JB/T 2224-2000 Technical requirements for large AC three-phase four-pole synchronous motors
Some standard content:
Mechanical Industry Standard of the People's Republic of China
JB/T2224
极创挎
码灯邪
2000-04-24鹃
瓦鱻极懂
2000-10-01小链
JB/T22242000
This standard is based mainly on GB/T755-2000 "Specifications and Performance of Rotating Electrical Machines" in terms of technical content, and is a revision of JB2224-77 based on the requirements of GB/T1.1-1993 and GB/T 1.3-1997. The main technical differences between this standard and JB2224-77 are as follows: - The expression rules are modified according to GB/T1.1-1993 and GB/T1.3-1997: - The temperature rise limit of stator and rotor windings and stator core F-fix insulation is added: A pair of chapters on inspection rules and packaging are supplemented and improved as necessary. This standard replaces B2224-77 from the date of implementation. This standard is proposed and managed by Harbin Large Electric Motor Research Institute: This standard is drafted by Lanzhou Electric Motor Co., Ltd., Harbin Electric Motor Co., Ltd., Dongfang Electric Motor Co., Ltd., Shanghai Electric Motor Factory, Beijing Heavy Electric Motor Factory, and Shenyang Electric Motor Co., Ltd. The main drafters of this standard are: Mao Daqing, Li Zhengang, Mou Lan, Shen Jinxiang, Fan Jianshan, Jin Xuan, Gao Qingheng. This standard was first issued in October 1977: It was reviewed and confirmed to be valid in September 1987, and was revised for the first time in December 1999. This standard is interpreted by Harbin Large Electric Motor Research Institute. I
1 Scope
JB/T22242000
JB222477
This standard specifies the type, basic parameters and dimensions, technical requirements, inspection rules, test methods, and marking and packaging requirements of large AC three-phase four-pole synchronous motors. This standard is applicable to large AC three-phase four-pole synchronous motors (hereinafter referred to as motors) for general use in driving fans, pumps, compressors and other machinery.
2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. At the time of publication of the standard, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. CB 191—1990
GB 7552000
GB/T 997—1981
GB/T 1029[993
GB/T 1096—1979
GB/T 1993—1993
Packaging, storage and transportation pictorial symbols (negISD780: 1985) Rotating electrical machines - Ratings and performance (idtIEC60034-1) Motor structure and installation type code (negEC60034-7: 1972) Three-phase synchronous motor test method (ne9EC60034-2) Ordinary flat key, type and size
Rotating electrical machine cooling method (egvEC60034-6: 1991) (GB/T4942.1—1985 Motor housing protection classification (eqVEC60034-5: 1981) GB 10068—1988
GB 10069 -1988
JB/T 6204—1992
Measurement method and limit of vibration of rotating electrical machine (ne9IFC60034—14:1986)Measurement method and limit of noise function of rotating electrical machine (neqIS01680--1~1680-2:1986)Stator insulation withstand voltage test specification for large high-voltage AC motorJB/T 10098—1999
Stator winding interturn insulation test specification for AC high-voltage motor3 Type, basic parameters and dimensions
3.1 Motor model indication method
Va 2000-04-24
2000-10-01Small cable
JB/T22242000
External diameter of stator core, mm
Rated power, kw||tt ||Synchronous motor
3.2 The motor's housing protection level (excluding collector rings) is P44 (see GB4942.1). 3.3 The motor's cooling method is IC37 or IC91W (see GB/T1993). 3.4 The motor's structure and installation type is [M7311 (see GB/T997) 3.5 The motor's rating is the maximum continuous rating and can be operated in S1 duty (see GB755). 3, 6 The motor's rated voltage is 6000 V or 10000 V. 3.1 The rated frequency of the motor is 50Hz
3.8 The rated speed of the motor is 1500r/min. 3.9 The rated power levels of the motor are 1250, 1600, 2000, 2500, 3200, 4000, 5000, 6300kW. If there are other power level requirements, the user can negotiate with the manufacturer. 3.10 The rated power factor of the motor is 0.9 (leading). 3.11 The main installation dimensions of the motor shall comply with the provisions of Figure 1 and Table 1, Figure 2 and Table 2. a-
T125041180
T1600--4/1180
T2000—4°1430
T2500—4/1430
T32004/1430
T4000- 4/1730
TS000—4/1730
TG300—4/1730
160 08.81
1808:819
20 8:819
JB/T22242000
F【咎格】
-0,062
讲棉）
3.12 The dimensions and tolerances of the motor shaft extension key shall be in accordance with the requirements of GB/T1096 and comply with the provisions of Table 3, 150
Shaft extension diameter
4 Technical requirements
Nominal size
JB/T22242000
Limit deviation
4.1 The motor shall be able to operate continuously at rated speed under the following conditions of use. 4.1.1 The altitude shall not exceed 1000㎡.
