ZT ac contactor selection of several techniques and matters needing attention

TYG series rare permanent magnets three phase synchronous motor
Specifications
1. a replace of Y motor 
2. larger output 

3. save energy 
The selection of auxiliary contacts, according to your device, you can generator price choose 1 a1b, generator is a normally open normally closed, a2b 2, 3, a1b, 5 a1b, etc. Protection, can be used with thermal relay type, such as GMC - 22 contactor can be fitted with GTH - 22 of thermal relay auto spare parts 3 phase induction motor is used. Complete sets of www.facebook.com/guohong.trading installation size, in complete set of choices of ac contactor small diesel engine is a size small, beautiful contactor, and generally choose GMC series contactor, stable performance, beautiful and easy. Choice contactor, should according to the control load of work is a light task, general tasks, or heavy tasks, or other load power of the motor and operating conditions, such as choice and level of water pump price ac synchronous generator the current contactor. Again according to the control circuit power supply situation choose the contactor coil parameters, and choose according to use environment general alternator generator or special specifications of products, such as series of CJX2 ac contactor, performance is better.

Working principle of the single-phase ac motor

Stator And Rotor ac induction motor parts 
Specifications
1. 20 years manufacturing experience 
2. competitive price,high quality 

3. Material: silicon steel
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. 


CCC CE ROHS UL VDE Certification and 115/120 V AC Voltage 220V&120V induction motor

Specifications
1. Specifications1.3-phase asynchronous motors 
2. IEC standard 
3. OEM 
4. Voltage:50HZ &60HZ;380V&415V 

5.Protection class: IP54 
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.

Telephone, television system wiring, panel connection does not conform to the requirements

DONGFENG Brand Two Speed Motor
Specifications
1. DONGFENG Brand Two Speed Motor 
2. 3000RPM-750RPM 
3. Electrical motor 
4. factory price best quality 

5. 100% copper 
1, (1), multiple phone lines in high-rise building 3 phase induction motor elv shaft with strapping, fixed, respectively, appear cluttered. (2), D P box is not obvious, the thread id number CARDS resurgence, resembles diesel generator the font. (3), telephone socket Water pump connection is loose, the phone timbre distortion. Damage shield (4), TV antenna, TV audio and video distortion. (5), the construction of different dirty walls, after the completion of construction failed to clear ac synchronous generator clean site. 2, (1) analysis of the causes and construction personnel of responsibility is not strong. (2), the approach time late, as a professional team, have to in order to prevent from the 3 phase induction motor conditions in the field wiring is stolen, TV, TV team typically comes into play later, right now the metope of civil often painting process has been completed, so they easy dirty walls during construction. 



ac motor Lamination 220v class B/F 
Specifications
1. Lamination of electric motor 
2. IP54 class F 
3. 100% copper 
4. silicon steel stamping 

5. stunning performance
3, preventive measures (1), and strengthen the management of construction personnel, in close coordination with the civil engineering specialty, construction ac synchronous generator installation to clean site, keep the floor clean and metope. (2), multiple phone lines diesel generator set in the weak current shaft installation, to be tied into a bundle, and requirements in every 1.5 meters fixed main groove, cover slot cover plate. (3), telephone line connection with moistureproof connection joint connection, cable clamp pressure; Telephone wiring carefully tighten bolts, both to fastening wire and cannot be broken connection (telephone line core smaller). (4), the telephone line acmotortrading.blogspot.com to be lined up in the DP box, each the thrum of the telephone lines are indicated by moistureproof line card circuit and room number, to facilitate future telephone installation. (5), the shield of TV antenna to wear when the tube is easy to be broken hard blow, so alternator generator before threading tube should be clean, grinding tube, slippery, be careful when threading smoked pull, lest damage shield, make sure the TV image and sound quality is clear.

