Qingdao AIP Intelligent Instrument Co., Ltd
Qingdao AIP Intelligent Instrument Co., Ltd Customer - Oriented, Striver - First
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Stator Vacuum Testing Machine For Automotive Motor
1. Introduction
1.1. Test items:
AC Hipot, insulation resistance, surge, DC winding resistance, rotation.
1.2. Test object: automotive motor stator
1.3. Vacuum test: It is easier to find the failure of automotive motor stator in negative pressure, the lower of the pressure, and the longer of arc distance will be caused under same condition.
2. Technical specification
2.1. AC Hipot
| Output voltage setting range / precision | AC 500～5000V ±(2%×setting value+10V) |
| Breakdown current setting range / precision | 0.10～20.00mA ±(2%×display value+0.05mA) |
| AC Hipot current presetting alarm range | Max:0.10～20.00mA；Min:0.00～20.00mA |
| AC Hipot current / resolution | ±(2%×display value+0.05 mA)；0.01 mA |
| Test time range / resolution | 0.5～999.9s 0.1s/step |
2.2. Insulation resistance
| Output voltage setting range / precision | DC 500V/1000V ±(2%×display value+10V) |
| Insulation resistance test range / precision | 1～500MΩ ≤100MΩ:±(3%×display value+0.5MΩ) ；>100 MΩ:±(5%×display value+5MΩ) |
| Insulation resistance alarm setting range | Max:0～500MΩ；Min:1～100MΩ |
| Test time range / resolution | 0.5～999s 0.1s/step |
2.3. Surge
| Test ambient | Comparatively vacuum |
| Output voltage setting range/ precision | 500～5000V ±(3%×display value+8V) |
| Waveforms comparison | Area, area difference, corona, phase, 3 waveforms displayed in testing interface |
2.4. DC winding resistance
| Test range and precision | 10.0mΩ～20KΩ ±(0.3%×display value+3words) temperature compensation can be set |
| Test time range / resolution | 0.5～999s 0.1s/step
|
| Temperature probe / test range | DS18b20 -10.0°C~+50.0°C |
| Test precision | ±0.5°C(range:-10°C~+50°C) |
2.5. Rotation
| Direct of rotation | |
| Direct of rotation | CW, CCW, still |
3. Feature
Intelligent: The testing machine can connect to the Ethernet to achieve data interaction and resource share.
Modular design: independent test module design, all the test items are separately.
High performance: Compatible to test AC Hipot, insulation resistance, surge, DC winding resistanc, rotation.
Easy-to-maintain: support intelligent self-diagnose, remote control failure diagnosis and online software upgrading.
4. The principle of testing the stator at vacuum environment
The movement of free electrons will generate static electricity, in order to generate a large amount of static electricity, a lot of free electrons need to move, which can be achieved by increasing the friction area and friction speed. And the atoms in the object move easily at higher temperature. For example: Clothes are easier to be dried at high temperature state. The same can be said for free electrons, which can easily move at high temperatures and carry positive and negative charges. Similarly, the lower the barometric pressure, the less bound the electron is subjected to, and the free electrons are easier to get out of their bondage and "muting" to one another. Therefore, in some electrical experiments, high temperature, low humidity and low pressure make the experiment succeed easier.
5. Machine pictures are shown as below
