JB/T 10314.2-2002 Technical requirements for YRKK, YRKK-W series high voltage wound rotor three-phase asynchronous motors (frame size 355-630)
Some standard content:
ICS29.160.30
Machinery Industry Standard of the People's Republic of China
JB/T10314.2-—2002
YRKK, YRKK--W series high voltage winding
rotor three-phase asynchronous motor
Technical conditions
(Frame size 355～630)
Specification for YRKK, YRKK--W series high voltage three-phase wound--rotor induction motors
(Frame numbers 355630）
2002-07-16 Issued
2002-12-01 Implementation
The State Economic and Trade Commission of the People's Republic of China Issued Standards
Normative reference documents
Type, basic parameters and dimensions,
Technical requirements
Inspection rules
Marking, packaging and service life
JB/T10314.2—2002
This part is formulated for enclosed three-phase asynchronous motors with wound rotors and air-to-air coolers. The "agreement" in this part refers to the agreement between the manufacturer and the user. JB/T10314 consists of two parts:
JB/T10314.2--2002
Part 1: Technical conditions for YRKS, YRKS-W, YRQF series high-voltage winding rotor three-phase asynchronous motors (frame size 355-630);
-Part 2: Technical conditions for YRKK, YRKK-W high-voltage winding rotor three-phase asynchronous motors (frame size 355-630). This part is the second part of JB/T10314. This part is proposed by the China Machinery Industry Federation. This part is under the jurisdiction of the National Technical Committee for Standardization of Rotating Electric Machines (SAC/TC26). This part was drafted by the Shanghai Electric Science Research Institute, and Shanghai Electric Machine Factory, Shenyang Electric Machine Factory, Dongfang Electric Machine Factory, Zhangdian Electric Machine Factory, Xiangtan Electric Machine Factory, Jiangxi Electric Machine Factory, Harbin Electric Machine Factory, Jiamusi Electric Machine Factory, and Jinan Shengjian Electric Machine Factory participated in the drafting. The main drafters of this part are Kang Ping, Zhang Yihe, Wu Xiaozheng, Zhang Dongsheng and Guo Dengta. I
1 Scope
JB/T10314.2-2002
Technical conditions for YRKK, YRKK-W series high-voltage wound rotor three-phase asynchronous motors
(Frame size 355-630)
This part specifies the types, basic parameters and dimensions, technical requirements, inspection rules, and marking and packaging requirements of enclosed three-phase asynchronous motors with air-to-air coolers. This part is applicable to general-purpose (after negotiation, it can also be used to tow winches, rolling mills, etc.) YRKK, YRKK-W series high-voltage wound rotor three-phase asynchronous motors with frame sizes of 355-630 (hereinafter referred to as motors). The YRKK series is suitable for indoor use, and the YRKK-W series is suitable for outdoor environments containing dust and moisture. 2 Normative references
The clauses in the following documents become the clauses of this part through reference in this part of JB/T10314. For all referenced documents with dates, all subsequent amendments (excluding errata) or revisions are not applicable to this part. However, parties to agreements based on this part are encouraged to study whether the latest versions of these documents can be used. For all undated referenced documents, the latest versions are applicable to this part.
GB/T191-2000 Pictorial symbols for packaging, storage and transportation (eqvISO780:1997) GB755-2000 Ratings and performance of rotating electrical machines (idtEC60034-1:1996) GB/T997--1981 Code for motor structure and installation type (eqvEC60034-7:1972) GB/T1032-1985 Test methods for three-phase asynchronous motors GB/T1993-1993 Cooling methods for rotating electrical machines (eqvIEC60034-6:1991) GBT4772.2--1999 Dimensions and output power levels of rotating electrical machines Part 2: Frame size 355~1000 and flange size 1180~2360 (idtIEC GB/T4831-1984 Method for compiling motor product models GB/T4942.1-2001 Classification of protection of rotating motor housing (P code) (IDT 60034-5: 1991) GB10068-2000 Mechanical vibration of motors with shaft center height of 56mm or more Vibration measurement, evaluation and limit (IDT 60034-141996) GB/T10069.1-1988. Method for measuring noise of rotating motors and limit value Engineering method for measuring noise of rotating motors (neg ISO1680-1: 1986) GB/T10069.2-1988 Measurement method and limit of noise for rotating electrical machines Simple measurement method for noise (negISO1680-2:1986)
GB10069.3--1988 Measurement method and limit of noise for rotating electrical machines Noise limit (negIEC60034-9) JB/T4375--1999 Environmental conditions for use of electrical products in outdoor and indoor corrosive locations JB/T10098-2000 Impact voltage withstand level of formed stator coils of AC motors (idtEC60034-15:1995) 3 Types, basic parameters and dimensions
3.1 The motor model consists of three parts: series code, specification code and environmental code, arranged in sequence (see GB/T4831-1984). 1
JB/T10314.2-2002
Example: YRKK—3551-4—W
