显示标签为“3 phase motor”的博文。显示所有博文
显示标签为“3 phase motor”的博文。显示所有博文

2015年1月14日星期三

XGATE application and working principle of the asynchronous serial communication



induction motor rotor electronic parts 

Specifications
1.20 years manufacturing experience 
2.competitive price,high quality 

3.Delivery Detail:within 10 days after receiving deposit 
As with SPI, XGATE can be bit operation through direct counterpart or general asynchronous receiver- transmitter to control software SCI. This is similar to the original function of synchronous communication, of course, critical bit clock edges water pump price are not the same. XGATE coding in the asynchronous serial communication electric motor parts is strictly limit (maximum baud rate usually 19, synchronous generator 200 b/s). Under the condition of maximum response time must keep the baud rate of 20% and 2% of the total, namely every 10.4 mu s for generator price each sample or set up one more time. Although the processing time is allowed to change, but under the baud rate of 19, 200 b/s is not in the sending and receiving the correct 8 bits of data on conflict. XGATE coding send SCI data needs to be generated by a timer compare two fixed duration: one is a cycle; 

Totally Enclosed Protect Feature and Three-phase Phase low rpm ac electric motor
Specifications
power range: 0.12-18.5 kW 
Centre height of frame: 63-160 mm 
Rated Voltage: 380 V 
Rated Frequency: 50Hz or 60Hz 

Packaging Details:80-112 carton box 132 and above plywood box
The other is a breakpoint detection time, usually ac synchronous generator for many bits cycle time. One in the transport Electric motor process is very short, only need ac induction motor to set up lamination a pointer to electric motor low rpm the output state and change. Receive data requirements with a cycle time sampling was carried out on the middle passage, and this will interrupt apart before, like entered another XGATE interrupt, disrupt rate doubled. In addition, this program is very short, in the worst case between interrupt (send/receive, 19 200 baud rate for the b/s) of the interval is 26 mu s; Under the influence of the XGATE clock program (19 200 baud rate for the b/s), SCI before send and receive data, allowing a program about 36 mu s (+ 10.4 mu s allow delay. 26). This is a when XGATE program to join, how to meet the maximum delay and allows other applications to perform good example.

2014年12月2日星期二

The choice of buttons, low voltage switch

 ac electric motor stator copper winding 
Specifications
1. Material: silicon steel  
2. 20 years manufacturing experience 
3. competitive price,high quality 
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 anon-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. 


Electric Motors 1 HP 3PH
Specifications
1. Shape: squirrel cage
2. CE.ISO CCC 
3. Side Terminal Box 
4. Free Foot Mounting 

5. 100% copper wire 
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.

2014年11月26日星期三

DBJ08-20-98 household electric equipment should meet the following standard

3, as people living standard rise, electric rice fort, microwave oven, air conditioner, electric kettle, electric spot squirrel cage induction motor chung person households, household electricity load is growing rapidly, 1 kw of power load is not enough, so DBJ08-20-94 household electricity load design power of 4 kw, watt-hour meter to choose 5 (20) A. Price increase of residents' income and household electrical appliances, make electric motor parts a home acmotor2.blogspot.com two air conditioners, color TV sets and squirrel cage induction motor computers in the home is not new, has prompted a surge in household electricity load again, therefore DBJ08-20-98 household small diesel engine electricity load design power increased generator to 4-8 kw by 4 kw. The Induction motor high standards had permanent magnet generator been designed by 6 kw, high standards of commercial electric generator housing and more than 130 m2 residence designed by 8 kw, watt-hour meter ac motors are all made of 10 (40) A single-phase watt-hour meter.

2014年11月20日星期四

The definition of secondary loop


high efficiency high power electric motor Y2 motor

Specifications
1. effiency: IE2 and IE1 
2. 20 years manufacturing experience 
3. 12 months guarantee 

4. low noise and vibtration
In the electrical system of transformer secondary windings, measurement monitoring instrument, relay, automatic acmotor2.blogspot.com devices such as cable stitch control through the circuit. Used to control, protection, regulation, measurement and monitoring in the primary loop parameters and the working condition of each element. For monitoring gauge meter, control operation signal, relay protection and automatic device of the electrical connection in the circuit are referred to as the secondary loop or secondary wiring. Work refers to a device for monitoring, control, measuring, regulation and protection, the motor configured, such as: measuring instrument, relay, control and signal components, automatic device, relay protection device, such as current, voltage transformer, according to certain request together of electrical circuits, referred to as the secondary wiring generator set or secondary loop. A circuit composed of generator, transformer, power cable, circuit breaker, disconnecting switch, voltage, current transformer, lightning arrester, such as circuit consisting of, called a connection or give priority to.

