This standard specifies the type, basic parameters and dimensions, technical requirements, test methods and inspection rules, and marking and packaging requirements of the YASO series of small power increased safety three-phase asynchronous motors. This standard applies to the YASO series of small power increased safety three-phase asynchronous motors (frame size 56~90) (hereinafter referred to as motors), and all series of motors derived from this series of motors can also refer to it. The explosion-proof performance of this series of motors should comply with the provisions of GB3836.3, and they are made into increased safety type, with explosion-proof marks of elT1, elT2 and elT3, which are respectively suitable for places in factories with explosive mixtures of temperature groups T1, T2 and T3, and with slightly corrosive media. JB/T 6200-1992 Technical conditions for YASO series of small power increased safety three-phase asynchronous motors (frame size 56~90) JB/T6200-1992 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of ChinaWww.bzxZ.net
Technical Conditions for YASO Series Low-Power Increased Safety Three-Phase Asynchronous Motors (Frame Size 56-90) 1 Subject Content and Scope of Application
JB6200-1992
This standard specifies the types, basic parameters and dimensions, technical requirements, test methods and inspection rules, and marking and packaging requirements for YASO series low-power increased safety three-phase asynchronous motors. This standard applies to YASO series low-power increased safety three-phase asynchronous motors (frame size 56-90) (hereinafter referred to as motors), and all series of motors derived from this series of motors can also refer to it. The explosion-proof performance of this series of motors shall comply with the provisions of GB3836.3, and they shall be made into increased safety type, with explosion-proof marks of eT1, e1T2 and eIT3, respectively, and are suitable for places in factories with explosive mixtures of temperature groups T1, T2 and T3, and with slightly corrosive media. 2 Reference standards
GB3836.1 General requirements for explosion-proof electrical equipment for explosive atmospheres GB3836.3 Explosion-proof electrical equipment for explosive atmospheres Increased safety electrical equipment*e” GB755
GB5171
Basic technical requirements for rotating electrical machines
General technical conditions for small power motors
Motor housing protection classification
GB1993
Motor cooling method
Motor structure and installation type code
Motor dimensions and tolerances Motors with frame size 36 to 400 and flange number FF55 to FF1080 or FT55 to FT1080 GB10068.1 Vibration determination method and limit value for rotating electrical machines Vibration determination method GB10 32
JB/Z294
Test methods for three-phase asynchronous motors
Test methods for insulation between turns of loosely embedded windings of AC low-voltage motors Packaging, storage and transportation diagrams and symbols
GB2900.35 Electrical terminology Explosion-proof electrical equipment for explosive atmospheres GB2900.27 Electrical terminology Small power motors GB2900.25 Electrical terminology Motors
Basic environmental test procedures for electrical and electronic products Test Db: Alternating damp heat test method JB/2346
Test limits for insulation between turns of loosely embedded windings of AC low-voltage motors GB10069.1 Determination methods and limits for noise of rotating electrical machines Engineering determination methods for noise GB4831
Method for compiling motor product models||t t||3 Type, basic parameters and dimensions
The protection level of the main housing of the motor is IP54, and the protection level of the junction box housing is IP55. 3.1
3.2 Cooling method of the motor: Frame size 56 is IC0041, and the others are IC0141. 3.3 The structure and installation type of the motor are IMB3, IMB14, IMB34, IMB5 (Frame size 56 does not have IMB5. IMB5 can be assigned IMV1 approved by the Ministry of Machinery and Electronics Industry on June 16, 1992 and implemented on January 1, 1993).
JB6200—1992
3.4 ​​The quota of the motor is a continuous quota based on the continuous working system (S1). 3.5 Electric The rated frequency of the machine is 50Hz and the rated voltage is 380V. 3.6 The motor shall be manufactured according to the following rated powers: 60, 90, 120, 180, 250, 370, 550, 750, 1100, 1500, 2200W. The correspondence between the motor frame number and the speed, power and temperature group shall be in accordance with the provisions of Table 1. 3.7
Synchronous rotation
T1, T2, T3
Note: 1 and 2 in the frame number represent different powers under the same frame number, the same speed and temperature group. 3.8 Motor size and tolerance
3.8.1 The installation size and tolerance of the motor shall comply with the provisions of Tables 2 to 5, and the overall size shall not be greater than the provisions of Tables 2 to 5 (see Figures 1 to 4). | |tt |
T&0FDS
920 08
Frame number
Flange number
JB6200—1992
Motor (IMB34) with base having foot, small flange on end cover, and shaft extension at flange end
Position accuracy
62.5±0.50
50±8:8
60±8:8
80±8:83
95± 8.8%
Note: If the position accuracy of K hole is qualified, A/2 can be exempted from assessment. R
24-8:80
3. 0_0.25
3-8:89
7. 2-8.10
15.5-8.10
JB62001992
JB6200—1992
The dimensions and tolerances of the motor shaft extension key shall comply with the provisions of Table 6. Table 6
Shaft extension diameter
The radial runout tolerance at half the shaft extension length shall comply with the provisions of Table 7. Table?
