JB 5869-1991 Technical Specifications for YBZS Series Flameproof Two-speed Three-phase Asynchronous Motors for Hoisting
Some standard content:
Mechanical Industry Standard of the People's Republic of China
Technical content and scope of application of YBZS series flameproof two-speed three-phase asynchronous motors for hoisting
Subject content and scope of application
JB5869—1991
This standard specifies the type, basic parameters and dimensions, technical requirements, inspection rules, marking and packaging requirements of YBZS series flameproof two-speed three-phase asynchronous motors for hoisting.
This standard is applicable to flameproof two-speed three-phase asynchronous motors (hereinafter referred to as motors) for electric transmission of various hoisting machinery. All series of motors derived from this series of motors can be used as a reference. The explosion-proof performance of this series of motors meets the requirements of GB3836.2, and is made into flameproof type with explosion-proof marks of dI, dIAT4, dIBT4, and dICT4. They are respectively applicable to coal mine equipment and factory IA, IB, IC, and explosive mixtures formed by combustible gas or steam and air with ignition temperature of T1~T4 groups. 2
Cited standards
GB1993
GB1096
GB10069
GB10068
GB1032
GB12665
ZBK26007
JB/Z294
JB/DQ3227
Basic technical requirements for rotating electrical machines
Motor housing protection classification
Motor cooling method
Motor structure installation form and code
Packaging, storage and transportation diagrams
Motor cylindrical shaft extension
Motor conical shaft extension
General Tongping key
Determination method and limit of noise of rotating electrical machines
Determination method and limit of vibration of rotating electrical machines
Test method of three-phase asynchronous motors
Motor dimensions and tolerances Motors with frame sizes of 36 to 400 and flange numbers of FF55 to FF1080 or FT55 to FT1080General requirements for explosion-proof electrical equipment for explosive atmospheresExplosion-proof electrical equipment for explosive atmospheresFlameproof electrical equipment Requirements for damp heat test of "d" motors under normal conditionsTechnical conditions for YZ series three-phase asynchronous motors for lifting and metallurgyTest method for insulation between turns of AC low-voltage motors with scattered windingsMethod for determining the mean time between failures and its probability of three-phase asynchronous motors for metallurgy and lifting. 3 Type, basic parameters and dimensions
3.1 The protection level of the motor housing is IP44, and the terminal box is IP54. 3.2 Cooling method of the motor: Frame sizes 112 and 132 are IC0041; frame sizes 160 to 250 are IC01413.3 The structure and installation type of the motor are IM1001, IM1002, IM1003 and IM1004 and are manufactured according to the provisions of Table 1. Approved by the Ministry of Machinery and Electronics Industry on October 24, 1991 and implemented on October 1, 1992
Structure and installation form
JB.5869—1991
IM1001
IM1003
IM1002
IM1004
Manufacturing range (frame number)
112~160
180~250
112~160
180~250
3.4 The rated power of the motor in the reference working system shall comply with the provisions of Table 2. The power in the non-reference working system shall be given separately by the manufacturer. 3.5 The duty system is divided into four types: S2, S3, S4, and S5. The standard duty system is S3-25% at high speed and S3-15% at low speed (i.e. the duty system is S3, the standard load duration is 25% and 15% respectively, and each duty cycle is 10 minutes). Note: 1) High speed refers to the synchronous speed of 750-1500r/min; 2)
Low speed refers to the synchronous speed of 300-375r/min, the rated frequency of the motor is 50Hz, and the rated voltage is 380V. 3.6
The corresponding relationship between the speed ratio, rated power, moment of inertia (J.) and frame number of the motor in the standard duty system shall comply with the provisions of Table 2. 3.7
1500/375
3.8 The tolerance of the moment of inertia is +10%.
1000/375
750/300
Dimensions and tolerances of electric motors.
