The overall function of alternator generator XGATE

 115/120 V AC Voltage and Three-phase Phase small 240v electric motor
Specifications
1.IEC standard
2.OEM
3.Voltage:50HZ &60HZ;380V&415V
4.Protection class: IP54
Currently a small three phase motor challenge for many embedded system is running in a very short period of time to perform a series of important tasks at the same time. Direct memory access (DMA) module provides the solution is to make through hardware control data using interrupt source to automatically read single phase motor price or write. However, this scheme before the arrival of waiting for next interruption usually DMA to execute commands to read or write, only its function will be restricted. stator In embedded systems, the interrupt events often involved in other logical processing. Before moving the data to the final destination, for example, to intervene to confirm or to modify the Electric motor data signal processing. Thus, a backed by DMA interrupt often can only make part of generator price the work, the CPU will be set aside part of the main program to complete these tasks by interrupt. In this way, the interrupt processing makes the CPU performance in other functions of the diminished. In addition, must have the accurate time single phase 3 hp motor requirements to ensure the normal operation of the system at the same time to deal with complex applications. 


China export aluminum body 220 volt ac electric motor

Specifications
1.AC motor aluminum body 
2.customized 
3. 20 years manufacturing experience 

4. competitive price,high quality 
XGATE application is in order to improve the electric motor parts response speed and reduce the CPU interrupt of the load, through the interrupt execution at the same time with the CPU in order to achieve the purpose of the operation. Then the XGATE can be used to do? motor rotor XGATE is positioned in the fast interrupt processing, can reduce the load on the CPU interrupt processing. Most embedded applications require many interrupt program to deal with simple function, the processor often perform tasks with high rate. These are usually associated with interface functions, such as the speed controller to control feedback and communicate with other parts of the system. XGATE is used to help CPU of these events. XGATE of an important characteristic is its setting although very simple, but allow develop complex applications. XGATE DMA controller is better than that of a smart, because it provides the ability of a complex I/O processing. When the XGATE use with CPU12X nuclear, there are some limitations to consider, but will not affect XGATE the designed function. XGATE provides applications with a higher level of interruption, through Shared some service programs and processes to shorten the work of CPU time.

PID principle - step response

Step response is a step input (step function) added to Water pump the system, the fan motor output of the system. Steady-state error refers to the AC motor response of the system after entering the steady stator state, the difference between generator set the desired output ac induction motor and the generator actual output of the system. The performance of the control system can be used to steady, accurate, quick three words to describe. Stability refers to the stability www.facebook.com/dongfeng.motor of the system (stability), a system to work normally, first of all generator ac synchronous generator must be stable, look from the step response should be permanent magnet motors for small diesel engine sale convergence; quasi refers to the accuracy of the control system, control accuracy, usually use the Steady state error to (Steady - state error), which represents the system output steady-state value and the difference between the expected value; quick response refers to the control system of quickness, usually use rise time to quantitative description.

PID control alternator generator

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
Today's automatic control technology is based on the concept of feedback. Feedback theory includes three fan motor parts: the elements of measurement, comparison and execution. Measurement concerned variables, compared with expectations, with the error correcting adjusting control system response. The fan motor stator winding theory and three phase motor application of generator automatic control is the key to make the right measurement and comparison, how can better correct the system. PID (proportional integral differential) controller as the earliest practical controller has 70 years of history, and still is the most widely used industrial controller. PID controller is easy motor electric to understand, there is no need of accurate www.facebook.com/dongfeng.motor system model in ac induction motor lamination use, such as precondition, and become the most widely applied controller. PID controller from the proportional unit (P), integral (I) and differential unit (D). Its input e (t) and the relationship between the output u (t) as follows: u (t) = KP [e (t) + 1 / TI ∫ e (t) dt + TD * (t)/dt] type integral in the upper and lower 0 s and t, respectively. So its transfer function is: G (s) = U (s)/E (s) = KP (1 + 1 / + TD * * s (TI) s]. The KP ratio; TI is integral AC motor time constant; TD for differential time constant

Client what's alternator generator good for us to improve the power factor?

