How do you determine the three-phase motor U-V-W

Premise is three-phase motor,if there is no any label,see terminal,open connection guide,top left first for U1,followed by V1,W1,and then the remaining 3 size is measured with a multimeter ohms range,in turn,the same for each of the corresponding winding tail.1 the three-phase asynchronous motor U,V,W between conduction? I use a multimeter test of three-phase asynchronous motor,U,V,W three terminal,why it is connected between the two? That is between each two phase is conduction,is this normal? Whether internal short circuit? Tong is certain,regardless of the delta connection or y connection,between them are interlinked,this is normal.Delta connection of resistor is equal to two coil series again and after wholesalemotor.blogspot.com the third parallel resistor,y connection is equal to the resistance after two coils in series.2 motor three-phase winding is same or U V to W almost no resistance,but after the power supply can operate properly,what reason is this? 

Electrical single phase asynchronous motor wiring has been disconnected.You can measure the dc resistance,generally winding dc resistance is small.In ac motor winding inductance coil,then it has impedance,so when it is bubbled into alternating current will not burn.3,a motor,in the case of no electricity,U,V two phase winding resistance value is 5.4 euro,W phase for the more than 100 thousand,this shows that 5kw permanent magnet generator what is the problem? Interturn problems,may be insulation electric motors price damage,check the winding,again,such as resistance balance again electrify,right?4 "2nd level of the motor insulation resistance in general in many megohm range? Cold insulation resistance should be greater than the general motor (1000 + U) / 1000.U for the winding of the rated voltage,resistance to (mge) insulation resistance value is much bigger in practice,it is affected by temperature and humidity of the air,but also the lowest not less than 1 megohm.

What are between motor and mechanical transmission way?

(1),the back wheel direct drive;(2),belt drive;(3),gear transmission;(4),worm drive; (5),chain;6,friction wheel electric motor 12v 500w transmission.What inspection tour the running transformer should do?(1),voice is normal;(2),check whether there is any oil leakage,oil leakage on the ac electric motor transformer,the color of the oil and oil level is normal;(3),current and temperature of the transformer is more than permitted;(4),transformer bushing,clean,ac induction motor 110kw do you have any damage crack and discharge; (5),transformer grounding are www.dongfeng-motor.com in good condition.What methods of transformer dry processing?(1),induction heating method;(2),hot air drying;(3),oven drying method.

Town drainage pumping station motor running inspection rules?

(1) should be kept clean,can not have electric motor parts water droplets,oil into the motor;(2) the operation current and voltage should not be more than ratings;(3) check the bearing heating,oil,magnet prices and so on and so forth;(4) the motor acmotortrading.blogspot.com temperature rise shall not exceed allowable values;(5) the motor in operation should not have scratches and other noise;(6) for wound rotor motor,should check therotor and stator brush and slip ring of abrasion of contact;(7) motor ventilation should be good;(8) motor steering should be correct;(9) of wound rotor motor short circuit contactor should be in a short position.

Grilled slag machine and hydraulic principle of scraper

Grilled slag machine as an assignment of necessary tools for mining in,only to its working principle

thoroughly,can in the scraper "suit the remedy to the case" at fault.And scraper,as a new type

acmotortrading.blogspot.com of underground mining equipment,a lot of people with wisdom,for grilled slag machine working principle and the power conversion process is a little knowledge,the following by ZhongLiang grilled slag machine to lead everybody to learn the torso of the slag machine hydraulic working principle.Grilled slag machine's main power comes from the power,the first is an external single phase induction motor 380 v or 600 v (improve) according to the requirements of voltage sedan electricity,through the motor or electric roll Jane to convert electrical energy into mechanical energy,to drive the gear pump to start working or conveyor belt,gear pump from the tank inhalation after two clean the hydraulic oil filter.Hydraulic pressure oil input element,priority shunt felling,and through the cutting oil is divided into four different directions: multi-channel control valve (distributor),direction of machine P,priority direction machine control,oil return to the tank.Understand the working principle of grilled slag gasoline generator spare parts machine and hydraulic systems of work flow,this will make grilled slag machine troubleshooting speed increase,will make us better master the laws of scraper operation.Quicker to the combination of grilled slag machine failure,find out the location of the failure,faster and more accurate solution of slag machine fault.