>10~18
>18~30
Flange stop The radial runout tolerance of the motor axis and the end runout tolerance of the flange mating surface to the motor axis shall comply with the provisions of Table 8.
The parallelism tolerance of the motor axis to the center of the foot support is 0.4mm. The flatness tolerance of the motor foot support surface shall comply with the provisions of Table 9. Table 9
The maximum size of AB or BB
>100~160
>160250
Flatness tolerance
Note: AB is the motor The actual distance between the outer edges of the motor base (end view), BB is the actual distance between the outer edges of the motor base 3.8.7
The symmetry tolerance of the keyway on the motor shaft extension shall comply with the provisions of Table 10. Table 10
Technical requirements
Symmetry tolerance
And manufactured in accordance with the drawings and technical documents approved by the prescribed procedures. The motor shall comply with the requirements of this standard,
(side view).
JB6200-1992| |tt||4.2 The motor shall be able to operate at rated value under the following conditions of altitude, ambient air temperature and ambient air relative humidity. 4.2.1 The altitude shall not exceed 1000m.
The maximum ambient air temperature varies with the seasons but shall not exceed 40℃. 4.2.23
Note: If the motor is specified to be used at an altitude exceeding 1000m or the ambient air temperature is higher or lower than 40℃, the provisions of GB755 and GB3836.3 shall be followed.
The minimum ambient air temperature 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 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. 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 11. 4.4
Synchronous speed
T1, T2, T3
At rated voltage, the guaranteed value of the ratio of the motor's stall torque to the rated torque is 2.2 times. Power factor
At rated voltage, the guaranteed value of the ratio of the motor's minimum torque to the rated torque during the motor's starting process shall not be less than 1.4 times. At rated voltage, the guaranteed value of the ratio of the motor's maximum torque to the rated torque shall not be less than the provisions of Table 12. 4.7
Under rated voltage,
JB6200-1992
T1, T2, T3
The guaranteed value of the ratio of the motor's locked-rotor current to the rated current shall not be greater than the specified value in Table 13
Locked-rotor current/rated current
When calculating the ratio of the locked-rotor current to the rated current, the rated current value used shall be obtained according to the guaranteed values ​​of the rated power, rated voltage, efficiency and power factor Note, 1
(excluding tolerance). The tolerance of the guaranteed value of the motor's electrical performance shall comply with the provisions of Table 14. 58
Electrical performance name
Efficiency"
Power factor cos
Stalling torque
Minimum torque
Maximum torque
Stalling current
JB6200—1992
—0.15(1—n)Maximum -0.07
(1-co8) Minimum -0.02 Maximum -0.076
-15% of guaranteed value, +25% (positive tolerance is only specified when required by the user)-15% of guaranteed value
10% of guaranteed value
+20% of guaranteed value
The motor adopts Class B insulation. When the altitude and ambient air temperature meet the requirements of Article 4.2, the temperature rise limits of each part shall meet the following requirements.
The temperature rise limit of the stator winding (resistance method) shall not exceed 80K, and the allowable temperature of the bearing (thermometer method) shall not exceed 95℃. If the altitude and ambient air temperature of the test site in 4.10.1
are different from those in Article 4.2, the temperature rise limit shall be revised according to the provisions of GB755 and GB3836.3.
4.10.2 When the motor is starting, running at rated value or under specified overload (such as at the end of te time), the maximum surface temperature of any part shall not exceed that specified in Table 15.