3 Phase induction Electrical Motor MS Series for winding machine
Specifications
ambient temperature:-15 -40 
above sea level : not exceed 1000m 

rated voltage:+-5% 
Power supply bureau in order to improve their cost effectiveness requires the fan motor user to improve the power factor, the client what is good for us to improve the power factor? 1) by improving the power factor, reduce the total current in the circuit and power supply system of electrical generator set components, such as transformers, electrical equipment, wires, so not only reduce the investment costs, and reduce www.dongfeng-motor.com the loss of the power itself. (2) with the good work due to ensure value, thereby reducing the voltage loss in power supply system, can single phase 3 hp motor make the load voltage is more stable, improve the quality of electrical energy. (3) can increase the margin of the system, and dig out the motor electric potential ac synchronous generator supply equipment. If the system power factor is low, then on the basis of the existing equipment capacity, after installing capacitor, can improve the power factor, increase the capacity of load. , for instance, the power factor of 1000 kva transformer increased from 0.8 Motor parts to 0.8: this article from: get league BBS, compensation before: 1000 * 0.8 = 800 kw compensation: 1000 * 0.98 = 980 kw. Also a 1000 kva transformer, power factor change after, it can bear 180 kw load. single phase 2hp electric motor (4) reducing the user's electricity expenses; Through to reduce the loss of the above components and ANP gost motor increased electricity power factor.

ZT microcontroller streaking application small three phase motor framework

Beginners microcontroller, will struggle Water pump with the application of its various modules motor vehicle spare part function, such as serial port (232485) for a variety stator of functions of IC AC motor control, motor control, PWM interrupt, timer, human-computer interface stator application, CAN bus, etc. It is a necessary stages in the learning process, is the basic motor rotor skills. After this stage, contact different MCU will be found later, all the same, each have each advantage, and is easy to learn any new MCU of including some complex processors. And control of the MCU programming will enhance a high www.facebook.com/dongfeng.motor profile - is to control all kinds ac generator of peripheral (if the operation of the complex algorithm with DSP), motor vehicle spare part motor electric ac synchronous generator and peripheral and MCU communication mode generally has several sequential:, IIC, SPI, intel8080, M6800. So around the MCU programming is a very simple thing. However, this is only the surface of embedded development, in contact with a variety of MCU, exposed to complex design requirements, run after the operating system and so on, we are back to the single-chip microcomputer bare-metal development, before you know it will consider the whole program design the architecture of the problem; A good application architecture, is an experienced engineers and a beginner's watershed.

XGATE application and working principle - the CAN gateway

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 
CAN often encountered in fan motor the gateway in the industrial system is the typical form has two CAN network topology. XGATE CAN help to synchronous generator generator set generator achieve the double CPU CAN the function www.dongfeng-motor.com of the network. XGATE can offer 100% software filtering through the induction motor prices look-up table. In each of the 100 mu s receives a frame information (including 8 bytes per frame information and 29 identifier), for 8 bit or 16 bit MCU, the double CAN network topology control is very important. XGATE can decrease the pump parts rate of CPU load, CPU 258 - byte code is approximate generator rotor and stator to zero load. For a 6 single phase 3 hp motor bytes of data CAN information, XGATE processing every frame coding needs about 3 mu s, the worst AC motor case CPU load rate is only 6%.

The selection of magnetic beads

electric induction motor fan blade for ac motor 
Specifications
1. 20 years manufacturing experience 
2. competitive price,high quality

3. Delivery Detail:within 10 days after receiving deposit 
Different ferrite inhibit element, the best inhibiting frequency range. Generally the higher the permeability, inhibit the frequency of the lower. In addition, the greater the volume of ferrite, inhibit fan motor the better the results. In a certain volume, long and thin shape than single phase motor price stubby little inhibition effect is good, the smaller the diameter water pump price inhibition effect is better. But with the help of dc or ac drift, and problems of ferrite saturation, inhibiting component cross section, the greater the more difficult saturated, www.facebook.com/dongfeng.motor affordable, the greater the flow deviation. generator EMI absorption magnetic ring/magnetic beads differential mode interference suppression, through its current value is proportional to its volume, both disorders caused by saturation, reduces the component performance; , the suppression of common- mode interference to the power of the two wires (plus or minus) through a circular and at the same time, the effective signals Water pump in differential mode, 