Circuit switched network users

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

3. Accessories Series: stator and rotor 
User role is to achieve a variety of Subscriber Line Circuit and the connection between the exchange, and often called Subscriber Line Interface Circuit (SLIC, Subscriber Line Interface Circuit). According to different switch system and the application environment, the user circuit also has a variety of types, for SPC digital exchange, at present there are mainly connected to the analog phone analog subscriber line circuit (ALC) and the digital telephone, data terminal (or terminal adapter) to digital subscriber line circuit (DLC). Analog subscriber line circuit is adapted to simulate a user environment and configuration of the interface, its basic features; Through the subscriber line feed (' feed) : switch to the common Battery telephone dc feeder; Over voltage Protection, Overvoltage Protection) : prevent damage of users impact line voltage or over voltage and switches. Ringing (Ringing) : to the called rotor stator pump party phone feed fluid flow. 


CCC,CE Certification and Waterproof Protect Feature ac motor
Specifications
power range: 0.12-18.5 kW 
Centre height of frame: 63-160 mm 
Rated Voltage: 220V 

Rated Frequency: 50Hz or 60Hz 
Monitoring (Supervision) : with the help of scanning point monitoring user line on and off state, to detect the unit water pump pick machine, hang up and dial pulse, subscriber line signal to control equipment, in order to represent the busy idle state of the user and connection requirements. Decoding (CODEC) : using the encoder and decoder (CODEC), filter, complete with analog voice signal module, digital switching network interface with digital switches. Hybrid (Hybrid) : to convert the subscriber line by 2/4 lines, in order to meet the codec and digital switching on four wire transfer request. Test (Test) : provide Test port, user testing motor electric of the circuit. The seven kinds of commonly used functions of the first letter abbreviation (BORSCHT) representative. For simulation of SPC exchange, do not need to decoding function; And in the digital program-controlled switches, in addition to specific application mode of small switches use of delta modulation, most other adopts PCM codec. Digital subscriber line circuit is SET up in order to adapt to digital user environment and interface, it is mainly used to pass line adapter (LAM) or digital phone (SOPHO - SET) with all sorts of data terminal equipment (DTE) such as computer, printer, VDU, telex.

The principle of power inverter

 generator Stator Rotor 

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

3. Accessories Series: stator and rotor 
The principle of power inverter. Power inverter (also called frequency conversion module) is converts dc frequency and voltage adjustable three-phase ac frequency conversion device, as shown in figure 5, the frequency conversion air conditioning usually adopt six IGBT bridge driving circuit. Power transistor as switch element cross - straight - to pay circuit, control circuit to make each power transistor conduction 180 ℃, auto parts and the same two transistor bridge arm wholesalemotor.blogspot.com a conduction, the other must be shut off. The element conduction phase difference between electric motor 12v 500w two phase at 120 ℃, within 360 ℃ of arbitrary has three power tube conduction in three-phase load is connected. When the control signal output, A +, A -, B +, B, C +, C - the power tube conduction respectively, thus the three-phase alternating current (ac) compressor operation of output frequency change. In practice, use the IPM (Intelligent Power Module) Module and around the circuit, such as switching Power supply circuit. IPM is a kind of intelligent power module, it will be together with the IGBT ac motor drive circuit and protection circuit encapsulation within the same module, so as to simplify the design, improve the reliability of the whole system. Frequency conversion air now tuning commonly used IPM module has Japan's mitsubishi and sanyo IPM series.

The structure of three phase asynchronous motor

A,the classification of the three-phase asynchronous motor:Classification:according to the rotor structure Category:squirrel-cage motor and wound rotor motor According to the protection type Categories:open (IP11),protected (IP22 and IP23),closed (IP44),explosion-proof According to the ventilation cooling way Categories:self-cooled,since fan cooled,he fan cooled,pipes,ventilated According to ac synchronous motor the installation structure Categories:horizontal,vertical foot,flange According to the grades of insulation Category:E,B,F,H, According to the work quota Category:continuous,intermittent,intermittent Description:Open (IP11) :cheaper price,the best cooling conditions,due to the rotor windings and exposed to air,can only be used for dry,little dust and no corrosive and explosive gas environment.Protected (IP22 and IP23) :ventilation cooling condition is good,also can prevent the water droplets and iron filings,sundry fall into motor internal,applies only to a few dry and dust and no corrosive and explosive gas environment.Enclosed (IP44) :suitable for damp,dusty,vulnerable to wind and rain erosion,corrosive gases,such as the poor working rotor and stator environment,the most common applications.

