JB/T 10444-2004 Technical requirements for Y2 series high voltage three-phase asynchronous motors (frame size 355 to 560)
Some standard content:
ICS29.160
Machinery Industry Standard of the People's Republic of China
JB/T10444—2004
Specification for Y2 Series High-Voltage Three-phase Induction Motor (Frame Size 355～560)
Motos (Frame numbers 355 to 560)
Issued on February 10, 2004
Implementation on June 1, 2004
Issued by the National Development and Reform Commission of the People's Republic of ChinaForewordbZxz.net
Normative reference documents,
Type, basic parameters and dimensions
Technical requirements.
Inspection rules
Marking, packaging and service life
JB/T10444—2004
JB/T10444—2004
This standard is formulated for new full heat sink type medium-sized high-voltage three-phase asynchronous motors. Its formulation will be conducive to guiding production and strengthening product management, and will also facilitate users' ordering and acceptance. This standard is written in accordance with the general standard format and rules for major categories of products, and complies with GB/T1.1-2000 "Basic provisions for the preparation of standards in the guidelines for standardization work" and GB/T1.2-2002 "Part 2 of the guidelines for standardization work: Methods for determining the content of normative technical elements in standards". This standard is proposed by the China Machinery Industry Federation. This standard is under the jurisdiction of the National Technical Committee for Standardization of Rotating Electrical Machines (SAC/TC26). This standard was drafted by Shanghai Electric Science Research Institute, Shenyang Electric Machine Co., Ltd., Tan Electric Machine Group Co., Ltd., Shanghai Electric Machine Factory Co., Ltd., and Lanzhou Electric Machine Co., Ltd. The main drafters of this standard are: Kang Ping, Zhai Donghui, He Yumin, Shen Jing, and Xiao Junyu. 1
JB/T10444—-2004
Technical conditions for Y2 series high-voltage three-phase asynchronous motors (frame size 355~560) 1 Scope
This standard specifies the types, basic parameters and dimensions, technical requirements, inspection rules, and marking and packaging requirements of Y2 series high-voltage three-phase asynchronous motors.
This standard applies to general-purpose Y2 series high-voltage three-phase asynchronous motors, frame size 355~560 (hereinafter referred to as motors). 2 Normative references
The clauses in the following documents become the clauses of this standard through reference in this standard. For any dated referenced document, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, the parties to an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For any undated referenced document, the latest version shall apply to this standard. GB/T191-2000 Pictorial symbols for packaging, storage and transportation (eqvISO780:1997) GB755-2000 Ratings and performance of rotating electrical machines (idtIEC60034-1:1996) GB/T997 Structure and installation type of rotating electrical machines (IM code) (GB/T997-2003.IEC60034-7:1992, IDT) GB/T1032-1985 Test methods for three-phase asynchronous motors GB/T1993-1993 Cooling methods for rotating electrical machines (eqvIEC60034-6:1991) GB1971-1980 Motor terminal marking and direction of rotation (eqvIEC60034-8:1972) GB/T4772.2-1999 Rotating electrical machines Rotating motor dimensions and output power levels Part 2: Frame size 3551000 and flange number 1180~2360 (idt[EC60072-2:1990GB/4831-1984 Method for compiling motor product models GB/4942.12001 Classification of protection of rotating motor housing (IP code) (idtIEC60034-5:1991) GB10068-2000 Mechanical vibration of motors with a shaft center height of 56mm or more Vibration measurement, evaluation and limits (idtIEC60034-14996)
GB/10069.1-1988 Rotating motor noise measurement method and limit noise engineering measurement method (negISO1680-I:1986) GB(4 711—1993 General safety requirements for small and medium-sized rotating electrical machines (neg[EC60034-1) JB/10098--2000 Impact voltage withstand level of AC motor stator molded coil (idtIEC60034-15:1995) 3 Types, basic parameters and dimensions
3.1 The motor model consists of three parts, series code, specification code and environment code, arranged in sequence (see GB/T4831). Example:
3551—4
Environmental code
Specification code, indicating shaft center height 355mm, core length 1, 4 poles series code, indicating cage rotor asynchronous motor 3.2 The motor housing protection level is 1P54 (see GB/T4942.1). 3.3 Electric The cooling method of the motor is IC411 (see GB/1993). 3.4 The structure and installation type of the motor is IMB3 (see GB/T997). JB/T10444-2004
