JB/T 3758-1996 General technical requirements for electric motors for household washing machines

JB/T 3758-1996 General technical requirements for electric motors for household washing machines JB/T3758-1996 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T3758wwW.bzxz.Net
1996-11-07
JB/T37581996
This standard is based on the International Electrotechnical Commission IEC34-1 Ratings and Performance of Rotating Motors (1994 Edition), GB 3537-83 (Technical Conditions for XD Motors for Washing Machines), GB9650--88 Motors for Washing Machine Dehydration, JB3758-B4& Technical Conditions for Double-cylinder Washing Machine Dehydration Motors and ZBK20004-89 Technical Conditions for Household Fully Automatic Washing Machine Motors, and is revised into one standard - this standard. It is consistent with the relevant provisions of the international standard as much as possible. This standard involves IEC335-1 General Safety Requirements for Household and Similar Electrical Appliances, IEC335-2-4 Special Requirements for Centrifugal Dehydrators> <1984 Edition>, IEC335-2-7 Special Requirements for Washing Machines\(1984 Edition) for motor safety requirements can be adopted.
In this way, by adopting international standards, the quota, performance and safety requirements of motors for household washing machines can be as consistent as possible with international standards, and the performance and safety of the motors can be comparable to those of foreign advanced standards, in order to meet the needs of international trade and technical exchanges. This standard will replace GB3537, GB9650, JB3758 and ZBK20 from the date of entry into force. 004 four standards, the change period is one year. This standard is issued and managed by the National Rotating Electrical Machine Standardization Technical Committee Small Power Motor Standardization Technical Committee. The drafting unit of this standard: Guangzhou Electric Science Research Institute of the Ministry of Machinery Industry. The main drafter of this standard is Hou Tingxiang
The first release date of this standard is November 1996. This standard is entrusted to the National Rotating Electrical Machine Standardization Technical Committee Small Power Motor Standardization Technical Committee for interpretation. 1 Scope
JB/T3 7581996
GB3537-83
GB9650-88
JB3758-84
ZBK2000489
This standard specifies the basic parameters, technical requirements, inspection rules, test methods, quality assurance period, packaging, transportation and storage of single-phase capacitor-operated asynchronous motors for household medium-power washing machines (hereinafter referred to as special motors). This standard is applicable to motors for general household electric washing machines (washing machines, membrane water machines and washing-extracting machines). This standard does not apply to motors for washing machines with special requirements such as industrial and commercial use. 2 Reference standards
The provisions contained in the following subtitles constitute the provisions of this standard through reference in this standard. In the standard version, the versions shown are valid. All standards are subject to interpretation, and parties using this standard should explore the possibility of using the latest version of the following standards. GB 191—90
GB 755—87
GB1971—81
GB/T 1993—93
Pictorial marking for packaging, storage and transportation
Basic technical requirements for rotating machinery
Motor line terminal marking and rotating space
Motor cooling method
GB/T2423.3—93 Basic environmental test procedures for electric and electronic products Test CaT constant humidity and heat test method GB 2828—87
Remote batch inspection counting sampling procedures and sampling tables GB 4772.1—84
GR4942.1—85
GB 5171—91
GB 9651B8
Motor dimensions and tolerances Motors with frame sizes 36~400 and flange numbers FF55~FF1080 or FT55FT1080
Motor housing protection classification
General technical requirements for small power motors
Test methods for single-phase asynchronous motors
GB 10069. 1—88
Determination methods for noise of rotating electrical machines and engineering determination methods for limiting noise GB12350—90
JB/Z 294—87
JB/T 50071-95
3 Duty and rating
3.1 Duty and rating
Safety requirements for small power motors
Test method for insulation of AC low voltage motors with windings General rules for quality classification of small power motors Unless otherwise agreed between the manufacturer and the user, the duty and rating of the motors shall be as follows: Motors for washing machines and dehydrators shall be S1I-made, continuous rating; motors for dehydrators shall be S2T-made, 5 min rating (S2—5 min) 3.2 Rated output
The rated output power of the motors are as follows:
25, (30), 10, 60, 90, 120, (135), 180, 250 W. Note: The values ​​in brackets are not recommended. 3.3 Rated voltage, frequency and speed JB/T37581996 The rated voltage of the motor is 220V, the rated frequency is 50Mz, and the synchronous speed is 1500r/in. 4 Technical requirements 4.1 Operation case 4.1.1 Unless otherwise required by the user, the motor should be designed according to the following altitude, ambient temperature and relative humidity. a) The altitude shall not exceed 1000m.
