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385 Galvanic Isolator |
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Clouded Pearl
Captain Joined: 20 November 2013 Location: UK Status: Offline Points: 214 |
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Posted: 01 January 2014 at 14:29 |
I have just fitted a failsafe galvanic isolator to my second hand 385 as I could not find one fitted already. Since then, I have come across various posts on other Hanse models and some have suggested these are fitted as standard.
I know it sounds like I'm being dumb (sorry) but when I was pricing a new 385 in the UK in September before opting for 2nd hand, a galvanic isolator was not a factory fit option. To anybody who has bought a 385 new, please can you tell me if a G I is installed as standard and if so, where, as I looked high and low in the shorepower earth before it connects to the fuse panel. Thanks, Geoff Edited by Clouded Pearl - 01 January 2014 at 14:31 |
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GrainDeSel
Commander Joined: 04 August 2013 Location: France Perros-g Status: Offline Points: 86 |
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geoff
In my H385#139 a galvanic is installed as standard. It is in the the port side cockpit box
Regards
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Best regards
Jean-Marie H385#139 june 2012 |
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Clouded Pearl
Captain Joined: 20 November 2013 Location: UK Status: Offline Points: 214 |
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Interesting. Definitely not there on mine but it is an early one, hull no 12
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Manyata
Lieutenant Commander Joined: 31 December 2013 Location: Lowestoft, UK Status: Offline Points: 74 |
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Hi
Same as previous post - my Hanse 385 #213 - GI fitted as standard in port cockpit locker - aft end of locker fitted high up out of sight. Regards Tim |
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Clouded Pearl
Captain Joined: 20 November 2013 Location: UK Status: Offline Points: 214 |
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Hmmmmm. I may not have looked carefully enough. If it is there, I'll just bypass it and run the earth through the new one which I've already fitted and keep the old one installed in situ. Thanks.
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richz
Captain Joined: 02 September 2013 Location: Milan Status: Offline Points: 242 |
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Interesting thread. I've ordered a new 345 and I was planning to install a galvanic isolator. Can anyone confirm whether the yard is installing this as standard also on the 345?
Thank you and Happy New Year to everyone! |
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Clouded Pearl
Captain Joined: 20 November 2013 Location: UK Status: Offline Points: 214 |
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Hi. You could email your Hanse agent (Inspiration Marine?)and they should confirm.
One thing I have learned about this issue is there are essentially 2 types of GI : standard and 'failsafe'. If the unit fails, through lightning strike, surge or whatever, the diodes in the GI blow. In the standard GI, they fail 'open', meaning the earth on your shore power is lost. As all metal parts on the Hanse are (or certainly should be) 'bonded' to earth, if you then get an AC short circuit on a device like your 240v kettle, the RCD will not trip and there is then a real risk of all metal parts being 'hot' ie live. This is not good if you value your life! Apparently there was some research done in the UK a while back and something like 5% of boats tested had a faulty GI which was not working. Apart from the corrosion issue this would pose, it is a more of a concern if you have a 240v appliance short circuit thereafter and the RCD does not trip because there's no earth. A failsafe GI fails 'closed' ie the diodes fail closed and so the shore earth remains intact so RCD protection remains. I have noticed from some of the pictures taken of the factory fitted GIs that they seem to be the standard version. The following link shows the most common types that seem to be fitted in the UK: http://www.sterling-power.com/products-galvanic.htm Most of the ones I have seen in the photos on this forum are the black box type which I believe are the standard versions. For safety, if these are used, they should be linked to a warning guage which alerts the user to a failure of the GI so that they can fix this before any AC appliance subsequently fails and poses a risk of electrocution. I ended up fitting the Pro Safe FS 60. Have a read on the above site and it explains why this is safer. If it fails, granted, you end up back to square one where you have a risk of galvanic corrosion until you fix the device, but that's maybe better than electric shock! I test the GI every month as part of a routine checklist. This can be done using a simple multimeter in 'diode mode'. I would check with the agent what type, if any, is being fitted I hope this helps? Regards. Geoff Edited by Clouded Pearl - 02 January 2014 at 09:42 |
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richz
Captain Joined: 02 September 2013 Location: Milan Status: Offline Points: 242 |
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Hi Geoff, thanks a lot for your e-mail. I will check with my dealer. I was planning to install the ProSafe FS 30 (which should be enough for my boat). regards, rich |
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Silver
Lieutenant Joined: 19 March 2013 Location: Italy Status: Offline Points: 26 |
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Hi Richard,
I can tell you that it was installed as standard in my Hanse 345 hull # 51, delivered in May 2013. To tell you the truth, the guy that was showing me my boat when I was visiting the yard just before delivery was unaware of this when I asked, but I did found it during my inspection It is in the upper part, aft side, of the left locker, just as in the case of the 385 I see. Anyway, it is right to say that it is not quoted in the spec sheet, so you'd better ask your dealer to stay on the safe side. I take the opportunity of wishing a great 2014 to everyone. Cheers, Maurizio |
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Hanse 345 # 51 Performance sails Volvo D1-30 KiwiProp Coppercoat
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richz
Captain Joined: 02 September 2013 Location: Milan Status: Offline Points: 242 |
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hi Maurizio,
Thanks! will definitively check with my dealer. Cheers, Rich |
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