Dalan Motor teaches you 5 ways to accurately measure the starting current of the hydraulic oil pump motor, close it!

The starting current refers to the inrush current of the electrical equipment at the start, it is the amount of current change from the moment when the motor or inductive load is energized to the smooth operation. Today, the editor of Dalan Motor teaches you how to measure the starting current of the hydraulic pump motor. method.

According to national regulations, for the safety of line operation and the normal operation of other electrical equipment, high-power motors must be equipped with starting equipment to reduce the starting current.

The process of motor start-up is a dynamic change process. In the actual test process, if you want to test accurately, generally use a high-sampling rate waveform recorder or a test instrument with waveform recording function to complete. The high-sampling rate test instrument records the measured power and draws transient waveforms or trend curves. Generally, the following test methods are used:

(1) Use an oscilloscope to measure-install a relatively large transformation ratio (can be selected according to the power of the motor or the parameters provided by the manufacturer) in the motor start circuit. The secondary winding of the current sensor is connected to the oscilloscope to complete measuring.

(2) Use a fault recording device to measure-install a current sensor in the motor starting circuit, the secondary winding of the current sensor is connected to the fault recording device, and start the recording during the motor starting process to measure.

(3) Use a portable power quality analyzer to measure-install a current sensor in the motor start loop, and the secondary winding of the current sensor is connected to the portable power quality analyzer to measure during the motor start process.

(4) Test with a high-end motor test system-by setting parameters such as dynamometer sensor transformation ratio and synchronization source, the starting current can be effectively tested.

(5) Measure with power analyzer-Power analyzer is a universal testing instrument and a necessary component of modern motor test bench. It can accurately test all parameters of the motor with high precision.




----- Responsible Editor: Dalan Oil Pump Motor 02-Procurement Consultant

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