When the altitude of the operating location is specified to be more than 1000m or the cooling medium temperature of the operating location decreases with the increase of altitude, it shall be in accordance with the provisions of 5.3, 4 of GB557
b) The ambient air temperature of the operating location varies with the season, but does not exceed 40℃. When the highest ambient air temperature of the operating location is higher or lower than 40℃, it shall be in accordance with the provisions of 5.3.4 of GB755. e) The average maximum relative humidity of the wettest days at the operating location is 90%, and the average minimum temperature of the month is not higher than 25℃. Under this relative humidity of ambient air, the motor can be safely put into operation after a long shutdown. 4.1,2 During the operation of the motor, the deviation of the medium source medium voltage and frequency from the rated value shall be in accordance with the provisions of 3.2.2 of GB5171. 4.2 Temperature rise and limit values ​​
4.2.1 When the motor adopts E-class or R-class insulation and the operating environmental conditions meet the requirements of 1.1 of this standard, the temperature rise limits are as follows: For S1 rated motors, the stator winding temperature rise limit (resistance method): For E-class insulation, it should not exceed 75K; for B-class insulation, it should not exceed 85 K.
For S2 rated motors, the stator winding temperature rise limit (resistance method): For E-class insulation, it should not exceed 85K; For B-class insulation, it should not exceed 90K:
Bearing temperature limit (thermometer method): For rolling bearings, it should not exceed 95°C; for sliding bearings, it should not exceed 80°C. If the altitude or ambient air temperature of the test site is different from that specified in 4.1 of this standard, the temperature rise limit shall be revised in accordance with the provisions of 5.3.5 of GB755.
4.2.2 The cooling method of the motor shall be IC01 as specified in G1993. 4.3 Marking
4.3.1 All markings on the motor may be printed, engraved, pressed or other effective marking methods, and must be clear, durable and not easily rubbed during the entire service life. 4.3.2 The motor nameplate should be fixed on the machine: model or stator core in an obvious position, and the items to be marked on the nameplate are as follows:) Motor model or name:
Manufacturer name and manufacturer mark:
Manufacturer production number or production year and month:
d) Wiring diagram:
Insulation level:
Shell protection level;
Duty system:
Rated power:
Rated medium voltage:
Rated current:
k) Rated frequency:
I) Capacitor power and rated voltage.
When the nameplate must be reduced, it can be omitted, f, and each item can be marked separately. 4.3.3 The winding lead wire mark shall be engraved on the lead wire terminal or marked with a label and engraved on the lead wire terminal at the same time according to the provisions of GB1971, but the label shall not be hung alone.
JB/T37581996
The motor may use the lead wire color instead of the line terminal mark, and its color shall be consistent with the wiring diagram. 4.4 Shell protection
4.4.1 The shell protection level of the motor shall be 1P00 as specified in GB4942.1. 4.4.2 The mechanical strength and structure of the motor shell shall comply with the provisions of Nos. 12 and 13 of GB12350. 4.5 Insulation performance
4.5.1. When the motor is in hot state or after the temperature rise test, the insulation resistance of its stator winding to the machine should not be less than 2M<under normal conditions, not less than 20MΩ)
4. 5.2 The motor winding to the shell should be able to withstand a withstand voltage test lasting 1 min without flashover or breakdown. The frequency of the test voltage is 50Hz, the waveform is as close to the sine wave as possible, and the effective voltage is 1500V. When doing factory inspection in mass production, it is allowed to use a test with an effective voltage of 1800V for 1B instead. The test voltage is applied by the sample. The motor should not repeat this test during acceptance, but if the user requires it, it is allowed to conduct another withstand voltage test, and the test voltage should not exceed 1200V. If necessary, the motor should be dried before the test. 4. 3. The stator winding of the motor should be able to withstand the insulation impulse voltage test between the components without failure. The impulse test voltage (peak value) is 1800V, and the time before the impulse voltage is 0.5u. ​​It is also allowed to replace it with an increased voltage test. The test is carried out when the motor is running without load, and the external voltage is 130% of the rated voltage for 1 rmin.
4.5.4 Under normal operating temperature and no-load operation, the leakage current should not exceed 0.5 mA. 4.6 Thermal requirements
After the motor is subjected to a 1 d (48 h) wet heat test, the insulation performance should meet the following requirements: a) The insulation resistance between the motor winding and the housing should not be less than 2Mn b) The insulation withstand voltage between the motor winding and the housing should withstand the withstand voltage test with an effective value of the test voltage of 1250Y for 1 min, and the rain insulation should not be broken down.
