2014年12月29日星期一

Dynamic testing


small motor spares suppliers of motor parts 

Specifications
1.20 years fan&motor manufactruer 
2.We can open mould&punch&diecast&finish&winding 

3.competitive price,high quality 
Dynamic testing after normal in the static test result for dynamic test, namely the three electric motors phase induction motor electrical commissioning. Before and after the electricity must pay attention to the following: 1, the water pump price electricity before, must confirm whether the input voltage is wrong, the 380 v power 3 phase induction motor access to 220 v level of frequency converter ac synchronous generator will be Fried machine (Fried capacitors, varistors, module, etc.). 2, check the inverter after sowing mouth has been properly connected, whether there is loose connection, connection exception can sometimes lead small diesel engine to frequency converter failure, serious when a frying machine, and so ac synchronous generator on and so forth. 3, detect fault display content, such as transistors and preliminarily concluded that the failure and the reason. 4, such as fault, not shown first to check whether there is Electric motor abnormal parameters, and the parameter after resetting, the no-load without (motor) start frequency converter, and test the U, V, W three-phase output voltage value. Such as a lack of phase, three- phase imbalance, and so on and so forth, a fault module and driver board, etc. 5, the output voltage is normal (without acmotor2.blogspot.com phase, three-phase equilibrium), under the condition of load test. Test, it's best to full load test.

What are the factors impact on long-term allow cable current carrying capacity?


Carrying capacity refers to a cable line in the transmission of electricity through the flow of electricity, under the condition of thermal stability, when the cable conductor to achieve long-term allowed working temperature of cable current carrying capacity is called cable allows carrying rotor capacity for a long time. In practical engineering, can according to need to refer to the cable in a different environment and allows for a long time under the condition of load flow, choose different types of cable, and determine the number of the cable and cable laying. Therefore, the calculation rotor and stator of cable to allow for a electric motor parts long time spare parts load flow is of great significance. 

Factors affecting cable long-term allow carrying capacity mainly: (1) wholesalemotor.blogspot.com long-term allowed Induction motor working temperature magnetic generator of cable conductor, the higher the temperature, the greater the long-term allow loads of cable; (2) the environment around the cable temperature, ambient air and soil temperature rotor and stator is different, allowing different carrying capacity; (3) the cable conductor cross-sectional area, the greater the conductor cross-sectional area, it allows 3 phase induction motor greater permanent magnet generator carrying capacity; (4) the resistance of the cable conductor material coefficient, the electric generator greater the resistance coefficient, allowing the smaller carrying capacity; (5) cable ambient thermal resistance, heat resistance, the greater the cooling the slower, the smaller the current carrying capacity.

The selection of rated current plate with a knife switch

China export motor lamination shaft rotors 
Specifications
1. Lamination of electric motor 
2. IP54 class F 
3. 100% copper 
4. Silicon steel stamping 

5. Stunning performance
Rated current of the knife switch, shut off by general should not be diesel engine less than the sum of each load generator price rated generator current in the circuit. If the load is the motor, we must consider whether the possible maximum short-circuit peak current in circuit in the level of the rated current of electric stability under the auto 3 phase induction motor spare parts peak current (when short circuit accident, if the knife switch can pass with a maximum short-circuit current, is not squirrel ac synchronous generator cage induction motor produced because of its huge electric effect and produce the deformation, damage or touch the knife automatically pop up phenomenon, is a short-circuit current peak is the knife switch electric stability of peak current). If you have more than, you should choose rated current a greater level of www.facebook.com/guohong.trading knife switch. Inverter maintenance testing methods. In converter maintenance process, often encounter all sorts of problems, such as peripheral circuit, parameter setting bad or mechanical failure. alternator generator If is the inverter failure, which is part of the problem, how to judge slightly is introduced here.

