JB/T 5870-1991 Technical requirements for YZR series medium-sized high-voltage wound rotor three-phase asynchronous motors for hoisting and metallurgy
Some standard content:
Mechanical Industry Standard of the People's Republic of China
Technical Conditions for Medium-sized
High-voltage Wound-Rotor Three-Phase Asynchronous Motors for Hoisting and Metallurgy 1 Subject Content and Scope of Application
JB5870—1991
This standard specifies the form, basic parameters and dimensions, technical requirements, inspection rules, marking and packaging requirements of medium-sized high-voltage wound-rotor three-phase asynchronous motors for hoisting and metallurgy of YZR series. This standard is applicable to wound-rotor three-phase asynchronous motors (hereinafter referred to as motors) for electric transmission of various hoisting machinery and metallurgical auxiliary equipment, and all kinds of motors derived from this series of motors can be referred to for implementation. 2 Reference standards
GB1993
GB1096
GB10069
GB10068
GB1032
Basic technical requirements for rotating electrical machines
Motor housing protection classification
Motor cooling method
Motor structure and installation type code
Motor dimensions and tolerances Motors with frame sizes 355-1000 Cylindrical motor shaft extension
Ordinary flat 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
Pictorial symbols for packaging, storage and transportation
ZBK26008
Technical conditions for YZR series wound-rotor three-phase asynchronous motors for lifting and metallurgy. JB/Z293
AC high voltage motor stator winding turn insulation test specification. 3 Type, basic parameters and dimensions
3.1 Motor housing protection level: IP44 for lifting environment, IP54 for metallurgical environment. 3.2 Motor cooling method is IC61
3.3 Motor structure and installation type is IM10023.4 The motor duty system is divided into six types: S2, S3, S4, S5, S6 and S7. The standard duty system is S3-60% (that is, the duty system is S3, the standard load duration is 60%, and each working cycle is 10min). The user should specify the required duty system type as accurately as possible; if the user does not specify, the motor will be shipped according to the standard duty system. 3.5 When the motor is in the standard duty system, the rated power should be manufactured according to the following powers: 300, 375, 400, 475, 560kW, and the power in the non-standard duty system shall be given by the manufacturer separately. 3.6 The rated frequency of the motor is 50Hz, and the rated voltage is 3000V or 6000V. Other rated frequencies and voltages shall be negotiated between the user and the manufacturer. 3.7 The corresponding relationship between the rated power, moment of inertia (jm), rotor winding open circuit voltage and frame number of the motor in the standard working system shall comply with the provisions of Table 1.
Approved by the Ministry of Machinery and Electronics Industry on October 24, 1991, and implemented on October 1, 1992
JB 5870-1991
Rotor winding open circuit voltage
3.7.1 The rated power in non-standard working system shall be determined according to the actual temperature rise value of the rated power in the standard working system, and shall be given by the manufacturer in the product sample. However, the rated power in S6 working system shall be given by the manufacturer after the user provides the required working system parameters. 3.7.2 The tolerance of the rotor winding open circuit voltage is ±10%. 3.7.3 The tolerance of the moment of inertia is +10%.