4.1 Starting
The motor is started three times at 0.85 times the rated voltage under actual load (or simulated load). At the beginning of the start, it should be in the actual cooling state. Between continuous starts, the motor should reach a stationary state before starting. 4.8 Durability
4.81 The cumulative operation time of the motor of S1 working system at 1.1 times rated voltage and 0.9 times rated voltage under rated load is 48h respectively. The cumulative operation time of the motor of S2 working system at 1.1 times rated voltage and 0.9 times rated voltage under actual load (or simulated load) for 5min and stop for 3min is 48h respectively.
4.8.2 The motor is started 50 times at 1.1 times rated voltage and 0.85 times rated voltage under rated load, and the power-on time of each time is at least 10 times the time required for automatic to full speed, but the shortest time is not less than 10h. The motor of S2 working system is only required to start 50 times at 0.85 times rated voltage. After each start, there should be a stop time to prevent overheating, which should be at least three times the continuous working time of the power supply start. 4.&3 After the tests specified in 4.8.1 and 4.8.2, the motor should also withstand the insulation performance test in 4.6 of this standard, but the insulation resistance value should not be less than 1 M.
4.9 Abnormal operation
The motor is subjected to the locked rotor test under the actual cooling state with the rated voltage applied. The power-on time is specified as follows: 15 minutes for the S1 working motor.
5 minutes for the S2 working motor.
At the end of the above-mentioned test time or at the moment of the protector action, the winding temperature of the E-class insulation should not exceed 215℃, and the B-class insulation should not exceed 225℃. During the test, no flashover or melting metal should occur. 4.10 After the abnormal operation test in 4.9, the motor should be able to withstand the 1-minute dielectric strength test when it cools to room temperature. The test voltage is 1000 V.
JB/T3758
4.11 When the motor is under rated load, the voltage at the capacitor terminal should not exceed its rated voltage. When running without load, the voltage at the capacitor terminal should not exceed its maximum allowable voltage.
4.12 The creepage distance and electrical clearance of the motor terminal should not be less than 2.5mm. 4.13 The motor should have a grounding device and a grounding mark. 4.14 Use one of the motor lead cables to suspend the motor's deadweight for 10% continuously, and there should be no abnormality at its connection. 4.15 Where this standard does not mention, it shall comply with the provisions of 4, 12~15 and 17~20 in GB12350. 4.16
Characteristics and requirements
Under no-load conditions, the motor should be able to withstand an increase in speed to 120% of its rated value for 2mi without causing harmful deformation. 4.16.1
The motor shall be able to withstand an over-torque test of 1.4 times the rated torque in a hot state and with gradually applied torque for 154.16.2
without a sudden change in speed, stalling, or deformation. At this time, the voltage and frequency shall maintain the rated values. 4.16.3 At the rated voltage and rated frequency, the guaranteed value of the motor's stall torque (Tkm) shall comply with the provisions of Table 1. 4. 16. 4
At rated voltage and rated frequency, the guaranteed value of the minimum torque (Tmin>) during the motor starting process shall comply with the provisions of Table 1. At rated voltage and rated frequency, the guaranteed value of the motor maximum torque (I) shall comply with the provisions of Table 1. At rated voltage and rated frequency, the guaranteed value of the motor stall current (I) shall comply with the provisions of Table 1. 4. 16. 6
Project name
Stalling torque
Minimum torque
Maximum torque
Stalling current
0. 440 0. 470 0. 530
The numbers with the symbol "*" are the values ​​of motors for paint washing and dehydrating machines 4. 16. 7
1. 400 *
1.050 *1.200* j1. 40 *
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 2. Table 2
Item Name
Power Factor
Note: The numbers with "" symbols are the values ​​for motors used in washing and dehydrating machines. (45)
4.16.8The tolerance of the guaranteed value of the motor's electrical performance shall comply with the provisions of Table 3. 90
4.16.9When the motor is running at rated voltage and rated frequency, the noise limit of the A-weighted sound power level is as follows: Sliding Bearing motor 55dB(A)
Rolling bearing motor 62dBA）
JB/T3758
4.16.10 The motor assembly should be complete and correct, the surface protection layer should be dry, complete, uniform, without spots, bubbles, damage, cracks, rust, adhesion of dirt, etc.