4.1.2 The ambient air temperature shall not exceed 40℃ and shall not be lower than 5℃. Key
Nominal size
Limit deviation
4.1.3 For motors using water-cooled coolers, the maximum water inlet temperature shall be 30℃ and the minimum shall be 5℃. If limited by the conditions of the installation site, the maximum cooling water temperature can be increased to 33℃ according to user requirements. 4.1.4 The average maximum relative humidity of the wettest month at the operating site shall be 90%, and the average minimum temperature of the month shall not be higher than 25℃. 4.1.5 The operating environment shall be free of corrosive gases such as acids and alkalis. 4.2 The guaranteed value of the ratio of the motor's stall torque to the rated torque at rated voltage is 1.0. 4.3 The guaranteed value of the ratio of the motor's nominal input torque to the rated torque at rated voltage is 0.7. 4.4 The ratio of the motor's stall torque to the rated torque at rated voltage is not less than 1.7. 4.5 The guaranteed value of the ratio of the motor's stall current to the rated current at rated voltage is shown in Table 4. 4.6 The guaranteed value of the motor's efficiency when the power, voltage, frequency and power factor are rated is shown in Table 4. Table 4
T1250 — 4/1180 ||tt || 1730
T6300— 4/1730
Rated current
4.7 The tolerance of the guaranteed value of the motor electrical performance shall comply with the provisions of Table 5, 4
JB/T22242000
Efficiencyn
Locked-rotor current
Locked-rotor torque
Nominal pull-in torque
Out-of-step torque
-0.,10 (1-n)
Guaranteed value +20%
Guaranteed value -15%
Guaranteed value -15%
Guaranteed value -10%
When within 4.1 Under the specified conditions and rated load, the temperature rise (or temperature) limits of the heating parts of the motor are shown in Table 6. Table 6
Stator winding
Rotor winding
Stator core
Collector ring
Insulation grade
(Oil outlet temperature shall not exceed 65°C)
?Rise (or temperature) limit
≥5000 kw is 100 K
<5000 kW is 105 K
Note: When the operating conditions and test location are different from the regulations, the temperature rise limit shall be corrected according to GBT755. 4.9 The insulation resistance of the motor winding in the hot state shall not be lower than the value obtained by the following formula. U
Where: R-
Insulation resistance of motor winding, MS:
Rated voltage of motor winding, V:
Rated power of motor, kw.
4.10 Insulation withstand voltage test of motor to ground: 1000 + P/100
Measurement method
Resistance method
Thermometer method
4.10.1 The winding of the motor shall be able to withstand a withstand voltage test of 1 min without breakdown. The frequency of the test voltage shall be 50 Hz and shall be a sine wave as far as possible. Its effective value shall be in accordance with the provisions of the table. 4.10.2 The same motor shall not be subjected to this test repeatedly. If the user requests, another test is allowed. The test voltage shall not exceed 80% of the value specified in the table.
4.11 The motor should be able to withstand the elevated voltage test without failure. The test is carried out at no load, the test voltage is 130% of the rated voltage and the test time is 3 minutes. The speed is allowed to increase during the test, but it should not exceed 1700t/min. The motor that has undergone the turn-to-turn impulse withstand voltage test does not need to undergo this test.
