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Capture all power anomalies without fail!
Problems with power quality are all around us
Have you ever experienced any of the following ?
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Flickering lights
Light bulbs burn out quickly
Electronic office equipment does not function properly
Sometimes devices operate abnormally
Overheating in facilities using condensers fitted with
reactors
• 3E (electrical overload, reverse phase, or phase loss) relays
sometimes trip
These types of problems and others are often due to degraded power quality.
Discovering the cause can be difficult
The quickest way to solve power problems is to have a clear
understanding of the cause, and be able to determine where the
phenomenon occurred. However, it is not always possible to
accurately grasp all of the various types of anomalies that may
occur on power lines, even when using recording or harmonic
analysis devices to investigate them.
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Dedicated measuring instruments are required in
order to accurately grasp these kinds of anomalies.
Fully identify the many phenomena hiding in your power lines
Overlooking the smallest of power anomalies
can lead to enormous financial loss. Checking
the quality of your power lines is the best way to
prevent problems before they occur.
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Transient Overvoltage (Impulse)
Phenomenon :
Occurs due to lightning or circuit breaker/relay
contact damage or closure. Often involves
radical changes in voltage with high voltage
peaks.
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Instantaneous interruptions
Phenomenon :
An instantaneous or short/long term power
supply interruption caused by accidents at the
power company (such as interruption of power
transmission due to lightning strike) or tripping
of breakers due a power supply short.
Damage :
Thanks to the increasingly widespread
adoption of uninterruptible power supplies, equipment such as computers
is increasingly protected against this problem. However, it may still cause
other devices to stop operating or reset.
Damage :
In the vicinity of the event, high voltage often
damages equipment power supplies or causes
devices to reset.
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Harmonics
Phenomenon :
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Voltage Dip
Phenomenon :
Caused by momentary voltage drops resulting
from large rush current in loads, such as when
starting up a motor.
Often occurs due to voltage/current waveform
distortion when a semiconductor control device
is used in a device's power supply.
Damage :
When harmonic components become too
large, they can cause serious malfunctions, such as overheating in motor
transformers, or burn-out of reactors connected to phase advance capacitors.
Damage :
The drop in voltage may cause devices to stop
operating or reset.
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Unbalance factor
Phenomenon :
Voltage/current waveform distortion and voltage drops
or voltage phase reversals can occur when the load
on a particular power line phase increases due to load
fluctuations or imbalances.
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Voltage Swell
Phenomenon :
Caused by lightning strikes or opening/closing
power lines with heavy loads, causing the
voltage to swell momentarily.
Damage :
Damage :
The surge in voltage may damage equipment
power supplies or cause devices to reset.
Voltage imbalance, reverse phase voltage, and
harmonics can result in events such as uneven motor
rotation, tripping of 3E breakers, and overheating due
to transformer overloading.
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Flicker (IEC, ∆V10)
Phenomenon :
Caused by blast furnaces, arc welding, and
thyristor-controlled loads, and involving
regularly repeated voltage impulses spanning
one or more cycles.
Damage :
Because this phenomenon is cyclically repeated, it may cause lights to
flicker or devices to malfunction.
The 3196 can
simultaneously
measure, record, and
analyze all of the above
phenomena.
ASM-SENSOR [ ASM GMBH ]