Second,the structure of the three-phase asynchronous motor (a) of the stator (static) 1,the stator core Part of motor magnetic circuit,and placed on the stator winding.Structure:the stator iron core by 0.35 ~ 0.5 mm thick surface is commonly insulating layer of silicon steel sheet coining,overlying and become,within the core of the circle has a uniform distribution trough,which embedded in the stator winding.Trough the stator core has the following kinds:Semi-closed type slot:frequency conversion motor efficiency and power factor is higher,but the winding wire and insulation are more difficult.Commonly used in low-voltage motor.Half-open mouth slot:can put molding winding embedded,commonly used in large and medium-sized low-voltage motors.The so-called forming the windings can be treated with insulation in advance and then into the slot.Open rack slot:to put molding winding embedded,insulation method is convenient,mainly used in high voltage motor.2,the stator winding Access is the circuit part of the motor,three-phase alternating current (ac),to produce a rotating magnetic field.Structure:by the three in the space between 120 ° Angle,said arrangement can be connected with the same structure of the winding,the winding of the coil respectively according to certain rule embedded in the stator slot.The main of the stator winding insulation project has the following three:(guarantee between the conductive part of the winding and iron core and reliable insulation and reliable insulation between the winding itself) (1) of insulation:overall between the stator core and stator winding insulation.(2) and white insulation:insulation between each phase of the stator winding.(3) the turn-to-turn insulation:each phase of the stator winding turn-to-turn insulation each wire.

Common faults and elimination method of induction motor?

(1) motor can't start motor starting,ringing or low speed,this is the most common fault.Its reason is: power disconnection or blown fuse,switch starting equipment or a poor contact or broken line in the stator coil;Or because of lag in the brush brush card,no contact with the slip ring;Stator voltage is too low or excessive load on the reason leads to the failure.Processing methods available voltmeter to check voltage of the motor,such as a phase power lines to check the power supply of power,insurance,switch and starting equipment contact,repair or update processing respectively.If starting rheostat is damaged,can be used to check the lamp or shaking table test,find out the fault repair;If it is found that the load is too big,should reduce or change the capacity of the larger motor. (2) motor overheating causes overload or stator terminal voltage is too high,too low,poor ventilation,may also electric motor have a bolt stator coil,etc.Measures should be

taken,such as reducing load,to adjust the mechanical and electrical pressure rating,remove the body

ventilation slot dirties dustiness,bolt repair .

(3) the spark to appear on the slide Reason is lack of the pressure on the slip ring or carbon brush and slip ring dirt,etc.,can be used sand paper to grind is good,with the cleaning brush frame,make the carbon brush block, perkins diesel generator adjust the spring pressure;Also can use clean cloth dipped in a small amount of gasoline,cleaning brush.If spark for slip ring is not round,can take fine car slip ring polishing. (4) motor violent vibration Reason to install more bad,single phase asynchronous motor basic not firm,foot screw is not tight;The individual may also be due to rotor copper bar tensile fracture or short circuit ring.Find out that the former should be correct,which can

replace the new copper,the fracture of the available copper weld repair.Sometimes because the

rotational part touching the fixed place.Should check the shaft wear and clearance of the stator and rotor,take the fine car rotor or replacement of wearing parts. (5) motor no-load current balance,but value is big .

1.The cause of the problem (1) to repair,the stator winding turns to reduce too much;(2)

power supply voltage is too high;(3) Y after motor misconnection ;(4) in the motor assembly,rotor

installed backwards,making the stator core unaligned,effective length cut short;(5) the air gap is too large or uneven;6 overhaul when the demolition of the old winding,using hot tear open method is undeserved,make the iron core loss. 2.The troubleshooting (1) rewind stator winding,restore the correct number of turns;(2) managed to restore rated voltage;(3) to connect to Y;(4) the new rotor assembly (3) to replace or adjust the air gap;(5) maintenance core or recalculate winding,appropriately increase the number of turns.