Pump and fan - displacement

Pump and fan is to use plus can denier conveying fluid fluid machinery. They are widely used in gas and heating and ventilation. According to the working principle of pump and fan, usually they electrical motor can be classified asynchronous motor as follows: Positive displacement pump and fan in operation, the mechanical work within the volume change constantly, and motor run capacitor suction or discharge fluid. According to its different structures, and can be divided into; 1. Reciprocating: this machine through the piston within the cylinder of the reciprocating function make the cylinder contents changed repeatedly, with suction and discharge fluid, such as piston pump, piston pump), etc.; 2. Rotary: chassis within the rotor rotates, or rotating parts working volume change between rotor acmotortrading.blogspot.com and housing, so as to the suction and discharge fluid, such as gear pump, gear pump), screw pump, screw pump), etc.

Motor startup fuse fusing or thermal relay disconnect

1,fault inspection step:check whether the fuse is appropriate,check whether there is a short circuit

in the circuit,check whether the motor is short circuit or grounded. 2,acmotor2.blogspot.com ground fault detection:with a shaking table test of the motor winding insulation resistance,when the insulation resistance is lower than 0.2 ohms,serious motor be affected with damp be affected with damp.Check step by step with multimeter resistance or check lights,magnet prices if small or check lights indicating the darker the winding resistance seriously be affected with damp be affected with damp,need drying processing,if the resistance is zero or check light close to magnet motor normal brightness,then the nearly grounding.

Winding grounding outlet hole generally occurs in motor,power supply cord into the thread holes or winding outstretched notches for the latter situation,if discover the grounding is not serious,rotor and stator bamboo or insulating paper can be inserted between the stator core and winding,such as the check is not grounded,to bind up and continue to use after coated insulating varnish.3,the method of detecting short-circuit fault:windings turn-to-turn short circuit,short circuit situation is interphase short circuit.A use or multimeter and check for any two insulation resistance by megger are,such as found in 0.2 megohm once or zero is interphase short circuit.(check motor fuses all connections should be apart) when B measured three phase winding current,current big as short circuit phase C with short circuit detector check winding short-circuit D with bridge between three-phase winding resistance,little resistance to phase short circuit.

motor

Motor (Motors) is a device converts electrical energy into mechanical energy.It is using electric coil (that is,the stator winding) to produce a rotating magnetic motor spare parts field and try to turn the mouse cage closed wholesalemotor.blogspot.com form magnetic aluminum frame Electric rotary torque.Motor by using the power divided into dc motor and ac motor,electric power system www.dongfeng-motor.com in most of the motor is ac motor,synchronous motor or induction motor (speed and the rotor rotating speed of stator magnetic field is not in sync speed).Motor is mainly composed of stator and rotor,the direction of motion of the wire in the magnetic field force with the motor lamination direction of current and magnetic induction line (magnetic Field direction) direction.Working principle of the motor is a function of magnetic field on the current stress,to rotate the motor.

Motor market situation

High efficient motor Y series ac asynchronous motor replacing JO2 motor basic models without limit,thus,all used the occasion of ac asynchronous motor Y series motor replace JO2 series can be used. Yx series motor market potential is restricted by its capacity.In principle,90 kw ac asynchronous motor can be replaced by Yx series efficient motor.Below 90 kw of installed capacity electric vehicle motor of ac asynchronous motor About 30% of the total amount of ac asynchronous motor.In recent ten years,the Chinese government is committed to promoting motor drive technology,all walks of life to some extent,the motor drive.According to the Oil,electricity,building materials,steel,non-

ferrous,coal,chemical industry,paper electric motor cooling fanmaking,textile and other departments recently sampling survey results of the enterprise,petroleum chemical industry,building materials,motor drive application is better.In the present The motor load of 400 million kW,about 50% is load change,30% of which can be to solve the problem of the load changes motor speed.So in the current market capacity,about 60 million kW Speed motor market.All kinds of motor installed capacity in China has been more than 400 million kW,which accounted for about 90% of the asynchronous motor,accounted for about 80% of small and medium-sized motor,drag the fan,water pump and compressor motor of such a machine About 130 million kW.At present,small and medium-sized motor has www.dongfeng-motor.com more than 152 series,842 varieties,more than 4000 specifications.For nearly 10 years,industrial machinery,such as the relevant departments to grasp the energy-saving work of the motor,group Knit led related research institute and enterprises,has made a variety of energy-saving motor design,and expressly enacted out 63 energy- intensive motor and promotional 24 kinds of energy-saving motor,achieved some results.these Energy- saving products are mainly divided into two categories: one is to improve the efficiency of the motor high efficiency motor,another kind is adjustable speed motor.