One Really Overpriced MOV - Page 1
Forum section: electronics / general

author: Sionyn
author_rank: Frequent Contributor
timestamp: December 28, 2012, 09:53:49 am
content: http://www.dailymail.co.uk/sciencetech/article-2251815/Thumbnail-sized-component-save-7m-British-project-drill-signs-life-arrives-Antarctic-ice.html

author: amyk
author_rank: Super Contributor
timestamp: December 28, 2012, 10:41:20 am
content: QuoteAny idea where those faulty controllers were made?

author: peter.mitchell
author_rank: Super Contributor
timestamp: December 28, 2012, 10:52:33 am
content: Maybe they should fix the supply voltage?

author: G7PSK
author_rank: Super Contributor
timestamp: December 28, 2012, 04:24:01 pm
content: It is hard to believe that they did not have a few more spares available on site also that they could not bypass the mov in some way. The really incredulous thing is that they were employing such flimsy equipment in that sort of conditions, it dose not take an Einstein to realize that a generator will have quite large transients on it and all equipment connected will need to be able to survive such events.

author: PA0PBZ
author_rank: Super Contributor
timestamp: December 28, 2012, 04:30:06 pm
content: Just wondering how long the one they sent over is going to last.

author: ecat
author_rank: Frequent Contributor
timestamp: December 28, 2012, 04:41:52 pm
content: Quote from: PA0PBZ on December 28, 2012, 04:30:06 pmLong enough for them to encounter another problem I'm sad to say. Project abandonedhttp://www.ellsworthlive.org.uk/

author: SeanB
author_rank: Super Contributor
timestamp: December 28, 2012, 05:43:07 pm
content: Probably it would have been better to have sent a replacement voltage regulator for the genset so it did not cook the controllers. They probably worked perfectly on the mains when tested, and the genset probably did as well, but did not like the load presented to it, most likely from it being a really badly balanced one. Most 3 phase gensets do not like a light load on one phase and a heavy load on the others, especially if the lightly loaded one is not the one used for voltage regulation, where the heavy load on the others causes the one phase voltage so climb very high as the genset compensated for the winding losses.

author: M. András
author_rank: Super Contributor
timestamp: December 28, 2012, 11:14:01 pm
content: wonder how much that stuffs worth what they have there and what was the manufacturing price compared to it//offam i the only one who immediatly remembered the particular episodes of x-files when i saw the lake drilling photos?//

author: peter.mitchell
author_rank: Super Contributor
timestamp: December 29, 2012, 03:07:42 am
content: Quote from: M. András on December 28, 2012, 11:14:01 pmnope, but i did remember the episode where they were in the Arctic and people were going crazy

author: lewis
author_rank: Frequent Contributor
timestamp: December 29, 2012, 03:53:48 am
content: Quote from: ecat on December 28, 2012, 04:41:52 pmFOR GOD SAKE, CAN'T WE DO ANYTHING IN THIS FUCKING COUNTRY ANY MORE! Where's the 'Great' in Great Britain?Run out of fuel? So what! Get some more you bastards! And before anyone says 'Well Lewis, it's not that easy getting a load of fuel to Antarctica you know...', you're trying to drill a hole 3km through a solid chunk of ice! Getting fuel on a plane is/should be the easy bit! COME ON!Stop giving up you wimpy namby pamby bastards! Get on with it, get the bloody hole dug, let's have a look at some alien bacteria and put the Great back into Britain. This "oh dear, we tried a little bit, but it's just too hard, let's all go home and have a cup of tea" mentality is killing this bloody country everywhere from primary school to south pole.Edit - sorry, that was a bit of a late night rant...