The use of the insulation resistance meter megohm meter method

115/120 V AC Voltage and Three-phase Phase small 240v electric motor

Specifications
1.Specifications1.3-phase asynchronous motors 
2.IEC standard 
3.OEM 
4.Voltage:50HZ &60HZ;380V&415V 

5.Protection class: IP54 
The rapid modern life, people moment also can not do without electricity. It exists the security problem of electricity in the process of electricity, in ac electric motor electrical equipment, such as motors, cable, household appliances, etc. Their normal operation is one of its insulation materials insulation level of the value of insulation resistance. When heated and be affected with damp be affected with damp, insulation aging. The insulation resistance is reduced. The leakage caused by electrical equipment or short circuit accident. In order to avoid accidents, often requires measuring insulation ac motor prices resistance of various kinds of electrical equipment. Determine whether the degree of its insulation can meet the needs of equipment. 

DONGFENG Brand Two Speed Motor
Specifications
1. DONGFENG Brand Two Speed Motor 
2. 3000RPM-750RPM 
3. Electrical motor 
4. factory price best quality 

5. 100% copper 
Ordinary resistance measurements usually have low voltage and high voltage measurement in two ways. And higher insulation resistance due to the general numerical normally (mge). Under low voltage measurements cannot be reflected in the real work under the condition of high voltage insulation resistance. Also called insulation resistance by megger are tables. It is the most commonly used measuring insulation resistance meter. It itself has in measuring insulation resistance of high voltage power Single phase motor supply, which is its differences with resistance measuring instrument. Used to measure the insulation resistance by megger are convenient and reliable. But if use undeserved, it will bring unnecessary to measurement error, we must use measuring insulation resistance by megger are correct.

Master electrical troubleshooting methods

Faults exclusion is an important work of maintenance personnel,to eliminate the fault,must know the cause of the failure,more important is can theoretically analysis,solve the fault occurred,should have certain professional theory knowledge,to master the methods of troubleshooting.(a) gradual deduction:if there is a short circuit fault occurs,can be gradually removed part of the circuit to determine the scope of the fault and fault point.(2) adjust the parameter method:in some cases,failure,circuit components is not necessarily bad,line contact is also good,just because of some physical quantity adjustment may be inappropriate or run after a long time,likely due to external factors causing system parameter electrical motor changes or not automatic correction system value,resulting in system cannot work normally,at this time should be adjusted according to the actual circumstances of the equipment.

(3) the principle analysis:according to the principle diagram of the control system,by tracking that is associated with fault signals,the analysis judgment,find out the fault point,and find out the cause of permanent magnet generator the problem.Using this method requires maintenance personnel and unit of the whole system working principle of the circuit have a clear understanding.(11) comparison,analysis,judgement method:it is according to the working principle of the system for controlling the action program and the logical relationship between them,in combination with failure phenomenon,comparison,analysis,and judgment,and reduce the measurement and inspection link,and quickly judge fault range.Above several kinds of commonly used method,can be used alone,also can mix,met the actual electrical fault should be combined with the specific circumstances and flexible application.

Electrical fault phenomenon is varied,the same type of failure may have different failure phenomenon,no similar failure may be the same failure phenomenon www.facebook.com/dongfeng.motor of identity and diversity,complexity to malfunction.Fault phenomena,however,is to find the basic foundation of electrical failure,and is to find the starting point of electrical fault,so be careful observation of fault phenomenon analysis,find out the fault phenomenon in the main,the most typical aspects,find out the failure time,location,environment,etc.A lot of electrical failure,must rely on the professional theory knowledge to really understand have a good grasp of.Electrical maintenance personnel and other workers maintenance personnel in comparison,more theoretical and sometimes no theory to guide a lot of work,it's impossible to be so to have certain professional theoretical high efficiency electric motor knowledge.Maintenance personnel in order to better improve their ability to solve practical problems effectively in the practical work and maintenance level,should constantly strengthen their own professional theoretical knowledge learning and improve the level of operating skills,when electrical fault occurs,can accurately locate the fault,and troubleshoot electrical equipment can steadily run normally.

Stepper motor

Stepper motor is a kind of electrical pulses into angular displacement of the actuator.Popular point:when the electric motors price stepper driver receives a pulse signal,it is driving a stepper motor according to set the direction of a fixed Angle (and the step Angle).Can be controlled by controlling the pulse number of angular displacement,so as to achieve the purpose of accurate positioning; As well as by controlling the pulse frequency to control motor rotation speed and acceleration,so as to achieve the purpose of regulating.Stepping motor in three kinds:permanent magnet (PM),reactive (VR) and hybrid (HB).Permanent magnet stepping is permanent magnet generators for saletwo commonly,torque and volume is small,step Angle is 7.5 or 15 degrees commonly; Reactive stepping generally divided into three,which can realize large torque output,stepper Angle of 1.5 degrees commonly,but the noise and wholesalemotor.blogspot.com vibration are very big.Hybrid stepping refers to a mixture of permanent magnet and the advantages of reactive.It is divided into two and five:two ac electric

motorstep Angle of 1.8 degrees commonly and five stepper Angle of 0.72 degrees.The most

widely used stepper motor.

