Some standard content:
1 Subject content and scope of application
Machinery Industry Standard of the People's Republic of China
Disc brake asynchronous motor
JB/T622292
This standard specifies the type, basic parameters and dimensions, technical requirements, test methods, inspection rules, and marking, packaging, transportation and storage requirements of disc brake asynchronous motors. This standard applies to disc brake asynchronous motors (hereinafter referred to as motors). All motors derived from this series of motors can also be implemented as a reference.
2 Reference standards
GB5171
GB12350
GB1993
GB12665
GB4826
GB1032
GB10069
GB1971
GB4831
GB2900.25
GB2900.27
GB2828
JB/Z294
Basic technical requirements for rotating electrical machines
General technical requirements for small power motors
Safety requirements for small power motors
Motor housing protection classification
Motor cooling method
Motor dimensions and tolerances Frame size 36~400: Motors with flange number FF55~1080 or FT55~FT1080 Damp heat test requirements for motors used under normal environmental conditions Motor power level
Cylindrical shaft extension of motor
Test method for three-phase asynchronous motor
Determination method and limit of noise of rotating motor
Motor terminal marking and rotation direction
Pictorial marking for packaging, storage and transportation
Motor structure and installation type code
Compilation method of motor product model
Electrical terminology Motor
Electrical terminology Low-power motor
Batch inspection counting sampling procedure and sampling table AC low-voltage motor scattered winding spacing insulation test method Method for determination of rotor moment of inertia of small motor JB/DQ3619 General rules for quality classification of small-power motor products 3 Types, basic parameters and dimensions
3.1 The armature and rotor of the motor are disc-shaped, the air gap magnetic field is an axial structure, and the rotor and brake form an integrated motor. 3.2 The power (W) level of the motor is specified as follows according to the first number system in GB4826 standard: 90, 120, 180, 250, 370, 550, 750, 1100, 1500, 2200W.
3.3 The cooling method of the motor is specified as IC0041 according to GB1993 standard. Approved by the Ministry of Machinery and Electronics Industry on June 16, 1992, 22
Implementation on January 1, 1993
JB/T6222-92
The enclosure protection of the motor is specified as IP44 according to GB4942.1 standard. The corresponding relationship between the flange number of the motor and the power and speed should be in accordance with the provisions of Table 1. Table 1
Motor power
FF265·
90(100)
180(200)
370(400)
550(500)
The motor rating is divided into two types: continuous duty (S1) and short-time duty (S2-30min time limit). 3.6
The rated frequency of the motor is 50Hz, and the rated voltage is 380V. The structure and installation form of the motor are in accordance with the provisions of GB997 standard, and the code is IMB5 (as shown in Figure 1). 3.8
3.9 Dimensions and tolerances of the motor
3.9.1 The installation dimensions and tolerances of the motor and the external dimensions shall comply with the provisions of Table 2. Synchronous speed
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3.9.2. The radial runout tolerance at half the shaft extension length shall comply with the provisions of Table 3. Table 3
Shaft extension diameter
>10~18
>18~30
Radial runout tolerance
3.9.3 The radial runout tolerance of the flange stop to the motor axis and the end face runout tolerance of the flange mating surface to the motor axis shall comply with the provisions of Table 4.
Diameter of flange stop
120~180
>180~250
4 Technical requirements
Runout tolerance
4.1 The motor shall comply with the requirements of this standard and be manufactured in accordance with the drawings and technical documents approved by the prescribed procedures. mm
4.2 Unless otherwise required by the user, the motor shall be able to operate at rated altitude, ambient air temperature and ambient air relative humidity under the following conditions.
4.2.1 Altitude
The altitude shall not exceed 1000m.