The installation dimensions and tolerances of the motor shall comply with the provisions of Figure 1 and Table 3; the overall dimensions shall not be greater than those specified in Table 3 (see Figure 3.9.1
JB58691991
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JB5869—1991
The dimensions and tolerances of the motor shaft extension key shall comply with the provisions of Table 4. Table
Shaft extension diameter
Basic dimensions
Basic, basic dimensions
The radial runout tolerance at half the length of the motor shaft extension shall comply with the provisions of Table 5. Table 5
>30~50
>5G~80
3.9.4 The parallelism tolerance of the motor axis to the base support plane is: 0.50mm. The flatness tolerance of the motor base support plane shall comply with the provisions of Table 6. 3.9.5
Outer edge of the base The maximum dimension of the distance (AB or BB)>160~250wwW.bzxz.Net
>250~400
>400~630
The symmetry tolerance of the keyway of the motor shaft extension shall comply with the provisions of Table 7. Table 7
Technical requirements
Circular runout tolerance
Flatness tolerance
4.1 The motor shall comply with the requirements of this standard and be manufactured in accordance with the drawings and documents approved in the prescribed procedures. 4.2 The motor shall be able to operate at rated speed when used under the following conditions. Tolerance
4.2.1 The altitude shall not exceed 1000m. If used at an altitude exceeding 1000m, the tolerance shall be handled in accordance with the provisions of GB755
4.2.2 The ambient air temperature varies with the seasons, but the maximum shall not exceed 40°C and the minimum shall not be less than -15°C. If the motor is specified to operate at an ambient air temperature higher or lower than the above When used as specified, it should be handled in accordance with the provisions of GB755. 4
JB5869—1991
The average maximum relative humidity of the wettest month is 90%, and the average minimum temperature of the month is not higher than 25℃: indoor use.
Frequent starting, braking (electrical or mechanical) and reversing according to the provisions of different working systems. 4.2.5
Frequent machine vibration and impact.
The motor can be started directly at rated voltage. 4.2.7
4.3 When the motor is at rated voltage, rated frequency and reference working system, the guaranteed value of the ratio of maximum torque and stall torque to rated torque shall comply with the provisions of Table 8.
Maximum torque/rated torque
Stalling torque/rated torque
When the motor is at rated voltage, rated frequency and reference working system, the guaranteed value of the stall current The guaranteed values shall comply with the provisions of Table 9. Table 9
1500/375
105/25
140/40
The tolerance of the guaranteed values of the motor electrical performance shall comply with the provisions of Table 10. Table 10
Stalling torque
Maximum torque
Stalling current
1000/375
Stalling current
12 2/30
178/40
750/300
160/45
220/58
300/80
15% of guaranteed value
-10% of guaranteed value
+15% of guaranteed value
Deviation of power supply voltage and frequency from rated value during motor operation shall comply with the provisions of GB755. 4.6
4.7 The motor adopts coupling or spur gear transmission. When spur gear transmission is adopted, the pitch circle diameter of the gear shall not be less than 2 times of the shaft extension diameter. 4.8 The motor adopts F-class insulation. When the altitude and ambient air temperature meet the provisions of 4.2.1 and 4.2.2, the temperature rise limit and allowable temperature of each heating part of the motor shall not exceed the provisions of Table 11. If the ambient air temperature at the test location and altitude is different from that specified in Articles 4.2.1 and 4.2.2, the temperature rise limit shall be amended in accordance with the provisions of GB755.
Heating parts of motor
Winding ico141
IC0041
Shell surface
JB5869-1991
Allowable temperature and temperature rise
Electric wake-up method
Thermometer method
Thermometer method
The bearing allowable temperature refers to that specified in Article 4.2.2. When measured at an ambient air temperature lower than the specified ambient air temperature, the bearing temperature shall be the measured temperature plus the difference between the specified ambient air temperature and the actual ambient air temperature. When the three-phase power supply is balanced, the deviation of any phase of the motor's three-phase no-load current from the three-phase average value shall not be greater than 4.9 of the three-phase average value. 4.10 The insulation resistance of the motor stator winding shall not be lower than the value obtained by the following formula in the hot state. R
Where:
R--insulation resistance of stator winding, MQ;
P--rated power of the motor, kW;
U--rated voltage of the stator, V.
4.11 The motor stator winding shall be able to withstand an insulation withstand voltage test of 1 min to ground without breakdown. The rated frequency of the test voltage is 50Hz, and it is an AC voltage with a sinusoidal waveform as much as possible. When the motor power is greater than or equal to 1kW, the effective value of the test voltage is 1000V+2U1. When the motor power is less than 1kW, the effective value of the test voltage is 500V+2U1. 4.12 The stator winding of the motor should be able to withstand the intermediate impulse voltage test without breakdown. The impulse voltage peak value and test method shall be carried out in accordance with the provisions of JB/Z294.
4.13 The motor should be able to withstand the maximum torque at high speed specified in Article 4.3 and the tolerance specified in Article 4.5 under the condition of hot state and gradually increasing torque, and the short-term over-torque test lasting 15s without sudden change of speed, stalling and harmful deformation. At this time, the voltage and frequency should maintain the rated value.
