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
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
Website: http://www.motor-machinery.com; http://www.coilswinding.com