JB/T 5269-1991 Technical requirements for YR series (IP23) three-phase asynchronous motors (frame size 160 to 280)

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. This standard is effectively used for YR (IP23) three-phase asynchronous motors (frame size 160~280). Various series of motors derived from this series of motors can also be implemented with reference. JB/T 5269-1991 Technical conditions of YR series (IP23) three-phase asynchronous motor (frame size 160～280) JB/T5269-1991 Standard download and decompression password: www.bzxz.net

Machinery Industry Standard of the People's Republic of China
YR series (IP23) three-phase asynchronous motor
Technical conditions
(Frame number 160~~280)
1 Theme content and Scope of application
JB5269---91
This standard specifies the motor type, basic parameters and dimensions, technical requirements, test methods and inspection rules, as well as marking and packaging requirements.
This standard applies to YR series (IP23) three-phase asynchronous motors (frame size 160~~280) (hereinafter referred to as motors). All series of motors derived from this series of motors can also be implemented with reference. 2 Reference standards
GB755 basic technical requirements for rotating motors
GB4942.1 Motor shell protection classification
GB1993 rotating motor cooling method
GB 997
Motor structure And installation type code
GB 4772.1
GB 10068
GR 10069
GB1032
Motor size and tolerance Frame number 36400 Rotating motor vibration measurement methods and limits for motors with flange numbers FF55~FF1080 or FT55~-FT1080
Rotating motor noise measurement methods and limits
Test methods for three-phase asynchronous motors
Packaging, storage and transportation pictorial mark
Humid heat test requirements for motors used under normal environmental conditions GB 12665
JB/Z346
AC low-voltage motors Test method for inter-turn insulation of loosely embedded windings Test limits for inter-turn insulation of loosely embedded windings of AC low-voltage motors 3 Types, basic parameters and dimensions
3.1 The shell protection level of the motor is IP23 (see GB4942.1). 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 motor rating is a continuous rating based on the continuous working system (S1). The rated frequency of the 3.5 motor is 50Hz. The rated voltage is 380V, the stator winding is ^ connection, and the rotor winding is Y connection. 3.6 The motor should be manufactured according to the following rated power: 4, 5.5, 7.5, 11, 15, 18.5, 22, 30, 37, 45, 55.75, 90, 110.132kW3.7 The corresponding relationship between the motor’s frame number, speed and power is as shown in Table 1 Provisions. The Ministry of Mechanical and Electronics Industry of the People's Republic of China approved 168
1992-07-01 implementation on 1991-06-28
Frame number
132|| tt||JB5269-91
Table 1
Same as
speed, r/min
rate, kw
22||tt ||30
Note: The numbers 1 and 2 after M and L are respectively Represents different powers at the same base and speed. 3.8 The installation dimensions and tolerances of the motor should comply with the requirements in Table 2. The overall dimensions should not be larger than those specified in Table 2. 750
JB5269-
o29|| tt||C01
janay||tt| |191023
Outside
public| | tt | tt||ofl
Pingxi
1091|| tt||WO
Machine
JB5269-91
3.9 The size and tolerance of the motor shaft extension key should comply with Table 3 Regulations. Table 3
Shaft diameter
Key|| tt||width
14. . 043
18--0.043
22_0. 052
The radial circular runout tolerance at half the point should not be greater than the requirements in Table 4. Shaft extension length
Table 4
Shaft extension diameter
>30~50
>50-~80
Height| |tt||0.090
Circular runout tolerance||tt ||0.05
3.11 The parallelism tolerance of the motor axis to the foot supporting surface is 0.5mm for frame sizes 250 and below. The 280 frame size is 1mm: 3.12 The flatness tolerance of the motor foot support surface is 0.20mm for the 200 and below frame size, and 0.25mm for the 225 and above frame size.
3.13 The keyway on the motor shaft extension The symmetry tolerance shall comply with the provisions of Table 5. Table 5
4 technical requirements
width F
18||tt ||20
weighing degree
public
4.1||tt| |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. 4.2 The motor shall be capable of rated operation under the following altitude, ambient air temperature and ambient air relative humidity conditions. 4.2.1The altitude does not exceed 1000m.
