Results 11 to 13 of 13
-
April 4th, 2019 11:38 PM #11
And what could be a better title?
I remember someone (*dr.d?) said that OT adds spice!
Anyways, there's no inquiry as I just wanted to share this. I had a hard time figuring what to do first and I had to turn everything upside down just to get the necessary information. You won't be able to get any information from those dockyard people
IR test (Megger test for others) is pretty much straightforward. Except that it is recommended to get DAR and PI values since you only have the opportunity to do this during drydock or if the plant (land-based) is shutdown.
It is actually the same. It is just "daunting" to do it for a generator since you don't normally do this on a regular basis. And most often than not, we would rather call a technician or a company engineer for this kind of job.
And yes, in a similar manner that I have benefited from joining this forum that I'd like to share. I know most of us here won't find it useful, this is a car forum, but hopefully someone will find it the way I intended it to be.
If I may add, most generators are connected in wye (star). If I'm not mistaken, it is for economical reason. You need less insulating material compared when connected to delta with the same power output. I'd like someone to confirm this or correct me on this.
-
Tsikoteer
- Join Date
- Nov 2009
- Posts
- 3,474
April 5th, 2019 12:00 AM #12In Telco field, we use IR test/megger during acceptance of copper cables. There are range of values per wire gauge and not sensitive with temp, TNV is also minimal to 48-70V. We use separate device to measure splicing losses, attenuation. In transformers, i guess that is temp sensitive.
-
April 5th, 2019 07:51 AM #13
Buhay na buhay ang BGC this evening. Bukas halos lahat ng restaurants. Sabi pa nung isang cashier...
Traffic!