constant of the motor. The result should meet the requirements of 5.16. 71 Normal test atmospheric conditions
According to the provisions of 5.1.1 of GB/T7345-1994. 6.1.2 Standard atmospheric conditions for arbitration test
According to the provisions of 5.1.2 of GB/T7345-1994 6.1.3 Standard atmospheric conditions for reference
According to the provisions of 5.1.3 of GB/T7345-1994 6.1.4 Test power supply
6.1.4.1 The ripple factor of the DC power supply shall not exceed 5%. 6.1.4.2 The voltage instability shall not exceed 2%
6.1.5 Test instrument accuracy
6.1.5.1 The accuracy level of the ammeter and voltmeter is 0.5. 6.1.5.2 The accuracy of the tachometer is 1.
6.1.5.3 The accuracy of the torque test device is 1%. 6.2 Appearance and assembly quality
6.2.1 Appearance
JB/T5866—2004
Visually inspect the appearance of the motor, which shall meet the requirements of 5.3.1. 6.2.2 Brush running-in quality
Inspect the brush running-in quality, which shall meet the requirements of 5.3.2. 6.2.3 Appearance and installation dimensions
Use a measuring tool that can ensure the accuracy requirements to inspect the appearance and installation dimensions of the motor, which shall meet the requirements of 5.3.3. 6.2.4 Axial clearance
Inspect according to the method specified in 5.5 of GB/7345-1994. The thrust applied to the shaft shall be in accordance with the provisions of Table 5. The axial clearance value shall meet the requirements of 5.3.4.
Frame size
Axial thrust
Radial runout of shaft extension
According to the method specified in 5.6 of GB/T7345-1994, its value shall meet the requirements of 5.3.5. 6.2.6 The coaxiality of the installation matching surface to the axis and the verticality of the installation matching end surface to the axis shall be carried out according to the methods specified in 5.7 and 5.8 of GB/T7345-1994, and its value shall meet the requirements of 5.3.6. Insulation dielectric strength
According to the method specified in 5.17 of GB/T7345-1994, it shall meet the requirements of 5.4. 6.4 Insulation resistance
Use the insulation resistance meter specified in Table 6 to check the insulation resistance between the conductive part of the motor and the housing. The result should meet the requirements of 5.5. Table 6
Insulation dielectric strength test voltage
≤1000
6.5 Rotation direction
The motor is energized and operated according to the markings in 5.2. Its rotation direction should meet the requirements of 5.6. 6 Forward and reverse speed difference
Insulation resistance meter voltage
Apply the highest voltage to the terminal of the motor according to the markings in 5.2, and measure the forward and reverse speeds n1 and n2 of the motor when it is no-load: The forward and reverse speed difference is determined by formula (1):
The result should meet the requirements of 5.7.
6.7 No-load starting voltage
n2-n,]
n2 +n,
Before the test, the motor runs for 5 minutes without load, and then restarts the motor. The rotor is in any position, and the voltage is applied to the terminal to gradually increase from zero until the shaft starts to rotate continuously. Perform three times in each direction, and record the voltage when the shaft starts to rotate continuously each time. The maximum value is the no-load starting voltage, which should meet the requirements of 5.8. 6.8 Overspeed
Adjust the voltage at the motor terminal to increase the motor speed to 1.2 times the maximum working speed, and run it at no load for 2 minutes. The result should meet the requirements of 5.9.
6.9 Back electromotive force coefficient
JB/T5866—2004
Drag the motor to be tested to the maximum working speed, measure the back electromotive force E of the motor, and calculate the back electromotive force coefficient according to formula (2): KE=E
Where:
Ke—back electromotive force coefficient, unit is V/(r·min\):n—maximum working speed, unit is r/minE—back electromotive force at n speed, unit is V. The result should meet the requirements of 5.10.
6.10 DC resistance
The motor under test reaches a stable non-operating temperature indoors. (2)
For the DC resistance with brushes, the following method is recommended: block the motor, apply a DC voltage so that the armature current reaches a certain current not greater than 15% of the rated current, and measure the armature terminal voltage between the motor terminals at the same time. Measure three times at different rotor positions. The test time should be shortened as much as possible. Calculate the DC resistance of the motor with brushes, take the average value of the three points, and convert it into the resistance value at 20℃ as the DC resistance of the motor with brushes R(20*c).