Stator winding
Field winding
Motor components
JB/T22242000
Test voltage (effective position)
1000V+2 times rated voltage
a) When the motor starts, the field group is short-circuited or connected in parallel with a resistor that is less than 10 times the winding resistance
b) When the motor starts, the field group is connected in parallel with a resistor that is equal to or greater than 10 times the winding resistance
10 times the rated excitation voltage, but the minimum is 1500V and the maximum is 3500V1000V+2 times the effective value of the maximum voltage (under the specified starting conditions, the maximum voltage exists between the wire terminals of the field winding), but the minimum is 1500
4.12 Under no-load conditions, the motor should be able to withstand an overspeed test of 1800r/min for 2 min without causing harmful deformation 4.13 The motor should be able to withstand 1.5 times the rated torque in the hot state for 15s without losing step or causing harmful deformation. At this time, the voltage, frequency and excitation should be maintained at the value equivalent to the rated load, and the excitation device should be in normal operation. 4.14 The effective value of the dynamic speed measured at the bearing when the motor is unloaded should not exceed 2.8mm/s. 4. 15 The value of the A-weighted sound power level measured when the motor is unloaded should not exceed 105 dB (A) (1250~2500 kW) or 10G dB (A) (>2500~5000kW). The noise limit of 6300kW should be implemented according to the agreement between the user and the manufacturer. 4.16 The stator of the motor has six outlets, which are led out at the bottom of the non-shaft extension stator, and the ends should be clearly marked. 4.17 The direction of rotation of the motor is counterclockwise when viewed from the shaft extension end. Note: If reverse rotation is required, it should be indicated when ordering. 4.18 The motor has a single shaft extension, and the shaft extension is not allowed to bear external radial and axial forces. 4.19 The motor uses a seat-type sliding bearing lubricated by circulating oil. The oil supply system must be ordered separately. 4.20 The excitation device of the motor is supplied as a set by the cam machine manufacturer. When the wind resistance pressure drop value of the motor's external wind system exceeds the allowable value in Table 8, a fan must be added. The fan and air duct required by the motor shall be provided by the user. When the motor is cooled by closed-loop circulating air and the motor manufacturer needs to supply a complete set of coolers, it should be noted when ordering. 4.22 The calculated value of the allowable moment of inertia of the driven machinery is shown in Table 8. Table 8
T1250--4/1180
T1600—4/1180
T2000——4/1430
T2500-4/1430
T3200-4/1430
T4000--4/1730
T5000—4/1730
T6300-4/1730
External maximum allowable windshield pressure drop, Pa
Allowable moment of inertia of motor, kg·m1000
Note: The allowable moment of inertia is calculated based on the average value of the load resistance torque during full-pressure starting, which is 20% of the rated torque. If the operating conditions are different, it should be converted. 4.23 The motor should be equipped with a grounding terminal on the base and should have an obvious sign indicating grounding. This sign should be guaranteed not to fall off or wear out during the use of the motor.
5 Inspection rules and test methods
JB/T22242000
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 should be inspected and tested. The inspection test items include: a) Mechanical inspection:
6) Measurement of insulation resistance between winding and housing and between windings; ) Measurement of DC resistance of the whole group in actual cold state d) Measurement of air cutting characteristics;
e) Measurement of steady-state short-circuit characteristics
) Overspeed test;
) Measurement of vibration:
h) Intermittent impulse withstand voltage test:
i) Short-time rise voltage test (if test h has been carried out, this test may not be carried out): i) Withstand voltage test.
5.3 The motor shall be subjected to type test in any of the following situations: a) When trial production of new products is completed:
b) When the changes in motor design or process are sufficient to cause changes in certain performances, the relevant type test items shall be carried out: ) When the inspection test results have unacceptable deviations from the previous type test results. 5.4 The type test items of the motor include: a) All items of the inspection test:
b) Determination of the motor excitation current under no-load overexcitation and at rated voltage and rated current; c) Temperature rise test*;
d Determination of efficiency:
e) Determination of winding reactance and time constant: f) Determination of stall current and stall torque*
8) Determination of nominal pull-in torque*,
) Determination of step torque*;
Determination of noise.