2014年12月25日星期四

Wound rotor asynchronous motor startup


iron motor shell motor parts pig casting iron 

Specifications
1.iron or steel 
2.sand casting 
3.ISO,UL,FM,LPCB,VDS,TS16949 
4.timely delivery 

5.reasonable price
1, rotor resistance. Wound rotor asynchronous motor rotor string into the appropriate three-phase symmetrical resistance. Can not only improve the starting torque, but also reduce the starting current. Such as the diesel engine required starting torque is equal to the maximum torque, Sm generator price = 1 for reducing starting time, Water pump increase the speed of the whole process of starting torque, smooth starting process, removing the concatenated starting resistance gradually. Advantages: reduce the starting current and starting torque maintain bigger scope, need to reload start-up equipment such as electric water pump bridge crane, hoist, etc. Weakness: the boot device is more, part of the energy consumption in the start resistance and start series 3 phase induction motor is less. 2, frequency-sensitive rheostat. Frequency-sensitive auto spare parts rheostat is a new non-contact element has a unique structure. 


3 Phase induction Electrical Motor MS Series for winding machine

Specifications
ambient temperature:-15 -40 
above sea level : not exceed 1000m 

rated voltage:+-5% 
The three-phase reactor to be like and its external structure, that is, there are three core column and of three winding, three windings into a star, and through the slip ring and brush with three-phase wound rotor motor rotor winding. Initially started when the wound rotor motor, www.dongfeng-motor.com motor speed is very low, so the rotor frequency f2 is a large (close to f1), in the core loss is very big, the equivalent resistance Rm is very big, therefore, limit the single phase induction motor starting current, increase the starting torque. Current frequency decrease with the increase of n, rotor (f2 = s f1) Rm decreases, and keep the starting current and torque must be numerical. Frequency-sensitive rheostat is actually using the rotor frequency f2 smooth change for the purpose of the smooth rotor loop total auto spare parts resistance decrease. After the start, the rotor winding short sub, the frequency- sensitive rheostat removed from the circuit. Because of frequency-sensitive rheostat equivalent resistance Rm and reactance Xm varies with the frequency of rotor current, responsive, so called frequency-sensitive rheostat. Advantage: the structure is simple, low cost, easy maintenance, smooth start. Weakness: the inductance exists, cos Φ low starting torque is not large, suitable for wound rotor motor start light load.

The choice of the form of plate switch structure with a knife

According to the role of it in line and its installation position in the complete sets of power distribution equipment to determine the structure of it. Only used to single phase motor isolate the power supply, simply 3 phase induction motor choose products with no arcing cover; Such as used for breaking load, it should be chosen with arcing cover, and it is through the lever to manipulate the product; Such as the central can't handle knife switch to cut off the load current, the other can be cut off water pump price in the form of a certain load current, but it must be chosen with arcing cover of the knife switch. rotor and stator In addition, still should root tree is positive or side operation, is a direct manipulation www.facebook.com/dongfeng.motor or lever transmission, is the connection or the plate in front of the plate to choose structure. HD11, HS11 for magnetic stand, don't cut off the circuit with a load, only for current isolation. HD12, HS12 for positive side operating repairs in front lamination machine small diesel engine of the switchgear, including arc extinguishing device knife switch can generator cut off under the rated current of the load circuit. HD13, HS13 behind permanent magnet generator for positive squirrel cage induction motor operation maintenance of the switchgear ac induction motor cabinet, including arc extinguishing device knife switch can cut off under the rated current of the load circuit. HD14 used in power distribution box, including arc extinguishing device knife switch can be operated on load.

Inverter maintenance detection commonly used method

 Motor parts electric motor fan cover 
Specifications
1.Customised 
2. good quality 
3. 20 years manufacturing experience 
In converter maintenance process, often encounter three phase induction motor all sorts of problems, such as peripheral circuit, parameter setting bad or mechanical failure. If is the inverter failure, which is part of www.dongfeng-motor.com the problem, how to judge slightly is introduced here. A, static testing: 1, testing rectifier circuit. Find converter internal dc power supply ac synchronous generator side and N and P, dispatch multimeter to resistance X10, red table bar got P, black table rods respectively in auto spare parts accordance with to R, S, T, there should be about a few of the resistance, and the basic balance. Instead received a black watch rod P side, squirrel cage single phase motor induction motor red table rods in turn received R, S, T, there is a close to the infinite value. Received a red table rod N side, repeat the above steps, alternator generator should get the same results. We can determine if you have the following as A result, the circuit is abnormal, a. resistance unbalanced three-phase, failure can explain rectifier bridge. B. red table welding P side bar, the resistance is infinite, can be concluded that rectifier bridge failure or malfunctioning of the starting resistance. 2, test the inverter circuit. Received a red table rod P side, black table rods respectively to meet U, V, W, there should be a dozens of the resistance, and resistance in basic same, reverse phase should be infinite. Received a black watch acmotor2.blogspot.com ac motor rod N side, repeat the above steps should get the same results, otherwise can determine fault inverter module