When the altitude of the operating location is specified to be more than 1000m or the ambient air temperature of the operating location decreases with the increase of altitude, it shall be corrected according to the provisions of Article 5.3.4 of GB755 standard. 4.2.2 Maximum ambient air temperature
The ambient air temperature of the operating location varies with the seasons, but shall not exceed 40℃. When the maximum ambient air temperature of the operating location is higher or lower than 40C, it shall be corrected according to the provisions of Article 5.3.4 of GB755. 4.2.3 Maximum ambient air humidity
The average maximum relative humidity of the wettest month of the operating location is 90%, and the average minimum temperature of the month is not higher than 25℃. Under this relative humidity of ambient air, the motor shall be able to be safely put into operation after a long period of shutdown. 4.3 During the operation of the motor, the deviation of the power supply voltage and rated power from the rated value shall comply with the provisions of Article 4.3 of GB755. 4.4 When the power supply voltage of the motor is not less than 90% of the rated voltage (at this time, the rated power is rated), the motor shall be able to drive the rated load. 4.5 At the rated voltage, the motor's locked-rotor torque, the guaranteed value of the ratio of the maximum torque to the rated torque, and the guaranteed value of the ratio of the locked-rotor current to the rated current shall comply with the provisions of Table 5.
4.6 At the rated voltage, the minimum torque during the motor starting process shall not be less than 1.3 times the rated torque. 4.7. When the power, voltage and frequency of the motor are rated, the guaranteed values of its efficiency and power factor shall comply with the provisions of Table 6. 4.8 The tolerance of the guaranteed value of the motor's electrical performance shall comply with the provisions of Table 7. When the tolerance in the table has only one symbol (such as only "ten" or only "two"), the tolerance in the opposite direction is not restricted. 4.9 When the motor is running at rated speed under the environmental conditions specified in Article 4.2 of this standard, the temperature rise value (resistance method) of the motor stator winding using Class B insulation and the temperature limit of the rolling bearing are as follows: a. The temperature rise limit of the motor with power greater than 600W is 80K; b.:
The temperature rise limit of the motor with power less than 600W is 85K; Motor power
Motor power
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Locked-rotor torque/rated torque
Maximum torque/rated torque
Efficiency #
Power factor cos
Locked-rotor current
Locked-rotor torque
Maximum torque
Minimum torque
The temperature rise limit of short-time working (S2) motors can be increased by 10K compared with item a or item b; the allowable temperature of rolling bearings is 95℃,
locked rotor current/rated current
power factor
0.15(1), at most -0.07
-(1-co5)/6, at most -0.07
+20% of guaranteed value
-15% of guaranteed value
-10% of guaranteed value
-15% of guaranteed value
If the altitude and ambient air temperature of the test site are different from those specified in Article 4.2, the temperature rise limit should be revised according to the provisions of Article 5.3.5 of GB755 standard.
When the three-phase power supply is balanced, the deviation of any phase of the three-phase no-load current of the motor from the three-phase average value should not be greater than 4.10
The insulation resistance of the motor stator winding to the housing and the windings should not be less than 1M in the hot state or after the temperature rise test, or should not be less than 20Mn in the normal state.
JB/T6222-92
4.12 The stator winding of the motor should be able to withstand the withstand voltage test for 1min without breakdown. The frequency of the test voltage is 50Hz, and it should be a sine wave as much as possible, and the effective value of the voltage is 1760V. When the motor is accepted, this test should not be repeated. If the user requests, it is allowed to be carried out according to the provisions of GBS171 standard. When a large number of continuously produced motors are inspected before leaving the factory, the test time is allowed to be shortened to 1s, and the effective value of the test voltage is 2110V, and the test voltage is applied with a test rod.
