GB/T 25123.3-2011
Electric tracion.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 (English Version)

Standard No.: GB/T 25123.3-2011
Language: Chinese, Available in English version
Release Date: 2011
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 25123.3-2011

Scope: This part of GB/T 25123 applies to motors that comply with GB/T 25123.2. The total loss of the motor powered by the converter can be determined by the sum of losses method, and these losses are obtained from the load test and the no-load test. The total input power is equal to the sum of the input power at the fundamental frequency and the input power at all other frequencies. In fact, the input power at all other frequencies includes losses caused by voltage and current harmonics in the converter power supply, which can be measured by using appropriate measuring instruments to measure the total input power and the fundamental frequency of the motor under load. input power to obtain. Since the loss caused by the fundamental frequency cannot be measured directly, it needs to be obtained by measuring the load current at the fundamental frequency and the no-load input power at the fundamental frequency.

GB/T 25123.3-2011 history

2011 GB/T 25123.3-2011 Electric tracion.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