Thiết bị kiểm tra động cơ MOTOR GENIE™ All Test pro

Mã sản phẩm: MOTOR GENIE™ |
Thương hiệu: All Test Pro

Giá bán: Liên hệ

Yêu Cầu Giá Tốt

Thông tin sản phẩm
EPRI Statistics

 Based on statistical data compiled by the Electric Power Research Institute (EPRI), 47% of motor failures are   due to electrical faults/failures.  The 47% can be further broken down into rotor problems (10%) and winding problems (37%).  Mechanical faults may sometimes have root causes that are electrical in nature.

Winding defects can occur due to insulation age, contamination, power surges, thermal overload, damaged wire/materials, vibration and other causes.  The begin as energy crossing an insulation fault (such as moisture or contamination), which isolates at least one turn.  This generates additional stress and heat across the defect, which progresses until an arc is drawn and the winding fails.

About Winding Faults

There are four basic types of winding faults.

• Between turns in a coil
• Between coils in a phase
• Between coils in different phases
• Between a coil or phase and ground

Only about 5% of electrical faults begin as a fault to ground.  The other three fault types may or may not propagate into a ground fault  as the failure becomes advanced.  The short term result of these faults is reduced efficiency (and higher operating costs).  Symptoms include higher operating temperatures, perhaps nuisance tripping, and reduced motor life.  As faults advance, power and torque may decrease.  The longer-term result is always motor failure.