Note: For the test items marked with (*), if the test conditions are not met, the motor manufacturer can negotiate with the user to solve the problem. 5.5 Mechanical inspection items for 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. The paint on the motor surface should be dry and even without stains, damages, cracks, etc.; c) Inspection of installation dimensions and key dimensions: The installation dimensions should comply with the provisions of 3.11 of this standard, and the key dimensions should comply with the provisions of 3.12. 5.6 The various tests specified in 5.2 (except gh and j) and 5.4 (except i) of this standard shall be carried out in accordance with GB/T1029, 5.2 item j shall be carried out in accordance with JB/T6204, 5.2 item h shall be carried out in accordance with JB/T10098, 5.2 item g shall be carried out in accordance with GB10068, and 5.47 item i shall be carried out in accordance with GB 10069. 5.7 The test of the protection level of the motor can be carried out only when the product is finalized, and the test of the protection level of the shell shall be carried out in accordance with GB/T4942.1. 6 Marking and packaging 6.1 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 on a conspicuous position on the motor base, and the items to be marked are as follows: a) Manufacturer name;
b) Motor name:
c) Motor model:
d) Rated power, kw;
e) Rated voltage, V:
f) Rated current, A:
g) Rated excitation voltage, V;
h) Rated excitation current, A:
i) Rated frequency, Hz;
j) Rated speed, r/min:
k) Rated power factor:
1) Number of phases;
m) Connection of stator winding:
\) Insulation grade;
0) Product standard number:
P) Cooling medium temperature or cooler water temperature (only for the motor designed for other temperatures above 40℃, it should be marked; for the motor designed for other water temperatures above 30℃, it should be marked on the nameplate of the cooler); g) Altitude (only for the motor designed for the place of use above 1000m above sea level, it should be marked); n) Sub-quantity, kgt
$) Manufacturer's production number:
t) Manufacturer's production year and month,
6.3 The motor should be equipped with a mark indicating the direction of rotation in a conspicuous position. 6.4 The six outlets of the motor stator winding should be marked with U1, V1, W1.U2, V2, W2 respectively. The two outlet terminals of the motor excitation winding should be marked with F1 and 2 respectively. The marks should be directly engraved on the outlet terminals, and the marks should not be easily erased during the use of the motor. 6.5 The shaft extension key of the motor must be tied to the shaft, and the shaft extension and key surface should be rust-proof and protected. 6.6 The packaging of the motor should be able to avoid moisture and damage during transportation. 6.? The words and signs on the outer wall of the packaging box should be clear and neat, and the contents are as follows: a) Name of the shipping station and manufacturer:
b) Name of the receiving station and receiving unit;
e) Motor model and product number:
④) Net weight of the motor and the gross weight of the box; 8
e) Box size;
JB/T22242000www.bzxz.net
I) The words "Handle with care" and "Afraid of moisture" should be marked in appropriate positions outside the box, and the graphics should comply with the provisions of GB91. Warranty period and random documents
7.1 If the user uses and stores the motor correctly according to the provisions of the instruction manual, the manufacturer shall guarantee that the motor can operate well within one year of use, but no more than one year from the date of shipment from the manufacturer. If the motor is damaged or cannot work 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. 7.2 Each motor shall be provided with the following documents: a) Product certificate:
b) Instruction manual:
c) Electrical data:
d) General assembly drawing:
e) Appearance drawing:
↑ Bearing drawing;
g) Random file directory:
b) Packing list.
Extremely creative color
Code lamp parrot
Extend the eye 880b1230
19XX nest XX cabin
100044
Dai section x/X
Rectangle XXX.XXX
19XX nest XX Ridge
Purchase XXX.XX Guest
Pengxian extreme key sticker
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