The measurement of DC resistance without brushes is carried out according to special technical conditions. The result should meet the requirements of 5.11.
6.11 Static friction torque
The motor is not energized, and torque is applied to the shaft by pulling or other methods. The torque value at which the motor shaft starts to rotate but does not rotate continuously is measured, which is the static friction torque of the motor. Measure three times in each direction and take the maximum value. The results shall meet the requirements of 5.12. 6.12 Rated current
The motor is operated with rated torque in the range of 0r/min to 40r/min, and the armature current is measured. The results shall meet the requirements of 5.13. 6.13 Temperature rise
The motor is installed on the standard test bracket specified in Appendix A, and then placed at room temperature, and the motor is allowed to reach a stable non-operating temperature. The cold armature DC resistance Ral and room temperature ti are measured, and then the motor is operated at Or/min to 40r/min and rated current. When the motor runs to a stable operating temperature, the armature DC resistance Ra2 and room temperature 12 are measured. The method for measuring the armature DC resistance is carried out in accordance with the method specified in 5.19 of GB/T7345-1994, and the armature terminal voltage U of the motor is measured from the cold state to the thermal stable state for not less than 7 points. The temperature rise of the armature winding is calculated according to formula (3):
R2-R(235+)+(1-12)
Where:
9-winding temperature rise, unit is K;
Ra1-armature winding resistance at stable non-operating temperature t;, unit is QR2-armature winding resistance at stable operating temperature t2, unit is S2: ti-temperature when measuring armature winding resistance Rai, unit is ℃; t2--temperature when measuring armature winding resistance Ra2, unit is ℃. The result shall meet the requirements of 5.14
6.14 Commutation spark
This test shall be carried out when the motor reaches the stable operating temperature after the temperature rise test. (3)
When the motor is running at rated power, observe the commutation spark under the brush, which should meet the requirements of 5.15 for commutation spark in the continuous working area. 6.15 Thermal time constant
Based on the armature terminal voltage U measured by the temperature rise test, take the time at the beginning of the test as the time zero, the test time as the horizontal axis, and the voltage at each point minus the armature terminal voltage in the cold state as the vertical axis, draw a curve of the armature terminal voltage changing with time (U=t). From this curve, find the time required for the voltage to rise to 63.2% of the stable value. This time is the thermal time constant of the motor. The result should meet the requirements of 5.16. 71 Normal test atmospheric conditions
According to the provisions of 5.1.1 of GB/T7345-1994. 6.1.2 Standard atmospheric conditions for arbitration test
According to the provisions of 5.1.2 of GB/T7345-1994 6.1.3 Standard atmospheric conditions for reference
According to the provisions of 5.1.3 of GB/T7345-1994 6.1.4 Test power supply
6.1.4.1 The ripple factor of the DC power supply shall not exceed 5%. 6.1.4.2 The voltage instability shall not exceed 2%
6.1.5 Test instrument accuracy
6.1.5.1 The accuracy level of the ammeter and voltmeter is 0.5. 6.1.5.2 The accuracy of the tachometer is 1.
6.1.5.3 The accuracy of the torque test device is 1%. 6.2 Appearance and assembly quality
6.2.1 Appearance
JB/T5866—2004
Visually inspect the appearance of the motor, which shall meet the requirements of 5.3.1. 6.2.2 Brush running-in quality
Inspect the brush running-in quality, which shall meet the requirements of 5.3.2. 6.2.3 Appearance and installation dimensions
Use a measuring tool that can ensure the accuracy requirements to inspect the appearance and installation dimensions of the motor, which shall meet the requirements of 5.3.3. 6.2.4 Axial clearance
Inspect according to the method specified in 5.5 of GB/7345-1994. The thrust applied to the shaft shall be in accordance with the provisions of Table 5. The axial clearance value shall meet the requirements of 5.3.4.