3.8 Dimensions and tolerances of motors.
3.8.1 The installation dimensions and tolerances of motors shall comply with the provisions of Figure 1 and Table 2, and the overall dimensions shall not be greater than those specified in Table 2 (see Figure 1). 11
JB5870-1991
590千
JB5870-1991
3.8.2 The dimensions and tolerances of motor shaft chains shall comply with the provisions of Table 3. Table 3
Shaft extension diameter
Basic dimensions
Limit deviation
3.8.3 The symmetry tolerance of the motor shaft extension keyway is 0.06nim. 4
Technical requirements
Basic dimensions
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 motor shall be able to operate at rated speed when used under the following conditions. High
Limit Deviation
4.2.1 The altitude shall not exceed 1000m. If the motor is specified to be used at an altitude exceeding 1000m, it shall be handled in accordance with the provisions of GB755. mm
4.2.2 The maximum ambient air temperature varies with the seasons. The lifting environment shall not exceed 40℃ and the metallurgical environment shall not exceed 60℃; the minimum ambient air temperature shall be -15℃. If the motor is specified to be used in an ambient air temperature higher or lower than the above provisions, it shall be handled in accordance with the provisions of GB755. 4.2.3 The average maximum relative humidity in the wettest month shall be 90%, and the average minimum temperature in that month shall not be higher than 25℃. 4.2.4 Indoor use
4.2.5 Frequent starting, braking (electrical or mechanical) and reversal according to the provisions of different working systems. 4.2.6 Frequent mechanical vibration and impact.
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 motor is started, the rotor must be connected in series with an additional resistor or reactance to limit the average value of the starting current to no more than 2 times the rated current of each working system.
4.5 The motor adopts a coupling or spur gear transmission. If a spur gear transmission is adopted, the pitch circle diameter of the gear shall not be less than 2 times the shaft extension diameter. 4.6 The guaranteed value of the ratio of the maximum torque to the rated torque of the motor at the rated voltage and the reference working system is 2.8 times. 4.7
The tolerance of the maximum torque multiple is 10% of the guaranteed value. 4.8 The insulation grade of the motor: F for hoisting and H for metallurgy. When the altitude and ambient air temperature meet the requirements of Articles 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 requirements of Table 4. Table 4
Heating parts of motor
Collector ring
F-class insulation
Allowable temperature and temperature rise
H-class insulation
115℃
Electric limit method
Thermometer method
Thermometer method
Note: The allowable bearing temperature refers to the value at the ambient air temperature specified in Article 4.2. When measured at an ambient air temperature lower than the specified ambient air temperature, the bearing temperature should be the difference between the measured temperature plus the specified ambient air humidity and the actual ambient temperature. 4.9 When the three-phase power supply is balanced, the deviation of any phase of the three-phase no-load current of the motor from the average value of the blue phase should not be greater than 10% of the three-phase average value.
JB5870—1991
4.10·The insulation resistance of the motor winding should not be lower than the value obtained by the following formula in the hot state. R,
Where: R, stator winding insulation resistance, MQ; R, rotor winding insulation resistance, Ma;
U—stator rated voltage, V;
U, rotor winding open circuit voltage, V;
P—motor rated power, kW. Www.bzxZ.net
4.11 The motor windings should be able to withstand the insulation withstand voltage test for 1 minute to ground without breakdown. The test voltage frequency is 50Hz and should be a sinusoidal AC voltage as much as possible. Voltage effective value: 1000V+2U for stator and 1000V+4U for rotor. 4.12 The stator windings of the motor should be able to withstand the inter-turn withstand voltage test or short-time rise voltage test without breakdown. When conducting the inter-turn withstand voltage test, the coil test impulse voltage peak value and test method shall comply with the provisions of JB/Z293; the short-time rise voltage test shall be carried out when the motor is unloaded, the external applied voltage is 130% of the rated voltage, and the time is 3 minutes. When the voltage is increased to 130% of the rated voltage, the frequency can be increased at the same time.
4.13 The motor should be able to withstand the maximum torque specified in Article 4.6 (allowing tolerance) for 15 seconds without sudden change in speed, stalling and harmful deformation when the motor is hot and gradually increasing the torque. At this time, the voltage and frequency should be maintained at the rated value. 4.14 The maximum speed allowed by the motor is 2.5 times its synchronous speed. When the motor is unloaded, it should be able to withstand an overspeed test of 1.2 times the maximum speed for 2 mis. The rotor should not be harmfully deformed and can meet the requirements of the withstand voltage test in Article 4.11. It is qualified. 4:15
The unevenness of the motor air gap is not greater than that specified in Table 5. Table 5
Note: In the table, — represents the basic size of the air gap. 1,15
—represents the uneven value of the air gap, which is defined as: equal to 8+8+8-818-,8-88. Among them, 18 and 86 are the air gap values measured at a distance of 120.
