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GB/T 25123.3-2011 English PDF (GB/T25123.3-2011)
GB/T 25123.3-2011 English PDF (GB/T25123.3-2011)
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GB/T 25123.3-2011: Electric traction -- Rotating electrical machines for rail and road vehicles -- Part 3: Determination of the total losses of convertor-fed alternating current motors by summation of the component losses
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Scope
This Part of GB/T 25123 applies to machines that comply with GB/T 25123.2.The total losses of a convertor-fed motor may be determined by summation of the
component losses derived from no-load and load tests. The total input power is the sum
of the power at the fundamental frequency and at all other frequencies. In all practical
cases the latter input includes the losses resulting from the voltage and current
harmonics in the convertor supply by using suitable instrumentation it can be derived
from measurement of the total and fundamental frequency power inputs when the
machine is on load.
The losses supplied at the fundamental frequency cannot be measured directly and so
are derived from measurement of the fundamental frequency load current and the
fundamental frequency no-load power input.
Basic Data
Standard ID | GB/T 25123.3-2011 (GB/T25123.3-2011) |
Description (Translated English) | Electric traction -- Rotating electrical machines for rail and road vehicles -- Part 3: Determination of the total losses of convertor-fed alternating current motors by summation of the component losses |
Sector / Industry | National Standard (Recommended) |
Classification of Chinese Standard | S35 |
Classification of International Standard | 29.280 |
Word Count Estimation | 15,141 |
Date of Issue | 2011-12-30 |
Date of Implementation | 2012-06-01 |
Adopted Standard | IEC 60349-3-1995, IDT |
Regulation (derived from) | National Standard Approval Announcement 2011 No.22 |
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 applies to comply with GB/T 25123. 2 motor. The total loss of motor power inverter available method to determine the total losses, these losses obtained from load tests and load tests. The total input power is equal to the fundamental frequency of the input power and the input power of all other frequencies and. In fact, all other frequencies, including the loss of input power from the inverter power supply voltage and current harmonics generated which can be used by an appropriate measuring instrument, the total input power and the fundamental frequency of the measurement of the state of the motor load input power to obtain. Because of the loss arising from the fundamental frequency can not be measured directly, and therefore need to be obtained by measuring the fundamental frequency of the fundamental frequency of the load current and no-load input power. |
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