One of the common faults of the winding machine, the winding machine needs to be shut down immediately after the winding machine is broken, and then detected and repaired.

First of all, let's take a look at what happened to the winding machine and how it affects it. When a wire breakage fault occurs in the winding machine, it is called a winding machine open circuit. This is the case of a missing phase in the motor. When the winding machine is disconnected, the motor will have a series of failures. In the slightest case, it will be difficult to start. The three-phase current is unbalanced and there is abnormal vibration. .

(1) Cause

The main reasons for the disconnection of the winding machine include: the line is broken during maintenance; manufacturing process problems; poor welding of the wire ends of the components of the winding machine, overheating desoldering; the winding machine is damaged by external forces; Burned down, etc.

(2) Detection method

1. Observation method. The most common location of breakpoints is generally at the end of the winding machine. You can find out whether the two ends of the winding machine are desoldered by visual inspection.

2. Multimeter or shake meter detection method. Measure the head and tail of each phase winding machine separately. The phase with infinity is the open phase.

3. Power-on detection method. When the motor is in normal operation, a three-phase current is measured with a clamp ammeter. If the three-phase current is unbalanced and the short-circuit fault can be eliminated, the winding machine with the smallest current has a break fault.

(3) Treatment and repair methods

1. When the circuit is broken at the end, re-weld it firmly after being connected, covered with proper insulation and dipped in insulating paint, and then put on an insulating sleeve to use.

2. The internal winding machine is broken. This kind of situation cannot be repaired normally, and the winding machine coil must be replaced.