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.

Wire and cable, electrical should know some common sense

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

3. Material: silicon steel 
Wall switch off the ground should be www.facebook.com/guohong.trading 1.3 meters, 0.3 mira line wall socket switch should be 2-3 m above the floor. Electricity meter from the ground should be 1.4-1.8 meters into the line the ground should be 2.7 meters from the diesel engine path, a, secondary roads, electric drive, the main river, low voltage circuit, special cableway, etc, should not have joint. Ming with plastic sheath line is mainly used for indoor installation, may not be directly into the plaster layer in the dark with laying. Wire wear tube general requirements tube total cross- sectional area of the wire (including insulation) is not more than 40% of electric water pump line pipe inner sectional area. Wire tube shall have joint, joint should be within the junction box; Different power supply circuit and voltage loop, as spare circuit, line work lighting 3 phase induction motor and emergency lighting shall be installed in the same tube. Pipe for steel pipe (tube), the same communication circuit wiring must wear the same tube, do not allow a wire through a steel tube. 


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 
A root canal on the conductor shall not exceed small diesel engine eight. Steel (iron) for pipe, the pipe must be reliable grounding. Pipe for steel pipe (tube), the line must add plastic on alternator generator both ends of pipe. Wire wear tube length of 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. single phase induction motor Wire wear tube, there is a curved line pipe length no more than 20 meters. Which should be installed between the junction box. Wire wear tube, there are two curved line pipe length is not more than 15 meters. 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 www.dongfeng- motor.com 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 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. magnetic generator Joint position of the wire should not be in the insulator fixed place, joint location away from the wires should be above 0.5 meters, hampering binding wire and broken.

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

 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
15, less circuit more series. This 3 phase induction motor kind of method is very old, and the main characteristic is extremely province line, the disadvantage is that the wire load is too large, aging serious, one problem, all the problems. So, now this way of wiring has been eliminated, basic still in use in www.dongfeng-motor.com the countryside. More than 16, circuit wiring according to room. This way is electric water pump also now in use, but not the mainstream, main characteristic is a province line and the worker, the disadvantage is that a room has a high-power electrical appliances, small power electrical appliances, open with must be a big match, out of the question has certain security hidden danger. Main use for a long time aging faster. More than 17, circuit wiring according to the acmotor2.blogspot.com function. 


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 
This way is the mainstream of the wiring way on the market at present. Benefits diesel generator set a lot, of course, weakness is more yarn florist. 18, no allocation of disorderly cloth and dominated by multi loop according to the function diesel generator set of wiring, combined with the specific situation, does not violate the principle of flexible processing. The former are not enough, the latter is possible. So, we can use the above two formulas and decoration function distribution and convenience and safety, to see how domestic outfit matching is better. (for the electric wire load, my calculation principle is 1.5 times diesel engine more alternator generator than the total load is ok, too much ac motor is a waste, even if you have money, wasting precious national resources are wrong, ha ha...)

Stepper motor and ac servo motor performance comparison different running performance

AC Induction Plastic motor fan 
Specifications
1. Customised 
2. good quality 

3. 20 years manufacturing experience 
Stepper motor control for the open loop control, single phase motor start frequency is too high or too much load step easy appear lost or blocked, stops frequently occur high speed overshoot phenomenon, so as to ensure the control accuracy, should handle the ascending and descending speed acmotor2.blogspot.com problem. Ac servo single squirrel cage induction motor phase motor drive electric water pump system for closed-loop control, the actuator can small synchronous generator diesel engine be three phase induction motor directly to the 3 phase induction motor motor encoder feedback signal sampling, internal position loop and speed loop, ac induction motor general won't electric generator appear step motor lose step or overshoot phenomenon, more reliable control performance.

Switching network

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

3. Accessories Series: stator and rotor 
Switching network is the basic function of according to the requirements of the user calls, by controlling the part in place of the command, connecting path between the caller and the called user single phase induction motor is established. It in the crossbar switch used in a variety of electromechanical switches (such as switches, coding switch, reed switches, etc.), in SPC exchange at motor electric present mainly adopts composed of electronic switch array of air exchange network, and made of the memory circuit, such magnet generator as time in the network.

The role of voltage transformer and current transformer

 AC induction cooling fan motor
Specifications
1.Customised
2. good quality
3. 20 years manufacturing experience

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 3 phase induction motor 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 generator set spare parts were, structure and using a limited form of special transformer. Electromagnetic current transformer is widely used in power system (hereinafter referred to as "current transformer"), its working principle is similar to the transformer.

 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

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 very small, so under normal circumstances, current transformer run in to a short-circuit condition. The ac motor ratio of the current transformer primary and secondary rated current, called the rated mutual 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 www.dongfeng- motor.com of N1, N2, for one, two coil number of turns.

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

electric motor 20hp aluminum body
Specifications
1.AC motor aluminum body
2.customized
3. 20 years manufacturing experience
4. competitive price,high quality

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. 


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

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.

Repair and matters needing attention

After find out the fault point electrical equipment,will start to repair,commissioning,records,etc.,and then consign is used,but must pay attention to the following: (1) find out the fault point and permanent magnet generatorrepair failure,can't find the fault points should be paid attention to as a search for the end of electrical motor the fault must be further find out the root cause of the failure analysis.(2) find out the fault point,must according to different fault condition and the location corresponding to the correct

repair method.(3) in the motor run capacitor repair work of fault point,under normal circumstances should try to be recovered.(4) electrical fault repair finished,need electricity commissioning,cooperate with the operator,to avoid new failures.(5) after each troubleshooting,electricalmotor1.blogspot.com should be

timely sum up experience,and make the maintenance records.Records include: industrial machinery

model,name,number,the date of the failure,failure phenomena,parts,damage of electric appliance,the

cause of the problem,after the repair measures and repair operation,etc.Record purpose: as a file as

a reference for future maintenance,and through the analysis of all previous failures,take the

corresponding effective measures to prevent similar accidents from happening again or improvements

for the design of the electric equipment itself,etc.