2014年12月24日星期三

Lamps and lanterns, ceiling installation does not conform to the requirements

 small motor spares suppliers of motor parts 
Specifications
1.20 years fan&motor manufactruer 
2.We can open mould&punch&diecast&finish&winding 
3.competitive price,high quality 
1, phenomenon (l), lamp installation deviation, not on the center point. (2), the levelness of the rows of lamps and lanterns, straightness error is bigger. (3), chain hoist, chain is not parallel to the fluorescent lamp, under the diesel engine guide wire is not made up again. (4), ceiling fan hook with rebar processing, molding is poor; Bell doesn't absorb top, junction box appears. (5), large balcony lamp chassis plate, rust. (6) Jane lamp hole greatly, smallpox condole top, not neat. 2, root cause analysis (l), embedded lamp box when the position is wrong, wrong, install lamps and lanterns without to www.dongfeng-motor.com take remedial measures. (2), construction people curse is not strong sense of electric water pump responsibility, construction and acceptance of the existing norms, quality inspection evaluation standard are not familiar with. (3), buyer buy lamps and lanterns covet xuan, ignoring quality; 3 phase induction motor (4) was not set well, canister lamp hole size, do not have a unified nation, round hole diameter, etc. 3, preventive measures (l), before the installation of lamps and lanterns, should seriously find center, rectify the deviation. (2), according to French, rows of lamps and lanterns installation deviation should not be greater than 5 mm, therefore, need to stay in the construction of localization, the lamps and lanterns in vertical, horizontal, oblique and Lord with low levels are in a straight ac synchronous generator line. 


three phase induction electric motor Y series B35 1.5KW 2.2KW 37KW 75KW

Specifications
-One year warranty 
-Within 25 days delivery 

-Life: 5-7 years 
(3), fluorescent lamp chain hoist should be straight, not appear eight word, under the wire guide should with chain hoist plait fork. (4), embedded ceiling hooks, application of not single phase induction motor less than 8 Ф galvanized round steel reinforced fixed together with the plate and are not allowed to use rebar, processing and shaping hook should be consistent, and brush antirust paint. Bell can suck the top ceiling fans and will hook and the junction box cover. Rows of ceiling fan should be in a straight line, deviation of 5 mm or less. (5), the balcony iron plate thickness of 0.5 mm or more lamps ac synchronous generator and lanterns at the bottom of the box, and the paint surface is smooth, can play the role of rust; The glass can't be too thin, so as to avoid rupture during installation. (6), smallpox condole top tube light opening first shall be good coordinates, in addition to the required straight, neat and equally, the size of the hole should conform to the specifications of the diesel engine canister light, not too big, to acmotor2.blogspot.com ensure that the outer ring when the tube lamp installed firmly against condole top, not crack. (7), construction personnel, procurement staff to carefully implement the relevant state and local regulations.

A permanent generator price magnet ac servo motor

Since the MANNESMANN spare parts Rexroth Indramat arm of company officially motor parts launched at the hannover 1978 trade fair MAC permanent magnet ac servo motor and drive lamination machine system, this symbolized this new generation of ac servo technology has entered the stage of practical application. By the 1980 s, generator the company has a complete series of products. The whole servo device market turned to the ac system. Early simulation systems such as zero drift, anti-interference and reliability, accuracy and flexibility, as well as insufficient, is not fully electric motor parts meet the requirements of motion control, in recent years as the wholesalemotor.blogspot.com microprocessor, the application of new type digital signal processor (DSP), diesel generator a digital control system, the control part can be completely by the software, called 摪 oboro creepy-crawlies or tuan continuous fresh synchronous generator Xi, 撊 creepy-crawlies permanent magnet ac servo lamination machine system. So far, the electrical servo system of high electric generator performance is used mostly type permanent magnet synchronous ac servo motor, control drive more rapid and accurate positioning of the digital position servo system. Manufacturers such as Germany's Siemens, typical American Morgan cole and Japan panasonic, yaskawa company, etc.

