Apparently the sales staff at BEP aren't in synch with the support staff...
Thanks for following up, James.
-Tom
--- In electricboats@yahoogroups.com, James Lambden <james@...> wrote:
>
> Tom,
>
> Here is the email I received from BEP.
>
> James
>
>
> Propulsion Marine Products by
>
> Above the Waterline, Ltd.
>
> http://www.propulsionmarine.com
>
>
> Hello James
> The 720 has a nominal rating of 48volts DC. 58 volts would be OK.
>
>
> Ian Hunt
> Technical Support
>
>
>
> BEP Marine Marinco Electrical Group
> AFI-ANCOR-BEP- GUEST-MARINCO-NICRO
> DDI: +64 9 414 1365
> Phone: +64 9 415 7261
> Mobile: +64 21 456 857
> Fax: +64 9 415 9327
> Email: ihunt@...
> Skype: ian.hunt99
> 13 Tarndale Grove, Albany 1311
> Auckland, New Zealand
> Web address: www.bepmarine.com
>
> Is it going to be used as an isolator only. Or is it going to be switching a load.
>
> Regards
>
> NAME: James Lambden
>
> EMAIL: sales@...
>
> CITY: Santa Barbara
>
> MESSAGE: Does your heavy duty battery switch handle 48 volts nominal (charging voltage up to 58 volts) or is it rated at 48 volts maximum
>
>
> ----------------------------------------------------------
> Submitted on 02-10-2010 06:11:46 from ip 98.108.208.135
>
> Actuant Corporation Email Notice
>
> This message is intended only for the use of the Addressee and may contain information that is PRIVILEGED and/or CONFIDENTIAL.
> This email is intended only for the personal and confidential use of the recipient(s) named above. If the reader of this email is not an intended recipient, you have received this email in error and any review, dissemination, distribution or copying is strictly prohibited.
> If you have received this email in error, please notify the sender immediately by return mail and permanently delete the copy you received.
>
> Thank you.
>
>
>
>
>
>
>
> On Jul 24, 2011, at 1:19 AM, Tom wrote:
>
> >
> >
> > I apologize for a bit of thread drift here, but the comment made earlier about the max voltage rating for Blues Seas battery switches vs BEP Marine switches caught my attention, since I am using a Blue Seas switch in my boat.
> >
> > I sent BEP an e-mail asking whether the 48V rating of their switches was nominal or maximum. Their response is that their product is rated at 48V max.
> >
> > Maybe the BEP switch mentioned earlier is a custom switch? If so, I'd like to know more about it.
> >
> > Here's the e-mail exchange:
> >
> > HI Tom
> > Sorry they will not be suitable for your application as they are rated to a maximum 48volts
> > Regards
> > Mike
> >
> > Michael Conway
> > Sales Representatve
> > BEP Marine
> > DDI: +64 9 414 1369
> > Phone: +64 9 415 7261 ext 724
> > Fax: +64 7 415 9327
> > Email: mconway@...
> > 55 Paul Mathews Rd
> > Albany 1311
> > Auckland
> > New Zealand
> > Web address: www.bepmarine.com
> >
> > Important Notice: BEP Marine will be closed for our annual stock count from 8am on Friday 29th July 2011 until 8am on Monday 1st August 2011.
> >
> > -----Original Message-----
> > From: BEP Marine [mailto:jjavier@...]
> > Sent: Saturday, 23 July 2011 8:55 a.m.
> > To: AMGLN.BEP-Enquiries
> > Subject: Contact Us form submitted from website - BEP Marine Limited - The Marine Electrical and Electronic Specialists - BEP Marine
> >
> > Below is the result of your Contact Us form
> > ----------------------------------------------------------
> > NAME: Tom Regan
> >
> > MESSAGE: I see your battery switches are rated at 48V. Is this a nominal value? My electric launch has a nominal 48V battery bank that charges at 55-56V.
> >
> > Thanks!