Frame size
Axial thrust
Radial runout of shaft extension
According to the method specified in 5.6 of GB/T7345-1994, its value shall meet the requirements of 5.3.5. 6.2.6 The coaxiality of the installation matching surface to the axis and the verticality of the installation matching end surface to the axis shall be carried out according to the methods specified in 5.7 and 5.8 of GB/T7345-1994, and its value shall meet the requirements of 5.3.6. Insulation dielectric strength
According to the method specified in 5.17 of GB/T7345-1994, it shall meet the requirements of 5.4. 6.4 Insulation resistance
Use the insulation resistance meter specified in Table 6 to check the insulation resistance between the conductive part of the motor and the housing. The result should meet the requirements of 5.5. Table 6
Insulation dielectric strength test voltage
≤1000
6.5 Rotation direction
The motor is energized and operated according to the markings in 5.2. Its rotation direction should meet the requirements of 5.6. 6 Forward and reverse speed difference
Insulation resistance meter voltage
Apply the highest voltage to the terminal of the motor according to the markings in 5.2, and measure the forward and reverse speeds n1 and n2 of the motor when it is no-load: The forward and reverse speed difference is determined by formula (1):
The result should meet the requirements of 5.7.
6.7 No-load starting voltage
n2-n,]
n2 +n,
Before the test, the motor runs for 5 minutes without load, and then restarts the motor. The rotor is in any position, and the voltage is applied to the terminal to gradually increase from zero until the shaft starts to rotate continuously. Perform three times in each direction, and record the voltage when the shaft starts to rotate continuously each time. The maximum value is the no-load starting voltage, which should meet the requirements of 5.8. 6.8 Overspeed
Adjust the voltage at the motor terminal to increase the motor speed to 1.2 times the maximum working speed, and run it at no load for 2 minutes. The result should meet the requirements of 5.9.
6.9 Back electromotive force coefficient
JB/T5866—2004
Drag the motor to be tested to the maximum working speed, measure the back electromotive force E of the motor, and calculate the back electromotive force coefficient according to formula (2): KE=E
Where:
Ke—back electromotive force coefficient, unit is V/(r·min\):n—maximum working speed, unit is r/minE—back electromotive force at n speed, unit is V. The result should meet the requirements of 5.10.
6.10 DC resistance
The motor under test reaches a stable non-operating temperature indoors. (2)
For the DC resistance with brushes, the following method is recommended: block the motor, apply a DC voltage so that the armature current reaches a certain current not greater than 15% of the rated current, and measure the armature terminal voltage between the motor terminals at the same time. Measure three times at different rotor positions. The test time should be shortened as much as possible. Calculate the DC resistance of the motor with brushes, take the average value of the three points, and convert it into the resistance value at 20℃ as the DC resistance of the motor with brushes R(20*c).
The measurement of DC resistance without brushes is carried out according to special technical conditions. The result should meet the requirements of 5.11.
6.11 Static friction torque
The motor is not energized, and torque is applied to the shaft by pulling or other methods. The torque value at which the motor shaft starts to rotate but does not rotate continuously is measured, which is the static friction torque of the motor. Measure three times in each direction and take the maximum value. The results shall meet the requirements of 5.12. 6.12 Rated current
The motor is operated with rated torque in the range of 0r/min to 40r/min, and the armature current is measured. The results shall meet the requirements of 5.13. 6.13 Temperature rise
The motor is installed on the standard test bracket specified in Appendix A, and then placed at room temperature, and the motor is allowed to reach a stable non-operating temperature. The cold armature DC resistance Ral and room temperature ti are measured, and then the motor is operated at Or/min to 40r/min and rated current. When the motor runs to a stable operating temperature, the armature DC resistance Ra2 and room temperature 12 are measured. The method for measuring the armature DC resistance is carried out in accordance with the method specified in 5.19 of GB/T7345-1994, and the armature terminal voltage U of the motor is measured from the cold state to the thermal stable state for not less than 7 points. The temperature rise of the armature winding is calculated according to formula (3):
R2-R(235+)+(1-12)
Where:
9-winding temperature rise, unit is K;
Ra1-armature winding resistance at stable non-operating temperature t;, unit is QR2-armature winding resistance at stable operating temperature t2, unit is S2: ti-temperature when measuring armature winding resistance Rai, unit is ℃; t2--temperature when measuring armature winding resistance Ra2, unit is ℃. The result shall meet the requirements of 5.14
6.14 Commutation spark
This test shall be carried out when the motor reaches the stable operating temperature after the temperature rise test. (3)
When the motor is running at rated power, observe the commutation spark under the brush, which should meet the requirements of 5.15 for commutation spark in the continuous working area. 6.15 Thermal time constant
Based on the armature terminal voltage U measured by the temperature rise test, take the time at the beginning of the test as the time zero, the test time as the horizontal axis, and the voltage at each point minus the armature terminal voltage in the cold state as the vertical axis, draw a curve of the armature terminal voltage changing with time (U=t). From this curve, find the time required for the voltage to rise to 63.2% of the stable value. This time is the thermal time constant of the motor. The result should meet the requirements of 5.16. 78, the value shall meet the requirements of 5.3.6. Insulation dielectric strength
The insulation resistance between the conductive part of the motor and the housing shall be checked using the insulation resistance meter specified in Table 6, and the result shall meet the requirements of 5.5. Table 6
Insulation dielectric strength test voltage
≤1000
6.5 Rotation direction
The motor is energized and operated according to the markings in 5.2, and its rotation direction shall meet the requirements of 5.6. 6 Forward and reverse speed difference
Insulation resistance meter voltage
Apply the highest voltage to the motor terminals according to the markings in 5.2, and measure the forward and reverse speeds n1 and n2 of the motor when it is unloaded: The forward and reverse speed difference is determined by formula (1):
The result shall meet the requirements of 5.7.
