Motor network what is white? And refers to the failure of the motor and three-phase winding short circuit or breakdown, can shake table is used to test, can also use compression test; The process of three-phase asynchronous motor stator winding, the standard enterprise for winding and insulation to check one by one. About the star connection of the stator or rotor winding, and insulation check must be completed before the star connection. Interturn short circuit (Ms。 And have special tweets)The turn-to-turn tester inspection, interphase short circuit breakdown failure or general use testing withstand voltage tester. Interturn short circuit including the extremely short circuit between phase coil, the same group phase short circuit between the coil and the same short circuit between the turns of the coil. Alternate parts failure occurs generally occur in the winding short-circuit fault characteristics and end between interlayer and groove on the lower coil. Constitute the interphase short circuit and the reason is that do not conform to the rules, insulation insulation scale damage or its own disadvantages, interlayer cushion pad partial or wire to make it to suffer damage, etc. To particular emphasis here is in control of the scale of the winding end phase insulation, technology of seeking beauty and binding, and insulation scale to small, but often be these seek may result in phase with the creepage distance between the insufficiency, the problem in the motor racing reflect not to come out, but once the motor load, the problem will undoubtedly. Windings connecting line or lead wire insulation casing damage will constitute the interphase short circuit. This is a typical problem of winding ends, phase with a line through the insulating sleeve insulation, once the sleeve length is insufficient, or casing damage, is the most direct and insulation failure. Want to remind is the north in particular, about F and the following requirements of insulation class motor mostly adopts 2740 hose, the hose is under the condition of low temperature appear rupture, by contrast, 2760 insulation hose can avoid the problem. In view of the quality and cost, it is suggested that the production factory to produce motor production and give attention to two or morethings the requirements of actual use, reasonable choose this kind of insulating material. Bad varnished wire turn between failed to make consolidate all, a lot of the outside world online turn gap down the dust will be accumulated, lead to each other while under the effects of the electromagnetic vibration friction, plug in the gap in the dust again & other; Abrasives' effect, a long period of time, will wire insulation worn out, and white or interturn short circuit. Varnished is making the special motor produces and the key technology, the insulation fault of alternate with control to have the crucial effect. The key requirements and insulation control integrated the above content, we is not hard to find, the key to control phase insulation fault is involved in the composite materials and insulation casing, on an electric motor, two kinds of information of all relatively much smaller, but once appear problem is fatal, selected conform to the requirements of the data is the first condition of manipulation and solve the problem. In the process of production, and the scale of the insulation, shape control of the scale of the article, interlayer is very crucial elements, the other is in the process of the embedded terminal maintenance about insulation materials. Also can't ignore is varnished drying after curing effect on winding.
