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Power Quality Basics

New to the topic of power quality? Follow this content and you'll know how to find potential failures in your systems faster than ever!

Future proofing your Power Quality measurement equipment with IEC 61000-4-30 third edition

What is IEC 61000-4-30 standard? The IEC 61000-4-30 standard ensures that the measurement results from Power Quality analyzers and loggers of different makes and models match up; so measurement results are comparable without any doubts. This is extremely important, especially...

Five key test points to understand motor drive efficiency and performance

Motor drives are a well-known technology for transforming the constant voltage from the main ac power supply into a voltage that varies to control motor torque and speed ideal for motors that are driving mechanical equipment loads. Motor drives...
power quality symptoms and causes

Quick guide to power quality symptoms and causes

To the untrained eye, problems in electrical distribution systems or the equipment connected to the circuit may not be recognizable as power quality problems. When no immediate problem is apparent, it may be written off as just an old...

What are voltage sags, dips, swells and transients?

Electrical and electronic equipment is rated for operation at a specific voltage. Voltage sags, swells, and transients can cause trouble with industrial controls as well as equipment such as computers. Overvoltage surges are generally more damaging to equipment than...
Harmonics

Harmonics – where do they come from?

Harmonics can cause all sorts of problems: tripped relays, failed transformers, damaged capacitor banks and even cracked motor shafts. But where do they come from, and how do you cure them? Non-linear loads like low-energy lights, VSDs, switched-mode power supplies...

Why is there an arrow on your current clamp?

As you can see in the images above, on all current clamps and current clamp accessories there is an arrow placed on there, close to the beak or inside the beak opening. So what should we do...

Understanding the basics of electrical power

Electrical power usage is changing constantly. It means load on the electric network is changing: more harmonics and unbalance. This so-called 'bad' power costs money and wastes energy. To deal with this, we often need more understanding of the...

Choosing the right current clamp

Many users of an energy logger, power logger or power quality analyzer usually use the tool’s supplied current clamp in their application. Since the supplied clamp has a specific measurement range, it’s very well possible that it doesn’t fit...

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Choosing the right current clamp

Many users of an energy logger, power logger or power quality analyzer usually use the tool’s supplied current clamp in their application. Since the...

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