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1.2 Product Overview
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1
Chapter 1 Overvie
w
The PQ3198 Power Quality Analyzer is an analytical instrument for monitoring and recording
power supply anomalies, allowing their causes to be quickly investigated. The instrument can
also be used to assess power supply problems (voltage drops, flicker, harmonics, etc.).
1.2 Product Overview
Record abnormal waveforms
Record voltage fluctuations
Observe power supply waveforms
Measure harmonics
Measure flicker
Measure power
One instrument does it all!
How does the PQ3198 record abnormal waveforms?
The instrument automatically judges and records a range of problems.
Transient voltages
Transient voltages are caused by lightning strikes, circuit-breaker and relay
contact obstructions and tripping, and other phenomena. They are often char-
acterized by precipitous voltage variations and a high peak voltage.
Flicker (
Δ
V10, IEC)
Flicker is caused by blast furnace, arc welding, and thyristor control loads. The
resulting voltage fluctuations cause flicker in light bulbs and similar phenom-
ena.
Voltage dips (falling voltage)
Short-lived voltage drops are caused by the occurrence of a inrush current with
a large load, such as when a motor starts.
Interruptions
In an interruption, the supply of power stops momentarily or for a short or long
period of time due to factors such as a circuit breaker tripping as a result of a
power company accident or power supply short-circuit.
Voltage swells (rising voltage)
In a voltage swell, the voltage rises momentarily due to a lightning strike or the
switching of a high-load power line.
Harmonic and high-order harmonic elements
Harmonics are caused by distortions in the voltage and current caused by the
semiconductor control devices that are frequently used in equipment power
supplies.
Transient voltages
Voltage dips
Voltage swells
Interruptions
Harmonic
Flicker
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Содержание PQ3198
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Страница 20: ...Usage Notes 14 HIOKI PQ3198A961 03...
Страница 44: ...2 3 Display Items and Screen Types 38 HIOKI PQ3198A961 03...
Страница 58: ...3 8 Turning the Power On and Off Setting the Default Language 52 HIOKI PQ3198A961 03...
Страница 102: ...5 8 Factory Settings 96 HIOKI PQ3198A961 03...
Страница 116: ...6 4 Displaying Harmonics 110 Holding the display Hold Measured values and waveforms will be held HIOKI PQ3198A961 03...
Страница 198: ...12 4 Downloading Recorded Data to Computer 192 HIOKI PQ3198A961 03...
Страница 264: ...14 4 Disposing of the Instrument 258 HIOKI PQ3198A961 03...
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Страница 299: ...Index Index 3 Index Wiring 73 Z Zero adjustment 53 Zero phase A28 HIOKI PQ3198A961 03...
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