This standard specifies the type, basic parameters and dimensions, technical requirements, inspection rules and test methods, and packaging, marking and warranty requirements of YH series (IP44) high slip three-phase asynchronous motors. This standard applies to YH series (IP44) high slip three-phase asynchronous motors with frame sizes of 80 to 280 (hereinafter referred to as motors). JB/T 6449-1992 Technical conditions for YH series (IP44) high slip three-phase asynchronous motors (frame sizes 80 to 280) JB/T6449-1992 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T6449-1992
YH series (IP44) high slip
Technical conditions for three-phase asynchronous motors
Frame size 80~280)
Published on August 6, 1992
Implementation of the Ministry of Machinery and Electronics Industry of the People's Republic of China on January 1, 1993
Mechanical Industry Standard of the People's Republic of China
YH series (IP44 ) High slip rate
Technical conditions for three-phase asynchronous motors
(Frame size 80～280)
1 Subject content and scope of application
JB/T6449-1992
Replaces ZBK22004-1989
This standard specifies the type, basic parameters and dimensions, technical requirements, inspection rules and test methods, and packaging, marking and warranty requirements of YH series (IP44) high slip rate three-phase asynchronous motors. This standard applies to YH series (IP44) high slip rate three-phase asynchronous motors (hereinafter referred to as motors) with frame sizes of 80～280. 2
Referenced standards
Rotating electrical machines
GB1993
Basic technical requirements
Motor housing protection classification
Motor cooling method
Motor structure and installation type code
Motors with frame sizes 36~400 and flange sizes FF55~FF1080 or FT55~FT1080 GB 4772.1
GB12665
GB10069
GB10068
GB1032
JB/Z294
JB/Z346
Motor dimensions and tolerances
Damp heat test requirements for motors under normal environmental conditions Rotating motors
Rotating motors
Noise measurement method and limit
Vibration measurement method and limit
Test methods for three-phase asynchronous motors
Test methods for turn-to-turn insulation of AC low-voltage motor loose-embedded windings Test limits for turn-to-turn insulation of AC low-voltage motor loose-embedded windings Packaging, storage and transportation graphic symbols
Type, basic parameters and dimensions
The enclosure protection grade of the motor is IP44 (see GB4942.1). The cooling method of the motor is IC0141 (see GB1993). The structure and installation type of the motor are IMB3, IMB5, IMB6, IMB7, IMB8, IMB35, IMV1, IMV3, IMV5, IMV6, IMV15 and IMV36 (see GB997), and they are manufactured according to the provisions of Table 1. Table 1
80~160
180~225
250~280
Structure and installation
B3.B5.B6.B7.B8.B35, V1.V3.V5, V6.V15.V36B3, B5, B35.V1
B3, B35V1
Ministry of Machinery and Electronics Industry of the People's Republic of China 1992- 08-06 Approved
1993-01-01 Implementation
JB/T6449-1992
3.4 ​​The motor rating is based on the intermittent cycle duty system S3; the negative rotation duration rate is divided into 15%, 25%, 40%, and 60% (each duty cycle is 10 minutes), but the rated load duration rate when outputting rated power is only one of them. 3.5 The rated frequency of the motor is 50Hz and the rated voltage is 380V. The rated power of 3kW and below is Y-connected, and the other rated powers are all △-connected.