6.7 No-load starting voltage
n2-n,]
n2 +n,
Before the test, the motor runs at no load for 5 minutes, and then restarts the motor. With the rotor in any position, apply voltage to the terminal and gradually increase it from zero until the shaft starts to rotate continuously. Perform three times in each direction, and record the voltage when the shaft starts to rotate continuously each time. The maximum value is the no-load starting voltage, which should meet the requirements of 5.8. 6.8 Overspeed
Adjust the voltage at the motor terminal to increase the motor speed to 1.2 times the maximum operating speed, and run it at no load for 2 minutes. The result should meet the requirements of 5.9.
6.9 Back EMF coefficient
JB/T5866—2004
Drag the motor to be tested to the highest operating speed, measure the back EMF E of the motor, and calculate the back EMF coefficient according to formula (2): KE=E
Where:
Ke—back EMF coefficient, unit is V/(r·min\): n—maximum operating speed, unit is r/minE—back EMF at speed n, unit is V. The result should meet the requirements of 5.10.
6.10 DC resistance
The motor to be tested reaches a stable non-operating temperature indoors. (2)
For the DC resistance with brushes, it is recommended to measure it by the following method: block the motor, apply a DC voltage so that the armature current reaches a certain current not greater than 15% of the rated current, and measure the armature terminal voltage between the motor terminals at the same time. Measure three times at different rotor positions. The test time should be shortened as much as possible. Calculate the DC resistance of the motor with brushes, take the average of three points, and convert it into the resistance value at 20℃ as the DC resistance R(20*c) of the motor with brushes.
The measurement of DC resistance without brushes is carried out according to special technical conditions. The result should meet the requirements of 5.11.
6.11 Static friction torque
The motor is not energized, and torque is applied to the shaft by pulling or other methods. The torque value at which the motor shaft starts to rotate but does not rotate continuously is measured, which is the static friction torque of the motor. Measure three times in each direction and take the maximum value. The result should meet the requirements of 5.12. 6.12 Rated current
The motor runs with rated torque in the range of 0r/min~40r/min, and measures the armature current. The result should meet the requirements of 5.13. 6.13 Temperature rise
Mount the motor on the standard test stand specified in Appendix A, then place it at room temperature and allow the motor to reach a stable non-operating temperature. Measure the cold armature DC resistance Ral and room temperature ti, and then operate the motor at Or/min~40r/min and rated current. When the motor runs to a stable operating temperature, measure the armature DC resistance Ra2 and room temperature 12. The method for measuring the armature DC resistance is in accordance with the method specified in 5.19 of GB/T7345-1994, and measure the armature terminal voltage U of the motor from the cold state to the thermal stable state for not less than 7 points. The temperature rise of the armature winding is calculated according to formula (3):
R2-R(235+)+(1-12)
Where:
9-winding temperature rise, unit is K;
Ra1-armature winding resistance at stable non-operating temperature t;, unit is QR2-armature winding resistance at stable operating temperature t2, unit is S2: ti-temperature when measuring armature winding resistance Rai, unit is ℃; t2--temperature when measuring armature winding resistance Ra2, unit is ℃. The result shall meet the requirements of 5.14
6.14 Commutation spark
This test shall be carried out when the motor reaches the stable operating temperature after the temperature rise test. (3)
When the motor is running at rated power, observe the commutation spark under the brush, which should meet the requirements of 5.15 for commutation spark in the continuous working area. 6.15 Thermal time constant
Based on the armature terminal voltage U measured by the temperature rise test, take the time at the beginning of the test as the time zero, the test time as the horizontal axis, and the voltage at each point minus the armature terminal voltage in the cold state as the vertical axis, draw a curve of the armature terminal voltage changing with time (U=t). From this curve, find the time required for the voltage to rise to 63.2% of the stable value. This time is the thermal time constant of the motor. The result should meet the requirements of 5.16. 78, the value shall meet the requirements of 5.3.6. Insulation dielectric strength
