JB/T 5272-1991 Y series (IP23) three-phase asynchronous motor technical conditions (frame number 315~355)

This standard specifies the type, basic parameters and dimensions, technical requirements, test methods and inspection rules of electric motors, as well as marking and packaging requirements. JB/T 5272-1991 Technical conditions of Y series (IP23) three-phase asynchronous motor (frame number 315~355) JB/T5272-1991 Standard download and decompression password: www.bzxz.net

Machinery Industry Standard of the People's Republic of China
Y series (IP23) three-phase asynchronous motor
Technical conditions
(Frame number 315~355)
1 Theme content and application Scope
JB 5272: 91
This standard specifies the motor type, basic parameters and dimensions, technical requirements, inspection rules, and marking and packaging requirements. This standard applies to Y series (IP23) cage rotor general-purpose three-phase asynchronous motors (hereinafter referred to as motors) with frame numbers 315 to 355. All varieties derived from this series can also be implemented with reference. 2 Reference standards
GB755 Basic technical requirements for rotating motors
Motor shell protection classification
GB 4942.1
GB1993 Motor cooling method
GB 997||tt| |Motor structure and installation type codewwW.bzxz.Net
GB 4772.1
GB12665
GB10069
GB10068
GB1032
Motor Dimensions and Tolerances Humidity test requirements for motors with frame sizes 36~400 and flange numbers FF55-FF1080 or FT55~FT1080 when used under general environmental conditions. Methods and limits for measuring noise of rotating electrical machines
Methods for measuring vibration of rotating electrical machines and limit values
Three-phase asynchronous motor test method
Packaging, storage and transportation pictorial mark
JB/Z 294
AC low-voltage motor scattered winding inter-turn insulation test method JB/Z346 | | tt | 3.2 The cooling method of the motor is IC01 (see GB1993). 3.3 The structure and installation type of the motor is IMB3 (see GB997). 3.4 The rating of the motor is a continuous rating based on the continuous working system (S1). The rated frequency of the 3.5 motor is 50Hz and the rated voltage is 380V. 3.6 The motor should be manufactured according to the following rated power (kW): 55.75, 90, 110, 132, 160, 185200.220.250, 280, 315, 355. 3.7 The corresponding relationship between the motor’s frame number, speed and power should be as specified in Table 1. The Ministry of Mechanical and Electronics Industry of the People's Republic of China approved 198
1992-07-01 implementation on 1991-06-28
315M1
3551.1|| tt||355L2
280||tt| |315
JB5272-9
Table 1
Same as
250| |tt||280
revolution
speed,
600| |tt||55
or||tt ||90
Note: 1) The power design allows for a 355M base. 2) The power arrangement is recommended to be placed on the 355L base. However, it is also allowed to be placed on the 400 base. At this time, the installation size should be determined by the manufacturer and the user after consultation. 3.8 Motor size and tolerance
3.8.1 Motor installation Dimensions and tolerances should comply with the provisions of Table 2, and the overall dimensions should not be greater than the provisions of Table 2199
JB5272
18361989
O|| tt||Wo
s79||tt| |8
extreme
public
and||tt ||Cutting
08||tt| |foot
installation
310:0+
001||tt ||0
Ito'a+
oo1||tt ||0
099||tt| |90V
Machine
JB5272
3.8.2 Dimensions of motor shaft keys and its tolerances shall comply with the provisions of Table 3. Table 3
aux Buddha straight
diameter
width|| tt | |axis
street
90---100
circle
Public
Christine
3.8.4 The parallelism tolerance of the motor axis to the foot support surface is 0.75mm for the 315 base and 1mm for the 355 base: 3.8.5 The flatness tolerance of the motor foot support surface is 0.30 mm. 3.8.6 The symmetry tolerance of the keyway on the motor shaft extension is 0.05mm. 4 Technical requirements
4.1 The electric 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. 4.2 The motor should be capable of rated operation under the following altitude, ambient temperature and relative humidity conditions. 4.2.1 The altitude does not exceed 1000m,
4.2.2 The ambient air temperature changes with the seasons and does not exceed 40℃. mm | -15(.4.2.4. The monthly average maximum relative degree of the most certified film is 90%, and at the same time, the monthly average minimum temperature in the month is not higher than 25 (. 4.3 During the operation of the motor, the deviation of the power supply voltage and frequency from the rated value shall be in accordance with the provisions of GR755. 4.4 When the power, voltage and When the frequency is rated, the guaranteed values ??of motor efficiency and power factor should comply with the provisions of Table 5. The efficiency is measured by the indirect method, and the stray loss is calculated as 0.5% of the rated input. 20
JB 5272-- -91
620|| tt||820
o||tt| |18'0
because
88°0
000t| |tt||06
06'0||tt ||06°0
Same as
rate
06|| tt||886
M|| tt||work
JB 5272—91
At rated voltage, motor locked-rotor torque versus rated torque The guaranteed value of the ratio should comply with the provisions of Table 6, Table 6
315|| tt||355
1.0||tt| |1.0
speed,
r/ min
stall torque/rated torque
at rated voltage , the guaranteed value of the ratio of the minimum torque to the rated torque during the motor starting process should comply with the provisions of the table, Table 7
220|| tt||250
0.71||tt| |0.71
1000|| tt||rev
speed,
minimum torque/rated torque
0.83| |tt||0.83
0.71||tt ||0.71
0.5||tt ||J.
