The motor test equipment includes test power supply equipment, distribution equipment, test bench and installation equipment, load equipment, measuring instruments and meters for various test parameters, as well as test data processing and calculation equipment. These devices are combined into a complete motor test system.
1, Motor test power supply equipment
The power supply equipment for motor testing includes power transformers, voltage regulators, frequency converters, AC generator sets, frequency converters, etc.
A power transformer is a power equipment that converts high-voltage electricity transmitted by the power grid into commonly used low-voltage electricity. It can be divided into single-phase and three-phase, dry-type and oil immersed, self cooling and air-cooled.
A voltage regulator is a device that regulates voltage, and its voltage ratio can be continuously changed as required during operation.
A frequency converter is a variable frequency power supply device composed of electronic components that can convert a fixed frequency AC power into an adjustable frequency AC power.
AC generator sets can be divided into AC single frequency generator sets and variable frequency generator sets. Variable frequency generator sets can be used as test power sources for motors of different frequencies, mainly for accompanying test motors during temperature rise and load tests.
2, Motor test load equipment
The main electrical quantities that need to be measured in motor testing include current, voltage, frequency, power, power factor, resistance, inductance, etc. Most of the electrical quantities are divided into two categories: DC and AC.
The commonly used motor testing instruments and meters generally include ammeters, voltmeters, power meters, phase meters, resistance meters, and frequency meters. According to different testing requirements, there are significant differences in testing instruments and meters. Traditional pointer instruments are gradually being phased out due to factors such as accuracy, analysis, and display. With the widespread application of variable frequency motors, high-precision power analyzers have also begun to be widely used for electrical measurement in motor testing, providing increasingly accurate data for motor testing.
3, Motor test measuring instruments and meters
The main electrical quantities that need to be measured in motor testing include current, voltage, frequency, power, power factor, resistance, inductance, etc. Most of the electrical quantities are divided into two categories: DC and AC.
The commonly used motor testing instruments and meters generally include ammeters, voltmeters, power meters, phase meters, resistance meters, and frequency meters. According to different testing requirements, there are significant differences in testing instruments and meters. Traditional pointer instruments are gradually being phased out due to factors such as accuracy, analysis, and display. With the widespread application of variable frequency motors, high-precision power analyzers have also begun to be widely used for electrical measurement in motor testing, providing increasingly accurate data for motor testing.
4, Motor test data processing and computing equipment
The data processing and computing equipment for motor testing is mainly responsible for the integration and analysis of data measured by various testing instruments and meters in motor testing, as well as the generation and printing of reports. Developing upper computer software on a computer is currently the main data processing and calculation method, which can develop a complete experimental control and display interface according to user needs, making it convenient for operators to use.