After-sales service case 4: brushless dc motor in the south of anhui anqing two YZQ - a centrifuge factory feedback315年代4 V6 415 v / 50 hz brushless dc motor in the same equipment in the same control system, one works, one cannot start, customers don't think you can do starting a brushless dc motor must have a fault, brushless dc motor after returned to the factory to do the full performance test, the result all Normal, revertetur ad user ad test iterum post defectum manet. De-site inspectionem processus et results: primo, reprehendo in apparatu et qualis est potentia copia, omnes apparatu est normalis, in potentia copia CCCXCV V / L HZ, CDXV Voltage non est in conformitate cum Brushless Dc motricium non est in conformis cum Brushless Dc motricium non est in conformis cum Brushless DC motricium. Secondly, to confirm the equipment is normal, the equipment is installed on a YZQ -315年代4 V6 380 v / 50 hz brushless dc motor testing, star -Triangle conversion starting, conversion time of 300 s, starting current 280 a, 60 s 252 a, 120 s 230 a, 180 s 205 a, 240 s began to rapid decline in 30 years, the 300 s when run into a triangle, the current 81 a, normalis operatio. Tertio, confirmare apparatu normalis post originale CCCLXXX V / L HZ Brushless DC motricium replacement pro CDXV V / L HZ, non-onus incipiens CCLXXXVII a, usque ad Current V Current Current CCLXXXVII est normalis. Fourth, after the no-load test normal install belt, belt centrifuge starting, starting current 287 a, star 60 s 251 a, 120 s 233 a, 180 s 216 a, 240 s 204 a, 300 s when run into a triangle, current rapid increase to 580 a, over-current protection movement, the starting failure. Fifth, analysis of 380 v / 50 hz starting data, starting from the 240 s when the rapid decline in current, in the 415 v / 50 hz BLDC motor starting failure before there has been no significant current decline, estimation is the starting time is not enough, after the user agrees to fuses iconic -Triangle conversion time increased to 350 s, before the 300 s, as the first test, starting from the 310 s current rapid decline, 340 S Current pro XXI A, CCCL s transform triangular operationem, current est LXXI a, satus ad metam, omnia bene. Case analysis: field test voltage is 395 v / 50 hz, and brushless dc motor is used export, rating of 415 v / 50 hz, because of the brushless dc motor torque is proportional to the voltage, the voltage drop caused by starting torque smaller, resulting in the star of brushless dc motor running 300 s was not fully start, speed not close to the rated speed, at the moment is converted into a triangle secondary starting Operatio de Brushless DC motricium, magna incipiens current, ita in-current tutela actio, incipiens post extensio in conversionem tempus est normalis, in ipsa tempus solum XV s. Quare duo CDXV V / L HZ a normalis a Brushless DC motricium non operatur, quia duo Brushless DC motricium scriptor incipiens torque est parva, et sicut incipiens tempus etiam XV s. Hic articulus per Brushless DC motricium in meridiem Anhui Anhui co. , Ltd. Originale, reproduci placet indicare fons.
