OPENED, STOPPED AND UNPLUGGED MACHINE

• Measure partial discharge off-line

• Measure insulation resistance i.r
  according to UQ602011C standard

• Determine polarization index i.p.
  according to ieee std 43-2000 standard

• Measure tangent of loss angle tan δ in winding insulation and its variation in δ tan δ
  based on voltage: 0.2 – 0.4 – 0.6 – 0.8 –rated voltage

• Measure μf winding of electrical windings respect to the mass, compared with same voltage
  present in the previous point test ground voltage
  according to UQ602010C standard

• Test balance of phases through ohmic resistance
  according to UQ602012C standard

• Test balance of phases through impedance z ohm
  according to ieee std 56-1977 standard

• Check up motor space heaters and thermoelements

• Check status of closures

• Check status of keys
  according to UQ602028C standard

• Check status of anti-effluvium protection

 

ROTOR OUT OF STATOR

• Measure insulation resistance i.r
  according to UQ602011C standard

• Check total static ohmic resistance and in every single pole
  according to UQ602012C standard

• Check total static impedance z ohm and in every single pole
  according to ieee std 56-1977 standard