Four practical electrical knowledge

 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
Pipe for steel pipe (tube), the same communication circuit wiring must 3 phase induction motor wear the same tube, do not allow a wire through a steel tube. A root canal on the conductor shall diesel generator not www.dongfeng-motor.com exceed eight. Steel (iron) for pipe, the pipe must be reliable grounding. Pipe for steel pipe (tube), the line must add plastic on both ends of pipe. Wire wear tube length of diesel generator set 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. Wire wear tube, there is a curved line pipe length no more than 20 meters. 


TYG series rare permanent magnets three phase synchronous motor

Specifications
1. a replace of Y motor 
2. larger output 

3. save energy 
Which should be installed between the squirrel cage induction motor junction box. Wire wear tube, there are two curved line pipe length is not more than 15 meters. www.dongfeng- motor.com 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 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 ac motor 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. Joint position of the wire should not be in alternator generator the insulator fixed place, joint location away from the ac motor wires should be above 0.5 meters, hampering binding wire and broken.

ZT ac contactor selection of several techniques and matters needing attention

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 
Contactor is important low-voltage electrical components, the length of its life is one of the quality diesel engine evaluation and the main index, so it took some measures to improve life is very important. Suction characteristic and reaction characteristics of AC motor reasonable cooperation can improve the life of the contactor. The action of contactor voltage is 85% ~ 110% the Un. Contact closed suction and core make contact right of primary and secondary pumping, may lead to contact welding and increase its electrical erosion. Beating in order to reduce the contact time, small diesel engine should be properly reduced contact quality and speed, and appropriately increase the contact force early contact. For the acmotor2.blogspot.com second time in order to reduce and prevent contact bounce (at this time due to the large starting current, more serious harmfulness), in addition to borrow good cooperation from the suction characteristic and reaction characteristics in order to reduce the squirrel cage induction motor collision energy, still need to the water pump price electromagnetic water pump price system is equipped with buffer device to absorb the kinetic energy of such as armature. Finally selects the contactor, to pay attention to the use environment diesel engine of contactor, don't be too humid places in use, ac motor easy to make the contactor contact oxidation.