JB/T 5338-1991 Technical requirements for YB series flameproof (dII CT4) three-phase asynchronous motors (frame size 80 to 315)
Some standard content:
Mechanical Industry Standard of the People's Republic of China
Technical Conditions for YB Series Flameproof (dIICT4) Three-Phase Asynchronous Motors (Frame No. 80315)
1 Subject Content and Scope of Application
JB5338
This standard specifies the type, basic parameters and dimensions, technical requirements, test methods and inspection rules, and marking and packaging requirements of YB series flameproof (dIICT4) three-phase asynchronous motors. This standard applies to YB series flameproof (dIICT4) three-phase asynchronous motors (frame No. 80-315) (hereinafter referred to as motors). All series of motors derived from this series of motors can also be implemented as a reference. The explosion-proof performance of this series of motors complies with the provisions of GB3836.2 and is made into a flameproof type. The explosion-proof mark is dIICT4, and it is suitable for factories with dIIC level and temperature groups of T1T4 where explosive mixtures of flammable gases or vapors and air are formed. 2
Referenced standards
GB1993
GB1032
GB10069.1
GB10069.3
GB10068.1
GB10068.2
JB/Z346
JB/Z294
GB2900.25
GB2900.35||t t||Explosion-proof electrical equipment for explosive atmospheres
Explosion-proof electrical equipment for explosive atmospheres
Motor housing protection classification
Motor cooling method
Motor structure and installation type code
Motor size and tolerance
Basic technical requirements for rotating motors
General requirements
Flameproof electrical equipment "d"
Basic environmental test procedures for electrical and electronic products Stepper motor test methods
Determination methods and limits of noise for rotating electrical machines
Determination methods and limits of noise for rotating electrical machines
Determination methods and limits of vibration for rotating electrical machines
Determination methods and limits of vibration for rotating electrical machines
Test Db: Alternating damp heat test method
Noise engineering determination method
Noise limit
Determination method of vibration
Vibration limit
Test limits for insulation between turns of AC low-voltage motor loose-embedded windingsTest methods for insulation between turns of AC low-voltage motor loose-embedded windingsPackaging, storage and transportation graphic symbols
Electrical terminology
Electrical terminology
Types, basic parameters and dimensions
Explosion-proof electrical equipment for explosive atmospheres
The protection grade of the motor main casing is IP44, and can also be made into IP54, and the junction box is IP54 (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, 3.3
IMV6, IMV15, IMV36 (see GB997), and it is manufactured according to the provisions of Table 1. 3.4
The motor rating is a continuous rating based on the continuous duty system (S1). Approved by the Ministry of Machinery and Electronics Industry on June 28, 1991, and implemented on July 1, 1992
Frame size
80~160
180~225
250~315wwW.bzxz.Net
JB5338-91
Structure and installation type code (IM)
B3, B5, B6, B7, B8, B35, V1, V3, V5, V6, V15, V36B3, B5, B35, V1
B3, B35, V1
3.5, the rated frequency of the motor is 50Hz, and the rated voltage is 220, 380, 660, 220/380, 380/660V. 3.6 The motor shall be manufactured according to the following rated powers: 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, 110, 132, 160, 200kW.
3.7 The correspondence between the motor frame number, speed and power shall be in accordance with the provisions of Table 2. Table 2
Frame number
Note: The numbers 1 and 2 after S, L and M represent different powers under the same frame number and speed, 3.8
Motor size and tolerance
JB533891
The installation size and tolerance of the motor shall comply with the provisions of Tables 3 to 6, and the overall size shall not be greater than the provisions of Tables 3 to 6 (see Figures 1 to 4).
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There are 14 pages left to read. Do you want to continue reading? This document was shared by Rui Xiyang on 2019-03-14. Continue to read the full text for free. Users who have read this document also read these documents GB. Don’t read it anymore, download it directly. GDGE, GE’s usage is for large-scale production. 2. 4. 6. YB80200 YB180~ YB225~311 4. 6, 8. 16 GD-GE.GEEeE 2) P is the maximum limit, and the distance height required for white-green matching is special. JB5338--91 The size and tolerance of the motor shaft extension key shall comply with the provisions of Table 7. 3.8.2
Shaft extension diameter
Micro quality
JB5338--91
The dimensions and tolerances of the motor shaft extension key shall comply with the provisions of Table 7. Table 7
Shaft extension diameter
The radial runout tolerance at half the shaft extension length shall comply with the provisions of Table 8. Table 8
Shaft extension diameter
>30~50
>50~80
Radial 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 9.
Flange stop straightness
130~230
>230~450
>450~680
Radial and end face circular runout tolerance
.The parallelism tolerance of the motor axis to the foot support surface shall comply with the provisions of Table 10. Table 10
Frame size
80~250
>250~315
The flatness tolerance of the motor foot support surface shall comply with the provisions of Table 11. Parallelism tolerance
AB\or BBt)The maximum dimension
>100~160
>160~250
>250~400
>400~630
>630~1000
1) AB is the distance between the outer edges of the base (end view) 2)
BB is the distance between the outer edges of the base (side view) JB'5338-91
Flatness tolerance
The symmetry tolerance of the motor shaft keyway to the center line shall comply with the provisions of Table 12. Table 12
Technical requirements
>10~18
>18~30
Symmetry tolerance
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. The motor shall be able to operate at rated values under the following conditions of altitude, ambient air temperature and ambient air relative humidity. The altitude shall not exceed 1000m.
The ambient air temperature varies with the seasons but shall not exceed 40℃. Note:
If the motor is specified to be used at an altitude exceeding 1000m or the maximum ambient air temperature is higher or lower than 40℃, it shall comply with the provisions of GB755. The minimum ambient air temperature is -15℃.
The average maximum relative humidity of the wettest month is 90%, and the average minimum temperature of the month is not higher than 25℃. 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. 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 13. Table 13
Power factor
Efficiency is determined by the measured stray loss analysis method. JB5338-91
Continued Table 13
Step speed
Power factor
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 Table 14
Stall torque/rated torque
JB: 5338-91
Continued Table-14
Stall torque/rated torque
Under rated voltage, the guaranteed value of the ratio of the minimum torque to the rated torque during the motor starting process shall not be lower than the provisions of Table, 15. Table 15
Minimum torque/rated torque
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