4.13 The stator winding of the motor should be able to withstand the inter-turn insulation impulse withstand voltage test without breakdown. The impulse test voltage (bee value) is 2200V. It is also allowed to be replaced by an increased voltage test. The test is carried out when the motor is unloaded, and the external voltage is 130% of the rated voltage for 3 minutes. When the voltage value is increased to 130% of the rated voltage, the frequency is allowed to be increased at the same time, but it should not exceed 115% of its rated value. 4.14 The motor should be able to withstand an over-torque test of 1.6 times the rated torque in a hot state and with gradually increasing torque for 15 minutes without sudden speed changes, stalling or harmful deformation. At this time, the voltage and frequency should be maintained at the rated value. The motor should be able to withstand an increase in speed to 120% of its rated value for 2 minutes without harmful deformation when it is unloaded. 4.15
After the damp heat test of the motor, the insulation performance shall meet the following requirements: the insulation resistance of the motor winding to the housing and between the windings shall not be less than 0.38Mn after 6 cycles of alternating damp heat test; or shall not be less than 1.0MM after 2 cycles of constant damp heat test. b. The insulation withstand voltage test of the motor winding to the housing and between the windings shall be able to withstand 85% of the test voltage specified in Article 4.12 of this standard for 1 minute without breakdown. 4.17
The braking torque of the motor shall be greater than or equal to the provisions of Table 8, and the moment of inertia shall be less than or equal to the provisions of Table 8. Table 8
Motor power
Braking torque
When the motor is at rated voltage and rated frequency, the maximum allowable braking frequency is 6 times/min. The braking time of the motor shall be less than 0.25s. The starting acceleration time of the motor shall be less than 0.30s. The A-weighted sound power level value measured when the motor is no-load shall not exceed the provisions of Table 9. Table 9
Motor power
250~750
1500~2200
Output power level
Moment of inertia
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4.22 During the factory inspection, the no-load and stalled current and loss of the motor should be within a certain numerical range, which should ensure that the motor performance meets the requirements of Articles 4.3 to 4.8 of this standard. 4.23 There should be a grounding screw in the outlet box of the motor, and a grounding mark should be set near the grounding screw. The mark symbol is "". 4.24 The electrical clearance of the motor should not be less than 3mm, and the target distance should not be less than 6.3mm. 4.25 The safety requirements of this standard shall comply with the provisions of Chapters 4, 12, 13, 14, 17, 18, and 20 of GB12350. 4.26 When the phase sequence of the motor connection is the same as the phase sequence of the three-phase power supply, the motor should rotate clockwise when viewed from the shaft extension end. The surface paint of the motor should not have spots, bubbles, bumps, cracks and adhered dirt. 4.27
5 Test method
5.1 The test methods of each test in Article 6.1.2 (except for items e and h) and 6.2.2 (except for items g, h, j and k) of this standard shall be carried out in accordance with GB1032.
The inter-pole impulse withstand voltage test in Article 6.1.2, item e, shall be carried out in accordance with the provisions of JB/Z294, and it is also allowed to be carried out in accordance with the provisions of the short-time voltage increase test in GB1032; the determination of the braking torque in item h shall be carried out in accordance with the provisions of Appendix B (supplement) of this standard. For the determination of noise in Article 6.2.2, item g, the motor shall be placed on the elastic pad in the horizontal direction with the shaft extension as the reference for the test. The test method shall be carried out in accordance with the provisions of GB10069 standard, the determination of the moment of inertia of item h shall be carried out in accordance with the provisions of JB949, and the determination of the braking time of item j and the acceleration time of item k shall be carried out in accordance with the provisions of Appendix A (supplement) of this standard. The inspection of the installation dimensions and tolerances specified in Article 6.3 shall be carried out in accordance with the provisions of GB4772.1 standard. 5.2 During the type inspection, the voltage test of the stator winding to the housing and the windings to each other shall be carried out in accordance with the provisions of 17.1a of GB1032 standard.