4.1611 When the motor rotates, it should be smooth and brisk, without stagnation, the sound should be harmonious and without harmful noise; the motor installation size and overall dimensions, shaft extension radial runout should comply with the drawings specified in the agreement. 4. 16. 12
Test rules
Electrical performance name
Power factor cosp
Stalling torque
Minimum torque
Maximum torque
Stalling current
-0. 16(1-pair) Maximum—0. 07
Guaranteed value -15%
Guaranteed position -15%
Guaranteed value -10%
Guaranteed value +20%
Product inspection There are two types of factory inspection (or delivery inspection) and type inspection (or routine inspection). 5.1 Factory inspection
5.1.1 Each motor must pass the factory inspection before leaving the factory, and be accompanied by a product certificate. More.1.2 Factory inspection items include:||tt ||Appearance inspection of the motor;
Rotation inspection of the motor;
Mechanical dimension inspection of the motor:
Determination of DC resistance of the stator group in actual cold state:Determination of insulation resistance of stator winding to the casing and between each other; Withstand voltage test of stator mirror group to the machine light and between each other: g) Insulation test of stator winding turns;
Determination of open-rotor current and loss;
) Determination of locked-rotor current, loss and torque. 5.2 Type inspection
5.2.1 Type inspection must be carried out in any of the following situations: Trial production and adjustment of new products or old products transferred to the factory for production: a
After formal production, if there are major changes in structure, materials, and processes that may affect product safety and performance: During normal production, at least one type inspection shall be carried out every two years (or after accumulating a certain amount of production): c
When the product is resumed after a long period of suspension of production: d
When the export inspection results are significantly different from the last type inspection results When the national quality supervision agency proposes a type inspection requirement. f
5.2.2 Type inspection items include:
All items of factory inspection;
b) Temperature rise test:
Determination of efficiency and power factor:
Short-time over-torque test:
e) Determination of maximum torque:
Overspeed test;
) Determination of noise:
h) Determination of minimum torque during starting: Determination of stall torque and stall current;
Heat test;
|) Determination of capacitor terminal voltage
1) Durability test;
m) Abnormal operation test:
n) Determination of leakage current.
5.3 Sampling and batching rules
JB/T3758
5.3.1 Factory inspection: c, d, e, g, i in 5.1.2 of this standard can be sampled. The sampling method shall be prepared by the manufacturer in accordance with the provisions of GB2828 and based on the factory's quality level.
5.3.2 During type inspection, product sample selection, batching and product quality determination shall be carried out in accordance with the provisions of JB/T50071. 6 Test methods
6.1 The test methods for electrical properties in Chapter 5 of this standard shall be carried out in accordance with the provisions of GB9651. The impulse withstand voltage test in 5.1.2 of this standard shall be carried out in accordance with the provisions of JB/294. During the temperature rise test, the motor should be the same as the normal use conditions of the washing machine. If it is running with a fan, the fan should be installed for the temperature rise test.
S2 Duty motor temperature rise test is carried out at rated operation for 15 min6.2 The motor housing mechanical strength test is carried out in accordance with the provisions of GB12350.6.3 The tolerance test of the installation dimensions in 4.16.12 of this standard is carried out in accordance with the provisions of GB 4772.1.6.4 The damp heat test of the motor is carried out in accordance with GB/T2423.3.6.S The leakage current test of the motor is carried out in accordance with the provisions of CR12350.6.6 The noise measurement of the motor is carried out in accordance with the provisions of GB10069.1.6.7 The durability test and abnormal operation test of the motor are carried out in accordance with the provisions of GB12350.7 Warranty period
When the user uses and stores the motor correctly in accordance with the provisions of the manufacturer's use and maintenance instructions, the manufacturer shall ensure that the motor can operate normally within one year of use, but no more than two years from the date of shipment from the manufacturer. If the motor is damaged or fails to work normally due to poor manufacturing quality within the specified time, the manufacturer shall repair or replace the motor for the user free of charge. 8 Packaging, transportation and storage
8.1 Packaging and transportation
The shaft of the motor shall be protected by temporary anti-rust coating before packaging. The packaging must be firm and reliable. The packaging box should be marked with "Handle with care", "Afraid of moisture", etc. The corresponding drawings should comply with the provisions of 191. The packaging box or box should be handled with care during transportation to avoid collision and knocking. It is strictly forbidden to put it together with acid and alkali corrosive items. 8. 2 Storage
The motor should be placed in a clean and well-ventilated warehouse with an ambient air temperature of -5 to +40℃ and a relative humidity of no more than 90%. The air must not contain corrosive gases.
Xin Kui Lu
JB/T3758
Lai 880b1230
19XXXX Ridge
100044
Wan Duan X/X
Zhang JuXXX,XXX
19XX Collection XX Cabin
Leng X Dai
De pxXX.XX Wing
Xian Ji Ou Hai
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