This standard specifies the type, basic parameters and dimensions, technical requirements, inspection rules, test methods, and marking and packaging requirements of YLJ series torque two-phase asynchronous motors (hereinafter referred to as motors). This standard applies to winding motors (IP44 frame size 100-1601IP21 frame size 63.180). All motors with other structural types and special performance requirements belonging to this series of motors can also refer to it. JB/T 6297-1992 Technical conditions for YLJ series torque three-phase asynchronous motors JB/T6297-1992 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
Technical Conditions for YLJ Series Torque Three-phase Asynchronous Motors Subject Content and Scope of Application
JB/T 6297-92
This standard specifies the types, basic parameters and dimensions, technical requirements, inspection rules, test methods, and marking and packaging requirements of YLJ series torque three-phase asynchronous motors (hereinafter referred to as motors). This standard applies to YLJ series torque three-phase asynchronous motors for winding (IP44 frame size 100~160, IP21 frame size 63~180), and all motors derived from this series of motors with other structural types and special performance requirements can also refer to it for implementation. 2 Reference standards
Basic technical requirements for rotating electrical machines
GB4942.1 Motor housing protection classification
GB1993
Motor cooling method
Motor structure installation type and code
GB4772.1 Motor dimensions and tolerances Motors with frame size 36 to 400 and flange number FF55-FF1080 or FT55 to FT1080 GB12665 ​​
GB10069
GB10068
GB1032
JB/Z294
JB/ Z346
Wet heat test requirements for motors used under general environmental conditionsDetermination method and limit of noise of rotating motors
Determination method and limit of vibration of rotating motors
Test method of three-phase asynchronous motors
Packaging, storage and transportation index marking
Test method for turn-to-turn insulation of loose-embedded windings of AC low-voltage motorsTest limit of turn-to-turn insulation of loose-embedded windings of AC low-voltage motors3. Types, basic parameters and dimensions
3:1The enclosure protection grade of the motor is IP44 (frame size 100~160) and IP21 (frame size 63~180) (see GB4942.1). 3.2 The cooling method of the motor is (IC0141 (IP44, frame size 100~160), IC00 (IP21, frame size 63~90) and IC06 (IP21, frame size 100180) (see GB1993). 3.3 The structure and installation type of the motor are IMB3, IMB5 and IMB14 (see GB:997). 3.4 The motor rating is based on the non-periodic working rating of the S9 working system with continuous changes in load and speed from no-load to stall. 3.5 The rated rate of the motor is 50Hz and the rated voltage is 380V. 3.6 Rated stall torque and rated stall current. The rated stall torque and rated stall current are the rated Constant voltage. The stall torque and stall current measured at the rated frequency according to the specified allowable stall time limit.
The corresponding relationship between the motor frame number, synchronous speed and rated stall torque shall comply with the provisions of Table 1 and Table 2. The motor shall be manufactured according to the following rated stall torques: 0.5, 1.0, 1.6, 2.0, 3.0, 4.0, 5.0, 6.0, 10, 16, 25, 40, 60, 80, 100, 125, 160, 200 Nm3.7 The allowable stall time of the motor shall not be less than the provisions of Table 1 and Table 2 Ministry of Machinery and Electronics Industry 1992--06--26 Approved 1993-01-01 Implementation
Frame number
JB/T 6297-92
Table 1 (Applicable to protection grade IP44)
Synchronous speed
Rated stall torque
(Applicable to protection grade IP21)
Synchronous speed
Rated stall torque
Allowable stall
Allowable stall
3.8 Motor dimensions and tolerances
Motor installation dimensions and tolerances The difference shall comply with the provisions of Table 3 to Table 8, and the overall dimensions shall not be greater than those specified in Table 3 to Table 8. 3.8.1
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26167918
Lu number
920 year
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26629/
Lujundiao
JB/T 6297--92
The dimensions and tolerances of the motor shaft extension key shall comply with the provisions of Table 9. Table 9
The radial runout tolerance at half the shaft extension length shall comply with the provisions of Table 10. Table 10
Shaft extension diameter
>10~18
>18~30
>30~50
Western runout tolerance
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 113.8.4
.
>95~230
>230~300
The flatness tolerance of the motor foot support shall comply with the provisions of Table 12. 3.8.5
AB size
>100~160
>160~250
>250~400
Runout tolerance
Surface tolerance
Rated stall
1500z/min
JB/T6297—92
Continued Table 15 (Applicable to protection grade IP21) Maximum stall current
1000r/min
750/min
Rated stall
1500r/min
Maximum stall current
1000r/min
750r/min
4.5. Under rated voltage and rated frequency, the maximum change rate of torque of the measured mechanical characteristic curve within the range of 1/4 to 3/4 synchronous speed shall not exceed 10%.
Maximum change rate of torque. Calculate as follows: d
×100%bzxz.net
×100%
Wherein; T, corresponds to the torque value at speed n on the linear mechanical characteristic curve formed by connecting the two-point torque values ​​at 1/4 and 3/4 synchronous speed on the measured mechanical characteristic curve, N·m; T- corresponds to the torque value at speed n' on the measured mechanical characteristic curve, N·m; - is the speed corresponding to the maximum torque deviation between the measured mechanical characteristic curve and the linear mechanical characteristic, r/min. 4.6, the tolerance of the rated stall torque of the motor is -15% and +25% of the guaranteed value. 4.7 The A-weighted sound power level value measured when the motor is no-load should not be greater than the provisions of Table 16 and Table 17. The tolerance of the noise limit is +3dB (A).
(Applicable to protection grade IP44)
Rated stall torque
1500r/min
Sound power level
1000r/min
750r/min
Cooling method
IC0141
-JB/T6297--92
Parallelism tolerance of motor axis to bottom spleen support surface shall not exceed 0.40mm. The symmetry tolerance of keyway on motor shaft extension shall comply with the provisions of Table 13. Table 13
Technical requirements
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. 4.1
4.2 The altitude, ambient air temperature and relative humidity conditions of the motor operation site shall comply with the following provisions. 4.2.1 The altitude shall not exceed 1000m.
4.2.2 The maximum ambient air temperature varies with the seasons, but does not exceed 40°C. mm
Note: If the motor is specified to be used under the conditions where the sea cover exceeds 1000m or the ambient air temperature is higher or lower than 40°C, it should comply with the provisions of GB755. The minimum ambient air temperature is -15°C.
The average maximum relative humidity in the wettest month is 90%, and the average minimum temperature in the month is not higher than 25°C. 4.2.4
4.3 The maximum locked-rotor current value of the motor at rated voltage, rated frequency and actual cold state shall not exceed the provisions of Table 14 and Table 15. The ratio k of the torque at 1/4 and 3/4 synchronous speed on the actual measured mechanical characteristic curve of the motor at rated voltage and rated frequency is called the characteristic coefficient. For motors with frame sizes of 132 and below, k ≥ 2.0, and for motors with frame sizes of 160 to 180, k ≥ 1.6.
Rated stall torque
Rated stall
1500 x/mic
vertical (applicable to protection grade P44)
Maximum stall current
1500r/min
1000t/min
(applicable to protection grade IP21)
Maximum stall current
1000 r/mig
750 x/min
Rated stall
1500 r/main
750z/min
Maximum stall current
1000/min
750r/min
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