The container pressure test

 electric motor stator rotor lamination motor parts 
Specifications
1. Lamination of electric motor
2. IP54 class F 
3. 100% copper 
4. silicon steel stamping 
5. stunning performance 
For internal pressure vessel, pressure test is the purpose of the test container macroscopic intensity, the density of inspection of welded joint and sealing structure of sealing single phase motor performance. For external pressure vessel (including the vacuum container), the main purpose of pressure test is to check the density of welded joint and sealing structure of sealing performance, rather than external pressure stability of the container. Pressure test is divided into hydraulic pressure test and pressure test. Due to withstand test pressure is higher than design pressure, and the container will inevitably exist some defects in materials and welding joint, thus in the process of pressure test container leak even the possibility of cracking cannot be completely Single phase motor ruled out. From a security point of view, the pressure test should be used first hydraulic test, this is because the relative to the gas, liquid basically can be considered to be incompressible, hydraulic test, even if the container fracture, also won't lead to catastrophic explosion accidents. 

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

4. low noise and vibtration
For not suitable containers for hydraulic test, such as container there is no residual liquid, or because of a structure or support can't filling liquid container, pressure test can be used. To avoid catastrophic accidents when the pressure test, who asked to do pressure test of the container, the A and B class must be 100% ray and ultrasonic welding joint inspection, and shall strictly follow the "let rules" and GB150 about test pressure, test temperature, test methods and safety measures, etc. When the hydraulic pressure test with water as electric generator a general test medium, when need, also can be used not causing a danger to other liquid. Austenitic stainless steel containers with water after hydraulic test, water damage shall be cleared away, when can not meet this requirement, should control the chloride ion content of water is not more than 25 mg/L. Used gas pressure test should be dry, clean air, helium and other gases.

Working principle of the circuit

 Stator Motors Rotor 
Specifications
1. 20 years manufacturing experience
2. competitive price,high quality
3. Brand Name: FUJIAN DONGFENG MACHINERY ELECTRICAL LIABILITY CO., LTD

Indoor machine after joining 220 v ac voltage, wire by T301 added to the socket cN5, zero line from the first (3) feet, FU300, T301 cN4 socket to socket cN5, get 220 v ac power transformer primary, secondary 13 v ac voltage, D204, D205, D206, D207, C214 rectifier filter into the 12 v dc voltage. The voltage all the generator set spare parts way to ICl02, miniature relay SW301 ~ SW305 and buzzer power supply, a path V202, C106 voltage filter + 5 v voltage ICl (47 c862an - GC51) power supply. ICl03 (3) feet will reset signal into ICl 20 reset end, ICl began to work. When the infrared receiver to receive after the refrigeration, by ICl 46 feet to the CPU, 31 feet a pulse output level, electric vehicle motor the buzzer rang once, to alert the user. At this point, the reader set temperature and 38 feet within the operations of the indoor temperature www.dongfeng-motor.com of the indoor temperature sensor test to compare.


Y2 series electric motor wholesale
Specifications
1. effiency: IE2 and IE1 
2. 20 years manufacturing experience 
3. 12 months guarantee 
4. low noise and vibtration 

5. AC Voltage: 220V/380V, 380V/660V,400V/690V,220V/400V

 if the temperature is higher than the room temperature, the cPu will not perform refrigeration instructions; If the set temperature is lower than the room temperature, the cPu to execute commands refrigeration. If wind speed setting of high speed gear, Icl 12 feet, output level for the first 7 ICl02 feet, inverter output low level ICl02 first attending foot, SW303 electricity and, on the high-grade indoor machine work. At this moment, Icl01 first (2) feet ac motor output high level, after the first 5 feet inverting ICl02 from 12 feet output low level, make SW301 absorption, on the offer outdoor 220 v ac power. ICl to seg signal refrigeration operation at the same time, ICl01 52 feet output high level, light green light is LED3 operation. After the user starts the wind on the remote control function, Icl is the first 4 feet high output level for the first 3 feet, inverter Icl02 Icl02 14 feet output low level, SW305 to suck, synchronous motor running, realize the three-dimensional supply function.