Protection IP55 aluminum housing industrial fan cover 
Specifications
1. Customised 
2. good quality 
3. Surface treatment: Galvanize 

4. Delivery Detail:20-35 days after receiving payment 
EMI absorption has no effect to its, magnetic ring/magnetic beads for the common mode signal will show a larger ac synchronous generator motor electric inductance. The use of copper in have a better idea is to get through the copper wire around a few times repeatedly, to increase the inductance. According to it for electromagnetic interference suppression principle, the rational use of its inhibitory effect. Ferrite suppression components shall be installed near the interference electric motor parts sources. For input/output circuit, should as far as possible close to the shielding casing of the inlet and outlet. Of ferrite beads and magnetic beads absorption filter, in addition to should choose high magnetic permeability of a conductive material, but also pay attention to single phase 3 hp motor it. They presented to the high frequency component in a circuit resistance is about ten to several hundred Ω, so its role in the high impedance circuit is not obvious, on the contrary, in a low impedance circuit (such as power distribution, power supply or rf circuit) in use will be very effective.

ZT microcontroller streaking application small three phase motor framework

Beginners microcontroller, will struggle Water pump with the application of its various modules motor vehicle spare part function, such as serial port (232485) for a variety stator of functions of IC AC motor control, motor control, PWM interrupt, timer, human-computer interface stator application, CAN bus, etc. It is a necessary stages in the learning process, is the basic motor rotor skills. After this stage, contact different MCU will be found later, all the same, each have each advantage, and is easy to learn any new MCU of including some complex processors. And control of the MCU programming will enhance a high www.facebook.com/dongfeng.motor profile - is to control all kinds ac generator of peripheral (if the operation of the complex algorithm with DSP), motor vehicle spare part motor electric ac synchronous generator and peripheral and MCU communication mode generally has several sequential:, IIC, SPI, intel8080, M6800. So around the MCU programming is a very simple thing. However, this is only the surface of embedded development, in contact with a variety of MCU, exposed to complex design requirements, run after the operating system and so on, we are back to the single-chip microcomputer bare-metal development, before you know it will consider the whole program design the architecture of the problem; A good application architecture, is an experienced engineers and a beginner's watershed.

PID principle - positive feedback small three phase motor and negative feedback

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

Specifications
1.IEC standard 
2.OEM 
3.Voltage:50HZ &60HZ;380V&415V 
4.Protection class: IP54 

5.Packaging Details:80-112 carton box 132 and above ply wooden box
Death with positive Feedback and Negative Feedback loop control system, if the Feedback signal, in contrast to the given value signal, it is called a Negative Feedback (Negative Feedback), fan motor stator winding if the polarity is the same, three phase motor it is called a positive Feedback, generally infinite loop control system adopts Negative Feedback, also called Negative Feedback control system. Examples of many infinite loop control system. Such as a person is the death of the one who has a negative generator feedback loop control system, the Electric motor eye is the sensor, ACTS electric motor low rpm as the permanent magnet motors for sale feedback, the human body system by constantly modified finally made magnetic generator of correct action. If without www.dongfeng-motor.com eyes, there is no feedback loop, has become an open loop control system. Another example, when a real full-automatic washing machine is can single phase 2hp electric motor check whether clothes washed in a row, and can automatically cut off the power supply after the wash, it is an infinite loop control system.

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.

