Id = ki line

Luoyang mechanical and electrical school, electrician class, students need equipment for practical training, including: screwdriver, electric pen, multimeter, wire stripper, needle-nosed pliers and so on. Electrician's actual combat class has always been based on actual combat every day, and teachers teach in small classes.

VD=IDR

Where, ID—— is the DC current required for energy consumption braking.

VD-DC voltage required for energy consumption braking.

R- resistance between any two of the three incoming wires of the motor.

K-coefficient, 3.5 ~ 4. Considering the heating situation of the motor winding and making the motor have satisfactory braking effect, the coefficient k is a multiple of the excitation current; The upper limit of coefficient k can be used for high-speed and high-penetration transmission devices.

When designing or selecting a rectifier power transformer, you can choose a transformer with a tap of 10%. According to the above formula, if the motor penetration is not large, the braking time is generally less than 2S.