4.16 The motor is installed with brushes, and the effective value of the vibration speed measured at no load does not exceed 2.8mm/s. 4.17 The noise value of the A-weighted sound power level measured when the motor is unloaded should not exceed 102dB(A), but 560kW should not exceed 105dB(A).
The stator and rotor terminal boxes of the motor are located on the side of the base, on the right side of the motor when viewed from the main shaft extension end. It can be on the left or both sides according to user needs. 4.18
The motor should be equipped with an overheat protection device.
The motor terminal box should be equipped with a grounding terminal, and an external grounding terminal should be set on the base. There should be a permanent 4.20
grounding mark near the grounding terminal.
4.21 Each fastening screw of the motor must be equipped with an anti-loosening device. 4.22 The shaft extension flat key of the motor, the operating and maintenance instructions (at least one copy is provided for a batch of motors of the same model for the same user) and the product certificate should be provided to the user together with the motor. Each motor is randomly provided with 24 spare brushes. 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:
JB5870—1991
Each motor must pass the inspection before it can leave the factory, and a product certificate shall be attached. 5.2 Each motor shall be inspected and tested, and the inspection and test items include: 5.2.1 Mechanical inspection
Rotation inspection: When the motor rotates, it should be smooth and light, without stagnation and harmful noise. b.
Appearance inspection: Check whether the motor is assembled completely and correctly, the surface paint should be completely dry, and there should be no defects such as red, contamination, magnetic damage, cracks, etc.
Installation size, external size and key size inspection (including shaft extension keyway symmetry). c.
Brush contact inspection: The brush and the collector ring should be in good contact and the brush should move freely. Determination of insulation resistance between winding and ground and between windings. 5.2.3
Determination of DC resistance of winding in actual cold state. 5.2.4 Determination of open circuit voltage of rotor winding.
Stator winding voltage test or short-time voltage rise test. Determination of no-load current and loss.
5.2.7 Withstand voltage test between phases of winding and between phases of winding and ground. When the motor has only three leads, the withstand voltage test between phases of winding is allowed to be carried out on semi-finished products.
5.2.8 Determination of noise.
5.2.9 Determination of vibration.
5.3 C in 5.2.1 of this standard and 5.2.8 and 5.2.9 can be spot-checked, and the manufacturer shall carry out according to relevant regulations. 5.4 Type tests must be conducted in any of the following situations. a.
When the manufacturer conducts the first test or small batch production: when the design or process changes are sufficient to cause changes in certain performance and parameters. When the inspection test results deviate unacceptably from the previous type test results. c
Batch-produced motors shall be regularly sampled, and the sampling time shall be once every two years. 5.5 Type test items of motors include: 5.5.1 All items of inspection test.
5.5.2 Determination of efficiency and power factor.
5.5.3 Temperature rise test: The motor shall be subjected to temperature rise test at the power of S3-60% of the reference working system. The temperature rise of power in non-reference working system (which can be calculated by calculation method) shall be carried out in accordance with the provisions of ZBK26008. 5.5.4 Overspeed test
5.5.5 Short-time overtorque test.
5.5.6 Maximum torque measurement
Torque-slip curve measurement
Measurement of no-load characteristic curve
Determination of rotational feed.
5.5.10 Shell protection performance test.
5.5.11 Air gland unevenness inspection.
5.6 Articles 5.5.9 to 5.5.11 of this standard can be carried out when the motor is finalized or the structure and process have major changes. 5.7 Articles 5.2.2 to 5.2.7 and 5.5.2 to 5.5.9 of this standard shall be carried out in accordance with GB1032; Article 5.2.8 shall be carried out in accordance with GB10069; 5.2.9 shall be carried out in accordance with GB10068; Item C in Article 5.2.1 shall be carried out in accordance with Article 3.8; Article 5.5.10 shall be carried out in accordance with GB4942.1. Marking and packaging
JB5870—1991
The nameplate material and the engraving method of the data on the nameplate should ensure that the handwriting is not easily erased during the entire service life of the motor. From the fan end, the nameplate should be fixed on the upper right half of the motor base and should indicate the following items: a.