Four practical electrical knowledge

 China export motor lamination shaft rotors 
Specifications
1. Lamination of electric motor 
2. IP54 class F 
3. 100% copper 
4. Silicon steel stamping 
5. Stunning performance
Pipe for steel pipe (tube), the same communication circuit wiring must 3 phase induction motor wear the same tube, do not allow a wire through a steel tube. A root canal on the conductor shall diesel generator not www.dongfeng-motor.com exceed eight. Steel (iron) for pipe, the pipe must be reliable grounding. Pipe for steel pipe (tube), the line must add plastic on both ends of pipe. Wire wear tube length of diesel generator set more than 30 meters (half hard tube) which should be installed between the junction box. Wire wear tube length more than 40 meters (iron pipe) which should be installed between the junction box. Wire wear tube, there is a curved line pipe length no more than 20 meters. 


TYG series rare permanent magnets three phase synchronous motor

Specifications
1. a replace of Y motor 
2. larger output 

3. save energy 
Which should be installed between the squirrel cage induction motor junction box. Wire wear tube, there are two curved line pipe length is not more than 15 meters. www.dongfeng- motor.com Which should be installed between the junction box. Wire wear tube, there are three bending tube length is not more than 8 meters. Which should be installed between the junction box. When using polyphase power supply, wire of the same building insulation color selection should be consistent, namely protect wire (PE) should be green/yellow double-color wire, neutral wire (N) line for the ac motor light blue; Line L1 - yellow, L2 - green, L3 - red. Single-phase power supply switch line is red, after the switch general USES white or yellow. Joint position of the wire should not be in alternator generator the insulator fixed place, joint location away from the ac motor wires should be above 0.5 meters, hampering binding wire and broken.

The choice of buttons, low voltage switch

 China export motor lamination shaft rotors 
Specifications
1. Lamination of electric motor 
2. IP54 class F 
3. 100% copper 
4. Silicon steel stamping 
5. Stunning performance
1, button. The button is usually used for short-term control circuit of the switch on or off small current. The button on the structure is a variety of forms: - operated diesel engine manually rotating knob type; Loading the signal lamp diesel engine inside lamp type - button; Emergency type - containing mushroom screw cap, for emergency operation. Generally speaking, the stop button in red. Select the button is mainly based on the need to contact points ac synchronous generator and color, using occasions. At present, the commonly used in the machine tool button for the LA series. 2, knife switch, knife switch www.dongfeng- motor.com auto spare parts is mainly used to put through or cut off work for a long time the power of the equipment. General knife switch does not exceed the rated voltage of 500 v, rated current from 10 a to squirrel cage induction motor thousands of ampere of various levels. 


full load 75% load 50%load three phase induction electric motor Y series B35

Specifications
-One year warranty 
-Within 25 days delivery 

-Life: 5-7 years
Some of the knife switch attached to fuse. Without a knife switch fuse type mainly has diesel generator set the HD and HS, with fuse type knife switch is HK, HR3 series and so on. The knife switch, the choice of main species, according to the power supply voltage grade motor capacity, the number of required to select and use places. 3. The combination switch. Combination switch switch, introduced mainly as a power source, so also known as power supply acmotor2.blogspot.com isolation switch. It can also start stop below 5 kw asynchronous motor, but the number of connected per hour should not be more than 10 ~ 20 times, rated current of the switch generally take 1.5 ~ 2.5 times the rated current of the motor. Combination switch, main types, according to the power supply voltage grade needed touch points and motor capacity to choose. Common magnetic generator combination switch for HZ - 10 series, rated current for l0, 25, 60 and 100 a four. Below is suitable for ac 380 v, dc 220 v the following electrical equipment.