2014年11月11日星期二

Accurate meaning of the PT and CT


Totally Enclosed Protect Feature and Three-phase Phase low rpm ac electric motor

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

5.Protection class: IP54 
 CT, CT (Current Transformer), English spelling Current Transformer, is the primary side large Current, in proportion to fit through the instrument or use the ac electric motor relay, rated Current 1 a to 5 a or the transformation of equipment. Its working principle and the transformer is similar. Also known as TA or LH (old symbols). Working characteristics and requirements: 1, a winding and high voltage circuit in series, only depends on the high pressure loop current I1, and has nothing to do with the secondary load. 2, secondary loop are not allowed to open, otherwise will produce dangerous high voltage, endangers one's personal and equipment safety. 3, CT secondary loop must have some grounding directly, prevent after the primary and secondary windings insulation breakdown of high voltage, but only a little ground. The accuracy of the 4, and transformation. Wiring forms are: the three-phase y connection completely, two-phase incomplete connection, two motor vehicle differ lift, two-phase three star connection, single-phase completely. Note: Three phase motor the current transformer for measuring core should be easy to saturated when a short-circuit, to limit the growth of secondary side current ratio; Core for relay protection, should not be saturated when a short-circuit, make the secondary side of current with the primary side current is directly proportional to increase.

2014年11月2日星期日

Vector control

In the past ten years or twenty years, servo motor market has to shift from a brush servo to brushless servo market, this is mainly due to the low maintenance brushless servo rate and high stability. In this decade, the driving part of the circuit and system aspects of the development of permanent magnet generator technology has been very perfect. Control mode has completely can realize the function described those keywords. Most of the high-performance servo system is controlled by an internal loop to control the torque. The ring by external and internal generator set spare parts torque speed www.dongfeng-motor.com loop and position loop with different control effects in order to achieve. External control loop design is has nothing to do with the matching motor, and the design of the internal torque loop ac motor is closely related to the performance of the matched motor. A brush motor torque control is very simple, because there are brush motor commutation work can be completed. Output torque is poles and a brush motor dc voltage proportional to the input. Torque can be easily controlled by P - I control circuit. P - I the main functions of the control circuit is controlled by detecting the actual current and electric current, the deviation between the input voltage of the motor was adjusted dynamically in real time.

2014年10月20日星期一

Pump and fan vane

Pump and fan is to use plus can denier conveying fluid permanent magnet motor fluid machinery.They are widely used in gas and heating and ventilation.According to the working principle of pump and fan,usually they can be classified as follows:Vane pump and the fan motor run capacitor is rotating,the main structure fixed casing and impeller blade.Of fluid work through the rotation of the impeller,allowing fluid to diesel generating gain energy.According to the fluid flow conditions,they then can be divided into the following several kinds: 1.wholesalemotor.blogspot.com The centrifugal pump and fan;2.Axial flow pump and fan;3.The mixed flow pump and fan,the fan is a combination of the first two.4.Tubular fan.

2014年9月16日星期二

The difference between the current transformer and voltage transformer


current transformer secondary short circuit,but will not open; Can open circuit voltage transformer secondary,but shall not be short circuit;2) relative to the secondary side of the load,a mini electric motor small internal resistance and voltage transformer can be ignored,can think of the voltage transformer is a voltage source; While current transformer of a resistance is very big,so that can be thought of as a current source internal resistance is infinite.3) voltage transformer normal work of magnetic flux density is close to saturation value,magnetic flux wholesalemotor.blogspot.com density decreased when fault.

Current transformer magnetic flux electric motors 12 volt density is very low in normal working conditions,and short circuit due to the primary side become large short-circuit current,the magnetic flux density increases greatly,sometimes even more than saturated value. Current transformer in electric power
system is an important part of a device,the principle of which is according to the principle of
electromagnetic induction and manufacturing. It's a little coil number of turns,5kw permanent magnet generator usually adopt single-turn coil,namely a copper or a copper platoon. Take mainly secondary coil measuring instrument or relay coil. Current transformer secondary side can not open,when the secondary side open,a side is mainly used for excitation current,this will be induced in the secondary side of high voltage,so as to endanger the safety of the secondary equipment and personal can also cause a current transformer burned.