3.6 The motor shall be manufactured according to the following rated powers (at rated duty cycle): 0.55, 0.75, 1.1, 1.5, 2.2, 3, 4, 5.5, 7.5, 11, 15, 18.5, 22.30, 37, 45, 55, 75, 90 kW. 3.7
The correspondence between the motor frame number and the synchronous speed, duty cycle and power shall be in accordance with the provisions of Table 2. The dimensions and tolerances of the motor shall comply with the following provisions. 3.8.1
The installation dimensions and tolerances of the motor shall comply with the provisions of Tables 3 to 6; the overall dimensions shall not be greater than those specified in Tables 3 to 6. Table 2
Frame size
0.9c.80.750.650.750.650.6
2.4|2.22.0
3.33.02.1
18.516.514.813
Speed.r/min
Rate, %
Rate, kw
17.815.817
Note:) The numbers 1 and 2 following S, M, and 1 in the frame size represent different powers under the same frame size and synchronous speed, 15
JB/T6449-1992
②The bold data in the table are the rated powers, and the corresponding duty cycle is the rated duty cycle of the corresponding specifications. ③ The power with a duty cycle of 100% indicates the output power of the motor when it is running in continuous duty system S1. 3
Kai Seat number
Basic Basic
JB/T 64491992
YHI60 ~ 280
Motor installation and overall dimensions with base with foot and no flange on end cover
±4.065+0.611140
Note: 1GE=DG, the limit code difference of GE is for 80 seat number 2) K Li position tolerance is based on the axis of the shaft at +
, and for 90~280 seat numbers ()
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,1) GE=DG,
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JB/T 64491992
For machine seat numbers 50~225, see", +6.20
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JB/T 64491992
Motor installation and external dimensions with flange on the end R
Root service code
Minimum: 1) GE=D=G, G machine service sales for 80% [+0.10) for machine size 50~225 (+.2) In the service installation, the model is based on the bright model, JB/T 64491992
YH180200
Motor installation and external dimensions without base, flange on the end, shaft extension downward Table 6
Machine number Flange number Number of shares
2110±0.430
+0,030
.6.865+0. 01140|
±0,506
Note: 1)GE=D=G. The limit deviation of GE is|+0.202) P dimension is the maximum limit value
3) The position tolerance of S is based on the axis of the shaft extension.043
3503c0±0
Muben Limit
Lianpianmei
Position Management
YH225280
Aduanmei
ACADHF
120315F
475345610
515385630
580410720
Most Useful
JB/T 64491992
YH180200
Motor installation and dimensions without foot, flange on the base, shaft downward
002110|±0.430
60+0,030
4.6.86+0.011140|±0.500
Note: 1》GE-DG.GE's rated tolerance is +2》P dimension is the maximum limit
3》S hole position tolerance is based on the auxiliary line of the shaft 3. 8.2
3002506.07
350300±0.
0|350±0. 018450
500450
±0, 020550
Benfic Limit
JB/T64491992
The flatness tolerance of the motor foot support surface shall comply with the provisions of Table 7. Table 7
Frame Size
80~112
132~200
225~280
Measurement Deviation
Position Reason
Surface Tolerance
3.8.3 The parallelism tolerance of the motor axis to the foot support surface shall comply with the provisions of Table 8. Table 8
Frame Size
80~250
The dimensions and tolerances of the motor shaft extension key shall comply with the provisions of Table 9. Table 9
Shaft extension diameter
Basic size
Limit deviation
Railway tolerance
Basic size
YH225280
Limit end benefit
Overall dimensions
ACADHF
380285500
120131515501850
475345610
515385650
580410720
Limit deviation
JB/T 64491992
The flatness tolerance of the motor foot supporting surface shall conform to the provisions of Table 7. Table 7
132~200
225~280
The parallelism tolerance of the motor axis to the foot support surface shall comply with the provisions of Table 8. Table 8
The dimensions and tolerances of the motor shaft extension key shall comply with the provisions of Table 9. Table 9
Shaft extension diameter
Basic size
Limit deviation
Basic size
The symmetry tolerance of the keyway on the motor shaft extension shall comply with the provisions of Table 10. Table 10
Symmetry tolerance
The radial runout tolerance at half the length of the motor shaft extension shall comply with the provisions of Table 11. Table 11
Shaft straightness
Circular runout tolerance
>30~50
Limit deviation
>50~80
3.8.7 The radial circular runout tolerance of the outer circle of the motor flange stop to the motor axis and the end circular runout tolerance of the flange matching surface to the motor axis shall comply with the provisions of Table 12.
Flange stop diameter
Circular runout tolerance
4 Technical requirements
130~230
>230350
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
JB/T6449-1992
4.2 The motor shall be able to operate at rated speed under the following conditions of altitude, ambient air temperature and relative condensation of ambient air. 4.2.1 The altitude shall not exceed 1000m.
4.2.2 The maximum ambient air temperature varies with the seasons, but shall not exceed 40℃. Note: If the motor is specified to be used at an altitude of more than 1000m or the ambient air temperature is higher or lower than 40℃, the provisions of GB755 shall apply. 4.2.3 The minimum ambient air temperature is -15℃. 4.2.4 The average maximum relative humidity in the most chaotic month is 90%, and the average minimum temperature in the month is not higher than 25℃. 4.3 The deviation of the power supply voltage and frequency from the rated value during the operation of the motor shall comply with the provisions of GB755. 4.4 When the power, voltage, frequency and duty cycle of the motor are rated, the guaranteed values ​​of its slip rate, efficiency and power factor shall comply with the provisions of Table 13; when it is operated according to other three conditions and duty cycle or continuous duty system S1, its slip rate, efficiency and power factor may be different from the provisions of Table 13.