Stepper motor and ac servo motor performance comparison of different control precision

 Two-phase hybrid stepper motor step Angle is 3.6 ° and 1.8 °, 5 phase hybrid stepping motors interval Angle is 0.72 ° and 0.36 ° in general. electric motor single phase motor There are also some high-performance stepper motor step Angle is smaller. Such as cross company produces a kind of stepping motor for wire walking machine, where the step Angle is 0.09 °. BERGER LAHR company in Germany (BERGER LAHR) production of three-phase hybrid water pump price stepping motor where the step Angle can dial the code permanent magnet generator switch is set to 1.8 ° and 0.9 ° and 0.72 ° and 0.36 ° and spare parts 0.18 ° and 0.09 acmotor2.blogspot.com ° and 0.072 ° and 0.036 °, combine www.dongfeng-motor.com the two and five phase hybrid stepper motor step Angle. Control precision of the ac single phase motor servo motor by the motor shaft after the rotary encoder. Panasonic digital ac servo motor, for example, in line with standard 2500 encoder of the motor, drive due to the permanent magnet generator internal used four frequency multiplication technology, the pulse equivalent to 360 ° / 10000 = 0.036 °. For with 17 encoder of the motor, drive each receive 217 electric generator = 131072 pulse motor turns a circle, namely the pulse equivalent to diesel generator set 360 ° / 131072 = 9.89 seconds. Interval Angle is 1.8 ° is 1/655 of the pulse equivalent of stepper motor.

Servo electrical protection of oil and water

iron motor shell motor parts pig casting iron 
Specifications
1.iron or steel 
2.sand casting 
3.ISO,UL,FM,LPCB,VDS,TS16949 
4.timely delivery 

5.reasonable price 
A: servo generator diesel engine motor can be used in water or oil droplets into the place, but it is ac synchronous generator not completely 3 phase induction motor waterproof or oil. Therefore, servo ac synchronous generator motor should not be squirrel cage induction motor placed or used in the water or oil contamination of the environment. B: if the servo motor is connected to a reduction gear, using the www.facebook.com/guohong.trading servo motor should be oil seal, in order to prevent the reduction gear magnetic generator oil into the servo alternator generator motor. C: servo motor cable don't immersed in oil or water.

2014年12月4日星期四

Fire control, intelligent system probe installation does not conform to the requirements three phase induction motor

 ac electric motor stator copper winding 
Specifications
1. Material: silicon steel  
2. 20 years manufacturing experience 
3. competitive price,high quality
1, loose phenomenon (1), probe installation, there is crack between, board, ceiling and wall. (2) get too generator close, probe and lamps and lanterns, the sensitivity of the heat effect of lamps and lanterns probe. 2, (1) analysis of the ac synchronous generator causes, construction personnel in the probe base without serious leveling, fixed installation. auto spare parts (2), installing plane is narrow small, embedded tube box didn't pay attention to the probe and the distance flattening of lamps and lanterns. 3, preventive measures ac synchronous generator (1), and sense of responsibility, strengthen construction personnel base installation must leveling with extremely, metope, tighten when install the probe. (2), in general, the smallpox of toilet area is lesser, often make lamps and lanterns and intelligent probe was too close, then the center of the lamps and lanterns should be properly adjusted and probe the distance from the window, ensure that both the distance around 50 cm. Public www.facebook.com/guohong.trading walkway on the top of the smallpox of fire detector, when embed box should be that diesel engine of the lamps magnetic generator and lanterns ac motor to keep boy 50 cm of distance (guarantee) in the center position of lamps and lanterns.

Common fault analysis and maintenance - running motor fault analysis

 Has swept chamber, vibration, mechanical bearing overheating and damage failure. Asynchronous motor, air gap between rotor is small, easy to cause, collision between the rotor. General because indoor end cover shaft hole wear or stop end cover mouth and base check mouth wear deformation, make the stand, end cover, single phase ac motor rotor misalignment caused chamber. Vibration should be distinguish is caused by the motor itself, or poor transmission device, or a mechanical load transfer, and then ruled out according to specific conditions. Belong to cause the vibration of the motor itself, mostly due to the rotor dynamic balance is not good, bad and bearing, shaft bending, or end cover, frame, rotor misalignment, or motor installation of foundation, installation does not reach the designated position, loose fasteners. Vibration can produce noise, will also generate additional load. Motor after electrify found speed to slow, analyze its reasons in many aspects, capacitor start motor capacity lack serious leakage, whether the capacitor voltage is too low, or a squirrel cage rotor article aluminum parts have a serious accident shrinkage cavity, breaks, and so three phase asynchronous motor on and so forth, especially the washing machine motor starting and positive and negative work alternately, often make article turned aluminum induced current big and make electromagnetic electricalmotor1.blogspot.com force increases, all can produce turned aluminum strip break, resulting in slow running to, serious when make the rotor fever and edm and burn winding lines).