7 Under the rated voltage, the guaranteed value of the ratio of the motor's maximum torque to the rated torque, for the 315 base synchronous speed of 1500r/min and 4.7| |tt|| The higher one is 2.0 times, and the others are 1.8 times.
4.8 Under rated voltage, the guaranteed value of the ratio of motor locked-rotor current to rated current should comply with the provisions of Table 8 203
355| |tt||3000
JB5272..97
Table 8
Sync transfer||tt| |1000
speed,
locked rotor current/rated current
6.0||tt| |6.0
Note: When calculating the ratio of locked-rotor current to rated current, the rated current used should be based on rated power and rated electricity! , the efficiency and power national Sudoku training values ????(calculated Rui difference) are obtained,
The tolerance of the guaranteed electrical performance value of the motor shall comply with the provisions of Table 9 Table 9
4||tt| |5
efficiency
rate ()
power factor "cos"
locked-rotor torque||tt ||Minimum torque
Maximum torque
Locked rotor current
Weighing
-0.10(1-)
cellar
( 1cos)/6. At least -0.02
15% and 25% of the guaranteed value (only in Sichuan and Guangzhou, there are Nuoying parts regulations)
15% of the guaranteed value
10% of the guaranteed value
+20% of the guaranteed value
4.10 When the altitude and ambient air temperature comply with the provisions of Article 4.2, if the motor adopts Class F or Class F insulation The temperature rise limit of the winding (resistance method) is 80K or 105K respectively, and the allowable temperature of the bearing (thermometer method) should not exceed 95 (if the altitude of the test site or the ambient air temperature is different from the provisions of Article 4.2, the temperature rise The limit value should be revised in accordance with the provisions of GB755. 14.11 The assessment of accidental overcurrent of the motor should be in accordance with the requirements of GB755. 4.12 The motor should be able to withstand the maximum value specified in Article 4 of this standard in a thermal state and with a gradually increasing torque. It takes 15 seconds for the motor to rotate properly (measured by the narrow difference) without any sudden change in speed, stalling or harmful deformation. At this time, the electric length and frequency should be maintained at the rated value. If it is limited to equipment, it is allowed to use the measured current instead during the test. For torque measurement, the stator current should be equal to 1 of the phase. 1 is the torque multiple multiplied by the rated current value.
4.13 The motor should be able to withstand increasing the speed to its rated value under firm load conditions. 120% of the value, and there will be no non-vehicle deformation for 2 minutes. 4.14 The insulation resistance of the stator winding of the motor should not be less than 0.38M after the thermal state or temperature rise test. 04.15 The stator winding of the motor should be able to withstand the resistance for 1 minute. The voltage test does not cause breakdown. The frequency of the test voltage is 50%. It should be a sinusoidal waveform as much as possible. The effective value of the voltage is 1760V. This test should not be repeated on the same motor. If the user requests it, it is allowed to be installed again. Before starting operation, conduct another test at 1 ground! The test should be in accordance with the provisions of GB755. The fixed-hand winding of the motor should be able to withstand the inter-turn impact voltage test without breakdown. When the motor uses scattered windings. , the test impulse voltage peak value and test method are in accordance with the provisions of JB/Z346 and B/Z294. When the motor uses formed windings, a short-term lift-off voltage test can be carried out. The test is carried out when the motor is no-load, and the external applied voltage is 130% of the rated voltage. Voltage, time is 3min. When increasing the voltage value of 13102 rated voltage, it is allowed to increase the frequency or speed at the same time, and the stator winding of the motor shall not exceed 115% of the rated value. 4.17 The stator winding of the motor shall be tested according to the 40 alternating hot flash test method specified in GB12665. Carry out a 6-cycle test. The insulation resistance should be no less than 0.38M2 and be able to withstand the withstand voltage test specified in Article 4.15 without breakdown. The effective value of the supply voltage is 1:00V4.18 when the motor is no-load. The effective value of vibration speed, for synchronous speed of 3000r/min, should not exceed 4.3mms. For intermediate speeds of 1500r/min and below, level 1 should not exceed 2.8mm/s: level 2 should not exceed 4.5mm/s. 204
JB5272-91
The noise value of the A-weighted sound power level measured when the motor is no-load should not exceed the requirements in Table O. 4.79
Table 10
55~110
2110~220|| tt||220~355
103|| tt||106
Same as
turn||tt| |speed
57||tt| |dt(A)
4.20 When the three-phase power supply is balanced, the deviation between any phase of the three-phase no-load current of the motor and the three-phase average value will be huge! 10% of the phase mean.