Environment code, indicating outdoor (indoor road-saving) specification code, indicating shaft center height 355mm, No. 1 core length, 4 poles series code, indicating closed line rotor asynchronous motor with air-to-air cooler 3.2 The enclosure protection level of the motor is IP44 for the YRKK series and IP54 for the YRKK-W series. After negotiation, the enclosure protection level of the collector ring can also be IP22 or IP23 (see GB/T4942.1-1985). 3.3 The cooling method of the motor is IC611 (see GB/T1993-1993). 3.4 The structure and installation type of the motor is IMIB3 (see GB/T997-1981). 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 6000V or 3000V. 3.7 The correspondence between the motor frame number and the speed and power shall be in accordance with the provisions of Table 1. Table 1
Step speed r/min
Frame number
3.8 Motor size and deviation:
3.8.1 The installation size and deviation of the motor shall comply with the provisions of Table 2, and the external dimensions shall not be greater than those specified in Table 2. 2
JB/T10314.2-2002
0001000
0c9-09SH
00SSSEH
Frame number
JB/T10314.2--2002
The dimensions and deviations of the motor shaft extension key shall comply with the provisions of Table 3. Table 3
Technical requirements
Calculation width
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 not exceed 40℃. Unit: 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℃, it shall be in accordance with the provisions of GB755-2000. 4.1.3 Minimum ambient air temperature: -15℃ for motors using rolling bearings, 0℃ for motors using sliding bearings, or by agreement.
4.1.4 The average maximum relative humidity of the wettest month is 90%, and the average minimum temperature of the month is not higher than 25℃. 4.1.5 For YRKK-W series motors, the maximum rainfall intensity of the use environment is 6mm/min, the maximum solar radiation intensity is 1120W/m2, and there may be sand, dust, ice, snow, dew, frost, etc. (see JB/T4375-1999). 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--2000. 4.3 When the power, voltage and frequency are rated, the guaranteed values of motor efficiency and power factor shall comply with the provisions of Table 4. When the motor adopts a brushless lifting structure, its efficiency is allowed to be reduced by 0.3%; when the motor adopts sliding bearings, the efficiency is allowed to be reduced as specified in Table 5.
Efficiency is determined by indirect method. When determining the total loss of the motor, the 7R loss of the winding should be converted to the value at the insulation reference operating temperature corresponding to the temperature rise of the assessment, and the stray loss is calculated as 0.5% of the rated input. 4.4 At rated voltage, the guaranteed value of the ratio of the maximum torque of the motor to the rated torque should be 1.8 times. 4.5 The tolerance of the guaranteed value of the electrical performance of the motor should comply with the provisions of Table 6. 4.6 The motor adopts F-class insulation, and the temperature rise is assessed according to Class B. When the altitude and ambient air temperature meet the requirements of 4.1 of this part, the temperature rise limit of the motor winding (resistance method) and the temperature rise limit of the collector ring (thermometer method) should not exceed 80K: the allowable temperature of the bearing (thermometer method or embedded thermometer method) should not exceed 95℃ for rolling bearings and 80℃ for sliding bearings (when the oil outlet temperature is not higher than 65℃), or as agreed.
Frame size
Permitted reduction in efficiency%
JB/T10314.2--2002
JB/T10314.2—2002
Efficiency n
Power factor cos p
Maximum torque
-0.10(1-)
（1-cos）6
10% of guaranteed value
4.7 In hot state and with gradually increasing torque, the motor should be able to withstand over-torque exceeding 60% of the rated torque for 15s without sudden change in speed or stalling, and the voltage and frequency should be maintained at the rated value. 4.8 In no-load condition, the motor should be able to withstand an increase in speed to 120% of its rated value for 2min without harmful deformation. 4.9 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 the following formula: R=
1000+P
Wherein:
R—-insulation resistance of winding, unit is MQ: U winding rated voltage, unit is V:
rated power, unit is kw.
4.10 The winding of the motor shall be able to withstand a withstand voltage test lasting 1 minute 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, and the rotor is twice the rotor winding open circuit voltage when it is stationary 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. 4.11 The stator coil of the motor shall be able to withstand the earth and inter-phase impulse 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/T10098-2000. 4.12 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. 4.13 When the motor is unloaded, the effective value of the vibration velocity measured in the free suspension state (see GB10068--2000) 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). 4.14 The noise value of the A-weighted sound power level measured when the motor is unloaded shall not exceed the provisions of Table 7. Table 7
Unit: dB (A)
Rated power
>185~220
>220~550
>550~1100
>11002200
4.15 The motor has a cylindrical shaft extension. The frame sizes 355~500 are connected by a flat key, and the frame sizes 560~630 are connected by a tangential key, or as agreed.