ZT ac contactor selection of several techniques and matters needing attention


Cast iron ac induction electric fan motor parts 

Specifications
1. 20 years manufacturing experience 
2. competitive price,high quality 

3. Type: iron body of AC electric motor 
Contactor is important low-voltage electrical components, the length of its life is one of the quality diesel engine evaluation and the main index, so it took some measures to improve life is very important. Suction characteristic and reaction characteristics of AC motor reasonable cooperation can improve the life of the contactor. The action of contactor voltage is 85% ~ 110% the Un. Contact closed suction and core make contact right of primary and secondary pumping, may lead to contact welding and increase its electrical erosion. Beating in order to reduce the contact time, small diesel engine should be properly reduced contact quality and speed, and appropriately increase the contact force early contact. For the acmotor2.blogspot.com second time in order to reduce and prevent contact bounce (at this time due to the large starting current, more serious harmfulness), in addition to borrow good cooperation from the suction characteristic and reaction characteristics in order to reduce the squirrel cage induction motor collision energy, still need to the water pump price electromagnetic water pump price system is equipped with buffer device to absorb the kinetic energy of such as armature. Finally selects the contactor, to pay attention to the use environment diesel engine of contactor, don't be too humid places in use, ac motor easy to make the contactor contact oxidation.

2014年12月3日星期三

The choice of the fuse


ac electric motor stator copper winding 

Specifications
1. Material: silicon steel  
2. 20 years manufacturing experience 

3. competitive price,high quality 
Fuse is delay and short circuit current of www.facebook.com/guohong.trading the electric equipment overload instantaneous protection. The main categories: fuse are plug-in, spiral, packing closed tube, etc. diesel engine Machine tool that is commonly used in electrical wiring is RLl series, fuse fusing body is the main components (fuse or fuse generator link). Each level of current fuse can be equipped with a variety of different electric current of the melt. Such as ac synchronous generator RL1-100 with 60, 80, 100, a three melt current levels. Choose fuse, in fact the main is to choose the type, rated voltage, rated current of 3 phase induction motor the fuse rated current rating and melt. The fusing current is the key to choose fuse body, the choice of the melt is related to the nature of the load. General could be squirrel cage induction motor selected according to the two methods. 


Small power 3 phase ac induction motor
Specifications
1. 100% Copper Wire 
2. Voltage Tolerance 5% 
3. Aluminum, CE, ISO9001 

4. Factory Price
1. The load is ac synchronous generator stable, no peak current, such as lighting, signal, resistance furnace, etc. 2. The load peak current. Such as asynchronous motor, the starting current is rated current. 4 ~ 7 times. So can't according to the rated current to choose, by empirical calculation method to choose. To the single work for a long time (not often), available to choose the type: for more than one motor has a fuse protection for a long time, use the type to choose: electric control system design - the conversation of the heart - the heart of the dialogue. Type: Iemax capacity of the largest rated current of motor; In addition to the largest motor capacity, the sum of the rest of the motor rated current. If a few electric motor fails squirrel cage induction motor to alternator generator start at the same time, the Im for the largest capacity of an electric motor starting current, coupled with each other the rated current of the motor

Working principle of the single-phase ac motor

To make single-phase electric function automatically spin, we can add a starter in the stator winding, starting with the main windings in space by 90 degrees, starting winding to concatenate a suitable capacitance, makes differ with approximation in the phase of the primary winding current 90 degrees, the electric motor 12v 500w so-called split-phase principle. These two differ 90 degrees of electricity flow in time into the two differ 90 degrees of winding on the space, will be produced in the space (two-phase) rotating magnetic field, under the effect of the rotating magnetic field, the rotor can be automatic starting, after starting, to speed up to a certain, with the aid of an installed on the rotor of the centrifugal switch or other automatic control device will start winding broken, only main winding work in normal working conditions. Therefore, starting winding can wholesalemotor.blogspot.com mini electric motor make short work. 

