JB/T 10446-2004 Technical requirements for Y series 10kV three-phase asynchronous motors (frame size 450~630)
Some standard content:
ICS29.160.30
Machinery Industry Standard of the People's Republic of China
JB/T10446—2004
Specification for Y Series 1OkV Three Phase Induction Motors(Framenumbers450to630)
Promulgated on February 10, 2004
Implementation on June 1, 2004
Promulgated by the National Development and Reform Commission of the People's Republic of ChinaForeword
Normative referenced documents
3 Types, basic parameters and dimensions
Technical requirements
Inspection rules
Marking, packaging and service life
JB/T10446—2004
This standard is formulated for the first time.
JB/T10446-2004
This standard is written in accordance with the general standard format and rules for major categories of products, and complies with GBT1.1-2000 "Guidelines for Standardization Work Part 1: Structure and Writing Rules for Standards" and GB/T1.2-2002 "Guidelines for Standardization Work Part 2: 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 Electric Machines (SAC/TC26). This standard was drafted by Shanghai Electric Science Research Institute, Xiangtan Electric Machine Co., Ltd., Zibo Traction Electric Machine Group Co., Ltd., Shandong Qilu Electric Machine Manufacturing Co., Ltd., and Lanzhou Electric Machine Co., Ltd. The main drafters of this standard are: Kang Ping, Guo Xiaoling, Lu Changrui, Wang Lianwu, and Cao Wenliang. 1 Scope
Technical conditions for Y series 10kV three-phase asynchronous motors (frame size 450-630)
JB/T.10446--2004
This standard specifies the types, basic parameters and dimensions, technical requirements, inspection rules, and marking and packaging requirements of Y series 10kV three-phase asynchronous motors.
This standard applies to Y series 10kV three-phase asynchronous motors (frame size 450-630) for general use (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 marking 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 (TM code) (GB997-2003, 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 Terminal marking and direction of rotation of electrical machines (eqvIEC60034-8:1972) GB/T4772.2-1999 Dimensions and output of rotating electrical machines Output power level Part 2: Frame size 355~1000 and flange number 11802360 (idtIEC60072-2:1990) GB/T4831—1984 Method for compiling motor product models GB/T4942.[2001 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 - Measurement, evaluation and limits of vibration (idtIEC60034-14:1996)
GB/T10069.1—1988
1680-1:1986)
Methods for measuring noise and limits of rotating motors
GB14711—19 93 General safety requirements for small and medium-sized rotating electrical machines Engineering determination method for noise (negIso
JB/T10098—2000 Impulse withstand voltage level of stator molded coil of AC motor (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:
4501—4
Environmental code
Specification code, indicating shaft center height 450mm, core length 1, 4 poles Series code, indicating cage rotor asynchronous motor 3.2 Motor housing protection grade IP23 or 1P44 (duct ventilation) (see GB/T4942.1): 1
JB/T10446--2004
3.3 The cooling method of the motor is IC01, IC11, IC21, IC31 (see GB/T1993): 3.4 The structure and installation type of the motor is IMB3 (see GB/T997) 3.5 The motor rating is a continuous rating based on the continuous duty system (S1). 3.6 The rated frequency of the motor is 50Hz and the rated voltage is 10000V. The corresponding relationship between the motor frame number and the speed and power should be in accordance with the provisions of Table 1. 3.7
Synchronous speed
Frame number
Motor size and tolerance:
3.8.1 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. The size and tolerance of the motor shaft extension key should comply with the provisions of Table 3. 3.8.2
±1.751120±1.75
Basic dimensions
Installation dimensions and tolerances
, when using sliding bearings. Dimensional deviations do not include axial dynamics. 4 Technical requirements
±0.50|25
Basic dimensions
Basic dimensions
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 shall vary with the seasons but shall not exceed +40℃. K
JB/T10446—2004
Dimensions
130010501550
1420111o1700
16001200
180011300/2050
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 40C, it shall be implemented in accordance with the provisions of GB755.