4.2.2 The maximum temperature of ambient air changes with the seasons. But not exceed 40℃. imm | 4.2.3 The minimum temperature of ambient air is -15℃. 4.2.4 The average maximum relative humidity of the wettest month is 90%, and the average minimum temperature of the month is not higher than 25C. 4.3 The deviation of the power supply voltage and frequency from the rated value during the operation of the motor should be in accordance with the provisions of GB755. 4.4 When the power, voltage and frequency of the motor are rated, the guaranteed values ??of efficiency and power factor should comply with the provisions of Table 6 [7
4||tt| |5.5
84|| tt||86.5
91.5||tt| |92.5
Effect
JB5269—91
Table 6
Synchronization
Rate, %| |tt||81
89||tt ||89.5
Note: Efficiency stray loss is 0.5% of rated input The value is determined by the indirect method. Speed,
4.5 motor rotor open circuit voltage And the value preservation of the rotor current should comply with the provisions of Table 7. Table 7
90|| tt||110
61||tt| |61
electricity
53|| tt||65
118||tt| |Stream,
turn| |tt||speed·
419|| tt||turn
power factor.cosg
0.82| |tt||0.85
279||tt ||260
(3.73||tt| |0.78
1 t||tt ||153
4.6 | | tt | | 4.7 | | tt | | JB 5269-91 | Table 8
90|| tt||110
Same as
The tolerance of the electrical performance preservation of the motor should comply with the provisions of Table 9. Table 9 | | tt | |Rated power is 45kW and below
Rated power is above 45kw
Power factor cosg
Maximum torque
Rotor open circuit voltage
Rotor current|| tt||scale
moment/amount
2.8| |tt||2.2
speed, r/min
0. 15(19)
- -0. 10(13)
rotation
moment
capacity
(1-cosd) is at least 0. 02
guaranteed value -10 %
±10% of guaranteed value
10% of guaranteed value
2.2|| The tt||8 motor adopts Class B insulation. When the altitude and ambient air temperature comply with the provisions of Article 4.2, the temperature rise limit of the motor winding (Electric Yang 4.8
method) and the temperature rise limit of the collector ring (Thermometer method) is 80K; the allowable temperature of the bearing (thermometer method) should not exceed 95 (if the altitude or ambient air temperature of the test site is different from the provisions of Article 4.2, the temperature rise limit should be revised according to the provisions of (3755 4.9) In a hot state and with gradually increasing torque, the motor should be able to withstand the maximum rotational speed specified in Article 4.6 of this standard (taking into account the tolerance) without sudden rotation speed, stalling and harmful deformation for 15 seconds. , the voltage and frequency should be maintained at the rated value 4.10 The motor should be able to withstand 1.5 times the rated current can last for no less than 2 minutes in an accidental overcurrent test without damage. 4.11 Under no-load condition, the motor should be able to withstand increasing the speed to 120% of its rated value for 2 minutes without causing harmful deformation. The insulation resistance of the motor stator winding should not be less than 0.38MS2 in the hot state or after the temperature rise test. , the insulation resistance of the rotor winding 4.12
is not less than 0.5M2
JB5269-91
4.13 The winding of the motor should be able to withstand the withstand voltage for 1min To test without breakdown, the frequency of the test electricity is 50Hz, and it should be a sinusoidal waveform as much as possible. The effective value of the voltage for the stator is 1760V, and the rotor is 1000 times the open circuit voltage. 4.14 The stator winding of the motor should be able to withstand the inter-turn impulse withstand voltage test without breakdown. The peak value of the impulse test voltage shall be in accordance with J13/2345.
After the 4.15 motor is subjected to 6 cycles of testing according to the 40°C alternating damp heat test method specified in GB12665, the insulation resistance of the stator group should not be less than 0.38MQ, and the insulation resistance of the rotor winding should not be less than 0.5MQ, and can The surface withstands the withstand voltage test specified in Article 4.13 without breakdown. But the effective value of the voltage is 1500V for the stator winding and 1700V for the counter-rotated winding. 4.16 The effective value of the vibration speed measured when the motor is no-load should not exceed the value specified in the grade selected in Table 10 when ordering Table 10
Vibration|| tt||Speed
Valid value
Level 1
Level 2
160~225
1.8||tt ||2.8
2-225-~280
4.17 The noise value of the A-weighted sound power level measured when the motor is no-load , should comply with the values ??specified in Table 11. The tolerance for noise production values ??is +3dR(A).
Table 11
15| |tt||18.5
90||tt ||110
82| |tt||85www.bzxz.net
speed, r/min
dB(A)
3 When the three-phase power supply is balanced, the three-phase The deviation of any phase no-load current from the average value of the three phases should not be large} 10% of the average value of the two phases 4.18
When the motor is stationary, the deviation of any phase of the three-phase voltage of the rotor from the three-phase average value should not be greater than 2% of the three-phase average value. 4.20
The motor is inspected and tested When , the no-load current and loss should be within a certain data range, and the data range should be able to ensure that the motor performance 1.74
complies with the provisions of Articles 4.4~~4.7 of this standard. JB 5269-91
4.21 The unevenness of the motor air gap should not be greater than the requirements in Table 12. Table 12
0.75| |tt||18.0
In the table: ——Nominal value of air gap;
Uneven hook value, which is defined as
No./82+62+8-8102-8.0 -8,8]
where: 81, 02, 0 are gas values ??measured 120° apart gap value. 4.22 The motor is only made with a cylindrical shaft extension. 0.55
0.65| |tt||19.0
4.23 The stator of the motor should be made with six outlet terminals and the rotor should be made with three outlet terminals. Viewed from the extended end of the main shaft, the junction box of the motor should be placed on the right or above the machine base. If the two parties otherwise agree, the junction box is allowed to be placed on the left side of the machine base. There should be a ground terminal in the motor's junction box. For motors with a rated output exceeding 100kW, an additional grounding terminal should be installed on the base, and a grounding mark should be set near the grounding terminal. This mark should be guaranteed to be indelible during the entire period of use of the motor. 4.24 When the alphabetical order of the outlet terminal mark is the same as the voltage phase sequence direction of the three-phase power supply, the motor should rotate clockwise when viewed from the main shaft extension.
