How to test the rated load of wire rope electric hoist

　　Below we summarize five points:

　　1) Measurement of the lifting speed of wire rope electric hoist. At rated frequency, rated voltage, and rated load, when the lifting distance exceeds 05m, use a stopwatch to control the time, measure the lifting distance within 10s, or take a fixed distance, measure the required time, calculate the lifting speed, and take the average of the four measurements.

　　2) Noise measurement of lifting mechanism: At rated frequency, rated voltage, and rated load, the starting point for distance measurement is the maximum overall size of the entire machine on the test bench, and the measurement points are arranged on parallel lines extending outward from the starting point. The distance between the measuring point and the reflecting surface and other objects should not be less than 1m, and the distance from the wall corner should not be less than 2m.

　　3) Measurement of the braking sliding distance of the electric hoist with a steel wire rope: Under the rated frequency, rated voltage, and rated load, the braking sliding distance for stable descent is measured. Generally, a small thallium is lifted with a thin steel wire rope, and a fixed position is used. Alternatively, the relative position between the drum and a certain point on the shell can be used to measure the sliding distance. The average value is taken four times in a row.

　　Record voltage and current.

　　5) Voltage reduction test: Under rated load, the wire rope electric hoist is placed on the test bench and subjected to voltage reduction according to the specified voltage reduction index in the grading standard. That is, the voltage at the motor inlet is adjusted to the specified voltage reduction index before the test. You are trustworthy in Beijing Lingying's professional information.