11/13/2007 7:33 PM | |
Posts: 16 Rating: (0) |
Hi Guys, One of our equipments experienced persistent blowing of surge arrester (over voltage protection). Test on grounding and insulation were concluded yielding satifactory results. The system is using Active Front End (AFE) - Inverter MC Masterdrives. Please see attached file detail info of DehnGuard SPDS Type 2, DG T 440. As of now, we temporarily removed arresters running the machine without itand works fine without problem. Please send any opinions or information regarding the solution of this problem. Reply is highly appreciated. GOOD DAY! Miller Attachmentpdbpdf2.pdf (260 Downloads) |
11/19/2007 7:41 PM | |
Posts: 16 Rating: (0) |
Thanks ROM. Attached herewith some details of AFE schematic diagram. Each AFE has its own CUSA and shared common DC bus link. MOV's of both AFE(s) aretied upon the same ground PE. We areconsidering an option to replace MOV'sby higher ratings to be implemented soon.Please see attached file, this may help in analyzing the cause of MOV's to blow abnormally. Good day! AttachmentAFE MASTER DRIVES.zip (262 Downloads) |
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