Plant Name: nptps Equipment: odp Coordinator: sachin raut Analyst : s v sahastrabuddheDate: 04/04/2014 16:35:14File name: C:\AREVA\3 - PHASE AC MOTOR\UNIT 6\RWP A003(HI)

Empath 2000 6.23 Analysis ResultsPERFORMANCE SUMMARYBottom Line X This induction motor is operating normally, no action is required. This induction motor exhibits suspicious operation, trending of the induction motor is warranted. This induction motor exhibits abnormal indications, action is warranted, NOW.

Power Factor Commentary X Power factor exceeds 0.85. Power factor is below 0.85, see detailed report.

Current Commentary X Current variation is within normal limits. Current variation is beyond normal limits, see detailed report.

Voltage Commentary X Voltage variation is within normal limits. Voltage variation is beyond normal limits, see detailed report. RMS voltage differs from nameplate by more than 5%.

Load Commentary X Load on the induction motor is consistent with nameplate values. Load on the induction motor exceeds nameplate values, see detailed report. Load on the induction motor is less than 25%.

Phase Connection Commentary X Connections are normal. Voltage ground reference is NOT neutral. Loose connection.

Rotor Commentary X Rotor bar health is normal. Rotor bar health is questionable, see detailed report. Load is insufficient to determine rotor bar health, at this time.

Stator Commentary X Stator health is normal. Stator electrical health is questionable. Stator mechanical health is questionable. . Turn to turn short.

Rotor/Stator Air-gap Characteristics X Dynamic or static eccentricity indications do not exist. Indications of static eccentricity exist . Indications of dynamic eccentricity exist.

Harmonic Distortion Commentary X There is no evidence of harmonic distortion. There is evidence of harmonic distortion, see detailed report.

Misalignment Indications X There are no indications of mechanical problems like misalignment or unbalance. There are indications of mechanical problems like misalignment / unbalance. Perform vibr. survey to identify and correct the cause.

Bearing Commentary X There is no evidence of bearing problem. Indications of potential bearing problems, perform vibration survey to verify.

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Plant Name: nptps Equipment: odp Coordinator: sachin raut Analyst : s v sahastrabuddheDate: 04/04/2014 16:35:14File name: C:\AREVA\3 - PHASE AC MOTOR\UNIT 6\RWP A003(HI)

INPUT SUMMARY

NAMEPLATE INFORMATIONUnits

Manufacturer cromptonSerial Number 217718Model Number ****Tested Equipment InductionPower 90.0 KWRPM 1475.0 RpmPoles 4Phases: 3Voltage 440.0 VoltFull Load Current 157.00 AmpNumber of rotor bars -1Number of stator slots -1Torque 582 N.mCT Ratio 1.000PT Ratio 1.000Duty Cycle s1Service Factor 115Frame Size 280smInsulation Type fAmbient Temperature 70.0 FMotor efficiency -1.000Power factor -1.000

Description:

Detailed Calculations

LEGENDS:Impedance = Complex Impedance = vi/ciCF = Crest Factor = (waveform peak)/(waveform rms)CFC = Carrier Frequency Content = 10^(x/20)/frms, %THDF = Transformer Harmonic De-rating Factor = sqrt(2)/CF, %VDF = Voltage De-rating Factor = 100 - (voltage unbalance, %)^2, %Se, fund = Location of pole pass frequency fundamental, Hz Se, harm = Number of pole pass frequency harmonicsLevel = Sum of spectral amplitudes of pole pass frequency fundamentals and harmonicsSlip % = SRSS sum of slip and harmonic "levels" divided by RMS level of RMS DEMOD spectra between 0 and 65 Hz.Upper sb = dB level of upper slip sideband of power line peakLower sb = dB level of lower slip sideband of power line peakRotor bar health = Estimate of the percent of broken or cracked rotor barsThd = Total harmonic distortion+Ve = Positive sequence harmonic-Ve = Negative sequence harmonicZero = Zero sequence harmonicRB Hlt Index = Rotor bar health index

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Plant Name: nptps Equipment: odp Coordinator: sachin raut Analyst : s v sahastrabuddheDate: 04/04/2014 16:35:14File name: C:\AREVA\3 - PHASE AC MOTOR\UNIT 6\RWP A003(HI)Running Speed = 24.805 Hz [1488 RPM]Pole pass frequency = 0.619 Hz [37 RPM]Load = 104.7 %

