Some standard content:
GB/T 5171—2002
This standard is the general technical conditions for small power motors. It specifies the basic performance and technical requirements for small power motors. This standard adopts the relevant provisions of GB755—2003 for the quota and performance of 0% rotating motors. This standard is a revised version of the national standard G/T5171-1991 "General Technical Conditions for Small Power Motors 3". The following important technical differences are found:
- Considering the increasingly strong requirements for the electromagnetic compatibility performance of various electrical appliances, a chapter "Electromagnetic Compatibility" is added. Considering the importance of product safety, GB12350-2000 "Safety Requirements for Small Power Motors" is added to the referenced standards.
In order to meet the needs of rapidly developing production and technological progress, this standard also makes some new provisions and explanations. This standard replaces GB/T5171-1991 from the date of its entry into force. This standard is proposed by the China Electrical Equipment Industry Association. This standard is under the jurisdiction of the Small Power Motor Sub-Technical Committee of the National Rotating Electric Machine Standardization Technical Committee and is responsible for its interpretation. This standard was first issued in 1985, revised for the first time in 1991, and revised for the second time in 2002. The drafting unit of this standard is: State Electric Science Research Institute. The main drafters of this standard are: He Xiangji and Lin Ronghua.
1 Scope
National Standard of the People's Republic of China
General technical requirements for small power motors
General technical requirements for small power motors This standard specifies the general technical requirements for small power motors. GB/T 5171—2002
Replaces G17—
This standard applies to asynchronous motors, synchronous motors, DC motors and AC-commutator motors whose continuous rated power does not exceed 1.1kW when converted to 15901/mi2. Special requirements for each type of motor and other requirements specified in this standard should be specified in the product standards for each type of motor. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. The versions shown are valid at the time of publication of this standard. All standards are subject to revision. Parties using this standard should consider the possibility of using the latest version of the following standards. GB/T191-2000: Packaging, storage and transportation pictorial mark (eg[S()780:1997) GB/T321-1980 Priority number and priority number system GB7552000 Rated performance of rotating motor (idt.IEC600311:19963 GB/T1032-19 Weak asynchronous motor test method CB/T1311-1935 Current motor test method (m91FFF113:1973) GF1971--1980 Motor line terminal marking and rotation method GB/T2423.3-ES93 Basic environmental test regulations for electric products Cn: Steady damp heat test method (etV IEC 600G8-2-3:1384)
GB/T 2423.4—1993 Basic environmental test procedures for electrical and electronic products Test Dh: Cyclic damp heat test method (eqvIEC 60068-2-30:1980)
Cyclic shuttle test counting cat sample loss sequence and table (applicable to the inspection of production process stability)GH/T 2829-2002
GB4343-1995 Household and similar electric appliances, electric heating appliances, electric tools and similar electrical appliances - Single-phase test method and allowable values for radio interference characteristics (eVCISPR1:1993) GB/4942.1-20(F1 Rotating electrical machines - External protection classes (IP code) (c0VIEC60C34.5:1981) G1/8128-1937 Single-phase asynchronous motor test method (negIFCGC034-1:1983) GB/T9651-1988 Single-phase asynchronous motor test method GB10068-2000 Measurement, evaluation and limits of mechanical dynamic vibration of motors with a center height of 56 mm or more (idt IEC c0034-14:1996)
GB/T10069.1—1988 Noise determination method and limits for rotating electrical machines Noise measurement method (neg1S0)1630-1:1986)
1 Simple noise determination method (neaISO168c2:GB/T 1U669. 2: 1988
Noise determination method and limits for rotating electrical machines
GR1235--2000
, Safety requirements for small power electric motors
Approved by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China on 2002-08-05 Implementation on 2093-04-01
GR/T 51712002
G2665-19 Specifications for thermal test of high-efficiency motors under general environmental conditions JL/T951119 Test methods for small power synchronous motors JB/9613:-2300 Insulation test method for AC low-voltage motor loose-wound windings 3 Operating conditions
3.1 Environmental conditions
3.1.1 Altitude
The altitude shall not exceed 1000m