The rating of the motor is a continuous rating based on the continuous working system (S1). 3.5
The rated frequency of the motor is 50Hz, and the rated voltage is 6000V or 3000V. 3.6
The corresponding relationship between the motor frame number and the speed and power should be in accordance with the provisions of Table 1. Table 1
Synchronous speed t/min
Frame number
Motor size and tolerance:
The installation size and tolerance of the motor should comply with the provisions of Table 2, and the external dimensions should not be greater than those specified in Table 2. a
(H355400)
(11450560)
Installation dimensions and tolerances
Basic limit|Basic limit|Basic limit|Basic|Limit basic
Dimension deviation scale deviation dimension deviation scale
630t1.4d900±1.4d254
±1.79280
210±0.37
1808025
1300.019250
300| ±0.63
JB/T104442004
Overall dimensions
Basic limit Basic limit Basic limit
Dimensional deviationDimensional deviationDimensional deviation
Note: C\ is the C dimension of the motor using sliding bearings. Its value and axial rate moment are agreed upon by the manufacturer and the user.3.8.2 The dimensions and tolerances of the motor shaft extension key shall comply with the provisions of Table 3, Table 3
Shaft extension diameter
The radial runout tolerance at half the motor shaft extension length shall comply with the provisions of Table 4. 28
1250poog
1340220d
93013002310
12802610
103013802900
JB/T104442004
Shaft extension diameter D
3.8.4 The parallelism tolerance of the motor axis to the foot support surface shall comply with the provisions of Table 5. Table 5
Center height H
≤400
>400~560
3.8.5 The flatness tolerance of the motor foot support surface shall comply with the provisions of Table 6. Table 6
The largest dimension of the distance between the outer edge of the foot AB and BB>630~1000
>1000~1600
>1600~2500
Note: See Table 2 for the dimensions of A4B and BB.
3.8.6 The symmetry tolerance of the keyway on the motor shaft extension shall comply with the provisions of Table 7. Table 7
Keyway width (F)
>18~30
>30~50
4 Technical requirements
Radial runout tolerance
Parallelism tolerance of both ends of the shaft
Flatness tolerance
Symmetry tolerance
4.1 The motor shall be able to operate at rated speed under the following altitude, ambient air temperature and relative humidity conditions. 4.1.1 The altitude shall not exceed 1000m.
4.1.2 The maximum ambient air temperature varies with the seasons, but does not exceed +40°C. mm
Note: If the motor is specified to be used at an altitude of more than 1000m, or the maximum ambient air temperature is higher or lower than 40°C, it should be implemented in accordance with the provisions of GB755.
4.1.3 The minimum ambient air temperature is -15℃ for motors with rolling bearings and 0℃ for motors with sliding bearings. 4.1.4 The average maximum relative humidity in the wettest month is 90%, and the average minimum temperature in 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. 4.2
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 8. 4.3
Power kw
Synchronous
Power factor
JB/T10444—2004
Note: Efficiency is determined by indirect method.
When determining the total loss of the motor, the FR loss of the winding should be converted to the value at the reference operating temperature of Class B insulation, and the stray loss should be calculated as 0.5% of the rated input power
At rated voltage, the guaranteed value of the ratio of the motor's stall torque to the rated torque should comply with the provisions of Table 9. Table 9
Frame size
Synchronous speed
Stalled torque/rated torque
The guaranteed value of the minimum torque during the motor starting process should not be less than 0.5 times the guaranteed value of the stall torque. At rated voltage,
At rated voltage, the guaranteed value of the ratio of the motor's maximum torque to the rated torque is 2.0 times. 4.6
JB/T10444—2004
At rated voltage, the guaranteed value of the ratio of the motor's stall current to the rated current should comply with the provisions of Table 10. Table 10
Frame size
Synchronous speed r/min
Locked rotor current/rated current
Note: When calculating the ratio of locked rotor current to rated current, the rated current used should be obtained according to the guaranteed values of rated power, rated voltage, efficiency and power factor (excluding tolerance).