Note: The efficiency is determined by the loss analysis method of the measured stray loss. 4.5
speed t/min
power factor, co5
Under rated voltage, the guaranteed value of the ratio of the motor's stall torque to the rated torque shall comply with the provisions of Table 14. 0. 69
JB/T6449-1992
speed.r/min
Staple torque/rated torque
Under rated voltage, the guaranteed value of the ratio of the motor's maximum torque to the rated torque is equal to the guaranteed value of the ratio of the stall torque to the rated torque. Under rated voltage, the guaranteed value of the minimum torque during motor starting is 0.5 times the guaranteed value of the stall torque. Under rated voltage, the guaranteed value of the ratio of the motor's stall current to the rated current shall comply with the provisions of Table 15. Table 15
80~160
180200
225~280
Speed, r/min
Locked rotor current/rated current
Note: When calculating the ratio of locked rotor current to rated current, the rated current value used should be obtained according to the guaranteed values ​​of rated power, rated voltage, efficiency and power factor.
The tolerance of the guaranteed value of the electrical performance of the motor at the rated duty cycle should comply with the provisions of Table 16.3 The parallelism tolerance of the motor axis to the foot support surface shall comply with the provisions of Table 8. Table 8
Frame size
80~250
The dimensions and tolerances of the motor shaft extension key shall comply with the provisions of Table 9. Table 9
Shaft extension diameter
Basic size
Limit deviation
Railway tolerance
Basic size
YH225280
Limit end benefit
Overall dimensions
ACADHF
380285500
120131515501850
475345610
515385650
580410720
Limit deviation
JB/T 64491992
The flatness tolerance of the motor foot supporting surface shall conform to the provisions of Table 7. Table 7
132~200
225~280
The parallelism tolerance of the motor axis to the foot support surface shall comply with the provisions of Table 8. Table 8
The dimensions and tolerances of the motor shaft extension key shall comply with the provisions of Table 9. Table 9
Shaft extension diameter
Basic size
Limit deviation
Basic size
The symmetry tolerance of the keyway on the motor shaft extension shall comply with the provisions of Table 10. Table 10
Symmetry tolerance
The radial runout tolerance at half the length of the motor shaft extension shall comply with the provisions of Table 11. Table 11
Shaft straightness
Circular runout tolerance
>30~50
Limit deviation
>50~80
3.8.7 The radial circular runout tolerance of the outer circle of the motor flange stop to the motor axis and the end circular runout tolerance of the flange matching surface to the motor axis shall comply with the provisions of Table 12.
Flange stop diameter
Circular runout tolerance
4 Technical requirements
130~230
>230350
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
JB/T6449-1992
4.2 The motor shall be able to operate at rated speed under the following conditions of altitude, ambient air temperature and relative condensation of ambient air. 4.2.1 The altitude shall not exceed 1000m.
4.2.2 The maximum ambient air temperature varies with the seasons, but shall not exceed 40℃. Note: If the motor is specified to be used at an altitude of more than 1000m or the ambient air temperature is higher or lower than 40℃, the provisions of GB755 shall apply. 4.2.3 The minimum ambient air temperature is -15℃. 4.2.4 The average maximum relative humidity in the most chaotic month is 90%, and the average minimum temperature in the month is not higher than 25℃. 4.3 The deviation of the power supply voltage and frequency from the rated value during the operation of the motor shall comply with the provisions of GB755. 4.4 When the power, voltage, frequency and duty cycle of the motor are rated, the guaranteed values ​​of its slip rate, efficiency and power factor shall comply with the provisions of Table 13; when it is operated according to other three conditions and duty cycle or continuous duty system S1, its slip rate, efficiency and power factor may be different from the provisions of Table 13.