4.21 The motor is not allowed to be reversely connected to the power supply for reversal or braking during operation. When the logical sequence of the outlet mark is the same as the electrical phase sequence direction of the main phase motor, the motor should rotate clockwise when viewed from the main shaft extension: for a synchronous speed of 1500r/imi: the motor with a degree of 1 should rotate in the opposite direction. When rotating in the clockwise direction, the user shall indicate 4.22
in the contract that the uneven hook of the motor air gap should not be greater than the requirements in Table 11. Table 11 | | tt | tt||0. 9
0 V0212+83-682-80-88
Wuzhong-
Air gap measured at 120 degrees from the machine Value,
4.23 The motor has a cylinder Shaft shaft extension, if there is another agreement between the two parties, it is allowed to be made into two shaft extensions. The third shaft extension should be able to transmit the rated power, and they can only be driven by couplings.
4.24 motors can be made with three or six outlet terminals (the user should indicate this in the contract). Viewed from the extension end of the main shaft, the junction box of the motor is placed on the right or above the factory base. If there is another agreement between the two parties, the junction box is allowed to be placed on the left side of the machine base. There should be a grounding terminal in the junction box of the motor, and another grounding terminal should be provided on the base. A grounding mark should be set near the grounding terminal. This mark should be guaranteed to be indelible throughout the motor's service life.
5 Inspection Rules
5.1 Each motor must pass the inspection before leaving the factory, and shall be accompanied by a product inspection certificate. 5.2 Each motor must undergo inspection and testing. The inspection and test items include: a. | |tt | The insulation resistance of the state is not low (strictly stipulated in Article 4.14 of this standard), the motor with three outlet terminals does not need to measure the insulation resistance of the stator winding between phases: Measurement of the DC resistance of the stator winding in the actual cold state: C.
Withstand voltage test:
Inter-turn impulse withstand voltage or short-term increased voltage test; determination of no-load current and loss:| |tt||Note: It is necessary to measure the no-load characteristic curve g during the type test.
Determination of locked-rotor current and loss;
Note: It is necessary to measure the locked-rotor characteristic curve during the type test. , h,
Determination of noise (according to the provisions of Article 5.6 of this standard): 20
JB 5272-91
Measurement of vibration (according to the provisions of Article 5.6 of this standard) . i
5.3 Type testing must be carried out whenever one of the following situations occurs: after identification and finalization, the first trial production or small batch trial production; a.
h.||tt ||When changes in the design or process of the motor are enough to cause changes in certain characteristics and parameters; when there are unacceptable deviations between the inspection test results and the previously conducted type test results; d.
Sampling tests are conducted regularly, at least once a year. 5.4 Type test items for electric motors include: a.
All items of inspection test;
Overflow test:
Determination of efficiency and power factor;
Short-time over-torque (or over-current) test :
Determination of maximum torque;
Determination of minimum torque during starting;
Overspeed test.
5.5. The mechanical inspection items of the motor include: a. Rotation inspection: When the motor rotates, it should be smooth and brisk without stagnation; b. Appearance inspection: Check whether the motor is assembled completely and correctly, and the paint on the motor surface should be dry, complete, uniform, and free of stains, damage, cracks, etc.;
℃. Inspection of installation dimensions, external dimensions and key dimensions: The installation dimensions and external dimensions should comply with the provisions of Article 3.8.1 of this standard, and the key dimensions should comply with the provisions of Article 3.8.2 of this standard; d. Radial runout, parallelism and flatness of the foot support surface should comply with the provisions of Articles 3.8.3, 3.8.1 and 3.8.5 of this standard: The symmetry of the chain groove should comply with the provisions of Article 3.8.6 of this standard, and the flatness of the foot support surface and the symmetry of the keyway are allowed to be inspected on the parts! . 5.6 Articles a and b of Article 5.5 of this standard must be inspected for each unit, and Articles h and i of Article 5.2 and Articles c and d of Article 5.5 can be judged and inspected. The inspection method is formulated by the manufacturer.
5.7 The tests specified in 5.2 (except e, h and i) and 5.4 of this standard shall be carried out in accordance with GB1032. When loose-embedded windings are used, c in 5.2 shall be carried out in accordance with JB/Z294. h in 5.2 shall be carried out in accordance with GB10069. 5.2.1 is carried out in accordance with GB1310068. The inspection of the installation dimensions and tolerances specified in 5.5 is carried out in accordance with GB4772.1. 5.8 The test of the motor housing protection level and the 40°C alternating damp heat test and the air gap unevenness inspection can be carried out when there are major changes in the product structure or process. The test method for the housing protection level is carried out in accordance with GB4942.1, and the 40°C alternating damp heat test is carried out in accordance with GB12665.
6 Marking and packaging
6.1 The nameplate material and the data engraving method on the nameplate should ensure that the handwriting is not easily erased during the entire period of use. 6.2 The nameplate should be fixed on the motor body The upper part of the seat should be marked with the following items: a.
Name of manufacturer;
Name of motor;
Model of motor;
Enclosure protection grade;
Rated frequency (Hz);
Rated power (kW);
Rated current (A);
Rated speed (r/min);
Rated voltage (V);
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