The tolerance of the guaranteed value of the motor electrical performance should comply with the provisions of Table 11. Name
Efficiency()
Power factor (cos)
Tower torque
Minimum torque
Maximum torque
Stalling current
-0.10(1-n)
-(1-cosV6 is at least -0.02
15% of the guaranteed value, +25% (can exceed +25% by agreement) -15% of the guaranteed value
~10% of the guaranteed value
+20% of the guaranteed value
4.9 The motor adopts F-class insulation, and the temperature rise is assessed according to B-class (Note: The motor with the largest power in each frame size and each pole number in Table 1 is allowed to be assessed according to F-class). When the altitude and ambient air temperature meet the requirements of 4.1 The temperature rise limit of the motor stator winding (resistance method) should not exceed 80K (105K for Class F), and the allowable temperature of the bearing (thermometer method or embedded thermometer method) should not exceed 95°C for rolling bearings and 80°C for sliding bearings (when the oil outlet temperature is not higher than 65°C) or as agreed. 4.10 The motor should be able to withstand an over-torque exceeding 60% of the rated torque for 15s in a hot state and with gradually increasing torque without a sudden change in speed or stalling. At this time, the voltage and frequency are maintained at the rated value. 4.11 The motor should be able to withstand an increase in speed to 120% of its rated value for 2 minutes under no-load conditions without harmful deformation. 4.12 The insulation resistance of the motor stator winding in a hot state or after a thermal test should not be lower than the value of ( 1) Calculated value: R=
Wherein:
R—winding insulation resistance, unit is MQ:
U-winding rated voltage, unit is V:
Rated power, unit is kW.
.-(1)
4.13 The stator winding of the motor should be able to withstand a withstand voltage test lasting 1 minute without breakdown. The frequency of the test voltage is 50Hz and it should be a sine wave as much as possible. The effective value of the voltage is twice the rated voltage plus 1000V. The same motor should not be tested repeatedly. If the user requests, it is allowed to conduct an additional test after installation and before the start of operation. The test voltage should not exceed 80% of the above provisions. If necessary, the motor should be Dry in a dryer. 6
JB/10444-2004
4.14 The stator winding of the motor shall be able to withstand the ground and turn-to-turn impulse voltage test without breakdown. When conducting the impulse voltage test, the peak value of the coil test impulse voltage and the test method shall comply with the provisions of JB/T10098. 4.15 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 three-phase average value shall not exceed 10% of the average value. 4.16 When the motor is unloaded, the effective value of the vibration velocity measured in the free suspension state (see GB10068) shall not exceed 3.5mm/s (or when the motor is rigidly installed and the center height of the motor is greater than 400mm, the effective value of the vibration velocity measured shall not exceed 2.8mm/s). 4.17 The noise value of the A-weighted sound power level measured when the motor is unloaded shall not exceed the provisions of Table 12. Table 12
Rated power
>100~220
>220~550
>550~1100
>1100~2200
4.18 The motor has a cylindrical shaft extension and is driven by a coupling. Note: When other transmission methods are used, the agreement should indicate 113
Synchronous speed r/min
4.19 The motor shaft extension is not allowed to bear external axial force and radial force other than the weight of the coupling. For motors using sliding bearings, when connected to the driven machine with a flexible coupling, unless otherwise specified, the flexible coupling should have an axial limit device, and the allowable axial motion should be in accordance with the agreement.