5.3 The housing protection inspection of the motor shall be carried out in accordance with the provisions of GB4942.1 standard. 5.4 The damp heat test shall be carried out in accordance with the provisions of GB12665 standard. 6 Inspection rules
Product inspection is divided into factory inspection (or delivery inspection) and type inspection (or routine inspection). 6.1 Factory inspection
Each motor shall pass the factory inspection before it can be shipped, and a product certificate shall be attached. The factory inspection items include:
mechanical inspection (according to the provisions of Articles 6.3 and 6.4 of this standard); measurement of the DC resistance of the stator winding in the actual cold state; measurement of the insulation resistance of the stator winding to the casing and between each other; voltage withstand test of the stator winding to the casing and between each other; stator winding turn-to-turn insulation test:
measurement of no-load current and loss (characteristic curve is drawn for type test); measurement of locked-rotor current, loss and torque (characteristic curve is drawn for type test); measurement of braking torque.
Type inspection
Type inspection must be carried out in any of the following situations: trial production and identification of new products or old products in the transfer factory; after formal production, if there are major changes in structure, materials, and processes, which may affect the shell protection, moisture and heat, and product performance; during normal production, type inspection must be carried out at least once every two years (or after accumulating a certain amount of output); when the product is resumed after a long period of suspension; when there is a significant difference between the factory inspection results and the last type inspection; when the national quality supervision agency proposes a requirement for type inspection. 6.2.2 Type inspection items include:
all items of factory inspection;
temperature rise test;
efficiency and power factor determination;
short-time overtorque test; bZxz.net
maximum torque determination;
overspeed test;
noise determination;
moment of inertia determination;
minimum torque determination during starting;
braking time inspection;
acceleration time inspection;
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stop-rotor torque and stop-rotor current determination (measured in cold state). 6.3 Mechanical inspection items include
and other phenomena;
Appearance inspection: Check whether the motor is assembled completely and correctly, and the surface paint should be dry, complete, uniform, without stains, damage, and cracks b. Rotation inspection: When the motor rotates, it should be stable and light, without stagnation, the sound should be uniform and harmonious without harmful noise, and the brake ring should not rub against the brake surface;
The installation dimensions and external dimensions, the radial runout of the shaft extension, the radial runout of the flange stop and the end face runout should comply with the provisions of Article 3.c
9 of this standard.
6.4 Sampling and batching rules
6.4.1 During the factory inspection, item b of Article 6.1.2 and item c of Article 6.3 can be sampled. The sampling inspection method shall be prepared by the manufacturer in accordance with the provisions of GB2828 and based on the factory's quality level. 6.4.2 During type inspection, product sample extraction, batching and product quality assessment shall be carried out in accordance with the provisions of JB/DQ3619. 7 Marking, packaging, transportation and storage
7.1 Marking
7.1.1 All markings on the motor can be printed, engraved, pressed or other effective marking methods, and must be clear, durable and not easily erased during the entire service life.
The motor nameplate should be fixed in a conspicuous position on the housing. The items that should be marked on the nameplate are as follows: Motor model;
Motor name;
Manufacturer or manufacturer mark;
Manufacturer's factory number or factory year and month;
Wiring mark;
Insulation grade;
Enclosure protection grade;
Duty system;
Rated power;
Rated voltage;
Rated current;
Rated frequency;
Rated speed;
n. Gross weight;
0.Braking torque.
JB/T6222-92
7.1.3 The winding outlet terminal mark shall be engraved on the outlet terminal or marked with a label plate and engraved on the lead-out terminal at the same time in accordance with the provisions of GB1971 standard, but the label plate shall not be hung separately.
Special motors are allowed to use the color of the wires instead of the terminal markings. The color markings are as follows: U1-blue
V1-white
W1-orange
U2-yellow
V2-black
W2-red
The markings on the outer wall of the motor packaging box should be obvious and the handwriting should be clear. 7.1.4
The items that should be marked on the outer wall of the packaging box are as follows: the name of the shipping station and the manufacturer;
the name of the receiving station and the receiving unit;
the model, name and product number of the motor; the net weight of the motor and the gross weight of the transport box; the size of the box:
{., and the words and symbols such as "Handle with Care" are marked at appropriate locations outside the box. Its symbols and graphics should comply with the provisions of GB191 standard. Packaging
The packaging of the motor should be firm and reliable, and have moisture-proof measures to avoid moisture and damage during transportation. The motor shaft extension key must be tied to the shaft extension. 7.2.2
7.2.3 Anti-rust and protective measures should be taken on the surfaces of the shaft extension, flat key and flange stop. 7.2.4
The following documents must be included in the packaging box:
The product certificate should be provided to the user along with each motor; operation and maintenance instructions (at least one copy is provided for a batch of motors of the same type for the same user). b.
