GB/T 5171.1-2014 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 5171.1-2014 | English | 440 |
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Small power motors - Part 1: General technical requirements
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| GB/T 5171-2002 | English | 639 |
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General technical conditions of small power motors
| Obsolete |
| GB/T 5171-1991 | English | 759 |
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General technical requirements for small power motors
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GB/T 5171.1-2014: Small power motors - Part 1: General technical requirements---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT5171.1-2014
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 29.130.39
K 20
Replacing GB/T 5171-2002
Small Power Motors - Part 1.General Technical
Requirements
Issued on. MAY 6, 2014
Implemented on. OCTOBER 28, 2014
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword... 4
1 Scope... 7
2 Normative References... 7
3 Terms and Definitions... 9
4 Operating Conditions... 10
5 Working System and Rating... 11
6 Measuring Instruments for Tests... 12
7 Controllers and Motors... 12
8 Rated Values... 13
9 Requirements for Structure... 13
10 Markings... 13
11 Temperature Rise Test... 16
12 Efficiency... 21
13 Test of Dielectric Properties... 22
14 Leakage Current... 24
15 Damp Heat Test... 25
16 Requirements for Performance... 25
17 Commutation... 29
18 Noise... 30
19 Vibration... 32
20 Safety... 33
21 Components and Parts... 34
22 Electromagnetic Compatibility... 34
23 Service Life... 36
24 Tolerances... 36
25 Inspection Rules... 37
26 Quality Assurance Period... 41
27 Complete Set... 41
28 Selection of Motors... 41
29 Packaging, Transportation and Storage... 41
30 Green Design... 42
Appendix A (informative) Determination of No-load Data Limits of Small Power
Motors through Process Capability Index Analysis... 43
Appendix B (informative) Selection of Motors... 46
1 Scope
This Part of GB/T 5171 specifies the general technical requirements for small power
motors.
This Part is applicable to motors whose maximum continuous rated power does not
exceed 1.1 kW when converted to 1,500 r/min.
This Part is also applicable to other single-phase asynchronous motors with a power
other than the value mentioned above.
The special requirements for various types of motors, and other requirements not
specified in this Part shall be specified in the product standards of the various types of
motors.
2 Normative References
The following documents are indispensable to the application of this document. In
terms of references with a specified date, only versions with a specified date are
applicable to this document. In terms of references without a specified date, the latest
version (including all the modifications) is applicable to this document.
GB/T 321 Preferred Numbers - Series of Preferred Numbers
GB 755 Rotating Electrical Machines - Rating and Performance
GB/T 1032 Test Procedures for Three-phase Induction Motors
GB/T 1311 Test Procedure for Direct Current Machines
GB 1971 Rotating Electrical Machines - Terminal Markings and Direction of Rotation
GB/T 2423.3 Environmental Testing for Electric and Electronic Products - Part 2.
Testing Method - Test Cab. Damp Heat, Steady State
GB/T 2423.4 Environmental Testing for Electric and Electronic Products - Part 2.Test
Method - Test Db. Damp Heat, Cyclic (12 h + 12 h cycle)
GB/T 2829 Sampling Procedures and Tables for Periodic Inspection by Attributes
(apply to inspection of process stability)
GB/T 2900.25 Electrotechnical Terminology - Rotating Electrical Machines
GB/T 2900.27 Electrotechnical Terminology - Small-power Motor
GB 4343.1 Electromagnetic Compatibility Requirements for Household Appliances,
Electric Tools and Similar Apparatus - Part 1.Emission
GB 4706.1 Household and Similar Electrical Appliances - Safety - Part 1.General
Requirements
3 Terms and Definitions
What is defined in GB 755, GB/T 2900.25, GB/T 2900.27 and GB 4706.1, and the
following terms and definitions are applicable to this document.
3.1 Brushless Direct Current Motor
Brushless direct current motor refers to a motor that has no brushes or mechanical
commutator, uses the rotor location detection signal to control each phase winding for
electronic commutation.
3.2 Frequency-change Motor
Frequency-change motor refers to an AC motor that is powered by a variable-
frequency power source and whose operating speed can be adjusted by changing the
frequency.
3.3 Permanent Magnet Synchronous Motor
Permanent magnet synchronous motor refers to a synchronous motor whose magnetic
system contains one or more permanent magnets.
3.4 Motor Controlled by Controller
Motor controlled by controller refers to a motor that needs to run with a controller.
3.5 Maximum Loss Point
Maximum loss point refers to the operating point where the maximum loss is generated
during the process that a motor runs from no load to the rated load point.
3.6 Accidental Over-current Test
Accidental over-current test refers to a test of determining a motor’s capability of
withstanding the specified overcurrent multiples within a specified time.
3.7 Type Test
Type test refers to a test on one or several motors manufactured in accordance with a
certain design to demonstrate that the design complies with certain criteria.
4 Operating Conditions
4.1 Environmental Conditions
4.1.1 Altitude
The requirements for the altitude are as follows.