But there are a lot of time, starting winding is not broken, we call this kind of motor capacitor, single-phase motor to change this kind of motor, can be achieved by changing the position of the capacitor is concatenated. In single phase motor, the rotating magnetic field generated another method called shield electrode method, electrical motor also known as single phase mask pole type motor. This made salient pole motor stator, which has two kinds of the poles and quadrupole. Each pole in a third - quarter pole face open place with full of small tank, the pole is divided into two parts, on the small part of the suit on a short circuit copper ring, like pole to cover up this part, so called cover pole type motor. Single-phase winding set in the entire history of the magnetic poles, each pole of the coil is connected in series, the connection must make its polarity, in turn, according to the N, S, N, S arrangement. When the stator winding current in the magnetic main flux, according to lenz's law, which through the short circuit copper ring main magnetic flux in the copper ring produces a 90 degrees on the phase lag of the induced current, flux on the phase of the current and lag behind the main magnetic flux, its role and the capacitor motor starting winding, motor rotation to produce a rotating magnetic field.

Ac contactor common faults are

 Stator And Rotor ac induction motor parts 
Specifications
1. 20 years manufacturing experience 
2. competitive price,high quality 
3. Material: silicon steel 
(1) after electrify cannot switch or not completely closing, the reason is incorrect or insufficient voltage coil diesel engine voltage grade, the moving parts screens, contact super bout and contact spring and release the spring force is too large, etc.; (2) the absorption 3 phase induction motor generator process is too slow, the reason lies in the dynamic and static core air gap is too big, backlash is too large, lack of coil auto spare parts voltage, 3 phase induction motor etc.; (3) too much noise or vibration occurs, the reason is diesel generator set that the circular fracture, coil voltage, core board face with dirt and rusty spot, etc.; (4) coil damaged or destroyed, the reason is that inside the coil wire break or interturn short alternator generator circuit, the coil in the over voltage or under voltage operation, etc.; (5) coil core when the power is not released, its reason has remanence is too big, reaction force is too small, board face a viscous oils, all moving parts for etc. 6. Contact and high fusion welding, the reason is that the load current is too large, distance is too small, the contact pressure is too small and breaking capacity is insufficient, contact contact with metal particles squirrel cage induction motor acmotor2.blogspot.com bump or foreign bodies, vibration too intense or occurred many times in the process of closing, etc.

The choice of buttons, low voltage switch



AC motor aluminum 2800 rpm motor fan cover 

Specifications
1. Customised 
2. good quality 
3. Surface treatment: Galvanize 

4. AC motor 
4. Limit switch (switch) : limit switch is 3 phase induction motor in accordance with the production of mechanical motion stroke position and action of small current switch. Its choice is mainly according to the requirement of the mechanical position of switch type, the contact number, voltage type, the model is determined by the voltage electric current rating requirements. Machine tool commonly used have LX2, LX19, JLXK1 and LXW11, JLXK - 11 l micro switch, etc. For fast, high sensitivity, schedule control, the rotor proximity switch can be used. Proximity switch is also known as non-contact limit switch. It is caused by the moving parts of electromagnetic field change and action. Proximity switch long life and good reliability, generator accuracy and price limit switch. 5, automatic air switch, automatic switch is spare parts also called the automatic air circuit breaker. Automatic switch on the machine is widely applied. This is because the automatic switch can connect or breaking normal working current, can automatically breaking through cutting or short-circuit current, breaking capacity is big, has under voltage diesel generator set and overload short circuit protection. 

Select wholesalemotor.blogspot.com automatic switch should be considered the main parameters: rated voltage, rated current and the limit of the allowed to cut off the current, rotor etc. Automatic switch trip rated current should be equal to or greater than the load allows the long-term average of current; The limits of automatic switch breaking ability than, at least equal to the maximum short-circuit current circuit; Automatic switch trip current setting should be according to the following principles: under voltage trip rated voltage should be equal to the rated voltage of main circuit; Thermal trip setting current and load) is equal to the rated current alternator generator of the object; Electromagnetic trip of the instantaneous electric generator tripping current setting should be greater than the load peak current in normal working conditions; generator Protect motor, electromagnetic trip decide the instantaneous tripping current of motor starting current of 1.7 times. Machine tool commonly used automatic air switch such as DZ series, the series of DW.