T1, T2
Maximum surface temperature
4.11 After the motor reaches the final stable temperature rise of rated operation under the maximum ambient temperature, the time for the temperature of each part to rise to the temperature rise limit specified in Table 16 is t time, starting from the time when the starting current passes through the AC winding. The t time should not be less than the time required for the overcurrent protection device to cut off the power supply of the motor when the rotor is blocked. The motor te time should be greater than the minimum t time determined by the starting current ratio I/I in Figure 1. Table 16
Temperature rise limit
Motor part
Stator winding (Class B insulation) (Resistance method) Rotor surface
TI, T2
When the ambient air temperature at the test location is different from that specified in Article 4.2, the temperature rise limit should be revised in accordance with the provisions of GB755 and GB3836.3. Note: Starting current ratio IA/IN: the ratio of starting current IA to rated current IN, where IA refers to the effective value of the stator current measured 5s after power-on when the motor rotor is blocked and the rated voltage and rated frequency are used to feed it. IN is the rated current obtained in accordance with Article 4.8 of this standard. The motor should be able to withstand an accidental overcurrent test of 1.5 times the rated current for not less than 2 minutes. 4.12
3 The motor should be able to withstand the maximum torque value specified in Article 4.7 of this standard (taking into account the tolerance) for 15 seconds without sudden speed change, stalling or harmful deformation in the hot state and gradually increasing the torque. At this time, the voltage and frequency should be maintained at the rated value. The motor should be able to withstand an increase in speed to 120% of the rated value for 2 minutes without harmful deformation under no-load conditions. 4.14
The insulation resistance of the motor stator winding in hot state or after temperature rise test shall not be less than 0.38Mα4.15
The motor stator winding shall be able to withstand a withstand voltage test of 1min without breakdown. The frequency of the test voltage is 50Hz and it shall be a sine wave as much as possible, and the effective value of the voltage is 1940V. 59
JB6200-1992
When inspecting and testing motors produced in large quantities on conveyor belts, the test time is allowed to be shortened to 1s, and the effective value of the voltage is 2340V.
4.17 The stator winding of the motor shall be able to withstand an impulse withstand voltage test without breakdown, and the impulse voltage peak value is 2400V and the wave front time is 0.5μs.
After the stator winding of the motor is tested for 12 cycles according to the 40℃ alternating damp heat test method specified in GB2423.4, the insulation resistance shall not be less than 1.14MQ, and it shall be able to withstand the voltage test specified in Article 4.16 without breakdown, and the effective value of the voltage shall be 1650V. 4.19 The effective value of the vibration velocity measured when the motor is no-load shall not exceed 1.8mm/s. 4.20 The noise value of the A-weighted sound power level measured when the motor is no-load shall not exceed the value specified in the grade selected according to Table 17 when ordering. If there are no special requirements, it shall be manufactured according to Grade 2. S
Relationship diagram of minimum motor te time and starting current ratio I/I 5
Synchronous speed
370~750
15002200
Power level
When the three-phase power supply is balanced, any phase of the motor's three-phase no-load current should not be greater than 10% of the three-phase average value. Level 2
When the motor is inspected and tested, the no-load and stalled current and loss should be within a certain data range. This data range should ensure that the motor performance meets the requirements of Articles 4.4 to 4.9 of the required standards. 4.23
The unevenness of the motor air gap should not be greater than the requirements of Table 18, and the minimum air gap value (single side) should not be less than the requirements of Table 19. Table 1820 The noise value of the A-weighted sound power level measured when the motor is no-load should not exceed the value specified in the grade selected according to Table 17 when ordering. If there are no special requirements, it is manufactured according to Grade 2. S
Relationship between the minimum value of the motor te time and the starting current ratio I/I Graph 5
Synchronous speed
370~750
15002200
Power level
When the three-phase power supply is balanced, any phase of the three-phase no-load current of the motor should not be greater than 10% of the three-phase average value. Grade 2
When the motor is inspected and tested, the no-load and stalled current and loss should be within a certain data range. This data range should ensure that the motor performance meets the requirements of Articles 4.4 to 4.9 of the required standards. 4.23
The unevenness of the motor air gap should not be greater than the requirements of Table 18, and the minimum air gap value (single side) should not be less than the requirements of Table 19. Table 1820 The noise value of the A-weighted sound power level measured when the motor is no-load should not exceed the value specified in the grade selected according to Table 17 when ordering. If there are no special requirements, it is manufactured according to Grade 2. S
Relationship between the minimum value of the motor te time and the starting current ratio I/I Graph 5
Synchronous speed
370~750
15002200
Power level
When the three-phase power supply is balanced, any phase of the three-phase no-load current of the motor should not be greater than 10% of the three-phase average value. Grade 2
When the motor is inspected and tested, the no-load and stalled current and loss should be within a certain data range. This data range should ensure that the motor performance meets the requirements of Articles 4.4 to 4.9 of the required standards. 4.23
The unevenness of the motor air gap should not be greater than the requirements of Table 18, and the minimum air gap value (single side) should not be less than the requirements of Table 19. Table 18
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