The insulation resistance between the conductive part of the motor and the housing shall be checked using the insulation resistance meter specified in Table 6, and the result shall meet the requirements of 5.5. Table 6
Insulation dielectric strength test voltage
≤1000
6.5 Rotation direction
The motor is energized and operated according to the markings in 5.2, and its rotation direction shall meet the requirements of 5.6. 6 Forward and reverse speed difference
Insulation resistance meter voltage
Apply the highest voltage to the motor terminals according to the markings in 5.2, and measure the forward and reverse speeds n1 and n2 of the motor when it is unloaded: The forward and reverse speed difference is determined by formula (1):
The result shall meet the requirements of 5.7.
6.7 No-load starting voltage
n2-n,]
n2 +n,
Before the test, the motor runs at no load for 5 minutes, and then restarts the motor. With the rotor in any position, apply voltage to the terminal and gradually increase it from zero until the shaft starts to rotate continuously. Perform three times in each direction, and record the voltage when the shaft starts to rotate continuously each time. The maximum value is the no-load starting voltage, which should meet the requirements of 5.8. 6.8 Overspeed
Adjust the voltage at the motor terminal to increase the motor speed to 1.2 times the maximum operating speed, and run it at no load for 2 minutes. The result should meet the requirements of 5.9.
6.9 Back EMF coefficient
JB/T5866—2004
Drag the motor to be tested to the highest operating speed, measure the back EMF E of the motor, and calculate the back EMF coefficient according to formula (2): KE=E
Where:
Ke—back EMF coefficient, unit is V/(r·min\): n—maximum operating speed, unit is r/minE—back EMF at speed n, unit is V. The result should meet the requirements of 5.10.
6.10 DC resistance
The motor to be tested reaches a stable non-operating temperature indoors. (2)
For the DC resistance with brushes, it is recommended to measure it by the following method: block the motor, apply a DC voltage so that the armature current reaches a certain current not greater than 15% of the rated current, and measure the armature terminal voltage between the motor terminals at the same time. Measure three times at different rotor positions. The test time should be shortened as much as possible. Calculate the DC resistance of the motor with brushes, take the average of three points, and convert it into the resistance value at 20℃ as the DC resistance R(20*c) of the motor with brushes.
The measurement of DC resistance without brushes is carried out according to special technical conditions. The result should meet the requirements of 5.11.
6.11 Static friction torque
The motor is not powered, and torque is applied to the shaft by pulling or other methods. The torque value at which the motor shaft starts to rotate but does not rotate continuously is measured, which is the static friction torque of the motor. Measure three times in each direction and take the maximum value. The result should meet the requirements of 5.12. 6.12 Rated current
The motor runs with rated torque in the range of 0r/min~40r/min, and measures the armature current. The result should meet the requirements of 5.13. 6.13 Temperature rise
Mount the motor on the standard test stand specified in Appendix A, then place it at room temperature and allow the motor to reach a stable non-operating temperature. Measure the cold armature DC resistance Ral and room temperature ti, and then operate the motor at Or/min~40r/min and rated current. When the motor runs to a stable operating temperature, measure the armature DC resistance Ra2 and room temperature 12. The method for measuring the armature DC resistance is in accordance with the method specified in 5.19 of GB/T7345-1994, and measure the armature terminal voltage U of the motor from the cold state to the thermal stable state for not less than 7 points. The temperature rise of the armature winding is calculated according to formula (3):
R2-R(235+)+(1-12)
Where:
9-winding temperature rise, unit is K;
Ra1-armature winding resistance at stable non-operating temperature t;, unit is QR2-armature winding resistance at stable operating temperature t2, unit is S2: ti-temperature when measuring armature winding resistance Rai, unit is ℃; t2--temperature when measuring armature winding resistance Ra2, unit is ℃. The result shall meet the requirements of 5.14
6.14 Commutation spark
This test shall be carried out when the motor reaches the stable operating temperature after the temperature rise test. (3)
When the motor is running at rated power, observe the commutation spark under the brush, which should meet the requirements of 5.15 for commutation spark in the continuous working area. 6.15 Thermal time constant