Manufacturer name;
Motor name (medium-sized high-voltage wound rotor three-phase asynchronous motor for lifting and metallurgy). Motor model:
Rated frequency;
Rated power;
Rated voltage;
Rated current;
Open-circuit voltage of rotor winding:
Rotor current;
Rated speed;
Duty system;
Wiring method;
Insulation level;
Ambient air temperature;
Moment of inertia;
Protection level;
Noise limit;
Standard number;
Manufacturer product number;
Production license number;
Year and month of production.
The shaft extension key of the motor must be tied to the shaft, and the shaft extension and key surface must be rust-proof and protected. The packaging of the motor must be able to avoid moisture and damage during normal transportation. The text and logos on the outer wall of the box should be clear and neat, and the contents are as follows: a.
Shipping station and manufacturer name;
Receiving station and receiving unit name;
Motor model and product number:
Net weight of the motor and gross weight of the packaging box: Box size, and marked with words and symbols such as "Do not invert", "Moisture-proof", "Center of gravity" at appropriate locations on the outside of the box, and the graphics should comply with the provisions of GB191.
Additional notes:
This standard was proposed and coordinated 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, Miao Feng, Tan Yulin, and Yang Hailong9. Random inspections can be conducted by the manufacturer in accordance with relevant regulations. 5.4 Type tests must be conducted in any of the following situations. a.
When the manufacturer conducts the first test or small batch production: when the design or process changes are sufficient to cause changes in certain performance and parameters. When the inspection test results differ from the previous form test results in an unacceptable deviation. c
Batch-produced motors are regularly sampled, and the sampling time should be once every two years. 5.5 The form test items of the motor include: 5.5.1 All items of the inspection test.
5.5.2 Determination of efficiency and power factor.
5.5.3 Temperature rise test: The motor is subjected to temperature rise test at the power of S3-60% of the reference working system. The temperature rise of the power in non-reference working system (which can be calculated by calculation method) shall be carried out in accordance with the provisions of ZBK26008. 5.5.4 Overspeed test
5.5.5 Short-time overtorque test.
5.5.6 Maximum torque measurement
Torque-slip curve measurement
Measurement of no-load characteristic curve
Determination of rotational feed.
5.5.10 Shell protection performance test.
5.5.11 Air gland unevenness inspection.
5.6 Articles 5.5.9 to 5.5.11 of this standard can be carried out when the motor is finalized or the structure and process have major changes. 5.7 Articles 5.2.2 to 5.2.7 and 5.5.2 to 5.5.9 of this standard shall be carried out in accordance with GB1032; Article 5.2.8 shall be carried out in accordance with GB10069; 5.2.9 shall be carried out in accordance with GB10068; Item C in Article 5.2.1 shall be carried out in accordance with Article 3.8; Article 5.5.10 shall be carried out in accordance with GB4942.1. Marking and packaging
JB5870—1991
The nameplate material and the engraving method of the data on the nameplate should ensure that the handwriting is not easily erased during the entire service life of the motor. From the fan end, the nameplate should be fixed on the upper right half of the motor base and should indicate the following items: a.
Manufacturer name;
Motor name (medium-sized high-voltage wound rotor three-phase asynchronous motor for lifting and metallurgy). Motor model:
Rated frequency;
Rated power;
Rated voltage;
Rated current;
Open-circuit voltage of rotor winding:
Rotor current;
Rated speed;
Duty system;
Wiring method;
Insulation level;
Ambient air temperature;
Moment of inertia;
Protection level;
Noise limit;
Standard number;
Manufacturer product number;
Production license number;
Year and month of production.