4.16 The motor shaft extension is not allowed to bear the 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 coupling should have an axial limit device, and the allowable axial movement should be as agreed.
4.17 The motor is not allowed to reverse or brake by reverse power supply during operation. Whether it is allowed to reverse after stopping is determined by the manufacturer. 4.18 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 on the right side of the base, or according to the agreement.
JB/T10314.2—2002
4.19, the direction of the motor, when the letter sequence of the outlet terminal mark is the same as the voltage phase sequence of the three-phase power supply, from the shaft extension end, the motor should rotate clockwise, or according to the agreement. 4.20 The motor can be equipped with a moisture-proof heater. The heater should make the air temperature inside the casing higher than the ambient temperature, and it should be considered 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. 4.21 The motor should be equipped with a grounding terminal on the terminal box and the base, and marked with corresponding symbols or graphics. The design of the grounding terminal should ensure good connection and sufficient contact area with the grounding wire. 4.22 All markings 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 pass the inspection before leaving the factory, and a product certificate should be attached. 5.2 Each motor should be inspected and tested. The inspection test items include: mechanical inspection.
Measurement of the insulation resistance of the winding to the casing and between the windings (the cold insulation resistance can be measured during the inspection test, but the insulation resistance in the hot state b)
should not be lower than the provisions of 4.9 of this part). Determination of the DC resistance of the stator winding in the actual cold state. c)
Withstand voltage test.
Withstand impulse voltage test (random sampling test of a single coil). e
Measurement of no-load current and loss.
Note: The no-load characteristic curve needs to be measured during the type test. g) Determination of rotor voltage.
h) Vibration measurement.
i) Overspeed test.
5.3 The motor must be subjected to type test in any of the following situations. a)
When the manufacturer conducts the first trial production or small batch production after the finalization of the model. 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: Regular sampling of mass-produced motors, at least once every two years. d) Monthly
5.4 The motor type test items include:
All items of the inspection test:
Heat test:
Efficiency, power factor and slip rate measurement: Short-time overtorque test:
Maximum torque measurement:
Noise measurement.
5.5 Mechanical inspection items of motors include: a) Rotation inspection: When the motor rotates, it should be smooth and brisk without stagnation; 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.; c) Inspection of installation dimensions, overall dimensions and key dimensions: The installation dimensions and overall dimensions should comply with the provisions of 3.8.1 of this part, and the key dimensions should comply with the provisions of 3.8.2 of this part; c) Inspection of collector rings and brushes: The surface of the collector rings should be smooth and free of sand holes, and should have good contact with the brushes. There should be no significant sparks during operation, and the brush lifting device should be light and flexible and have good contact during short circuit. 7
JB/T10314.2-—2002
5.6 The various tests specified in 5.2 (except e) and h) and 5.4 (except f) of this part) shall be carried out in accordance with the provisions of GB/T1032-1985. 5.2 of this part e) may be carried out in accordance with the provisions of JB/T10098-2000 for a single coil, 5.2 of this part h) shall be carried out in accordance with the provisions of GB10068-2000, and 5.4 of this part f) shall be carried out in accordance with the provisions of GB/T10069.1~2-1988 and GB10069.3-1988. 5.5 of this part c) The inspection of installation dimensions and tolerances shall be carried out in accordance with the provisions of GB/T4772.21999. 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 housing protection level shall be carried out in accordance with the provisions of GB/T4942.1-1985. 6 Marking, packaging and service life wwW.bzxz.Net
The nameplate and its data shall be guaranteed not to fall off or wear out during the service life of the motor. 6.2
The nameplate should be fixed in a conspicuous position on the motor base, and the following items should be marked: a)
Manufacturer name:
Motor name;
Motor model:
Enclosure protection grade (separate nameplate is allowed): Rated frequency:
Rated power:
Rated current:
Rated voltage;
Rated speed:
Rated power factor:
Rated rotor current:
Open-circuit voltage of rotor winding:
Insulation grade or temperature rise limit:
Wiring method: If the stator and rotor use different wiring methods, they can be expressed in fractional form, with the numerator representing the stator and the denominator representing the rotor: Rated type:
Cooling method:
Manufacturer's production year and month and production number:
Weight;
Standard number.
6.3 Moisture-proof heaters should be provided with nameplates indicating the following items: Rated voltage:
b) Number of phases:
c) Rated power.
Each terminal of the stator and rotor windings of the motor and the wiring position on the terminal board should have corresponding markings, and the markings shall be in accordance with the provisions of Table 8. 6.4
Winding name
First phase
Second phase
Third phase
Terminal marking
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