The maximum speed allowed by the motor is 2.5 times the synchronous speed at high speed. The motor should be able to withstand an overspeed test of 1.2 times the maximum speed when it is unloaded. The rotor should not be harmfully deformed. 4.15 After the stator winding of the motor is tested for 6 cycles according to the 40C alternating damp heat test method specified in GB12665, the insulation resistance shall not be less than 0.38MQ, and it can withstand the voltage withstand test specified in Article 4.11 without breakdown, but the effective value of the voltage is: 1070V when the motor power is less than or equal to 1kW, and 1500V when it is greater than 1kW. 4.16 The unevenness of the motor air gap shall not exceed the provisions of Table 12. Table 12
The basic size of the air pulse in the table, the uneven value of the air gap, is defined as +, +8, 88, =8, 8, Note:
Among them, 8, 8, 8, are the air ohm values measured at a distance of 120. Motor reliability: Within the reliable life of 2.5 years, the reliability is 0.93. 4.17
The effective value of the vibration velocity measured by the motor when it is no-load shall not exceed the provisions of Table 13. 4.18
Vibration speed
JB5869—1991
112~225
The noise limit of the A-weighted sound power level measured by the motor at high speed and no load shall not exceed the provisions of Table 14. Table 14
The stator terminal box of the motor is located at the top of the base. The wires can be led out along both sides of the motor. There is a grounding screw in the terminal box, and a permanent grounding mark shall be set near the grounding screw. When the temperature of the cable inlet is higher than 1070℃ or the temperature at the branch of the cable core wire is higher than 1080℃ under rated working conditions, a label indicating the temperature shall be set in the terminal box. 4.21 Each fastening bolt on the motor shall have anti-loosening measures. 4.22 The shaft extension key of the motor, the maintenance manual (at least one copy for the same user and the same model of motor) and the product certificate shall be provided to the user together with the motor.
4.23 If the user uses and stores the motor correctly according to the provisions of the operating and maintenance instructions, the manufacturer shall repair or replace parts or motors for the user free of charge if the motor is damaged or cannot work normally due to poor manufacturing quality within one year of use, but no more than two years from the date of shipment from the manufacturer. 5 Inspection rules
The motor shall obtain the "explosion-proof certificate" issued by the explosion-proof inspection unit. 5.1
Each motor shall be inspected and qualified before leaving the factory, and shall be accompanied by a product certificate. 5.2
The motor shall be inspected and tested, and the inspection and test items include. 5.3
Mechanical inspection.
Rotation inspection: When the motor is running, the bearing should be stable and light, without stagnation, and the sound should be uniform and harmonious without harmful noise. Appearance inspection: Check whether the motor is assembled completely and correctly, the surface paint should be completely dry, the color should be uniform and smooth, and there should be no stains, bare red,
magnetic damage, cracks and other defects.
Installation dimensions, external dimensions and key dimensions inspection. Radial runout inspection of shaft extension;
Parallelism of motor axis to foot support plane and flatness of foot support plane inspection. Flatness inspection is allowed to be carried out on parts.
JB58691991
f. Keyway symmetry inspection. Inspection is allowed on parts. Measurement of insulation resistance of winding to ground and between windings. 5.3.2
Measurement of DC resistance of winding in actual cold state. 5.3.3
Measurement of no-load current and no-load loss.
5.3.5 Measurement of locked-rotor current and loss.
Inter-turn insulation impulse withstand voltage test,
Winding phase-to-phase and winding-to-ground withstand voltage test (allowed to be carried out on semi-finished products). 5.3.7
5.3.8 Noise and vibration test.
5.4 Items a and b in 5.3.1 of this standard must be inspected for each unit, while items c, d, e, f and 5.3.8 may be inspected randomly. The inspection method shall be carried out by the manufacturer in accordance with relevant regulations.
5.5 In addition to 5.3, the inspection items of motors and their parts shall also include the inspection items specified in the drawings in accordance with GB3836.2. 5.6 Type tests must be carried out for any of the following situations. 5.6.1 When the manufacturer conducts the first test or produces a small batch. 5.6.2 When the change in design, process or material is sufficient to cause changes in certain characteristics and parameters. 5.6.3 When the inspection test results and the results of the previous type test have an unacceptable deviation. 5.6.4 Electric motors produced in batches shall be regularly inspected, and the inspection time shall be at least once a year. 5.7 The type test items of motors include: 5.7.1 All items specified in 5.3 and 5.4 of this standard. 5.7.2 Determination of efficiency, power factor and slip rate. 5.7.3 Temperature rise test: The motor shall be subjected to temperature rise test according to the power of the reference working system, and the temperature rise test of the non-reference working system shall be carried out at least once every three years (for S4 and S5 working systems, only 150 and 300 tests per hour are required). 5.7.4 Overspeed test.