PID principle - step response

Step response is a step input (step function) added to Water pump the system, the fan motor output of the system. Steady-state error refers to the AC motor response of the system after entering the steady stator state, the difference between generator set the desired output ac induction motor and the generator actual output of the system. The performance of the control system can be used to steady, accurate, quick three words to describe. Stability refers to the stability www.facebook.com/dongfeng.motor of the system (stability), a system to work normally, first of all generator ac synchronous generator must be stable, look from the step response should be permanent magnet motors for small diesel engine sale convergence; quasi refers to the accuracy of the control system, control accuracy, usually use the Steady state error to (Steady - state error), which represents the system output steady-state value and the difference between the expected value; quick response refers to the control system of quickness, usually use rise time to quantitative description.

PID principle - open closed loop control system

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

Packaging Details:80-112 carton box 132 and above plywood box
Open loop control system (the open - loop control system) water pump price refers to the output of the controlled object (controlled) has no effect www.facebook.com/dongfeng.motor on the output generator price of the controller (the controller). In this kind induction motor prices of control system, not depend on the amount generator will be charged with the send ac synchronous generator electric motor parts back electric motor low rpm to form any dead loop. Closed loop control system (closed - loop control system) system is the feature of the output of the controlled object ac generator (controlled) will affect the output of the controller, send back, the formation of one or AC motor more of the infinite loop.

Motor with the choice of circuit breaker

electric induction motor fan blade for ac motor 

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

3. Delivery Detail:within 10 days after receiving deposit
Low voltage circuit breaker is generally divided into plastic shell type (also known as the device type) and frame type (also called universal type) two kinds big. The motor under 380 v245kw and more choose molded case circuit lamination machine breaker. Circuit breaker can be divided into the distribution line protection www.dongfeng- motor.com according to the use and protection, lighting protection circuit of the motor and electric leakage protection use and so on. Motor protection circuit breaker selection principles: (1) the set values for the long time delay current is equal to the rated current of the motor. (2) the instantaneous current setting: for the protection of cage motor circuit breaker, the adjusting current instantaneous equal to 8 to 15 times the rated current of the motor, rotor and stator depending on single phase motor the protected cage motor model, capacity and starting conditions. 

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For wound rotor motor protection circuit breaker, the adjusting current instantaneous is equal to (3 acmotor2.blogspot.com ~ 6) times the rated current magnetic generator of the motor, depending on the protected wound rotor motor model, capacity and starting conditions. (3) 6 times of long time delay current setting value can return time is greater than or equal to the ac motors starting time of the motor. According to the weight of the starting load, can choose to return time 1 s, 3 s, generator 5 s, one of an 8 s, 15 s. Circuit breaker tripping device setting ac synchronous generator current simplified formula: "instant-on, motor kw 20 times" "thermal trip, according to the rating of the above formula is to protect a 380 v control of three-phase cage type motor circuit breakers, instantaneous motion setting its electromagnetic tripping current, according to the number of" kw "20 times". For thermal trip, according to the rated current of the motor selection.

To investigate generator price the relationship between the electric tricycle motor current and battery current

At present, the over-current protection function of electric vehicle controller is used mostly current limiting method. Current limit is when the motor start or locked-rotor control the electric current shall not exceed a maximum value, this is the maximum current limit value. The purpose of the current limiting protection of motor, and then to protect the battery and the controller. For the battery, the power of the motor is the main load, only the current limiting function of the controller will motor current limit, battery current and 3 phase induction motor the power consumption of the squirrel cage induction motor controller was also limited accordingly. So the system in the electric current limit, shall be referred to as the maximum current of motor. But now the author found that the industry is not fully focused on motor current is nature. 

When it comes to current limit, is refers to the battery discharge current, testing is also the battery discharge current, and only said that spare parts the current limit value is how much of the controller, seems to have nothing to do with motor and the working voltage, current limiting results is the controller independent decision. Although, motor current from the battery, small diesel engine but as a result of PWM (pulse width modulation or chopped) technology used in the controller, generator motor and battery current no longer completely is one thing, especially after the electric generator acmotortrading.blogspot.com current limit, the average one to a few times. ac induction motor More important thing is that if you don't speak motor current limit value, will not be able to correct understanding of a series of practical diesel generator set phenomenon. The following, the author will discuss about the problem of the point of view and its related demonstration, hope to get more readers.