4.1.2 Maximum ambient air temperature
The maximum ambient air temperature at the operating location varies with the
seasons, but does not exceed 40 °C.
4.1.3 Relative humidity of ambient air
The monthly average maximum relative humidity of the wettest month of the operating
location is 90%, and meanwhile, the monthly average minimum temperature of that
month is not higher than 25 °C.
4.2 Electrical Conditions
4.2.1 Voltage deviation.
When the deviation between the power supply voltage (for AC power, the frequency is
rated) and the rated value does not exceed ± 5%, the motor shall be able to run
continuously, and its output torque shall still be able to maintain the rated value.
When the above-mentioned deviation occurs between the voltage and the rated value,
the temperature rise limit of the motor is allowed to exceed the stipulations in Table 1.
4.2.2 Frequency deviation.
When the deviation between the frequency (voltage is rated) and the rated value does
not exceed ± 2%, the AC motor shall be able to run continuously, and its output torque
shall still be able to maintain the rated value.
4.2.5 Three-phase AC motors shall be able to operate under the condition that the
negative sequence component of the voltage of the three-phase voltage system does
not exceed 1% of the positive sequence component (long-term operation) or does not
exceed 1.5% (short-term operation for not more than a few minutes) and the zero
sequence component does not exceed 1% of the positive sequence component.
5 Working System and Rating
The working system and rating shall comply with the stipulations of GB 755.
6 Measuring Instruments for Tests
6.1 In the motor tests, the accuracy of the electrical measuring meter shall be not lower
than Level 0.5; the accuracy of the instrument transducer shall be not lower than Level
0.2; the accuracy of the speed measuring instrument shall be not lower than Level 0.1;
the accuracy of the torque measuring instrument shall be not lower than Level 0.5; the
accuracy of the frequency meter shall be not lower than Level 0.1; the accuracy of the
dynamometer shall be not lower than Level 1;
6.2 The above-mentioned test-related instruments shall adopt true effective value
measuring instruments.
6.3 In the selection of the instruments, the measured value shall be within 20% ~ 95%
of the instrument range.
6.4 The nominal torque of the dynamometer or torque measuring instrument shall not
exceed 3 times of the rated torque of the motor being tested.
6.5 If there are requirements different from the above, they shall be specified in the
technical conditions of specific products.
7 Controllers and Motors
7.1 When the performance of the motors depends on the matched corresponding
controllers (such as. brushless direct current motor and variable-frequency induction
motor, etc.), in principle, they are considered as a whole. As a system, it shall comply
with the requirements of this Part. In addition, the system shall be subjected to the
various tests specified in this Part.
7.2 For the motors with the controller integrated inside, the motors, as a whole, shall
be subjected to the various tests specified in this Part.
7.3 For the motors with an independent controller, the controller shall have sufficient
output capacity and overload capacity to match the output power of the motors. The
manufacturer shall specify and explain the output capacity and power of the controller
and the motor in the instruction manual.
8 Rated Values
8.2 The rated power (W) shall be selected in accordance with the following rules. 0.4,
0.6, 1.0, 1.6, 2.5, 4, 6, 10, 16, 25, 40, 60, 90, 120, 180, 250, 370, 550, 750, 1100, 1500,
2200; it may also be separately formulated in accordance with the matching demands.
8.3 The rated torque shall be selected in accordance with R20 of GB/T 321 and its
derivative series.
8.4 The rated frequency of AC motors is 50 Hz.
8.5 The rated voltage of the motors is.
9 Requirements for Structure
Product standards shall specify specific protection degrees, cooling modes, installation
modes, installation dimensions and tolerances, etc.
10 Markings
10.1 Requirements for Appearance
The various markings specified in this Chapter shall be able to ensure that they are not
easy to be worn out during the entire service life of the motors.
10.2 Nameplate
10.2.1 Each motor must be firmly nailed or pasted with a nameplate indicating the rated
data and other necessary matters of the motor by the manufacturer on an obvious
location of the motor body. The material and the marking method of the nameplate
shall be able to ensure that its writing is not easy to be worn out during the entire
service life of the motor.
10.2.2 The nameplate of the motor shall include the following contents.
10.3 Marking of Rotation Direction
For motors that are only suitable for operation in one rotation direction, a sign indicating
the rotation direction shall be set up on an obvious location (except for motors whose
windings are permanently connected so that there is only one rotation direction).
10.4 Marking of Grounding
For motors equipped with a grounding device, a sign indicating grounding shall be set
up near the grounding device, and this sign shall not fall off during the service life of
the motors.
10.5 Marking of Winding Outlet Terminal
The marking of winding outlet terminal shall be engraved at the outlet terminal or
indicated with a label sheet and simultaneously engraved on the wiring board in
accordance with the stipulations of GB 1971, but the label sheet shall not be separately
hung.
10.6 Special Markings
For special motors (for example, explosion-proof motors), special markings shall be
added in accordance with the relevant standards.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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