The minimum ambient air temperature is -15℃ for motors using rolling bearings and 0℃ for motors using sliding bearings. 4.1.3
4.1.4The average maximum relative humidity of the wettest month is 90%, and the average minimum temperature of the month is not higher than +25℃. 4.2 The deviation of the power supply voltage and frequency from the rated value during the operation of the motor shall be in accordance with the provisions of GB755. 4.3 When the motor power, voltage and frequency are rated, the guaranteed values of its efficiency and power factor shall comply with the provisions of Table 4: When the motor adopts sliding bearings, the allowable reduction value of its efficiency shall comply with the provisions of Table 5. 3
JB/T10446-2004Www.bzxZ.net
Shaft extension diameter
Synchronous speed
Power factor
Note: The efficiency is determined by the indirect method. When determining the total loss of the motor, the R loss of the winding should be converted to the value at the reference working temperature of Class B insulation, and the stray loss is calculated as 0.5% of the rated input power. 4
Synchronous speed
Permitted reduction value of efficiency (%)
JB/T10446-2004
At 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 6. Table 6
Stalled-rotor torque/rated torque
At rated voltage, the guaranteed value of the minimum torque during motor starting should not be less than 0.5 times the guaranteed value of the stalled-rotor torque (excluding the capacity 4.5
At rated voltage, the guaranteed value of the ratio of the motor's maximum torque to the rated torque is 1.8 times. Under rated voltage, the guaranteed value of the ratio of the motor's locked-rotor current to the rated current shall comply with the provisions of Table 7. Table 7
Synchronous speed
Locked-rotor current/rated current
Note: When calculating the ratio of the locked-rotor current to the rated current, the rated current used shall be obtained according to the guaranteed values of the rated power, rated voltage, efficiency and power factor (excluding tolerance), and the tolerance of the guaranteed value of the motor's electrical performance shall comply with the provisions of Table 8. 4.8
Efficiency n
Power factor cos
Stalling torque
Minimum torque
Maximum torque
Stalling current
0.10(1-n)
(1-cosΦ)/6Minimum -0.02
-15% of guaranteed value, +25% (can exceed +25% upon agreement)-15% of guaranteed value
-10% of guaranteed value
+20% of guaranteed value
JB/T10446-2004
4.9The motor adopts F-class insulation and the temperature rise is assessed according to B-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) shall not exceed 80K, the allowable temperature of the bearing (thermometer method or embedded thermometer method) shall not exceed 95℃ for rolling bearings, and shall not exceed 80℃ for sliding bearings (when the oil outlet temperature is not higher than 65℃) or as agreed. 4.10 The motor shall 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, and the voltage frequency shall be maintained at the rated value. 4.11 The motor shall be able to withstand an increase in speed to 120% of its rated value for 2 minutes without harmful deformation when it is unloaded. 4.12 The insulation resistance of the motor stator winding in the hot state or after the hot test shall not be less than the value obtained by formula (1): R=
Where:
R—winding insulation resistance, unit is M2:
U-winding rated voltage, unit is V:
Prated power, unit is kW.
4.13 The stator winding of the motor shall be able to withstand a withstand voltage test lasting 1min without breakdown. The frequency of the test voltage is 50Hz and it shall be a sine wave as much as possible. The effective value of the voltage is twice the rated voltage plus 1000V. The same motor shall not be tested repeatedly. If the user requests, an additional test is allowed before the start of operation after installation. The test voltage shall not exceed 80% of the above provisions. If necessary, the motor shall be dried before the test. 4.14 The stator winding of the motor shall be able to withstand the ground and turn-to-turn impulse withstand voltage test without breakdown. When conducting the impulse voltage test, the coil test impulse voltage peak value and 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 under rigid installation, 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 9. Qiu9
Rated power
280~550
>550~1100
>1100~2200
Synchronous speed
4.18 The motor has a cylindrical shaft extension (or manufactured according to the user's requirements) and is driven by a coupling. Note: When other transmission methods are used, it should be noted in the agreement. 103
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 allowed axial drive disk 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. 6
4.21.1 During the starting process, the terminal voltage of the motor should not be less than 85% of the rated voltage. JB/T10446-2004
4.21.2 When the load is a fan or pump, the resistance torque at rated speed shall not be greater than 35% of the rated torque. 4.21 .3 The rotational inertia of the load that the motor is allowed to drag shall comply 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. Between the two starts, it should stop naturally. 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. For motors with a synchronous speed of 3000r/min, it is not allowed to reverse after stopping. For motors with a synchronous speed below 3000r/min, whether it is allowed to reverse after stopping is determined by the manufacturer. 4.23 The motor should be made into three The outlet terminal and wiring mark diagram are set at the same time. When viewed from the shaft extension end, the motor terminal box is located on the right side of the base, otherwise it is in accordance with the agreement.