4.20 When the alphabetical sequence of the terminal is the same as the voltage phase sequence of the three-phase power supply, the motor should rotate clockwise when viewed from the shaft end (see GB1971--1980)
4.21 The motor should be able to start directly when the following conditions (4.21.1~4.21.3) are met, and the number of starts should comply with any of the methods described in 4.21.4~4.21.5. If the following conditions are not met, the rated parameters and special starting conditions of the motor should be determined according to the agreement. 4.21.1 During the starting process, the terminal voltage of the motor should not be less than 85% of the rated voltage. 4.21.2 When the load is a fan or pump, the resistance torque at the rated speed should not be greater than 35% of the rated torque. 4.21.3 The load inertia allowed to be dragged by the motor should be in accordance with the manufacturer's regulations. 4.21.4 When the initial temperature of the motor is the ambient temperature, it is allowed to start twice in succession, and it should stop naturally between the two starts. 4.21.5 When the initial temperature of the motor is the operating temperature of the rated load, it is allowed to start once. 4.22 The motor is not allowed to reverse or brake by reverse power supply during operation. The motor with synchronous speed of 3000r/min is not allowed to reverse after stopping. Whether the motor with synchronous speed below 3000r/min is allowed to reverse after stopping is determined by the manufacturer. 4.23 The motor should be made into three outlet terminals, and the wiring mark diagram should be set at the same time. From the shaft extension end, the motor terminal box is located at the top or right side of the base, otherwise it is in accordance with the agreement.
4.24 The motor can be equipped with a heater. The heater should make the air temperature inside the casing higher than the ambient temperature, and consider that the heating temperature of the heater should not damage the insulation of itself and any adjacent parts. The heater should be able to work continuously during the stop of the motor. 4.25 The motor should be equipped with a grounding terminal on the terminal box and the base, and marked with the symbol or graphic mark specified in GB14711. The design of the grounding terminal should ensure good connection and sufficient contact area with the grounding wire. 4.26 All markings on the motor should be clear and durable, and should not be easily erased or fallen off during the service life. 5 Inspection rules
5.1 Each motor must be inspected and qualified before it can leave the factory, and a product certificate should be attached. 5.2 Each motor must be inspected and tested, and the inspection and test items include: a) Mechanical inspection:
JB/T10444-2004
Measurement of the insulation resistance of the stator winding to the casing and between the windings (the cold insulation resistance can be measured during the inspection, but the insulation resistance in the hot state should be guaranteed not to be lower than the provisions of 4.12): Measurement of the DC resistance of the stator winding in the actual cold state; d)
Withstand voltage test:
Withstand impulse voltage test (random sampling test of a single coil): Determination of no-load current and loss:
Note: The no-load characteristic curve needs to be measured during the type test. Determination of stall current and loss:
Note: The stall characteristic curve needs to be measured during type test. Determination of vibration (according to the provisions of 4.16 of this standard): h)
Overspeed test (for cast aluminum rotor motors, only carried out during type test). 5.3 Whenever any of the following situations occur, the motor must be subjected to type testing: a) When the manufacturer conducts the first trial production or small batch production after identification and finalization; when the design or process changes are sufficient to cause changes in certain characteristics and parameters; b)
When there is an unacceptable deviation between the inspection test results and the previous type test results; c)
d) Regular sampling of mass-produced motors, at least once every two years. 5.4 The type test items of the motor include: a) All items of the inspection test:
b) Thermal test:
c) Determination of efficiency, power factor and slip rate; short-time over-torque test:
Determination of maximum torque:
Determination of minimum torque during starting (only carried out during the identification of new products): f
Determination of noise (according to the provisions of 4.17 of this standard): g)
5.5 The mechanical inspection items of the motor include: a) Rotation inspection: When the motor rotates, it should be smooth and light, without stagnation. b) Appearance inspection: Check whether the motor is assembled correctly and completely. The paint on the motor surface should be dry, uniform, and free of stains, damage, cracks, etc.