TimeRMS Peak CF

Current 1 161.180 230.860 1.432Current 2 155.330 223.200 1.437Current 3 157.420 225.180 1.430Average 157.980 226.420 1.433% dev 2.0 2.0 0.3

THDF = 98.7

TimeRMS Peak CF

Voltage 1 423.810 603.890 1.425Voltage 2 418.430 596.660 1.426Voltage 3 420.960 598.350 1.421Average 421.070 599.630 1.424% dev 0.7 0.7 0.2

VDF = 99.6

App. Power Real Power Reac. PowerPower factor Impedance kVA kW kVARS

Phase 1 0.863 2.629 39.345 33.942 19.898Phase 2 0.872 2.694 37.759 32.940 18.458Phase 3 0.885 2.674 38.110 33.732 17.734Avg/Total 0.873 2.666 115.210 100.610 56.090% dev 1.3 1.4

Demand Pwr = 100.6 KWLoad:104.7 %Motor Eff.:93.6 %Loss due to THD:1.07 %Loss due to Imp.Unb.:1.36 %PF variance:0.41%Output Pow.:91.93 KWOutput Trq.:589.4 N.m

Summary of Rotor Bar Health Power line dB diff. RB Hlt IndexSe, fund Se, harm Level % Upper SB Lower SBMeasured 0.619 1 - -81.6 -98.3 0.0038

Severity level Rotor Condition Assessment Recommended Corrective Action1 Excellent None

Bearing conditionLocation Bearing No. IR OR T/C BS

Drive end SKF 6316 OK OK OK OKOpposite end SKF 6315 OK OK OK OK

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Plant Name: nptps Equipment: odp Coordinator: sachin raut Analyst : s v sahastrabuddheDate: 04/04/2014 16:35:14File name: C:\AREVA\3 - PHASE AC MOTOR\UNIT 6\RWP A003(HI)

Harmonic Distortion Results:Voltage input, from 49.976 Hz harmonics

THD Odd %

THD Even % +ve% -ve % Zero % THD All %

Current 1 0.569 0.115 0.366 0.325 0.310 0.580Current 2 0.703 0.111 0.336 0.392 0.489 0.711Current 3 0.546 0.134 0.355 0.348 0.263 0.562Voltage 1 0.430 0.077 0.278 0.262 0.212 0.436Voltage 2 0.430 0.057 0.231 0.294 0.219 0.433Voltage 3 0.353 0.114 0.185 0.312 0.079 0.371

Harmonic distortion tableHz Cur1 Vlt1 Cur2 Vlt2 Cur3 Vlt350 227.9 345 219.6 344 222.6 342100 0.3 0 0.2 0 0.3 0150 0.7 1 1.1 1 0.6 0200 0.1 0 0.1 0 0.1 0250 0.5 1 0.6 1 0.5 1300 0.0 0 0.1 0 0.0 0350 0.7 0 0.6 0 0.7 0400 0.0 0 0.0 0 0.0 0450 0.1 0 0.1 0 0.1 0500 0.0 0 0.0 0 0.0 0550 0.5 0 0.6 0 0.6 0600 0.0 0 0.0 0 0.0 0

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Plant Name: nptps Equipment: odp Coordinator: sachin raut Analyst : s v sahastrabuddheDate: 04/04/2014 16:35:14File name: C:\AREVA\3 - PHASE AC MOTOR\UNIT 6\RWP A003(HI)

Figure- 1: Current harmonic distortion plot

Figure- 2: Voltage harmonic distortion plot

Figure- 3: Raw Current

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Plant Name: nptps Equipment: odp Coordinator: sachin raut Analyst : s v sahastrabuddheDate: 04/04/2014 16:35:14File name: C:\AREVA\3 - PHASE AC MOTOR\UNIT 6\RWP A003(HI)

Figure- 4: Raw Current Frequency spectrum

Figure- 5: Raw Voltage

Figure- 6: Raw Voltage Frequency spectrum

Figure- 7: Demodulated current tracePage 6 of 7

Plant Name: nptps Equipment: odp Coordinator: sachin raut Analyst : s v sahastrabuddheDate: 04/04/2014 16:35:14File name: C:\AREVA\3 - PHASE AC MOTOR\UNIT 6\RWP A003(HI)

Figure- 8: Raw current spectrum

Figure- 9: Demodulated current spectrum

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