5.7.5 Short-time overtorque test.
5.7.6 Determination of maximum torque.
5.7.7 Determination of torque-slip curve. 5.7.8 Measure the stall characteristic curve and no-load characteristic curve. 5.7.9 Shell protection performance test.
5.7.10 Air gap unevenness inspection.
Determination of moment of inertia.
2 Alternating damp heat test.
3 Reliability test.
5.8 Articles 5.7.9 to 5.7.12 of Article 5.7 of this standard shall only be carried out when the product is finalized or there are major changes in the relevant structure or process. Article 5.7.13 of Article 5.7 may be carried out when the manufacturer first trial production or small batch production is carried out after the product is finalized. 5.9 In any of the following situations, the drawings and technical documents must be reviewed and explosion-proof performance tests must be carried out in accordance with the provisions of GB3836.2. Products that have not obtained the "explosion-proof certificate". a.
For products that have obtained the "explosion-proof certificate", when the local and material changes involve the relevant provisions of explosion-proof performance, the changed part of the b.
drawings and instructions should be sent to the original inspection unit for re-examination. C., when the inspection unit needs to re-examine the product that has been issued the "explosion-proof certificate". d. When the "explosion-proof certificate" expires.
5.10 The tests of 5.32 to 5.3.5, 5.3.7, 5.7.2 to 5.7.8 and 5.7.11 of this standard shall be carried out in accordance with GB1032; 5.3.6 shall be carried out in accordance with JB/Z294; 5.3.8 shall be carried out in accordance with GB10069 and GB10068 respectively; Items c to f in 5.3.1 shall be carried out in accordance with 3.9; 5.7.9 shall be carried out in accordance with GB4942.1, and 5.7.13 shall be carried out in accordance with JB/DQ3227; the cone shaft extension inspection in Item C of 5.3.1 shall be carried out in accordance with ZBK26007.
6 Marking and packaging
JB5869—1991
6.1 The data on the nameplate and speed indicator plate shall be guaranteed to be indelible during the entire service life of the motor. The shell should have a clear embossed mark "Ex" on it.
6.2 When viewed from the fan end, the nameplate should be fixed on the upper right part of the motor base and the following items should be marked: a.
Manufacturer name;
Motor name (flameproof two-speed three-phase asynchronous motor for hoisting); Motor model;
Explosion-proof mark;
There is an obvious mark \Ex" on the upper right;
Rated power (the power at high and low speeds should be given separately): rated voltage;
Rated current (the rated current at high and low speeds should be given separately): rated power;
Rated speed (the speed at high and low speeds should be given separately); Working system (divided into give the working mode at high and low speed respectively); wiring method (the connection method at high and low speed should be given respectively); insulation level;
protection level;
moment of inertia;
noise limit;
weight;
standard number;
explosion-proof certificate number;
manufacturer product number;
production license number;
year and month of production,
6.3 The motor should be equipped with a speed indicator and indicate the wiring Schematic diagram, terminal markings and speed indicator markings should be consistent. The markings are 1U, 1V, 1W, 2U, 2V, 2W.
6.4 The packaging of the motor should be able to avoid moisture and damage during transportation. 6.5
The text and markings on the outer wall of the packaging box should be clear and neat, and the content is as follows: Shipping station and manufacturer name:
Receiving station and receiving unit name;
Motor model and product number;
Motor net weight and gross weight together with the box;
The size of the packing box shall be marked with words and symbols such as "Do not invert", "Moisture-proof", and "Center of Gravity" at appropriate locations on the outer wall of the box. The diagram e.
·The shape shall comply with the provisions of GB191.
Additional instructions:
This standard was proposed and managed by the Jiamusi Explosion-proof Motor Research Institute of the Ministry of Machinery and Electronics Industry. This standard was drafted by the Jiamusi Explosion-proof Motor Research Institute of the Ministry of Machinery and Electronics Industry. The main drafters of this standard are Wang Xichun, Xu Zhushan, Yang Hailong, Tan Yulin, and Miao Feng.
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