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GB/T 22713-2008: Effects of unbalanced voltages on the performance of three-phase cage induction motor
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| GB/T 22713-2008 | English | 154 |
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Effects of unbalanced voltages on the performance of three-phase cage induction motor
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GB/T 22713-2008
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Basic data | Standard ID | GB/T 22713-2008 (GB/T22713-2008) | | Description (Translated English) | Effects of unbalanced voltages on the performance of three-phase cage induction motor | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K21 | | Classification of International Standard | 29.160.30 | | Word Count Estimation | 8,892 | | Date of Issue | 2008-12-30 | | Date of Implementation | 2009-10-01 | | Adopted Standard | IEC 60034-26-2006, IDT | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 23 of 2008 (No. 136 overall) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the unbalanced voltage three-phase cage induction motor performance. This standard applies to three-phase cage induction motors. | GB/T 22713-2008: Effects of unbalanced voltages on the performance of three-phase cage induction motor
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Effects of unbalanced voltages on the performance of three-phase cage induction motor
ICS 29.160.30
K21
National Standards of People's Republic of China
GB/T 22713-2008/IEC 60034-26.2006
Voltage unbalance
Effect of three-phase cage induction motor performance
(IEC 60034-26.2006, IDT)
Posted 2008-12-30
2009-10-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This is equivalent to using the standard IEC 60034-26.2006 "unbalanced voltage on three-phase cage induction motor performance."
This standard 60034-26 and IEC on technical content.2006 no difference.
The Standard Appendix A, Appendix B is an informative annex.
The standard proposed by China Electrical Equipment Industrial Association.
The standard rotary motor by the National Standardization Technical Committee (SAC/TC26) centralized.
This standard is drafted by. Shanghai Electrical Apparatus Research Institute (Group) Co., Ltd., Shandong Motor Group Co., mountain
West Motor Manufacturing Co., Ltd., Beijing Bi Jie Electric Co., Ltd., Siemens (China) Co., Ltd., Hebei Electric Co., Ltd., on
Haidian Branch Motor Co., Ltd., Zhejiang Electric Co., Ltd. Jinlong.
The main drafters of this standard. Lijun Li, Wang Qingdong, Chen Pu, Zhou Shoulian, Shaohui, Keeping Firmly in Mind Yejin Wu.
This standard is the first release.
GB/T 22713-2008/IEC 60034-26.2006
Voltage unbalance
Effect of three-phase cage induction motor performance
1 Scope
This standard specifies the effects of unbalanced voltage three phase cage induction motor performance.
This standard applies to three-phase cage induction motors.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 21210 single-speed three-phase cage induction motor starting performance (GB/T 21210-2007, IEC 60034-12.2002, IDT)
3 in the motor voltage unbalance performance
3.1 to 3.3 The following describes the effects of unbalanced voltages on the motor performance.
3.1 Current
Negative sequence voltage imbalance produces a rotation of the rotor in the opposite direction of the magnetic field in the motor air gap. Small negative sequence voltage
Components may make the current flowing through the winding voltage much larger than the current equilibrium. Flowing through the rotor cage bars current rated frequency is almost
Frequency of 2 times, so squish effect squirrel cage rotor bar current loss is increased so that the value of the rotor winding is larger than the value of the stator winding losses increase
a lot of.
Unbalanced voltage at the motor rated speed operation, the current imbalance in the degree of large, about six times the voltage unbalance degree ~
10 times.
Voltage unbalance, locked rotor current unbalanced degree of voltage unbalance degree of the same, but stall the apparent value of the power increase is small.
3.2 fever
The motor runs at a voltage imbalance, since the current and voltage in the negative sequence component of the stator caused loss increases, so the stator windings
Temperature rise than in the equilibrium temperature rise Voltage runtime.
The degree of increase in losses due to the rotor squish effect of current and increased.
In addition, the voltage imbalance is usually associated with reduced voltage sequence components related to Chiang Kai-shek, Chiang Kai-shek rotor which makes the current sequence component increases.
3.3 Torque
When the voltage unbalance, stall torque, minimum torque and maximum torque decrease. If the voltage imbalance is very serious, the motor can not
It can operate normally.
Voltage unbalance and frequency of twice the frequency of the oscillation of torque generated about. Increases torque oscillation amplitude of the voltage sequence components and Chiang Kai-shek
25% of the range. When the oscillation frequency torsional torque is nearly 2 times the critical frequency, the entire shafting torsional vibration may cause impermissible.
3.4 full speed
When the motor is running at full voltage unbalance, because the rotor slip with an additional increase in loss increases, and thus the speed at this time
Slightly decreased.
4 derating motor running to prevent overheating
When the three-phase AC motor system voltage frequency power supply is connected, the negative sequence component of long-term (at least for the motor thermal time constant)
GB/T 22713-2008/IEC 60034-26.2006
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