Squirrel-cage asynchronous motor soft starter application - soft starter way of starting

 electric motor 20hp aluminum body 
Specifications
1. 20 years manufacturing experience
2. competitive price,high quality
3. Brand Name: FUJIAN DONGFENG MACHINERY ELECTRICAL LIABILITY CO., LTD

1 current-limiting starting: in the process of starting, limit the starting current does not exceed a certain value (Im), and then keep the output current, I < Im increased under the condition of voltage, until the rated voltage; The motor speed gradually increases, until the rated speed. Slope voltage starting 2: electric motor 12v 500w in electric vehicle motor the process of starting, the output torque of the motor with the increase of voltage, when starting to provide an initial starting voltage Us, then the output voltage from the Us started to grow in a certain slope, slope adjustable), motor accelerating. When the output voltage reaches up to Ur speed voltage, the motor is basically reach the rated speed. When the motor reaches the rated speed, make the output voltage at rated voltage. 3 starting torque control: use in overloading starting torque control, it is the starting torque of the motor from small to large linear rise. 



Y series best cast iron three phase induction motor
Specifications
1. 20 years manufacturing experience 
2. 12 months guarantee 
3. low noise and temperature rise 
4. high starting torque 

5. AC Voltage: 220V/380V, 380V/660V,400V/690V,220V/400V

It has the advantage of smooth starting, flexibility is good, have better protection to drag system, its purpose is to protect the drag system, extend the service life of the drag system. 4 starting torque and kick control: at the beginning of the start stage, let the thyristor within a very short time conduction after all fall, according to the original set the value of the linear rise again, enter the starting with constant current. Starting torque and kick control and torque control starting similar is also used in overloading starting, the difference is with acmotortrading.blogspot.com a sudden jump in starting torque to overcome static torque of the motor, then smooth torque rise, shorten the start-up time. Starting: 5 voltage control the voltage control starting is used for light load starting of occasions, in guarantee starting pressure drop the maximum starting torque motor, as much as possible to shorten the start-up time, is the optimal way of light load soft starter.

Non-inductive brushless dc motor drive principle

 Conduction mode and three three conduction mode The most common type of brushless motor, electric sequence diagram. Motor each turn a circle, there are six different state, each state has a 60 degrees. Also known as,. Conduction mode. Each state has two phase winding electricity, another set of closed. I am so understand, according to the position of the rotor rotation, different charging state of the switch. As long as according to certain order cycle power up, the rotation of the motor can be kept. To adjust the winding voltage (PWM), which can realize speed regulation. Here in the way of sensorless rotor position detection method. Counter electromotive force (EMF) detection method. Brushless electric motor fan cover dc motor of the counter electromotive force (EMF). The dotted line in the graph, said of the phase counter electromotive force (EMF) of the waveform. 


Counter electromotive force (EMF) and 1/2 motor voltage intersection point, known as ZERO point (ZERO). Can be seen in the figure, the ZERO (ZERO) than the phase Angle is 30 degrees ahead of time. As long as the detection to the ZERO point (ZERO), and then delay 30 degrees, you can know the position of the rotor. As long as ac motor the loop detector ZERO (ZERO), accurate phase, which can realize the rotation of the motor. Due to the first contact to touch, first not further discuss the time delay of 30 small diesel generator degrees, also can say 30 degrees ahead of commutation. The reason is the web site has been successfully by the case. Say again below ZERO (ZERO) detection method. Using the function of three resistance is no matter in which state, motor is negative plate can ensure the comparator input for 1/2 of the motor voltage. The positive input of the comparator, through a multi-channel electronic switch, in different state, switch to a different www.dongfeng-motor.com port. Each state can be detected is zero.