When the altitude of the operating location exceeds 1HCm² or the ambient air temperature of the operating location decreases with the increase of altitude, the provisions of 6.4 shall be followed. 5.1.2 Environment (maximum temperature) The maximum temperature of the environment at the operating point should not exceed 3.1.3 Environment (humidity) The average maximum relative humidity of the air at this point should be 93°C. At the same time, the average minimum relative humidity of the air should not exceed 25°C. 3.2 Electrical conditions 3.2.1 Voltage deviation When the voltage (such as AC excitation, the frequency is rated) does not deviate from the rated voltage by more than 10%, the motor should be able to run continuously and its output torque should still be able to maintain the rated torque. When the voltage deviates from the rated value, the motor performance is allowed to be different from the standard, and the temperature rise value is allowed to exceed the provisions of Table 3. The value should be within the standard provisions of the motor type. When the voltage reaches the above limit and the motor is running continuously, the maximum allowable value of the temperature rise limit is longer. 3.2. 2.2.2.2 When the frequency (voltage is rated) deviates from the rated value by less than 0.01%, the AC motor shall be able to run continuously and its output torque shall still maintain the rated value. 3.2.3 When the voltage and frequency deviate at the same time (the two deviations do not exceed ±5% and ±2% respectively), if both deviations are positive and the sum of the two does not exceed 7%, if both deviations are negative or positive and negative respectively, the sum of the average and absolute values does not exceed 5%, the AC motor output torque shall still be able to maintain the rated value and run continuously. Performance and temperature rise shall comply with the provisions of 5.2.1. 3.2.4 When the voltage and frequency deviate from the rated value by more than the above range, but the sum of the two is less than 3% when the deviation is in the same direction, or the sum of the absolute values of the two is less than 3% when the deviation is in the opposite direction, the motor can maintain the rated speed. In actual use, if the motor is required to operate under this condition, the value, duration and occurrence order shall be limited. 3.2.5 A single-phase AC motor shall be able to operate in one phase and the negative sequence component of the system voltage shall not exceed 1% of the positive sequence component ( Long-term operation), or differential operation of no more than 1.5% and no more than 10 minutes) H The zero component does not exceed the positive component 1.4 Working system and quota
Working system and quota shall be in accordance with the provisions of GC755.
5 Rated value
51 Rated output power of the motor () is expressed as rated torque (N:·m): The rated torque is used as the rated energy to ensure the output power (W? Speed (S·m)% Speed lower limit (r/min) X2/6U) 5-1.1 The rated power should be selected according to the following provisions: G.4, 0, 6, 1.C, 1.6, 2.5, 4, 5, 10, [6, 24, 40, 60, 90, 120, 181, 350, 370, 550, 70. 1100, ! 501, ? 200W, and the matching parts need to be formulated. 5-1-2 The rated voltage should be selected according to the R20 series of GBT billion. 5.2 The rated frequency of the AC motor is 50H% 5.3 The rated light:
GBT 5172002
DC motor: 36.1921.36.18, 6, 115.220Single-phase AC motor: 12.24.36, 42, 110, 711), 220230)-phase AC motor: 36.42, 220, (230), 330, (400)VFor H-type special motors, the following provisions may be made according to special needs: 5 Temperature rise
5-1 Parts during temperature rise test
5-1.1 Cooling medium temperature during temperature test
The motor can be tested at an appropriate cooling medium temperature. If the difference between the cooling medium temperature at the end of the test and the cooling medium temperature specified at the test location is greater than 30K, the temperature limit should be adjusted according to the provisions of 6.5. 6.1.2 The measurement of the cooling medium temperature during the temperature rise test should be the average value of the thermometer readings measured at equal intervals during the test process as the cooling medium temperature for the temperature rise test.
If the cooling medium is air, the temperature can be measured by thermometers distributed around the motor. The thermometer is placed at (1~2)m from the motor. The position of the ball is half of the motor housing height. The heat radiation effect on the power supply should be calculated. 6-1.3 The requirements for power supply for temperature rise test should be in accordance with the provisions of (B755): 5.2 Determination of temperature rise
6.2 .1 Temperature rise of a certain part of the motor
The temperature rise of a certain part of the motor is the difference between the temperature of the part measured by the appropriate method specified in 6.2.2 and the temperature of the cooling medium measured in accordance with 6.1.2.
