How To Judge The 20 Slots Heating Motor Armature

With four aspects

1. Bar to Bar resistance,0.01mΩ~10mΩ (Out of range display OVER)

Four-terminal measurement to ensure accuracy

2. Welding resistance,0.001mΩ-10mΩ (Out of range display OVER)

Six-terminal measurement to ensure accuracy

3. Cross resistance 0.01mΩ-10mΩ

Four-terminal measurement to ensure accuracy

4. Surge 100-1000V (100V/time)

Pulse crest:0.5u sec, Frequency 1~40MHz

Standard waveform is Write, OK waveform is Green, NG waveform is Red

5. Isolation resistance DC 500V

Testing time:1~10s (0.1s/time)

Range:1~500MΩ

Accuracy: ≤±5%

6. Hipot AC 100-1000V

Testing time:1~10s (0.1s/time)

Armature commutator bars ≤ 36 bars

Testing panel cycle time: 8~9s (according to 33 bars)

Motor Manufacturer Question and Wind Automation Answer

Motor Manufacturer K from Turkey

During welding resistance measurements on a 20-bar commutator, I generally obtain values between 0.02 mΩ and 0.04 mΩ. However, occasionally, I encounter values around 0.3 mΩ on some commutator bars.

Could you please advise what the maximum acceptable welding resistance should be in such cases? For instance, would setting a maximum limit of 0.1 mΩ be appropriate?

How can we calculate or define a proper threshold for this parameter?

Shanghai Wind Automation Equipment Co.,Ltd supply motor automation solution for global motor manufacturers. Setted up in the year 2010 by Senior Engineer Mr.Wang who involve in electric motor filed since 1998. Through continuous innovation and participating in globalization, it has now developed into a large enterprise that integrates R&D, production and sales to provide motor solutions for customers worldwide.

Shanghai Wind Automation built a 3C business system

1.Customized Machinery

​   Provide armature,stator motor manufacturing mchinery,

   including stand along machine, fully-auto complete production line

​   

2.Characteristic Component

  Supply the full range of motor components such as commutator, magnet, fan, motor cover,etc.

3.Comprehensive Service

   Provide motor project technical support and consulting

Centered on Shanghai, the company has formed four production bases in the Yangtze River Delta city group and supplied over 20 countries including USA, Mexico,Brazil, Argentina, Turkey,France,Germany,

Czech Republic,Romania,India, Bangladesh and So on.

Our objective is to provide turn-key motor manufacturing automation equipment with no limitation

as free as the Wind, reduce the labor cost and free the human being operator,

make the life easier and more enjoyable.