The selection principle of the machine

Modular technology advantages,together with its competitive price and the total life significantly

reduce costs,will speed up direct drive technology in the design of the new machine application in

many fields,such as metallurgy,packaging,printing,semiconductor and factory automation.Please see the following an example:a is trying to make the machine more than 150 pieces/minute packaging OEM production,they face the challenge of gear box on a key axis of flexible when they tried to raise production machinery interference is introduced.For another modular direct drive applications:a OEM service for tyre and automobile industry provide test/measuring equipment,the company found that use of direct drive technology improve the quality of the measurement and the reliability of the machine,its reason is to eliminate invalid stroke and other external effects by a belt and pulley system.Their original design USES a frameless direct drive motor,compared with the traditional solution,it has brought many benefits,but also the disadvantage of assembly and installation difficulties-in fact,the combination of the frameless motor and feedback device on the need to spend the whole day.

As a result,the company turned to the modular direct drive technology,found that due to

its simple installation,integration only spent about 30 minutes,is much save time and cost.In

addition,they are glad to see that compared with the frameless direct drive type,modular motor torque density is higher.Because of its unique design,modular DDR motor compared with the traditional mechanical drive servo motor,appear more competitive in price.Even if the initial cost of a little higher,but in the five years of use,the operation cost of this new technology is greatly less than traditional systems.Today's most servo applications use the traditional servo motor system with mechanical transmission.The initial cost of attractive traditional system,and performance has been verified in various applications,these applications include:electronics assembly,packaging,aerospace

and defence.However,people often don't notice this kind of system in the aspect of design and

integration of extra spending costs,these additional spending for pulley,gearbox and belt and so on

need to add the mechanical components.These parts in the whole machine life wear constantly,it also

increases the total cost of life.Positioning error and tuning difficulty is common problem in these

systems,they are caused by the transmission of the flexible and invalid clearance.

Belt and pulley and transmission maintenance and replacement of the easily worn parts are need to pay a high price:first of all,users have to more parts inventory management; Secondly these additional parts caused by system failure increases system unplanned downtime,making machine production fell.Role can directly produce driving the rotation of the motor is essentially a large torque of permanent magnet motor,it is directly connected to the load.This design eliminates all mechanical transmission parts such as gears,belts,pulleys and shafts.Direct drive rotary system brought many benefits for designers and users.Because of a mechanical transmission require regular maintenance and frequently cause unplanned downtime,therefore,direct drive rotary motor technology fundamentally improve the reliability of the machine,reduce maintenance time and costs.By eliminating the mechanical transmission of flexible,direct drive design to avoid the trouble of motor and load inertia matching,at the same time,the positioning precision can also improve the speed and 50 times.Direct drive motor also bring another benefit:water pump motor acoustic noise reduction as much as 20 db.Closed and open frame type direct drive rotary Y series motor,in a variety of applications has replaced the traditional,servo motor system with mechanical transmission.

And now a new,called modular (cartridge) direct drive rotary (DDR) technology of DDR will open frame type direct drive motor in terms of performance advantages and whole framework combines the advantages of convenient installation,its price is much lower than the traditional direct drive technology.DDR motor for semiconductor process equipment is an ideal solution,because the motor is directly connected to the driven load,eliminates the traditional servo motor system usually must use the belt,pulley and gear box.The reduction in the number of parts makes the machine's overall size is reduced,the production management personnel can put more in a process of the compartment,high added value of the process equipment.Elimination of mechanical transmission parts bring a no maintenance system,and the system work more quiet.The motor www.facebook.com/guohong.trading is nature customised,therefore more expensive,need for weeks,even months for the design and integration time.In addition,once the system failure,motor or feedback device to take out the replacement process is extremely complex.Frameless DDR motor lamination technology,therefore,is not suitable for each kind of application,it is the most widely used in airborne and ground vehicles,such as night vision equipment,radar system and weapon system aimed at control,as well as those on the size,weight,and/or performance has a higher requirement of high-end industrial applications,such as robots or precision grinding machine.(closed) direct drive rotary motor with shell,is the aim the rotor,stator and before they go out to complete the feedback device integrated into a shell with a precision bearing,is a complete solution.

Enclosed for direct drive rotary motor load can ride across on the motor bearing applications is very ideal.For motors have been used for bearings,users need to put the motor connected to the load,or three or more complete alignment of bearing,it will be a hard and time-consuming work.Therefore,enclosed DDR motor is generally used in dividing and application rate

turntable.Modular (Cartridge) DDR motor is a new kind of direct drive solutions,its structure

includes a unique without bearing shell and shell in the integration of the rotor,stator,and before

delivery to complete the alignment of the high resolution feedback devices.Cylindrical DDR technology application to eliminate the mechanical transmission parts,both retained all the advantages of direct drive,and avoids the traditional closed or frameless DDR solution complex and expensive shortcomings.Modular direct drive rotary motor using novel compression coupling device to the rotor and shaft together,and provided with a unique design of clip so as to realize the "out-of-the-box",it takes less than 30 minutes.Through the shaft up installation modular direct drive rotary

motor,eliminates the mechanical flexible,wholesalemotor.blogspot.com makes the OEM

can increase the output of the machine to 180 pieces per minute.Besides increasing yield,the OEM also realized the following benefits:zero maintenance workload,the improvement of reliability and acoustic noise reduction.