5.2.2 Temperature measurement method
There are two methods for measuring the temperature of the motor assembly and other parts, the resistance method and the thermometer method. Under technical conditions, superposition can be used, but the magnitude of the superimposed current during the test shall not exceed 1% of the current of the tested motor. 5.2.2.1 Electrical method
The resistance method determines the temperature of the winding by the relationship between the true current of the winding and the corresponding increase in resistance when the temperature rises. What is measured is the average temperature of the winding: When the electrical method is used to measure the temperature of the winding, the continuous temperature measured by the thermometer before the test actually becomes the cooling medium temperature
The humidity rise of the winding can be determined by the following formula:
At F(K -R / R.234. --t,/ -1t, where: · Temperature rise of European standard group.K
R, Winding resistance at the beginning of the test:
I: Total resistance at the end of the test;
-- Winding temperature change at the beginning of the test
... Dielectric temperature at the end of the test,... For: Tube winding, use 22 to replace 234 in the formula, 6.2.2.2 Thermometer method
The thermometer used includes expansion thermometer (such as mercury, alcohol, etc.) single conductor thermometer and non-Richard thermocouple or electric thermometer, and the thermometer is attached to the In order to measure the temperature difference between the contact point and the measuring point, the heat conduction of the thermometer should be as good as possible. The measuring point and the measuring part should be covered with insulating materials. In the section where the motor has an alternating magnetic field, the water-like thermometer cannot be used.
6.2.3 Correction of the temperature value measured after the motor stops. After the motor stops, the temperature should not exceed 5. The winding resistance reading is used as the value of the measured value. If it exceeds 5, it should be corrected according to the provisions of (B755).
6.2.4 Continuous test of the humidity rise of each motor GB/T 5171-2002
6.2.4.1 Maximum continuous rated (or S1.L system) motor test is carried out until all parts of the motor reach a thermally stable state. 6.2.4.2 Short-term rating (52 working system) The test duration of the motor is the time limit specified in the rating. At the beginning of the test, the temperature difference between the motor humidity and the cooling medium should be within 5K. At the end of the test, the temperature should not exceed the limit specified in 6.3.4. 6.2.4.3 Cycle rating (or S3~S8 working system) The motor should be continuously operated according to the specified load-cut cycle for intermittent load until the actual phase humidity cycle is reached. The judgment is: connect the corresponding points on the two working cycles into a straight line, and its thickness should be less than 2K/. If necessary, it should be measured at appropriate time intervals within a period of time. Quantity: In the last ~ operating cycle, the temperature rise when the maximum heat is generated for half of the time should not exceed the value in Table 3. 6.2.4.4 Non-periodic temperature rise test (S9T working system) The motor temperature rise test shall be carried out according to the equivalent continuous rating formulated by the manufacturer. 2.4.1 When formulating the equivalent continuous rating, it shall be based on the S9 working system proposed by the user taking into account the changes in the rated load and speed and the allowable overload degree. 6.2.4.5 Motors with multiple ratings
The temperature rise test of motors with multiple ratings shall be carried out at the rated value that can produce the highest temperature rise. 6.3 Limits of temperature and gain rise of various parts of the motor 6. 3.1 When the motor is rated for operation under the environmental conditions specified in 3.1, the temperature and temperature rise limit of each part of the motor shall comply with the provisions of 3.3.
6.3.2 The bearing temperature measurement method shall comply with the relevant provisions of GB755-5.3.3 For short-time rated motors, the temperature rise limit of each part is allowed to be increased by 1C:K5 compared with the values specified in Table 1. 3. L For non-periodic rated motors based on S working system. During operation, the temperature rise is allowed to exceed the limit values in Table 1.
