1, product improvement: for porcelain set of oil leakage at the bottom of the transformer, because of the maintenance condition, can only be replaced with a new transformer. Will oil leakage transformer permanent magnet motor to return factory repair, and ask the manufacturer to improve the sealing structure. The transformer oil leakage, timely communication with the manufacturer recommended manufacturers choose better quality rubber motor magnet gasket, explore the possibility of using new material packing. 2, the process of making the maintenance plan for now a terminal oil leakage transformer by Taiwan to apply for stop service, timely deal with oil leakage. For found no oil leakage transformer maintenance plan, equipment stop service with a porcelain on the surface of the flange bolt fastening. During the overhaul of random overhaul of main transformer transformer terminal change once a gasket. 3, the pass of maintenance process: in the transformer overhaul the repair technology to the health of equipment has a decisive role.
Pass of maintenance technique, in case for overhaul quality caused by defective equipment: such as wiring fever caused by poor contact, non-standard oil caused by false oil level and test unqualified, the bad weather caused insulation be affected with damp be affected with damp. In the concrete work of this notice. In particular, when a terminal assembly, porcelain set of inner arc bakelite pad should be paid attention to in installation surface must with porcelain set wall stick take, otherwise will lead to a terminal external after fastening flange surface tilt, make rubber gasket cannot even tighten and easy broken porcelain bushing. 4, product selection, now wholesalemotor.blogspot.com know, a growing number of oil-immersed transformer is replaced by SF6 transformers, the use of SF6 transformer can reduce many make the electrical motor 24v daily maintenance work, the only worry is leak problem, now understand of SF6 transformer leakage rate in a few parts per thousand, but now the oil-immersed transformer oil leakage rate in percentage more than a dozen, even a few decades. I think that using SF6 transformers very much worth considering.
1,according to the working power supply classification:depending on the motor working power supply,can be divided into direct current motor and ac motor.Which ac motor is also divided into single-phase motor and three-phase motor. single phase generator 2,according to the structure and working principle of classification:motor according to the structure and working principle can be divided into small electric motors asynchronous motor and synchronous motor.Synchronous motor can also be divided into permanent magnet synchronous motor,synchronous motor and magnetic resistance motor with hysteresis.Asynchronous motor can be divided into ac induction motor and motor commutator.Induction motor is divided into three phase asynchronous motor,single-phase asynchronous motor and cover pole asynchronous motor.Communication is divided into single-phase series motor commutator motor,ac/dc motors and repulsion motor. 3,according to the classification of start-up and operation mode:the motor according to the start-up and operation mode can be divided www.dongfeng-motor.com into capacitor start motor,capacitor contributed to motor,capacitor start motor running and split-phase motors.
4,according to the rotor structure classification:according to the structure of the rotor can be divided into the cage induction motor (old standard called squirrel-cage asynchronous motor) and wound rotor induction motor (wound asynchronous motor is called old standard). 5,according to the speed of classification:can be divided into the high speed motor,motor at low speed,constant speed motor and speed regulating motor.Has general is series of brush type ac motor,commonly used in small electric tools,such as some electric hair dryer,hand electric drill,the vacuum cleaner...Work with electric spark,noise is very big,but small size,large torque.Startup capacitor is used to produce to split phase of electrical motor single-phase ac power supply,using capacitor capacitive reactance of alternating current (ac),and after a coil in series,the overall current phase shift than simple inductor current phase shift,which USES two different phase current,the magnetic field to produce a different time,such as three-phase alternating current (ac),form a rotating magnetic field.