4.24 The motor should be equipped with a grounding terminal on the terminal box and the base, and marked with the symbols or graphic marks specified in GB14711. The design of the grounding terminal should ensure good connection with the grounding wire and sufficient contact area. 4.25 All marks on the motor should be clear and durable, and not easy to be erased or fall off during the service life. -5 Inspection rules
5.1 Each motor must be inspected and qualified before it can be shipped, and a product certificate should be attached. 5. 2 Each motor must be inspected and tested. The inspection and test items include: a) Mechanical inspection:
Measurement of insulation resistance of stator winding to housing and between windings (cold insulation resistance can be measured during inspection, but the insulation resistance in hot state should be guaranteed not to be lower than the provisions of 4.12 of this standard); measurement of DC resistance of stator winding in actual cold state: c) Withstand voltage test:
Withstand impulse voltage test (random sampling test of single coil): f
Determination of no-load current and loss:
Note: During type test, the no-load characteristic curve is taken from the plate. g) Determination of locked rotor current and consumption:
Note: During type test, the locked rotor characteristic curve is taken from the plate. h) Vibration measurement (according to the provisions of 4.16 of this standard): Overspeed test (for cast aluminum rotor motors, it is only carried out during type test). 5.3 The motor must be type tested if any of the following conditions are met. After the finalization of the identification, the first trial production or small batch production is carried out: a)
When the design or process changes are sufficient to cause changes in certain characteristics and parameters: b)
When the inspection test results and the previous type test results have an unacceptable deviation: c)
The regular sampling test of the mass-produced motors shall be carried out at least once every two years. d)
5.4 The type test items of the motor include
all the items of the inspection test:
Thermal test:
The determination of efficiency, power factor and slip rate: Short-time over-torque test:
The determination of maximum torque:
The determination of minimum torque during starting (only carried out during the identification of new products): The determination of noise (according to the provisions of 4.17 of this standard). g
5.5 Mechanical inspection items of the motor include: Rotation inspection: When the motor rotates, it should be smooth and brisk without stagnation: a
JB/T10446—-—2004
b) Appearance inspection: Check whether the motor is assembled completely and correctly, and the paint on the motor surface should be dry, uniform, without stains, damage, cracks, etc.:
Installation dimensions, external dimensions and key dimensions inspection: The installation dimensions and external dimensions shall comply with the provisions of 3.8.1 of this standard, and the dimensions of the shaft extension key shall comply with the provisions of 3.8.2 of this standard. 5.6 The various tests specified in 5.2 (except e) and h) of this standard) and 5.4 (except g) of this standard) shall be carried out in accordance with GB/T1032. 5.2 e) can be carried out according to JB/T10098 for a single coil, 5.2 h) can be carried out according to GB10068, 5.4 g) can be carried out according to GB/T10069.1, and 5.5 c) installation dimension and tolerance inspection can be carried out according to GB/T4772.2. 5.7 The test of the protection level of the motor housing can be carried out when the product structure is finalized or when there are major changes in the structure and process. The test method of the protection level of the housing shall be carried out in accordance with GB/T4942.1. 6 Marking, packaging and service life
The nameplate and its data shall be guaranteed not to fall off or wear out during the service life of the motor. 6.1
The nameplate shall be fixed on a conspicuous position of the motor base and shall indicate the following items:6.2
Manufacturer name:
Motor name:
Motor model:
Enclosure protection grade (another nameplate is allowed):Rated frequency:
Rated power:
Rated current:
Rated voltage:
Rated speed:
Rated power factor:
Insulation grade or temperature rise limit;
Wiring method;
Rated type:
Cooling method;
Manufacturer's production year and production number:
Weight:
Standard number.
Each outlet terminal of the motor winding and the wiring position in the junction box shall be marked with corresponding signs, and the signs shall be in accordance with the provisions of Table 10. 6.3
Name of stator winding
First phase
Second phase
Third phase
Outlet terminal mark
6.4 The shaft extension of the motor is tied to the shaft extension, and the shaft extension and the flat key surface should be rust-proof and protected. 6.5 The motor's instruction manual, electrical data, appearance drawing and product certificate should be provided to the user along with each motor. 6.6 The packaging of the motor should 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.
6.7 The words and signs on the outer wall of the packing box should be clear and neat, and the contents are as follows: a) Name of the shipping station and manufacturer:
Name of the receiving station and receiving unit:
Model and product number of the motor:
Net weight of the motor and gross weight of the box: d
Box size:
JB/T10446—2004
The words "Handle with care" and "Avoid rain" should be marked in appropriate positions on the outside of the box, and the graphics should comply with the provisions of GB/191. 6.8 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 time, the manufacturer shall repair or replace parts or motors for the user free of charge.
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