Short Circuit Current Measurements Between Transformer Sheets
In large transformer cores, burr-induced insulation faults between laminations can result in short-circuit currents which may be high enough to damage the core. This study presents measurements of the actual worst-case short circuit currents encountered in artificial interlamination shorts. A proced...
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| Veröffentlicht in: | IEEE transactions on magnetics 2010-02, Vol.46 (2), p.536-539 |
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| container_title | IEEE transactions on magnetics |
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| creator | Schulz, Carl A. Duchesne, StÉphane Roger, Daniel Vincent, Jean-NoËl |
| description | In large transformer cores, burr-induced insulation faults between laminations can result in short-circuit currents which may be high enough to damage the core. This study presents measurements of the actual worst-case short circuit currents encountered in artificial interlamination shorts. A procedure using an adapted miniaturized Rogowski coil is described. Results show that the maximum short circuit current is not proportional to the core width, but, except for extremely narrow cores, it increases with good approximation linearly with the core width. Peak currents can in large cores reach several amperes even when only two laminations are involved. |
| doi_str_mv | 10.1109/TMAG.2009.2032820 |
| format | Article |
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This study presents measurements of the actual worst-case short circuit currents encountered in artificial interlamination shorts. A procedure using an adapted miniaturized Rogowski coil is described. Results show that the maximum short circuit current is not proportional to the core width, but, except for extremely narrow cores, it increases with good approximation linearly with the core width. 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This study presents measurements of the actual worst-case short circuit currents encountered in artificial interlamination shorts. A procedure using an adapted miniaturized Rogowski coil is described. Results show that the maximum short circuit current is not proportional to the core width, but, except for extremely narrow cores, it increases with good approximation linearly with the core width. Peak currents can in large cores reach several amperes even when only two laminations are involved.</description><subject>Approximation</subject><subject>Circuit faults</subject><subject>Coiling</subject><subject>Coils</subject><subject>Current measurement</subject><subject>Extreme values</subject><subject>Faults</subject><subject>Insulation</subject><subject>Lamination</subject><subject>Magnetic cores</subject><subject>Magnetism</subject><subject>Mathematical analysis</subject><subject>Power transformer insulation</subject><subject>Short circuit currents</subject><subject>Stator cores</subject><subject>Steel</subject><subject>Transformer cores</subject><subject>Transformers</subject><issn>0018-9464</issn><issn>1941-0069</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNp9kDFPwzAQhS0EEqXwAxBLxAJLis92HHtgKBUUpFYMLbPluBc1VZMUOxHi3-OqFQMDy7076bvTu0fINdARANUPy_l4OmKU6lg4U4yekAFoASmlUp-SAaWgUi2kOCcXIWziKDKgA_K4WLe-SyaVd30Vtfcemy6Zow29xzr2IXnC7guxSZbeNqFsfY0-WawRu3BJzkq7DXh11CH5eHleTl7T2fv0bTKepY5neZeCQCtymUPpuFSFlJBzZm0mskIwp1S-Au2s1IXTmSwLuXJCUapyFFggrAo-JHeHuzvffvYYOlNXweF2axts-2BUnlGupYZI3v9LQnTBhJKMRfT2D7ppe9_EP4zKokeVMx0hOEDOtyF4LM3OV7X13wao2Sdv9smbffLmmHzcuTnsVIj4y2dcc-CM_wAsiX3C</recordid><startdate>20100201</startdate><enddate>20100201</enddate><creator>Schulz, Carl A.</creator><creator>Duchesne, StÉphane</creator><creator>Roger, Daniel</creator><creator>Vincent, Jean-NoËl</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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This study presents measurements of the actual worst-case short circuit currents encountered in artificial interlamination shorts. A procedure using an adapted miniaturized Rogowski coil is described. Results show that the maximum short circuit current is not proportional to the core width, but, except for extremely narrow cores, it increases with good approximation linearly with the core width. Peak currents can in large cores reach several amperes even when only two laminations are involved.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/TMAG.2009.2032820</doi><tpages>4</tpages></addata></record> |
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| ispartof | IEEE transactions on magnetics, 2010-02, Vol.46 (2), p.536-539 |
| issn | 0018-9464 1941-0069 |
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| source | IEEE Electronic Library (IEL) |
| subjects | Approximation Circuit faults Coiling Coils Current measurement Extreme values Faults Insulation Lamination Magnetic cores Magnetism Mathematical analysis Power transformer insulation Short circuit currents Stator cores Steel Transformer cores Transformers |
| title | Short Circuit Current Measurements Between Transformer Sheets |
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