The choice of intermediate relay

 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
Intermediate relay mainly plays a role of signal transmission and transformation in the circuit, it can implement multiple control, and small power control signal can be converted to the large capacity of contact action, to drive the www.dongfeng-motor.com electric actuators. Intermediate relay contacts, can expand other electrical control function. Choose intermediate relay, mainly on the basis of the control circuit voltage grade, should also consider the number of contact, type and capacity to meet the requirements of the control circuit. Commonly used in machine tool in the rotor and stator middle of the relay type has diesel generator set two kinds of JZ7 series, JZ8 series. JZ8 for ac/dc relay. The selection of time relay. Time relay is one of the line is commonly used in electrical machine control. Its types are: electromagnetic, air damping type, electric and electronic etc. Application more is the air damping type time relay. small diesel engine alternator generator Its characteristic is reliable, simple structure, time delay setting range wider (up to 0.4 ~ 180 s). The models have JS7 - A, JS16 series. Tao, the choice of a time relay mainly considering control system circuit electric generator delay contact way of the delay, delay range and the www.facebook.com/guohong.trading generator number of the instantaneous contact, but also pay attention ac motors to the coil voltage grade can meet the requirements of control circuit.

Wire and cable, electrical should know some common sense

 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
Three-phase five wire with color yellow, green, red, 3 phase induction motor light blue, respectively the U, V, W, N protective earthing line double color (PE) transformer in operation, diesel generator each transformer phase current should not exceed rated current; The maximum unbalance current shall not exceed 25% of the rated current. Transformer generator operation should be performed periodically maintenance. The same transformer power electric water pump supply system, unsuitable mixed protective earthing and protection by zero. The voltage transformer secondary coil normally rated voltage 100 v. Secondary side of voltage transformer at work may not be short circuit. Due to short circuit will produce a lot of short acmotor2.blogspot.com circuit current, may burn out transformer, voltage transformer for this time, secondary side are installed fuse protection. 


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

Specifications
1.IEC standard 
2.OEM 
3.Voltage:50HZ &60HZ;380V&415V 
4.Protection class: IP54 

5.Packaging Details:80-112 carton box 132 and above ply wooden box
Secondary side of voltage transformer must be grounded at one end. This is to prevent the secondary coil insulation breakdown, a high pressure into the secondary side, endanger the safety of person and diesel generator set equipment. Current transformer secondary side close to the short circuit conditions at work. Rated current of the secondary coil is commonly 5 a current transformer secondary side is not allowed to open at work, current transformer secondary side must be grounded at one end, to prevent the first and second coil insulation breakdown, the side of a high voltage into the secondary side. Current transformer in diesel engine the join, want alternator generator to note magnetic generator the polarity of the first and second coil, transformer using subtractive polarity marking method in our country.

Level 6 motor magnitude 8 what meaning be?

1. The number of reflect the synchronous speed of the motor, 2 pole synchronous speed was 3000 r/min, 4 pole synchronous speed was 1500 r/min, 6 pole synchronous speed was 1000 r/min, eight pole synchronous speed was 750 r/min. Winding motor vehicle spare parts the way go to form a loop, namely pole logarithm, come in pairs, extremely is the meaning of magnetic pole, the winding magnetic field when an electric current, there will be a pole. . Each group of three-phase ac motor coil produces N and S poles, each motor each phase contains the number of poles is very few. Due to the magnetic poles are paired, so the motor with 2, 4, 6, 8... Extremely. 2. If the frequency of the three-phase ac 50 Hz, the synthesis of the synchronous speed of the magnetic field of 50 r/s, which is 3000 r/min. If the rotating magnetic field of the motor is not just a pair of magnetic poles, further analysis can also get synchronous speed n. and the relationship between the logarithmic p magnetic poles: n = 60 f/p.f for frequency, the unit is Hz. N units for r/min. The ns and pick up the frequency of the alternating current (ac) (f), electrical magnetic pole has strict relationship between log (p). The ns = f/p in China, the power frequency 50 Hz, so the diode motor wholesalemotor.blogspot.com synchronous speed is 3000 RPM, quadrupole motor synchronous speed is 1500 RPM, and so on. The speed of the rotor asynchronous motor is always less than or more than its. The speed of the rotating magnetic field, asynchronous in the name of the resulting. 

