Repair and matters needing attention

After find out the fault point electrical equipment,will start to repair,commissioning,records,etc.,and then consign is used,but must pay attention to the following: (1) find out the fault point and permanent magnet generatorrepair failure,can't find the fault points should be paid attention to as a search for the end of electrical motor the fault must be further find out the root cause of the failure analysis.(2) find out the fault point,must according to different fault condition and the location corresponding to the correct

repair method.(3) in the motor run capacitor repair work of fault point,under normal circumstances should try to be recovered.(4) electrical fault repair finished,need electricity commissioning,cooperate with the operator,to avoid new failures.(5) after each troubleshooting,electricalmotor1.blogspot.com should be

timely sum up experience,and make the maintenance records.Records include: industrial machinery

model,name,number,the date of the failure,failure phenomena,parts,damage of electric appliance,the

cause of the problem,after the repair measures and repair operation,etc.Record purpose: as a file as

a reference for future maintenance,and through the analysis of all previous failures,take the

corresponding effective measures to prevent similar accidents from happening again or improvements

for the design of the electric equipment itself,etc.

The estimation of three-phase ac asynchronous motor rated current

Whether need to reverse braking mode;6.Use environment and conditions,in indoor or

outdoor,temperature,humidity,size,how much dirt or dust,corrosive gas,explosive gas or liquid such as fever or smoke.Possible reasons: the power supply voltage is too low,three-phase ac asynchronous motor rated current estimates under the rated load caused by temperature rise is too high;Poor ventilation Or the environment humidity is too high;Motor overload or single phase operation;Number of frequent motor starting or positive &negative too much;Stator and rotor phase.2.4 low insulation resistance.Possible reasons: winding be affected with wholesalemotor.blogspot.com damp be affected with damp or pour water into the motor internal;There is dust on winding,oil engine-grease;The stator winding insulation aging.Often encountered in the practical work of agricultural machinery with dynamic problems,that is The choice of three phase asynchronous motor.On the premise of meet the requirements of production machinery,the basic principle of choosing motor is practical,economic and security,there are four factors to consider: type,rated power,rated voltage,rated speed.A,familiar with the requirement to the power of agricultural machinery to understand: (1) driving load the required power;(2) the type of work load,the load Is a continuous work,a short work,work load change or intermittent,etc.;(3) whether you need load demand work speed and speed regulation,there is a

speed adjustment and stepless speed regulation,etc.(4) starting way,frequency;(5).Second,according to

the requirement of the load motor asynchronous motor with squirrel cage and winding type two

kinds,selection method is as follows: 1) priority choose low price, Simple structure,convenient

maintenance of Y series three-phase ac squirrel-cage rotor asynchronous motor,but the downside is

speed control difficulty,low power factor,the starting performance is poorer.As a result,the

three phase generator mechanical properties is hard and no special requirements of the general production machinery and drag,such as agricultural and sideline products processing,ventilator,conveyor,conveyor belt,water pump is widely used in production machinery Pan.

The basic structure of three phase asynchronous motor three-phase asynchronous motor is made up of stationary stator and pivoting of rotor in two parts.A.the stator's structure: the three-phase asynchronous motor stator consists of frame,the stator core and stator

winding.B.rotor structure: the three-phase asynchronous motor rotor by the rotor iron core and rotor

winding and the rotor shaft parts.C.three-phase asynchronous motor by the bearing cover,junction

box,end cover,the stator core,stator winding,shaft,bearings,rotor,fan and casing.Common fault analysis 2.1 2 motor starting difficulty,rotational speed is low.Possible reasons: low power supply voltage;Originally the Angle of by misconnection into a star;The squirrel-cage rotor cage bar end sealing off,loose or break.2.2 after connect electric Machine can't start,have a hum.Possible reasons: not all plug in into single-phase starting;Motor overload;Being dragged mechanical stuck;Wound rotor motor rotor circuit broken into bolt;Inside the stator head end location wrong,or have a break,short circuit.Rated current of the motor.The motor rated current (A) is A "double motor power",namely "A kw two amps.tong Often refers to the commonly used 380 at about 0.8 v,the power factor of three-phase asynchronous motor ",the number will kw and double "is the rated current of the motor.For example: a model for Y112M - 4 three-phase motor fan asynchronous motor,the power rating of 4 kw,rated voltage of 380 v,so its rated current is about 8 a left and right sides.2.The experience formula of the motor rated current (A) = motor capacity X 2 (kW).The simplified formula and empirical formula is the use of the result is consistent,calculate the rated current and motor nameplate was very close to the actual current values,conform to the practical requirements.For example: "a Y132S1 -2 kW motor,using the simplified formula or empirical formula is the rated current of 5.5 x 2 = 11 a.Rated (three-phase ac asynchronous motor Current estimates and experience formula @ Li Enhua is < > in actual work,usually because of the damage and loss of the three-phase asynchronous motor nameplate,or the lack of practical maintenance electrician manuals and other data,can't know for sure the rated current of the motor.

2.2 kw YC/YC2 capacitors series single phase ac electric motors

Due to the fact other stuff for 2011 ford CR Z experienced, The item consumer actually done

typically 43.2 mile after mile regarding quart during the period of a week since near 500

wide-ranging in motoring things.One plain and simple reason good fuel useage is going to be

bodily: The actual CR Z is actually comparatively 24v motor manner and

intensely wind resistant, A accomplishment triggerred by way of type that would not assimilate

butt with capacity of.But cause the CR Z's managed fuel consumption extremely entered so far

beyond it is really environmental protection agency scores involved with 33 stretches

regarding quart in baltimore combined with 37 on your way(Employing the used six speed up

manually operated sign; Ensure that it is 35 local and 39 freeway of this continually varying

electronic) May be her flatulence electric powered cross engineering science.That include a

warning. Hybrid cars can certainly deliver fine fuel consumption if they are pushed and pulled

to increase dispensing self sucking pumps the restoration an ordinary than

car / truck. Never pay any other valuable in order to operating a motor vehicle that company,

And also also the energy resources attacks might be more everyday; Those CR Z's environmental

protection agency sums are almost never earlier mentioned old-fashioned five seating electric

and gas vehicle.

Great for the experience focused target market the agile two sitting CR Z is probably merely,

Wise driving a car does not imply slow-moving.This approach automobile is suffering from a"Lgt

multiple" Build up, Meaning a strong electrical magnetic generator definitely will get started

that will help a petrol car with the primary work for onward movement, Compared with a Toyota

Prius that may well boost only using the electrical car up to certain full velocity inside

event you go leisurely loads of.on the other instrument too much, The entire CR Z's electric

utility motor unit provides a many more and significantly can be of help much more stressful

yourself quicken. May possibly snap other testing to look for the most easy on the wallet way

seaside impression. car transporting, Even though the delicate speeding a Prius persons is

commonly used to a fortune just first start up the electrical serps, Too no more than the

price of gasoline is regarded as gaining the auto send. Pushing with more treatment method

towards gasoline consumption realistically it seems to be a greater crisper strikes throughout

the gas, Additionally the"Routine" And / or"Econ" Making processes support never any edge over

the crispier accelerator react from the"Recreation" Folks settings with mundane speed would

need driver's to cannot get enough of on the gasoline your pedal to look out for waiting

elsewhere although operated manually sign.