Installation dimensions, external dimensions and key dimensions inspection: The installation dimensions and external dimensions should comply with the provisions of 3.8.1 of this standard, and the shaft extension c)
The key dimensions should comply with the provisions of 3.8.2
5.6 The various tests specified in 5.2 (except e) and h) and 5.4 (except g) of this standard shall be carried out in accordance with GB/T1032. 5.2 e) can be carried out in accordance with JB/T10098 for a single coil, 5.2 h) in accordance with GB10068, 5.4 g) in accordance with GB/T10069.1, and 5.5 c) The inspection of installation dimensions and tolerances shall be carried out in accordance with GB/T4772.2. 5.7 The test of the motor enclosure protection grade can be carried out when the product structure is finalized or when there are major changes in the structure and process. The test method for the enclosure protection grade shall be carried out in accordance with GB/T4942.1. 6 Marking, packaging and service life
6.1 The nameplate and its data shall ensure that they are not easy to fall off or wear out during the service life of the motor. 6.2 The nameplate shall be fixed in a conspicuous position on the motor base and shall indicate the following items: a) Manufacturer name:
b) Motor name:
c) Motor model:
d) Enclosure protection grade (separate nameplate is allowed): 8
Rated frequency:
Rated power:
g) Rated current:
h) Rated voltage:
Rated speed:
Rated power factor:
Insulation grade or temperature rise limit:
Wiring method:
m) Rated type:
n) Cooling method;
o) Year and month of production and production number of the manufacturer:P) Weight;
q) Standard number,
6.3 Moisture-proof heaters should have corresponding wiring marks and a separate nameplate, indicating the following items:a) Rated voltage:
b) Number of phases:
c) Rated power.
JB/T104442004
6.4 Each outlet terminal of the motor winding and the wiring position in the junction box should have corresponding marks, and the marks shall be in accordance with the provisions of Table 13. Table 13
Name of stator winding
First phase
Second phase
Third phase
Outlet terminal mark
6.5 The shaft extension key of the motor shall be tied to the shaft extension, and the shaft extension and the flat key surface shall be rust-proof and protected. 6.6 The motor's operating and maintenance instructions, electrical data, appearance drawings and product certificates shall be provided to users along with each motor. 6.7 The packaging of the motor shall be able to ensure that under normal storage and transportation conditions, it will not be damp or damaged due to poor packaging within one year from the date of shipment.
The words and signs on the outer wall of the packing box should be clear and neat, and the contents are as follows: 6.8
a) Name of the shipping station and manufacturer:
b) Name of the receiving station and receiving unit;
c) Motor model and product number:
d) Net weight of the motor and gross weight of the box:e) Box size:
The words "Handle with care" and "Avoid rain" should be marked in appropriate positions outside the box, and the graphics should comply with the provisions of GB/191. 6.9 If the user uses and stores the motor correctly according to the provisions of the instruction manual, the manufacturer shall ensure that the motor can operate well within one year of use, but not more than two years from the date of shipment from the manufacturer. If the motor is damaged or cannot operate normally due to poor manufacturing quality within this specified period, the manufacturer shall repair or replace parts or motors for the user free of charge.8
a) Name of the shipping station and manufacturer:
b) Name of the receiving station and receiving unit;
c) Motor model and product number:
d) Net weight of the motor and gross weight of the box:e) Box size:
The words "Handle with care" and "Avoid rain" should be marked in appropriate positions outside the box, and the graphics should comply with the provisions of GB/191. 6.9 If the user uses and stores the motor correctly in accordance with the provisions of the instruction manual, the manufacturer shall ensure that the motor can operate well within one year of use, but not more than two years from the date of shipment from the manufacturer. If the motor is damaged or cannot operate normally due to poor manufacturing quality within this specified time, the manufacturer shall repair or replace parts or motors for the user free of charge.8
a) Name of the shipping station and manufacturer:
b) Name of the receiving station and receiving unit;
c) Motor model and product number:
d) Net weight of the motor and gross weight of the box:e) Box size:
The words "Handle with care" and "Avoid rain" should be marked in appropriate positions outside the box, and the graphics should comply with the provisions of GB/191. 6.9 If the user uses and stores the motor correctly in accordance with the provisions of the instruction manual, the manufacturer shall ensure that the motor can operate well within one year of use, but not more than two years from the date of shipment from the manufacturer. If the motor is damaged or cannot operate normally due to poor manufacturing quality within this specified time, the manufacturer shall repair or replace parts or motors for the user free of charge.
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