The operation and maintenance instructions should specify the correct use method and storage conditions of the motor, etc. 7.3 Transportation
There is no restriction on the means of transportation of the motor, but it must be ensured that the motors cannot collide with each other during transportation, and are not exposed to rain and corrosion by chemicals. 7.4 Storage
7.4.1 The motor should be stored in a dry warehouse filled with harmless gas. It is strictly forbidden to store corrosive chemicals, such as acid and alkali chemicals, in the same warehouse as the motor. 7.4.2 If the product needs to be stored after unpacking and inspection, it must be repackaged in accordance with the provisions of Article 7.2 of this standard. 8 Others
If the user uses and stores the motor correctly in accordance with the provisions of the operating and maintenance instructions, the manufacturer should ensure that the motor can operate well within one year of use, but not more than two years from the date of shipment from the manufacturer. If the motor is damaged or cannot work normally due to poor manufacturing quality within this specified time, the manufacturer should repair or replace parts or motors for the user without hesitation. JB/T6222-92
Appendix A
Test method for starting acceleration time and braking time of electric motor (supplement)
A1 Install the motor to be tested on the flange according to the IMB5 installation type, use a coupling to concentrically connect the shafts of the motor to be tested and the tachometer generator, and connect the output signal of the tachometer generator to an oscilloscope (or recorder). A2 Suddenly connect the motor to be tested to a power supply with rated voltage and rated rate to start the motor. While the power is turned on, use an oscilloscope (or recorder) to record the waveform changes of the output voltage of the tachometer generator. The transition time t from the speed starting from 0 to the speed stabilization is the starting acceleration time.
A3. When the speed reaches stability, cut off the power supply to stop the motor completely, and use an oscilloscope (or recorder) to record the waveform changes of the output voltage of the tachometer generator. The time t2 from the start of the speed stabilization to the complete stop of the speed is the braking time. A4 starts from A2 and ends at A3, which is the first time. This is repeated three times. The average value of the three acceleration times is taken as the starting acceleration time; the average value of the three braking times is taken as the braking time of the actuator. Appendix B
Test method of brake torque of electric motor
(Supplement)
B1 Install the test motor on the flange according to the IMB5 installation type and fix it on the shaft extension of the motor with a lever. When the motor is not powered on, gradually add the weight to one end of the lever. When the lever starts to rotate, the product of the weight before this point and the length of the single arm of the lever is the braking torque (N·m), which is expressed as follows: M=g·R
Where: g—magnetic weight, N;
R-length of the single arm of the lever, m.
B2 Each motor should be measured three times at each relative position of the stator and rotor, with each relative position of the stator and rotor separated by a mechanical angle of 120°. A total of 9 points are measured at the three relative positions, and the minimum value is taken as the braking torque value. Appendix C
Product Model
(Supplement)
C1 The compilation principle of this product model is in accordance with the provisions of GB4831. C2 The components and contents of the product model are as follows: YPE750-4Z
Supplementary code, B represents the braking code.
Specification code, indicating 750W, 4 poles.
Product code, indicating a disc-type three-phase asynchronous motor. Additional notes:
This standard was proposed and managed by the Guangzhou Electric Science Research Institute of the Ministry of Machinery and Electronics Industry. This standard was drafted by the Guangzhou Electric Science Research Institute of the Ministry of Machinery and Electronics Industry and Chaonan Yuejin Machinery Factory. The main drafters of this standard are Hou Tingxiang, Wang Huawei and Zhou Yichu.
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