The difference between the rotational speed and rotating magnetic field of asynchronous motor rotor (called slip) usually within 10%. Thus, the ac motor (either synchronous or asynchronous). Speed is the restriction of the power frequency. Ac motor speed control, electrical motor therefore, is hard, the best way is to change the power frequency, whereas in the past to change the power frequency is more complex. So before the 70 s, in the required speed. Occasions, multi-purpose dc motor. With the development of power electronic technology, the ac motor frequency control of motor magnetic generator speed technology has started to get practical. 3. The synchronous motor speed = polar logarithmic x frequency (power frequency 50 hz) in our country, the asynchronous motor speed = extremely logarithmic x frequency - logarithmic * slip frequency. In addition, the same power of motor, the greater the speed, the smaller the output torque. 4) of synchronous motor pole: the large capacity of synchronous motor are turning pole type, namely the rotor magnetic pole, is produced by passing a dc excitation winding, and synchronous machine very logarithm is the logarithmic rotor magnetic pole. Eight pole motor rotor is eight pole, 2 p = 8, namely the motor with 4 poles. Steam turbine generator is non-salient pole type motor, more commonly a logarithmic rarely, generally for 1, 2, and n = 60 f/p, so his speed is high, up to 3000 RPM (frequency), and the number of hydro-generator. Quite a lot, for the salient pole rotor structure, the process is more complex, because the number of his lot, so he has a very low speed, perhaps only a few turns per second

Static testing rectifier circuit

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Specifications
1. a replace of Y motor 
2. larger output 
3. save energy 

4. Delivery Detail:within 30-35 days after receiving the deposit
Find converter internal dc power supply side and N and P, diesel engine dispatch multimeter to generator price resistance X10, red table bar got P, black table rods respectively in accordance generator with to R, S, T, there should electric water pump be about a few of the resistance, and the basic balance. Instead received a black watch rod P side, red table small diesel engine rods in turn squirrel cage induction motor received R, S, T, there is a close to www.dongfeng- motor.com the infinite value. Received a red table rod N side, repeat the above steps, should get the same results. We can determine if you diesel engine 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 alternator generator concluded that the rectifier bridge. Failure or starting resistance fault occurs.

The choice of motor with fuse

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Specifications
1. AC motor aluminum body 
2. customized 
3. 20 years manufacturing experience 
4. competitive price,high quality 
5. Packaging Details:exporting standards match exporting standards 
6. Delivery Detail:within 15 days after receiving deposit 
Choose fuse type and capacity, according to the protection of the load characteristics, the electric motors size of the short circuit current working conditions and use of the occasion. Most of the small and diesel engine medium-sized motor with light load or full pressure relief starting, lamination starting current is usually 5 to 7 times of the rated current; The power capacity is larger, low-voltage distribution main transformer (including capacity) in 1000 ~ 400 electric water pump kva, system impedance is small, when water pump price short-circuit fault occurs, the short circuit current is larger; The workplace such as kiln, grinding, poor ventilation condition, the working environment temperature is higher. 


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

Packaging Details:80-112 carton box 132 and above plywood box
Therefore, choose fuse breaking capacity and rated current of the melt, compared with the general industrial use should appropriately increase a bit. 3.1 the melt the experience formula of the rated current melt Electric motor rated current (A) = motor rated current (A) (3). 3.2 melt rated current simplified formula: "melt protection, kw by 6" the simplified formula, is refers to a 380 v cage motors, light load starting or decompression starting full pressure, low operating frequency, suitable for below 90 kw and cage motor. If the actual use of the motor starting frequently, or starting time is long, the empirical formula or water pump price the simplified formula of the above results can be appropriately increased a little, but it should not be too large. In short to achieve when the motor starting, melt by fusing; In the case of short circuit fault, the melt acmotor2.blogspot.com must be reliable fuse, squirrel cage induction motor cut off power supply, to achieve the purpose of the short circuit protection.