Motor parts
Day motor system
2 Insulation components of permanent short circuit
Iron core and other parts in contact with winding
Commutator
Resistance method
i Resistance cloud
Insulation grade
[Resistance method
Resistance method
Efficiency less than 60 For AC motors, when A, B, F and H grade insulation is used, the temperature rise limit can be increased by 5 K compared with the table. The temperature limit of the commutator should be consistent with the insulation grade used by itself. If the commutator is close to the insulation group, the surface temperature should not exceed the allowable limit of the insulation grade used by the insulation group. The temperature rise should preferably be measured by a thermoelectric thermometer with a small thermal constant. For motors with a power of 100 GW and below, the temperature rise of A, E and R grades can be increased by 15 K; F and H grades can be increased by 15 K. K. 3 For motor windings with A, BE and F grades, the temperature rise limit can be compared with the resistance method by superposition method. 6.4 When the operating conditions are different from the specified temperature limit, the correction of the temperature rise limit when the operating conditions are different from the specified temperature limit shall be in accordance with the provisions of CB755: 6.5 Correction of the temperature rise limit when the test location is different from the altitude of the test location. When the ambient air temperature is different from the operating location, the correction of the temperature rise limit shall be in accordance with the provisions of CB?55. 21
GB/T 5171: -2002
7.1 The efficiency of a motor refers to the ratio of its mechanical power input rate to its active power input rate, usually expressed as a convex fraction. 7.2 The efficiency is determined by the direct method (dynamometer is recommended). Note: When the direct method is used to determine the efficiency, the motor test shall comply with the temperature rise test duration. The motor output power and active power input power are measured to determine the efficiency. 8 Dielectric performance test
The dielectric performance test of the motor includes insulation resistance, winding to ground and insulation voltage test. 8.1 Insulation resistance of windings
The insulation resistance of the motor unit shall not be less than M in the energized state and not less than 1M0 in the hot state. The insulation resistance is measured with a megohmmeter! The voltage is in accordance with the provisions of Table 2. The motor is rated voltage. 86-0-.30: 8.2 Withstand test 8.2.1 General requirements for the test The insulation resistance of the winding should be measured before the test. If the over-torque test or accidental over-current test is required, this test should be carried out after these tests. If the temperature rise test is required, it should be carried out immediately after the temperature rise test. The test should be carried out when the motor is stationary. The test voltage is applied between the tested winding and the housing and between the winding phases. For multi-phase windings connected to each other, if the terminals are not separately led out, they can be tested as a separate circuit. 8.2.2 Test voltage The frequency of the test voltage is 50Hz, the waveform is an actual sine wave, or the test equipment is less than 0.kVA, and the test voltage (effective value) is 100! 2, but the minimum is 150V. For motors with a rated voltage of less than 4V and powered by a separate power source (such as a central fan or a battery, etc.), the test voltage (effective value) is 50V, and the tripping current during the test should not be greater than 10mA. After the hot test, the current should not be greater than mA.
8.2.3 Test time
During the test, the applied voltage should start from no more than half of the full value of the test voltage, and gradually increase to the full value of the test voltage. The time for the test voltage to increase from half value to full value should be no less than 1G, and the full value voltage reduction test time should last for 10min. When the inspection test is carried out in large-scale production, it is allowed to use 12% of the test voltage in 8.2.2 for a period of time. The test voltage should be applied by the test rod at the test point. 8.3 Repeated withstand voltage test
is also required. This test should not be repeated during acceptance. If the user requires it, it is allowed to carry out the withstand voltage test again. The test voltage should be 8.2.2. If necessary, the motor should be dried before the test. 4. Interval insulation test
Multi-turn coils or windings should be subjected to random insulation test to assess the ability of the system to withstand overcurrent. The test can be carried out by using the impulse withstand voltage test or short-time rising current test. 4.1 When using the impulse withstand voltage test, the requirements and test methods shall be carried out in accordance with J3/T9615.1. 8.4.2 When using the short-time rising current test, the motor shall be subjected to 13 rated voltage. The motor shall be free of 3m high-frequency phenomenon. During the test, the power supply frequency is allowed to be increased to 110% of the rated value (except for the running machine): 2::
9 Wet heat test
GB/T 51/1 2002
9.1 New motor damp heat test shop full scale 15:126 current quantity 9.2 Source heat test method G/12423.3 provisions - test cycle number 2 professional products if necessary, can be connected to 2423.4 hot test + test cycle number d10 Various characteristics
10.1 Starting performance
10.11 Single speed asynchronous motor locked rotor maximum torque, maximum speed to rated speed ratio, under rated voltage and rated power should not be too large Kaiding
It-. PeI hu
1 500-72-2 500
Stick to the rotating part
Rated speed
Rated speed
Ding Daxiong
Rated speed certificate
10.1.2 For the single-stage motor running at blocked speed, the minimum speed shall be within the rated speed limit: at rated speed and rated frequency, the regulation of no more than 1 minute is required.
Electric equipment
Single-phase resistance start asynchronous motor
Single-phase capacitor start asynchronous motor
Single-phase effective value parallel stepping motor
Prime operation asynchronous motor
Single-phase single-phase asynchronous motor
Transmission and other devices
Specified teaching edition
Dare to proofread according to
Yan Shuo conversion
10.1.3 The locked-rotor current of the single-step motor or the ratio of the locked-rotor current to the rated current is specified in various electrification standards. 10.1.4 The starting ratio of other size motors and special-purpose asynchronous motors is also specified in various electric standards. 10.1.5 When calculating the ratio of the locked-rotor current to the rated current of an asynchronous motor, the rated current used becomes the rated power. The efficiency and power factor guarantee requirements are not included in 10.1.6. The ratio of the minimum speed to the rated speed shall not be less than the value shown in the table under the rated frequency, voltage and rated power.