Based on the armature terminal voltage U measured by the temperature rise test, take the time at the beginning of the test as the time zero, the test time as the horizontal axis, and the voltage at each point minus the armature terminal voltage in the cold state as the vertical axis, draw a curve of the armature terminal voltage changing with time (U=t). From this curve, find the time required for the voltage to rise to 63.2% of the stable value. This time is the thermal time constant of the motor. The result should meet the requirements of 5.16. 713 Temperature rise
Install the motor on the standard test stand specified in Appendix A, then place it at room temperature and allow the motor to reach a stable non-operating temperature. Measure the cold armature DC resistance Ral and room temperature ti, and then operate the motor at Or/min~40r/min and rated current. When the motor runs to a stable operating temperature, measure the armature DC resistance Ra2 and room temperature 12. The method for measuring the armature DC resistance is in accordance with the method specified in 5.19 of GB/T7345-1994, and measure the armature terminal voltage U of the motor from the cold state to the thermal stable state for not less than 7 points. The temperature rise of the armature winding is calculated according to formula (3):
R2-R(235+)+(1-12)
Where:
9-winding temperature rise, unit is K;
Ra1-armature winding resistance at stable non-operating temperature t;, unit is QR2-armature winding resistance at stable operating temperature t2, unit is S2: ti-temperature when measuring armature winding resistance Rai, unit is ℃; t2--temperature when measuring armature winding resistance Ra2, unit is ℃. The result shall meet the requirements of 5.14
6.14 Commutation spark
This test shall be carried out when the motor reaches the stable operating temperature after the temperature rise test. (3)
When the motor is running at rated power, observe the commutation spark under the brush, which should meet the requirements of 5.15 for commutation spark in the continuous working area. 6.15 Thermal time constant
Based on the armature terminal voltage U measured by the temperature rise test, take the time at the beginning of the test as the time zero, the test time as the horizontal axis, and the voltage at each point minus the armature terminal voltage in the cold state as the vertical axis, draw a curve of the armature terminal voltage changing with time (U=t). From this curve, find the time required for the voltage to rise to 63.2% of the stable value. This time is the thermal time constant of the motor. The result should meet the requirements of 5.16. 713 Temperature rise
Install the motor on the standard test stand specified in Appendix A, then place it at room temperature and allow the motor to reach a stable non-operating temperature. Measure the cold armature DC resistance Ral and room temperature ti, and then operate the motor at Or/min~40r/min and rated current. When the motor runs to a stable operating temperature, measure the armature DC resistance Ra2 and room temperature 12. The method for measuring the armature DC resistance is in accordance with the method specified in 5.19 of GB/T7345-1994, and measure the armature terminal voltage U of the motor from the cold state to the thermal stable state for not less than 7 points. The temperature rise of the armature winding is calculated according to formula (3):
R2-R(235+)+(1-12)
Where:
9-winding temperature rise, unit is K;
Ra1-armature winding resistance at stable non-operating temperature t;, unit is QR2-armature winding resistance at stable operating temperature t2, unit is S2: ti-temperature when measuring armature winding resistance Rai, unit is ℃; t2--temperature when measuring armature winding resistance Ra2, unit is ℃. The result shall meet the requirements of 5.14
6.14 Commutation spark
This test shall be carried out when the motor reaches the stable operating temperature after the temperature rise test. (3)
When the motor is running at rated power, observe the commutation spark under the brush, which should meet the requirements of 5.15 for commutation spark in the continuous working area. 6.15 Thermal time constant
Based on the armature terminal voltage U measured by the temperature rise test, take the time at the beginning of the test as the time zero, the test time as the horizontal axis, and the voltage at each point minus the armature terminal voltage in the cold state as the vertical axis, draw a curve of the armature terminal voltage changing with time (U=t). From this curve, find the time required for the voltage to rise to 63.2% of the stable value. This time is the thermal time constant of the motor. The result should meet the requirements of 5.16. 7
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.