The role of voltage transformer and current transformer

The high voltage proportional relationship to transform the 100 v or lower level standard secondary voltage, for the use of protection, measurement and instrumentation. At the same time, the use of voltage transformer can be high voltage and electrical isolation. Although also be in accordance with the working principle of electromagnetic induction voltage transformer equipment, but its electromagnetic structure compared with the current transformer is just the opposite. Voltage transformer secondary circuit is high impedance circuit, the size of the secondary current is decided by the impedance of the loop. Secondary load impedance, small secondary current increase, makes a in a component of current automatically to meet electromagnetic balance of the relationship between the primary and secondary side. A voltage transformer is, as it were, structure and using a limited form of special transformer. Electromagnetic single phase motor current transformer is widely used in power system (hereinafter referred to as "current transformer"), its working principle is similar to the transformer. 


The principle of current transformer wiring, as shown on the left. The characteristics of the current transformer is: (1) a coil in series in the circuit, and as a result, the number of turns in a coil current depends on the load current of the circuit under test. And has nothing to do with the secondary current; (2) current transformer secondary coil of the current meter and relay to the coil impedance is 220v 1.5kw ac motor very small, so under normal circumstances, current transformer run in to a short-circuit condition. The ratio of the current transformer primary and secondary rated current, called the rated mutual acmotortrading.blogspot.com inductance of the current transformer ratio: kn = I1n/I2n Because of one coil rated current I1n standardization, secondary coil rated current I2n unification of 5 (1 or 0.5), so the rated mutual inductance current transformer ratio have also been standardized. Kn can be approximately expressed as transformer primary and secondary winding turn ratio, namely the kn material kn = N1 N2 / type of N1, N2, for one, two coil number of turns.

The motor rated current simplified

Alibaba China Suppliers!!Export aluminum electric motor casing
Specifications
1. a replace of Y motor 
2. larger output 
3. save energy 

4. Delivery Detail:within 30-35 days after receiving the deposit
Simplified formula: (1) the motor rated current (A) : "double motor power", generator namely "A kw two amps. Usually refers to the commonly used 380 at about 0.8 v, the power factor electric water pump of three-phase asynchronous motor diesel engine, "kw number plus one times the rated current of the motor. (2) empirical formula: the motor rated current (A) = motor capacity (kW) x 2 the simplified formula and empirical diesel generator set formula is the use of single generator set phase induction motor the result is consistent, the rated current and calculate the motor nameplate was very close to the actual current values, conforms to the practical requirements, A Y132S1-2, 10 kW motor, for www.facebook.com/guohong.trading diesel engine ac motor example, using the simplified formula or empirical formulas calculate its rated current: 10 x 2 = 20 A.

Outdoor into households tube Richard does not conform to the requirements

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
L, (1), using thin wall copper tube instead of thick wall steel pipe. (2), the embedded depth electric motors and position deviation is bigger. (3), cooked water pump in welding corner, on the wall of pipe and horizontal into household electric welding pipe network to link into 90 ° Angle. (4), into the pipe and the basement exterior wall waterproof processing is not good. 2, root cause generator analysis (l), material buyer purchases are not familiar with ac motor national norms, standards, some construction unit obfuscation to reduce costs; Construction manager is not strict or intentional misconduct of the contractor couldn't disagree, do not enforce norms and standards; Supervision of personnel management of the material approach a hole. (2), insufficient coordination with civil engineering and other professional team. (3), no pipe auto spare parts bending machine, or do not use pipe bender, not strong sense of responsibility, convenience to use welding to burn. Tube (4), embedded into the homes of workers don't understand waterproof technology, and is not waterproof, please professional help. 