Standardized type
Chinese electric motors
Single-phase double-phase capacitor-fired stepping motors
Three-phase hydraulic stepping motors
GB/T 5171
Stuck-rotor condition
New standard
Standardized speed
101.7 Under rated current and rated frequency, the ratio of the two rated speeds of the stepping motor with a load of 1.2 times the nominal inertia is 1.2 times the nominal inertia of the load, calculated as follows: J -- 7. 05740.
武中：[--Nominal rotation speed of the load, kz.m\: Rated power of the motor, W:
Synchronous speed of the motor·
10.1.8 The locked-rotor current or the transfer current of a synchronous motor shall be equal to the rated current. In the marking of various types of motors, it is specified in 10.1.9 Other questions about the starting performance of stepping motors and variable-speed synchronous motors. In the starting performance of service type motors, it is specified in 10.1.10 The locked-rotor current of the motor shall be equal to the rated current. The attached rated current shall be the value of the rated power and rated output power (not the difference) to obtain the over-current performance of the motor. In the marking of service type motors, it is specified in 10.1.11
10.1.12
The ratio of the locked-rotor torque of the AC inverter motor to the rated torque shall not be less than the ratio shown in Table 6 at rated voltage and rated frequency.
Min
Name
Rated torque
Hernr2no
Product
10.1.13 The ratio of the locked-rotor current of the inverter motor to the rated current. The standard for secondary motors stipulates that at rated voltage and rated frequency, the ratio of the locked-rotor torque of the single-phase synchronous motor to the rated torque shall not be less than: 10.3 The ratio of the locked-rotor torque of the AC inverter motor to the rated torque shall not be less than 10.10.3 The motor can withstand the small overspeed test shown in the table in the hot state without stalling or deformation. At this time, the voltage and frequency (for AC motors) The rated value should be maintained. For point-to-point electric motors, over-torque can be indicated by over-current.
Motor type
Three-phase abandoned motor
Terminal air-start asynchronous motor
Know the short-term test torque value
Motor type
Single-phase effective value asynchronous motor
Single-phase and capacitor running and stepping motor
Stepping electric sink
DC motor
AC commutator motor
10.4 Overspeed
GB/I 5171-2002
Bag (finished)
Overspeed at 100°C (exceeding the lower fraction of the new rated torque) IC
Each type of motor should be able to carry out the over-test specified in Table 3 for 2 minutes without causing harmful deformation. For wound rotor motors, they should be able to withstand the requirements of the electrical withstand test during the test. Table
Motor type
AC commutator motor
: DC motor
Direct excited or separately excited electric cylinder
Speed adjustment rate is less than 35%bzxZ.net
Compound motor
Intermediate excited motor and continuous exciting motor with adjustment rate of more than 35%
Hydraulic magnetic motor The motor
10.5 accidental overcurrent
overspeed monitoring
1.1 times the rated speed of the medium pressure, for the motor that can be separated or separated - no-load speed refers to the speed when the lightest load
1.2 times is the rated actual speed or 1.1 times the no-load speed. The higher of the two is 1.2 times the maximum rated speed or: 1.15 times the no-load speed, whichever is higher, but not more than 1.5 times the rated speed
Except for the motor that can withstand 1.1 rated current no-load speed, it should be 1.1 times the maximum speed of safe operation. The highest speed of safe operation should be indicated on the nameplate. The provisions of this table
1. 10.5.1 Three-phase AC motors should be able to withstand 1.5 times the rated current and not less than 2 in. for single-phase motors, accidental overcurrent protection is not required.
10.5.2 DC and AC commutation motors shall be able to withstand 1.5 times the rated current for not less than 10.5 seconds at the highest full-field speed and corresponding voltage.
11 Commutation
DC and AC commutation motors shall be able to operate from no-load to the overcurrent and overload specified in 10.3 and 11.5 respectively without generating harmful sparks, causing permanent damage to the commutator or the switch surface, and maintaining the same position during operation. If a temperature rise test is required, the commutation test shall be carried out immediately after the temperature rise test, and the duration of the test shall be as specified in the standards for various types of motors.
12.1 The noise values of motors are divided into four levels: V, ordinary, R, -), S (excellent) and E (low noise). If not otherwise specified, the noise level of the motor shall comply with the N level value. 12.2 The noise value of the weighted output power level of asynchronous motors, stepper motors and DC motors (at rated speed) at no-load should comply with the provisions of Article 3, and specific grade requirements should be specified in the standards for various types of motors, 240
Bearing category!
