Active Member
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[China]
Address: Building B-3, Liando U Valley, No. 780 Baoyuan Road, Chengyang High-tech District, Qingdao, China
Contact name:
Qingdao AIP Intelligent Instrument Co., Ltd |
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Stator Vacuum Testing Machine Of Home Air Conditioner Compressor
Motor
1. Technical specification
| Surge | |
| test ambient | comparatively vacuum |
| output voltage setting range / precision | 500～3000V ±(3%×display value+8V) |
| waveform comparison | area, area difference, corona and phase 3 waveforms displayed in the testing interface |
| AC Hipot | |
| output voltage setting range and precision | AC 200～3000V ±(2%×setting value+10V) |
| breakdown current testing range / precision | 0.10～20.00mA ±(2%×display value+0.05 mA) |
| breakdown current presetting alarm range | Max:0.10～20.00mA；Min:0.00～20.00mA |
| test time range / resolution | 0.5～999.9s 0.1s/step |
| Direction of rotation | |
| rotation | CW, CCW, still |
| DC winding resistance test | |
| testing range and precision | 10.0mΩ～20KΩ ±(0.3%×display value+3 words) temperature compensation can be set. |
| test time range / resolution | 0.5～999s 0.1s/step |
| temperature compensation function | Yes |
| temperature probe / range | DS18b20 -10.0℃~+50.0℃ |
| precision | ±0.5°C(range: -10℃~+50℃) |
| Insulation resistance | |
| output voltage setting range / precision | DC 500V/1000V ±(2%×setting value+10V) |
| insulation resistance testing range / precision | 1～500MΩ |
| insulation resistance alarm setting range | Max: 0～500MΩ; Min: 1～500MΩ |
| test time range / resolution | 0.5～999s 0.1s/step |
2. The reason of testing the stator at vacuum environment
2.1 Coils are easy to discharge in a vacuum environment, which can
better test the damage of coil enameled wire. The "vacuum" here is
not an absolute vacuum, but less air environment, since the coils
will not discharge under absolute vacuum state. Directly exposed
stator in the air is not the ideal environment for the coil to
discharge, so there will be some small damages cannot be tested.
2.2 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.
2.3 Watson concluded in electrical experiments that a conductor can
accumulate charges because of the presence of the atmosphere. The
atmosphere become conductive material and produce discharge because
of ionization, the more thin the atmosphere is, the more intense
discharge will be caused.
2.4 The idea about testing surge under vacuum environment was put
forwarded and has been conducted a large number of experimental
verification on many developed countries in the past. This
technology was first applied in the compressor motor industry. In
recent years, it has also been widely used in ordinary stator
testing industry, which improves the stator testing of this
industry in a large extent.