> >
> >
> > --- In electricboats@yahoogroups.com, James Lambden <james@> wrote:
> > >
> > > Hi Mark,
> > >
> > > The Blue Seas 48 volt switch is rated at 48 volts maximum not 48 volts nominal - which includes charging voltages up to 58 volts.
> > >
> > > We use the BEP switches that are rated at 48 volts nominal.
> > >
> > > I have had one string of four 4D batteries in parallel with one string of four 8D batteries on Kapowai for 5 years without any issues.
> > >
> > > The advantages of operating as one big parallel bank are there is less effect from Peukert's exponent, so the batteries actually act like they are more than twice as large, because each 48 volt battery sees only half the current under operation.
> > >
> > > The disadvantage is that one bad cell in one battery will bring down the voltage in the other string of batteries - so its important to monitor the individual battery voltages.
> > >
> > > I keep all 8 of my batteries together all of the time to avoid the issue of combining a full battery with a depleted one.
> > >
> > > James
> > >
> > >
> > > http://www.propulsionmarine.com
> > > Propulsion Marine Products by
> > >
> > > Above the Waterline, Ltd.
> > >
> > >
> > >
> > > On Jul 22, 2011, at 8:50 AM, acsarfkram wrote:
> > >
> > > > Hi Mike,
> > > >
> > > > I thought about using a 1-2-both switch but was not comfortable with the close proximity of the terminals on the switch and the 32 volt max voltage rating (Blue Sea). The single on/off Blue Sea switch that I used is rated at 48 volts. I spoke with someone at Blue Sea and they said that there was enough margin in the rating for my use.
> > > >
> > > > Thanks,
> > > >
> > > > Mark
> > > > Santa Cruz
> > > >
> > > > --- In electricboats@yahoogroups.com, "Capt. Mike" <biankablog@> wrote:
> > > > >
> > > > > Many boats have a 1, 2, or both battery
> > > > > switch for there 12 volt systems. On mine switch 1 was for the starter battery and two was for the house 12 volts (two group 27 gel batteries in parallel ). When I converted to electric I was able eliminate the starter battery and now have each house battery on it's own switch but, I operate in the Both position BTW. It should work the same with two 48 volt banks. Just make sure your wiring and switch can handle the increased current. Also as someone else mentioned if the batteries are not equally charged the higher charged one will drain into the weaker until they are equal.
> > > > >
> > > > > Capt. Mike
> > > > > Sent from on board BIANKA
> > > > > http://biankablog.blogspot.com
> > > > >
> > > > > -----Original Message-----
> > > > > From: Dennis Wolfe <dwolfe@>
> > > > > Sender: electricboats@yahoogroups.com
> > > > > Date: Fri, 22 Jul 2011 08:48:15
> > > > > To: <electricboats@yahoogroups.com>
> > > > > Reply-to: electricboats@: Re: [Electric Boats] two banks
> > > > >
> > > > > On 7/22/2011 1:29 AM, acsarfkram wrote:
> > > > > >
> > > > > > My EP system has two separate 48 volt, 100ah battery banks with a
> > > > > > common negative. If I switched both on at the same time would I get
> > > > > > one bank at 200ah? There is a diagram here;
> > > > > > http://groups.yahoo.com/group/electricboats/photos/album/237790029/pic/72846009/view?picmode=large&mode=tn&order=ordinal&start=1&dir=asc
> > > > > > <http://groups.yahoo.com/group/electricboats/photos/album/237790029/pic/72846009/view?picmode=large&mode=tn&order=ordinal&start=1&dir=asc>
> > > > > >
> > > > > > I've always figured I would fry something if I turned both on but
> > > > > > someone mentioned that it would just act as one 48 volt bank with both
> > > > > > switches on.
> > > > > >
> > > > > > Thanks,
> > > > > >
> > > > > > Mark
> > > > > > Santa Cruz
> > > > > >
> > > > > >
> > > > > yes
> > > > >
> > > >
> > > >
> > >
> >
> >
>
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