Dip a three-phase motor change of single phase motor

Change of single-phase three-phase motor using people talk about when I was a rural household appliance maintenance personnel.Some of the three-phase asynchronous motor industry into the countryside,power ranging from several hundred to kw.Because most of the peasant three-phase electricity,no cannot be used directly.Methods that introduce according to some books,try to change electric motor cooling fan a few,but the effect is not ideal,after transforming the following problems (1)the loading capacity,three-phase than when using stronger.(2)the heat fast,and not easy to start.(3)in a closed set of centrifugal switch,use very convenient,can be cancelled,improvement from other aspects.(4)the vulnerability distribution container.Is there a simpler method to calculate the working capacity and the capacity of the startup capacitor.(5)could you tell me more than 3 kw three-phase asynchronous machine can be converted to single phase motor use? How to change the most simple and practical.Single-phase asynchronous motor 1.Compared with the capacity of large three-phase

asynchronous motor,running performance is poor,so our country now only do small capacity of single-

phase asynchronous motor,the current products from a few watts to about 1.3 kW.After considering the

connector safe and economic operation of wholesalemotor.blogspot.com the motor and cost-effective,in principle,we can change the 1 kW and the following three phase asynchronous motor to single-phase capacitor running asynchronous motor,the 1.1 ~ 7.5 kW three-phase to single-phase capacitor start asynchronous motor and asynchronous motor running.2.1 kW and the connector of the three-phase asynchronous motor,should choose authentic oil-immersed metalized paper do additional capacitance,capacitance pressure must be selected more than 450 v.According to the capacitance C = 14.6 In selection,type In the rated current of three-phase asynchronous motor,after calculate the numerical value is rounded,to find that meet the needs of capacitance.3.1 kW and the following motor wiring method as shown in figure l.The original motor terminal box "Y" type connection shall not

move,take selected capacitance C and between Ul and V1,the zero line on the Ul side,the line of fire

in the wl side; Such as motor reversal,is in the wl side line,take the original zero on the u1 end

connector on the Vl end,can 8500w gasoline generator change the motor turning.