Payment & Shipping Terms:
Double position test in turn, the shortest test time can be up to 6 s/pc.
Testing item and accuracy:
1. Cooling state resistance test
Test method :Four points,with auto correctting ambient temperature function, the standard temperature can be set, wire connection according to buyer’s requirement.
Test range: 1Ω--200Ω
Test tolerance: ±1%
2. Dielectric strength
Pass high voltage between core and winding
Test condition: AC 0-3000V adjustable.
Voltage tolerance : ±3%
current leakage range : 0.1-10mA
Current tolerance: ±1%
Time: 1sec～60sec(software setting)
3. Insulation Resistance
Test condition: DC 500V
Tolerance: 10MΩ～200MΩ ±3%, Above 200 MΩ, the tolerance is negligible
4. Turn to Turn Insulation
Test condition: Taking a qualified stator as the standard sample, and save its test curve and data in computer. Then comparing the values of standard one and the to-be-tested stator, calculating the area and the relative error value of frequency , and then figure out the upper limit value of relative error value.
Pulse voltage peak value: 500V-3000V
Pulse peak value tolerance: ±5%
Criterion value setting: conclude as per the percentage of △S and △f, setting range is 1%-99%
5. Polarity test
Test condition: Electrify the motor stator DC current, judge the polarity direction of the stator by Hall element.
Criterion value setting: Alert when the direction of polarity is different from the setting.
Contact:Shanghai Wind Automation Equipment Co.,Ltd