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10/25/2017 7:56 AM | |
Joined: 8/4/2014 Last visit: 1/29/2024 Posts: 23 Rating: (1) |
Dears, I need your's help to find some more detailed information or data sheet about motor operated mechanism for air circuit breaker. - air CB type: 3WL9212-3AB31-0BA1Z (Z= A05 R30) - motor operated mechanism type: 3WL9111-0AF04-0AA0 - motor nameplate: Unkermotoren GR 53X30 / 220VDC / 0,29A / 47,2W / 4700rpm Information that I need is related to the power supply electronics (AC-DC converter ?) for DC motor. According to motor nameplate nominal voltage is 220VDC, measured output of AC-DC converter is 340VDC while input is 230VAC and that is confusing me little bit. I have double checked this motor power supply on another air CB and it is same 340VDC at output while input is 230VAC. Reason why I'm asking this is that yesterday I have found one damaged (burned) motor inside of air CB, I have removed it and manually charge spring to be able to continue plant operation. Please find attached pictures of damaged motor and air CB. Questions: 1) Is it normal to supply this motor with 340VDC? 2) Is there any datasheet about motor power supply electronics? I would like to understand what kind of AC-DC converter is used. Regards, Almen
AttachmentPictures.zip (171 Downloads) |
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