S T A C O E N E R G Y P R O D U C T S C O .

Power Problems

S T A C O E N E R G Y P R O D U C T S C O .

IntroductionIntroduction

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How do we look at power?How do we look at power?

S T A C O E N E R G Y P R O D U C T S C O .

Average AC SinewaveAverage AC Sinewave

S T A C O E N E R G Y P R O D U C T S C O .

IEEE defined power disturbancesIEEE defined power disturbances

TransientsInterruptionsSag/UndervoltageSwell/OvervoltageWaveform DistortionVoltage FluctuationsFrequency Variations

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TransientsTransients

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Positive Impulse TransientPositive Impulse Transient

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Oscillatory TransientOscillatory Transient

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InterruptionsInterruptions

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CausesCauses

S T A C O E N E R G Y P R O D U C T S C O .

Sag/Under voltageSag/Under voltage

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CausesCauses

S T A C O E N E R G Y P R O D U C T S C O .

UndervoltageUndervoltage

S T A C O E N E R G Y P R O D U C T S C O .

Swell / OvervoltageSwell / Overvoltage

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OvervoltageOvervoltage

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Waveform DistortionWaveform Distortion

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HarmonicsHarmonics

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InterharmonicsInterharmonics

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NotchingNotching

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NoiseNoise

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Voltage FlucuationsVoltage Flucuations

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Frequency VariationsFrequency Variations

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Voltage ImbalanceVoltage Imbalance

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Power DisturbancesPower Disturbances

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Power Supply TolerancePower Supply Tolerance

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ITIC Curve ITIC Curve (Information Technology Industry Council, formerly CBEMA)(Information Technology Industry Council, formerly CBEMA)

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ReferancesReferances