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, preventive measures (l), and must use thick wall copper tube into the household embedded pipe or conform to the requirements of the PVC tube (general wall auto spare parts thickness PVC Φ l 14 more than 4.5 mm, Φ 56 meters to 3 mm). (2), strengthening coordination and cooperation with civil engineering and other related professional, clear outdoor floor level, to ensure that the embedded depth of not less than 0.7 meters. (3), strengthen the contracting team leadership and material buyer relevant laws and regulations of education, supervising personnel should strictly carry out material approach to test the rules, magnetic generator plug hole. (4), embedded steel pipe on the wall of elbow must use pipe bender www.facebook.com/guohong.trading bending, bending are not allowed to welding and welding. Steel pipe after bending, there should be no cracks and significant dent phenomenon, its bending flat program should not be greater than 10% of the pipe diameter, bending radius should not less than wear into the minimum allowable diesel engine bending radius of the cable. (5), good waterproof processing, please professional on-site guidance or by waterproof professional leagues do waterproof processing.

Level 6 motor magnitude 8 what meaning be?

1. The number of reflect the synchronous speed of the motor, 2 pole synchronous speed was 3000 r/min, 4 pole synchronous speed was 1500 r/min, 6 pole synchronous speed was 1000 r/min, eight pole synchronous speed was 750 r/min. Winding motor vehicle spare parts the way go to form a loop, namely pole logarithm, come in pairs, extremely is the meaning of magnetic pole, the winding magnetic field when an electric current, there will be a pole. . Each group of three-phase ac motor coil produces N and S poles, each motor each phase contains the number of poles is very few. Due to the magnetic poles are paired, so the motor with 2, 4, 6, 8... Extremely. 2. If the frequency of the three-phase ac 50 Hz, the synthesis of the synchronous speed of the magnetic field of 50 r/s, which is 3000 r/min. If the rotating magnetic field of the motor is not just a pair of magnetic poles, further analysis can also get synchronous speed n. and the relationship between the logarithmic p magnetic poles: n = 60 f/p.f for frequency, the unit is Hz. N units for r/min. The ns and pick up the frequency of the alternating current (ac) (f), electrical magnetic pole has strict relationship between log (p). The ns = f/p in China, the power frequency 50 Hz, so the diode motor wholesalemotor.blogspot.com synchronous speed is 3000 RPM, quadrupole motor synchronous speed is 1500 RPM, and so on. The speed of the rotor asynchronous motor is always less than or more than its. The speed of the rotating magnetic field, asynchronous in the name of the resulting. 


The difference between the rotational speed and rotating magnetic field of asynchronous motor rotor (called slip) usually within 10%. Thus, the ac motor (either synchronous or asynchronous). Speed is the restriction of the power frequency. Ac motor speed control, electrical motor therefore, is hard, the best way is to change the power frequency, whereas in the past to change the power frequency is more complex. So before the 70 s, in the required speed. Occasions, multi-purpose dc motor. With the development of power electronic technology, the ac motor frequency control of motor magnetic generator speed technology has started to get practical. 3. The synchronous motor speed = polar logarithmic x frequency (power frequency 50 hz) in our country, the asynchronous motor speed = extremely logarithmic x frequency - logarithmic * slip frequency. In addition, the same power of motor, the greater the speed, the smaller the output torque. 4) of synchronous motor pole: the large capacity of synchronous motor are turning pole type, namely the rotor magnetic pole, is produced by passing a dc excitation winding, and synchronous machine very logarithm is the logarithmic rotor magnetic pole. Eight pole motor rotor is eight pole, 2 p = 8, namely the motor with 4 poles. Steam turbine generator is non-salient pole type motor, more commonly a logarithmic rarely, generally for 1, 2, and n = 60 f/p, so his speed is high, up to 3000 RPM (frequency), and the number of hydro-generator. Quite a lot, for the salient pole rotor structure, the process is more complex, because the number of his lot, so he has a very low speed, perhaps only a few turns per second