5 Inspection Rules
5.1 Each motor must pass the inspection before leaving the factory, and should be accompanied by a product certificate. 5.2 Each electric motor shall undergo inspection and testing. The inspection and test items include: a. Measurement (the insulation resistance in the cold state can be measured during the inspection test, but b.
ensures that the insulation resistance in the hot state is not lower than the provisions of Article 4.12 of this standard): c.
d.|| tt||c
stator and rotor windings in actual cold Determination of DC resistance under normal conditions; determination and rotor winding to chassis and phase-to-phase withstand voltage tests; inter-turn insulation test;
determination of no-load current and losses;
determination of rotor parallel circuit voltage ;
Overspeed test (according to the provisions of Article 5.6 of this standard); Measurement of noise (according to the provisions of Article 5.6 of this standard); Measurement of vibration (according to the provisions of Article 5.6 of this standard). 5.3 Type testing must be carried out in any of the following situations: a.
The first time the manufacturer has passed the appraisal and finalization During trial production or small batch trial production; when the change in motor design or process is enough to cause changes in certain characteristics and parameters, when there is an impermissible deviation between the inspection test results and the previously conducted type test results; when the motors produced in batches are regularly Random examinations will be conducted... times every year. When the number of random tests required is too large, the test interval can be appropriately extended, but the random test should be conducted at least once every two years. 5.4 The type test items of the electric motor include: 175
All items of inspection test:
fast load test;| |tt||Temperature rise test:
Determination of efficiency and power factor:
Short-time over-torque test;||tt| |Determination of maximum torque;
Determination of rotor current.
Note: If there are difficulties in measuring the rotor current, the assessment may be temporarily skipped. 5.5 The mechanical inspection items of the motor include: JB526991
a. Rotation inspection: When the motor rotates, it should be smooth and brisk, without stagnation; b Appearance inspection: Check whether the assembly of the motor is complete and correct. The paint on the surface of the motor should be dry, complete, even, and free of stains, bumps, cracks, etc.; || tt||心． Inspection of installation dimensions, overall dimensions and key dimensions: The installation dimensions and overall dimensions should comply with the provisions of Article 3.8 of this standard, and the size of the keys should comply with the provisions of Article 3.9 of this standard; d. Inspection of circular runout, parallelism and flatness of the foot supporting surface and keyway symmetry: the circular runout tolerance should comply with the provisions of Article 3.10 of this standard. The parallelism tolerance and flatness tolerance of the foot support surface shall comply with the provisions of Articles 3.11 and 3.12 of this standard respectively. The symmetry of the keyway shall comply with Clause 3 of this standard.13 provisions. The flatness of the foot support surface and the symmetry of the keyway allow inspection on the components.
Inspection of collector rings and brush consumption: The surface of collector rings should be smooth and no blisters are allowed. The brushes are in good contact with the collector ring, and there is no obvious spark during operation c.
5.6 A, h and c in Article 5.5 of this standard must be inspected on each machine. Hi and i in Article 5.2 and c and d in Article 5.5 can be randomly inspected. The random inspection method shall be formulated by the manufacturer.
5.7 The test methods specified in Articles 5.2 (except e, i and i) and 5.4 of this standard shall be carried out in accordance with (B1032). The inspection of installation dimensions and tolerances specified in Article 5.5 shall be carried out in accordance with GB4772.1 shall be carried out. Article 5.2 e shall be carried out according to JB/7.294. Article 5.2 j shall be carried out according to GB10068. 5.8 Motor shell protection level test, 40C alternating current test. The damp heat test and air gap unevenness inspection can be carried out when the product structure is finalized or when the structure and process are significantly changed. The test method for the shell protection level is carried out in accordance with GB4942.1, and the 40C alternating damp heat test is carried out in accordance with GB12665 ??|| tt||6 Logo, packaging and warranty period
6.1 The nameplate material and the marking method of the data on the nameplate should ensure that the writing is not easy to burn during the entire service life of the motor. 6.2 The nameplate should be fixed on the motor frame. In the upper half, the items that should be marked are as follows: a
g.||tt| |h.
Manufacturer name;
Motor name (three-phase asynchronous motor); Motor model:
External protection level (other nameplate is allowed) ): rated power;
rated frequency;
rated current:
rated voltage;
rated speed;
power factor;
insulation level;
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