Mining motor comprehensive test bench

Our company has developed a motor testing bench in cooperation with motor manufacturers to meet market development requirements. The motor test bench can perform various tests on motors, including no-load power, three-phase voltage, no-load current, active power, reactive power, speed, temperature rise, vibration, and motor short circuit testing.

Mining motor comprehensive test benchFor the maintenance team of mining motors, measure 380V, 660V, and 1140V mining three-phase motors for testing. It can perform no-load power, three-phase voltage, no-load three-phase current, active and reactive power, speed, temperature, and short circuit tests on mining motors. Coal mines are major users of motors, and due to their harsh working environment, they are prone to major hazards and high rates of motor damage. Therefore, it is necessary to regularly or after maintenance check some necessary parameters of the motor. Therefore, Topu Electric has cooperated with some well-known motor manufacturers to develop a motor performance testing platform in response to market demand, which can produce a series of products according to the special voltage requirements of mining motors.

The entire system is fully automated, computerized, efficient, and designed with anti misoperation safety functions. WINDODWS Chinese interface operation, automatic collection of measurement data, automatic calculation of results, automatic generation of factory test reports and printing output. The measurement control system adopts PLC programming control, especially suitable for occasions with high product requirements and batch testing.

Mining motor comprehensive test benchAlternative name:

Motor test bench, motor test system, motor comprehensive test bench, motor comprehensive test system, AC motor comprehensive test bench, DC motor comprehensive test bench

Product features:

Basic components of the experimental system

The experimental system consists of a test power supply, a power switch cabinet, a signal sensing device and power measurement equipment, an automated test measurement unit and control console, an AC motor test software system, a database system, and other components. The load equipment in type testing can be selected according to user requirements, including accompanying motors (including DC generators, AC generators, wound rotor motors), eddy current dynamometers, magnetic powder dynamometers, magnetic powder brakes, and other equipment to meet the type testing needs of different motors.

Measurement method: using microcomputer measurement

The measurement cabinet is equipped with current and voltage sensors, and a signal conditioning interface module is used in the intermediate stage. The computer completes the signal acquisition and measurement tasks.

Control method: Directly controlled by automotive grade MCU

Adopting Siemens' automotive grade microcontroller for chain control, the chain program can be customized and modified according to user requirements, and the control system has stable performance and good scalability.

Operation mode: coexistence of manual and automatic operation modes

To avoid the impact of microcomputer failure on the test work, a combination of manual control (panel button operation) and automatic control (computer keyboard/mouse operation) is used. If automatic control is inconvenient or the microcomputer fails, manual operation can be used for the test.

Experimental data processing: The experimental results are saved in the industrial computer or server

The microcomputer test bench is equipped with domestic original industrial computers, and the automatic test result data is directly saved in the hard disk of the test industrial computer. The manually measured data can be manually input into the test software interface and saved in the memory. It provides a local database function and can perform local query and access of test data. It is designed with automatic generation of test reports and provides output printing function (equipped with HP multifunctional laser printer).

High measurement accuracy and good repeatability;

The control system has stable performance and good scalability.

Design Principles

The design principles are reliability, safety, economy, practicality, operability, and maintainability.

Scope of application

Meet rated voltages of 380V, 660V, 1140V, 3300V, 6000V, and 10000V; Factory and maintenance tests for three-phase asynchronous motors with rated power ranging from 1 to 15000kW.

Operating conditions

The rated working temperature of the central control room is+20 ℃, with an allowable range of 0 ℃ to 45 ℃, and the relative humidity of the air does not exceed 85%;

The control room should be kept away from electromagnetic field interference and mechanical vibration to avoid the erosion of corrosive gases;

The ambient temperature in the cabinet area and equipment area is -5 ℃ to+45 ℃, and the relative humidity of the air does not exceed 80% at+40 ℃ and 85% at+25 ℃;

There shall be no excessive dust, acid, salt, corrosive or explosive gases in the air;

The installation altitude shall not exceed 1000m.

Test project

Users can choose the following experimental projects according to their own requirements:

◇ Environmental temperature measurement;

Insulation resistance measurement;

◇ DC resistance measurement (calculating three-phase resistance imbalance);

◇ Power frequency withstand voltage test;

◇ Interturn withstand voltage test;

◇ No load test (calculate three-phase current imbalance)

◇ Locking test;

◇ Loading test;

Efficiency test;

◇ Temperature rise test.

The system completes voltage measurement, current measurement, power factor measurement, power measurement, reactive power measurement, efficiency measurement, frequency measurement, output torque, output speed, output power, temperature rise and other measurements and calculations.

Main technical parameters:

No load, locked rotor, loading test, temperature rise:

Current measurement accuracy: 0.2% FS ± 3d;

Voltage measurement accuracy: 0.2% FS ± 3d;

Power measurement accuracy: 0.5% FS ± 3d;

Calculation of current imbalance: 0.1% FS ± 3d;

Temperature measurement accuracy: 0.5% ± 2d;

Speed measurement accuracy: 0.2% FS ± 3d;

Torque measurement accuracy: 0.2% FS ± 3d;

Power frequency withstand voltage test:

High voltage: adjustable from 0 to 100000V;

High voltage current: 0-3000mA;

Voltage endurance time: 0-9999S;

Interturn impulse withstand voltage test:

Voltage peak value:<30000V, adjustable;

Wavefront time:<0.5us, adjustable;

Insulation resistance measurement

Measurement range:<200G Ω;

Measurement accuracy: 5% FS ± 5d;

DC resistance measurement:

Measurement current:<10A;

Measurement resistance: 0-20k Ω;

Small resolution: 1u Ω;

Calculation of resistance imbalance: 0.1% FS ± 3d;

Measurement accuracy: 0.2% FS ± 3d.