Our power quality analysers have accurate to a tenth of a percentage when it comes to current measurements, while most types of current clamps have accuracy that is measured in whole percentage points. Choosing the wrong type of current clamps for certain applications can have disastrous consequences for the quality of obtained measurements, making them unsuitable for serious troubleshooting and analysis.
We offer two types of current clamps: iron clamps and flexible (flex) clamps, operating on the Rogowski coil principle. Both have their advantages and disadvantages. Iron clamps are on average more accurate than flexible ones, while flexible clamps support larger current measurement range, from a few A to a few kA (up to 12 kA), and can be mounted on larger / more complex measured objects (measurement sensors up to 90 cm in length).
We also offer so-called Smart current clamps, which support multiple measurement ranges and auto-range selection by the connected instrument for great accuracy. However, the use of auto-ranging feature is discouraged for detection of inrush currents and current transients in favour of fixed range selection prior to use.
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