Timeline for Transformer open secondary
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 22, 2019 at 3:31 | comment | added | K H | 100:1 not 10:1 lol | |
| Jan 22, 2019 at 2:49 | comment | added | K H | Resistance test for continuity, Meggar test for insulation, maybe inductance test against a new one for shorted windings. | |
| Jan 22, 2019 at 2:39 | comment | added | Steve | Alright thanks. Is there any way if I can tell if I have damaged the coil? | |
| Jan 22, 2019 at 0:54 | comment | added | K H | Usually when one is opened while operating you would have an arc of a voltage that depended on the actual resistance of the "open circuit" and a current that was proportional to that on the primary, so the only power limitation is the capability of the system on the primary side and however much the resistance/impedance of the arc is limited. If the primary is 600V 500A and it's a 10:1 CT, it will produce a 5A output at up to 60000V. Hmm.... Maybe it would actually work if current limited this way, but I think yours is a VT anyway. | |
| Jan 22, 2019 at 0:42 | comment | added | Steve | Ok thanks. Could damage be avoided to a current transformer if a low enough current was used? | |
| Jan 22, 2019 at 0:34 | comment | added | K H | I would guess it is a voltage transformer because of multiple references to specifically 30000 V, but I wanted to include mention of CTs because you might not know either and the difference is important, also because the question is specifically about an open circuit on a secondary, which is a very dangerous state for a CT. | |
| Jan 22, 2019 at 0:19 | comment | added | Steve | Alright cool. So is the coil in the link a voltage transformer or a current transformer? How can you tell? autopartssupply.com.au/… | |
| Jan 21, 2019 at 20:43 | history | answered | K H | CC BY-SA 4.0 |