Note: The efficiency is determined by the loss analysis method of measured stray losses. 4.5
speed t/min
power factor, co5
Under rated voltage, the guaranteed value of the ratio of the motor's stall torque to the rated torque shall comply with the provisions of Table 14. 0. 69
JB/T6449-1992
speed.r/min
Staple torque/rated torque
Under rated voltage, the guaranteed value of the ratio of the motor's maximum torque to the rated torque is equal to the guaranteed value of the ratio of the stall torque to the rated torque. Under rated voltage, the guaranteed value of the minimum torque during motor starting is 0.5 times the guaranteed value of the stall torque. Under rated voltage, the guaranteed value of the ratio of the motor's stall current to the rated current shall comply with the provisions of Table 15. Table 15
80~160
180200
225~280
Speed, r/min
Locked rotor current/rated current
Note: When calculating the ratio of locked rotor current to rated current, the rated current value used should be obtained according to the guaranteed values ​​of rated power, rated voltage, efficiency and power factor.
The tolerance of the guaranteed value of the electrical performance of the motor at the rated duty cycle should comply with the provisions of Table 16.3 The parallelism tolerance of the motor axis to the foot support surface shall comply with the provisions of Table 8. Table 8
Frame size
80~250www.bzxz.net
The dimensions and tolerances of the motor shaft extension key shall comply with the provisions of Table 9. Table 9
Shaft extension diameter
Basic size
Limit deviation
Railway tolerance
Basic size
YH225280
Limit end benefit
Overall dimensions
ACADHF
380285500
120131515501850
475345610
515385650
580410720
Limit deviation
JB/T 64491992
The flatness tolerance of the motor foot supporting surface shall conform to the provisions of Table 7. Table 7
132~200
225~280
The parallelism tolerance of the motor axis to the foot support surface shall comply with the provisions of Table 8. Table 8
The dimensions and tolerances of the motor shaft extension key shall comply with the provisions of Table 9. Table 9
Shaft extension diameter
Basic size
Limit deviation
Basic size
The symmetry tolerance of the keyway on the motor shaft extension shall comply with the provisions of Table 10. Table 10
Symmetry tolerance
The radial runout tolerance at half the length of the motor shaft extension shall comply with the provisions of Table 11. Table 11
Shaft straightness
Circular runout tolerance
>30~50
Limit deviation
>50~80
3.8.7 The radial circular runout tolerance of the outer circle of the motor flange stop to the motor axis and the end circular runout tolerance of the flange matching surface to the motor axis shall comply with the provisions of Table 12.
Flange stop diameter
Circular runout tolerance
4 Technical requirements
130~230
>230350
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
JB/T6449-1992
4.2 The motor shall be able to operate at rated speed under the following conditions of altitude, ambient air temperature and relative condensation of ambient air. 4.2.1 The altitude shall not exceed 1000m.
4.2.2 The maximum ambient air temperature varies with the seasons, but shall not exceed 40℃. Note: If the motor is specified to be used at an altitude of more than 1000m or the ambient air temperature is higher or lower than 40℃, the provisions of GB755 shall apply. 4.2.3 The minimum ambient air temperature is -15℃. 4.2.4 The average maximum relative humidity in the most chaotic month is 90%, and the average minimum temperature in the month is not higher than 25℃. 4.3 The deviation of the power supply voltage and frequency from the rated value during the operation of the motor shall comply with the provisions of GB755. 4.4 When the power, voltage, frequency and duty cycle of the motor are rated, the guaranteed values ​​of its slip rate, efficiency and power factor shall comply with the provisions of Table 13; when it is operated according to other three conditions and duty cycle or continuous duty system S1, its slip rate, efficiency and power factor may be different from the provisions of Table 13.
Note: The efficiency is determined by the loss analysis method of the measured stray loss. 4.5
speed t/min
power factor, co5
Under rated voltage, the guaranteed value of the ratio of the motor's stall torque to the rated torque shall comply with the provisions of Table 14. 0. 69
JB/T6449-1992
speed.r/min
Staple torque/rated torque
Under rated voltage, the guaranteed value of the ratio of the motor's maximum torque to the rated torque is equal to the guaranteed value of the ratio of the stall torque to the rated torque. Under rated voltage, the guaranteed value of the minimum torque during motor starting is 0.5 times the guaranteed value of the stall torque. Under rated voltage, the guaranteed value of the ratio of the motor's stall current to the rated current shall comply with the provisions of Table 15. Table 15
80~160
180200
225~280
Speed, r/min
Locked rotor current/rated current
Note: When calculating the ratio of locked rotor current to rated current, the rated current value used should be obtained according to the guaranteed values ​​of rated power, rated voltage, efficiency and power factor.
The tolerance of the guaranteed value of the electrical performance of the motor at the rated duty cycle should comply with the provisions of Table 16.
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