The shaft extension key of the motor must be tied to the shaft, and the shaft extension and key surface must be rust-proof and protected. The packaging of the motor must be able to avoid moisture and damage during normal transportation. The text and logos on the outer wall of the box should be clear and neat, and the contents are as follows: a.
Shipping station and manufacturer name;
Receiving station and receiving unit name;
Motor model and product number:
Net weight of the motor and gross weight of the packaging box: Box size, and marked with words and symbols such as "Do not invert", "Moisture-proof", "Center of gravity" in appropriate positions on the outside of the box, and its graphics should comply with the provisions of GB191.
Additional notes:
This standard was proposed and coordinated 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, Miao Feng, Tan Yulin, and Yang Hailong9. Random inspections can be conducted by the manufacturer in accordance with relevant regulations. 5.4 Type tests must be conducted in any of the following situations. a.
When the manufacturer conducts the first test or small batch production: when the design or process changes are sufficient to cause changes in certain performance and parameters. When the inspection test results differ from the previous form test results in an unacceptable deviation. c
Batch-produced motors are regularly sampled, and the sampling time should be once every two years. 5.5 The form test items of the motor include: 5.5.1 All items of the inspection test.
5.5.2 Determination of efficiency and power factor.
5.5.3 Temperature rise test: The motor is subjected to temperature rise test at the power of S3-60% of the reference working system. The temperature rise of the power in non-reference working system (which can be calculated by calculation method) shall be carried out in accordance with the provisions of ZBK26008. 5.5.4 Overspeed test
5.5.5 Short-time overtorque test.
5.5.6 Maximum torque measurement
Torque-slip curve measurement
Measurement of no-load characteristic curve
Determination of rotational feed.
5.5.10 Shell protection performance test.
5.5.11 Air gland unevenness inspection.
5.6 Articles 5.5.9 to 5.5.11 of this standard can be carried out when the motor is finalized or the structure and process have major changes. 5.7 Articles 5.2.2 to 5.2.7 and 5.5.2 to 5.5.9 of this standard shall be carried out in accordance with GB1032; Article 5.2.8 shall be carried out in accordance with GB10069; 5.2.9 shall be carried out in accordance with GB10068; Item C in Article 5.2.1 shall be carried out in accordance with Article 3.8; Article 5.5.10 shall be carried out in accordance with GB4942.1. Marking and packaging
JB5870—1991
The nameplate material and the engraving method of the data on the nameplate should ensure that the handwriting is not easily erased during the entire service life of the motor. From the fan end, the nameplate should be fixed on the upper right half of the motor base and should indicate the following items: a.
Manufacturer name;
Motor name (medium-sized high-voltage wound rotor three-phase asynchronous motor for lifting and metallurgy). Motor model:
Rated frequency;
Rated power;
Rated voltage;
Rated current;
Open-circuit voltage of rotor winding:
Rotor current;
Rated speed;
Duty;
Wiring method;
Insulation level;
Ambient air temperature;
Moment of inertia;
Protection level;
Noise limit;
Standard number;
Manufacturer product number;
Production license number;
Year and month of production.
The shaft extension key of the motor must be tied to the shaft, and the shaft extension and key surface must be rust-proof and protected. The packaging of the motor must be able to avoid moisture and damage during normal transportation. The text and logos on the outer wall of the box should be clear and neat, and the contents are as follows: a.
Shipping station and manufacturer name;
Receiving station and receiving unit name;
Motor model and product number:
Net weight of the motor and gross weight of the packaging box: Box size, and marked with words and symbols such as "Do not invert", "Moisture-proof", "Center of gravity" in appropriate positions on the outside of the box, and its graphics should comply with the provisions of GB191.
Additional notes:
This standard was proposed and coordinated 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, Miao Feng, Tan Yulin, and Yang Hailong
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