Rolling auxiliary bearing
Moving shaft vertical
Synchronous speed
150-1 0(10
1 00-ng1 500
1 5cons 000
3OR 00
5 o0-.8 000
1 500 n3 010
3 000<.n.:5 0c0
5 000-n-58 056
8 0G0-. ne12 00
I0Pn4)
180-750
Sound power level/uBA
751-P,=1 50U
810-.F4.2 90
GB/T 5171
GB/T 51/1--2002
12.3 The maximum allowable value of the A-weighted noise level of the AC converter motor at no-load at rated speed is 12.
12.4 The determination of the motor noise shall be carried out in accordance with the relevant provisions of 13/T10069. Table
Data speed
Tiuniri
: 000.ng.i t0.
3 030-y H Duti
8 c.on.n: 12 1
1 000n18 (:
2 18 30G
13 Vibration
Rated power/W
30 r st
1371k37:
Rate A
The vibration limit of the asynchronous motor with missing or short-circuited structure at no-load shall comply with the provisions of Table 11. 13.1
Construction type
Three-phase asynchronous motor
Single-unit asynchronous motor
Kangdong delivery effectivenn!
The vibration limit of the asynchronous motor under load is determined in the standard of this type of product. fa.37
The vibration limit measured when the alternating current commutation motor is running steadily at no-load at rated speed shall comply with the provisions of Table 12. 13.2
Table 12
Ouonn c0r
ann12 n
12 33- nn4 [8 uc0
The vibration limit of the synchronous motor at no load shall comply with the provisions of Table 1. Table
New motor type
One-way stepper
Single-step electric
Diameter/mm
Effective speed (m%)
(. The standard specifies
The same as the speed/:/min
Effective speed
13.4 The vibration limit of other types of electric motors shall be specified in the motor standard, 25
GB/T 5171 2002
13.5 The vibration measurement of the motor shall be carried out in accordance with the relevant provisions of G1310868.14 Safety
The safety performance requirements of various types of motors shall be in accordance with the provisions of GB12350.15 Electromagnetic compatibility
The radio interference level of the quick-interrogator motor or the motor with electronic control device shall be evaluated and the test method shall be specified in accordance with G1313-13.
Working life
The working life of the motor refers to the period of normal operation guaranteed by the factory and the user under the specified conditions. The working life of the motor is measured in hours.
76.1 When the working life of the motor is shorter than years, the working life shall be specified in the standard of the motor of this type.16.2 The methods and requirements for the working life test shall be specified in the standards of various types of motors. 17 Tolerance
The actual measurement and the allowable deviation in the standard are only confirmed by taking into account the different performance of raw materials within the permitted range, processing deviations and measurement errors and other avoidable effects. The items listed in Table H are only used as guaranteed values in the standard for various types of motors. The product tolerances must be listed at the same time. If the table specifies higher tolerance requirements, the provisions of Table 14 shall be followed. When the tolerance in Table 11 is accompanied by only one symbol (such as "=\ or ".\>), the tolerance of the other side is restricted!
Bag 14
Respect the emperor
Power factor of AC motor ||tt| Speed or slip (at rated load and temperature) of permanent magnet DC motors. Speed of DC motors. Speed of other DC motors. Speed of inverter motors. Slip of motors. Torque of asynchronous and step-up motors. Minimum speed of step-up motors. Nominal speed of synchronous motors. Generally, 1. 32 - 5 Table - 5.07 [W (or VA above Shenzhen Stock Exchange value + 2 [kw or VA: below guaranteed value = 30 [5: -25% of guaranteed value] only if required> This is only if the capacity is taken into account. However, the guaranteed value -13% of Shenzhen Stock Exchange value is 15\
1. 32 - 5 Table - 5. 07
【W(or VA above Shenzhen Stock Exchange value +2
[kw or VA: below guaranteed value =30
guaranteed value
guaranteed value one [5: -25% positive capacity planning instrument all need to be specified>
to prove this
but taking into account the visual
guaranteed value -13%
Shenzhen Stock Exchange value 15\
1. 32 - 5 Table - 5. 07
【W(or VA above Shenzhen Stock Exchange value +2
[kw or VA: below guaranteed value =30
guaranteed value
guaranteed value one [5: -25% positive capacity planning instrument all need to be specified>
to prove this
but taking into account the visual
guaranteed value -13%
Shenzhen Stock Exchange value 15\
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