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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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CASR-25-NP Fiches technique(PDF) 2 Page - LEM |
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CASR-25-NP Fiches technique(HTML) 2 Page - LEM |
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2 / 24 page  RS I Compensation VOUT +5V GND Fluxgate Interface Filter Driver Diff Amp VREF Int. ref ICOMP2 ICOMP1 IP Primary conductor Magnetic Core Fluxgate Compensation Winding The Power Electronics market is in constant change and always on the lookout for new technologies and better performance driving our progress. To enable applications with enhanced performance, current measurement must always been made with the best possible performance also allowing to the final application to differentiate itself from all the others. This is the human nature and allows the progress of technology. With the LTS / LTSR current transducers using the Closed Loop Hall effect technology coupled with a dedicated ASIC (Application Specific Integrated Circuit) specially designed for these products, we thought we had reached the optimal performance, but this was without taking the eternal human nature into account. The market required even better accuracy over the temperature ranges maintaining a low price and LEM decided to achieve this goal. A few months later, LEM delivers the solution with the CAS / CASR / CKSR current transducers series covering nominal current measurements from 1,5 to 50 A RMS. To respond to these new challenges, the Hall effect technology was no longer the solution. Even if used in a Closed Loop configuration and with the use of a dedicated ASIC as done with the LTS family which allowed a substantial performance improvement notably for the accuracy and the size. Fluxgate technology was selected enabling both possible targets: the improvement in accuracy and the low price. Without compromising the advantages of the LTS product such as size, dynamic performances, high measuring range, ect. LEM has already been using multiple Fluxgate technologies in the past and it was just a question to find the one making the best comprise between price, size and performances. In order for the products to be able to work in the typical industrial applications, the insulation criteria needed to be respected and a particular attention has then been brought to the mechanical design of the product. Although we were able to reduce the size even when nobody thought it could still be done, the insulation performances allow usage in standard industrial applications without particular mounting with a rated insulation voltage up to 1000 V RMS (Simple isolation according to EN 50178 standard with following parameters: OV 3, PD2). The CAS / CASR / CKSR models have been specially designed to respond to the technology advances in drives and inverters in industrial environment requiring better performances in areas such as: • Common mode influence • Thermal drift (offset and gain) • Accuracy (in the whole temperature range) • Response time • Insulation • Size 2 CAS / CASR / CKSR series Current Transducers Insulated Highly Accurate Measurements from 1.5 to 50 A RMS Future precision. Future performances. Now available. |
Numéro de pièce similaire - CASR-25-NP |
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Description similaire - CASR-25-NP |
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