Re: [Amel Yacht Owners] AC Panel Green Light


James Wendell <ms42phantom54@...>
 

Alexandre, hopefully I can help shed some light on the Onan frequency vs rpm question you raised. You are correct that it will output 50hz at 1500 rpm and 60hz at 1800 rpm. Adding a tachometer would not tell you anything, even if you could. Frequency and engine speed are synonymous when properly matched on a governor-controlled generator, so monitoring the frequency ensures you are monitoring the rpm by default.

I did install a network interface on my Onan. It is an option. It allows you to see frequency, voltage, current output, oil pressure, water temp, and engine hours, but there is no "tach" output. I installed the interface to allow me to monitor the health of the engine primarily. Like my main engine, I like to see how the systems are running.
Jamie
 
s/v Phantom Amel 54 #044


On Monday, September 26, 2016 6:33 PM, "Alexandre Uster von Baar uster@... [amelyachtowners]" wrote:


 
Good afternoon Hanspeter,

I feel bad, since I am the one that originally wrote that from memory it was 1500 rpm for 50 hertz.
This was from memory of what the Onan technician told me, regarding the fact that the exhaust was below water. I thought he said it was ok for 1500 rpm but would be an issue for 1800.

Not that it matters as we will keep using our genesis in 50 hertz regardless of their rpm, but I glanced at the owner manual and was not able to find any reference to that…
May be I should/could have looked deeper at the Operator’s manual and service manual
http://nikimat.com/onan_mdkal_b_specs_12_volt_kubota_d1105.html
Could you please show us your source?

Thanks in advance!

Sincerely, Alexandre

--------------------------------------------
On Mon, 9/26/16, 'hanspeter.baettig@...' hanspeter.baettig@... [amelyachtowners] wrote:

Subject: Re: [Amel Yacht Owners] AC Panel Green Light
To: amelyachtowners@...
Date: Monday, September 26, 2016, 5:00 PM


 









hi Bill Kenneyyour are wrong. 50 hz
at 1800 rpm60 hz at 1500
rpmread the
manualkind
regardsHanspeterTamango 2SM16
Von
meinem iPhone gesendet
Am
26.09.2016 um 16:42 schrieb Bill Kinney greatketch@...
[amelyachtowners] :
















 






Hello  All,
On these generators the
rotational speed controls the FREQUENCY of the power NOT the
voltage.  A 50 Hz generator should run at 1500 RPM, for 60
Hz they should run at 1800 RPM.  If your frequency is
right, your speed is right.  If you voltage is wrong,
something else needs fixing.


Bill KinneySM #160, HarmonieSolomons, MD, Chesapeake Bay,
USA“Ships and men
rot in port."http://fetchinketch.net






On Sep 26, 2016, at 06:06, svperegrinus@...
[amelyachtowners]
wrote:
Hello Alexandre,
Ours puts out 219V with no load,
217V with max load, and 218V with half load.  It's been
that way for at least 3 years, since I started looking at
this measurement.
I asked the only
Onan-recommended, Onan certified dealer, in this part of the
world why I am not getting 230V on a 230V boat, and whether
he should adjust it.
He bent over, took a pic of the
genset spec plate and showed me his phone: the genset spec
reads "220V".  He said we should leave it
alone.
Now with this thread I a am not
so sure.  
When he comes by tomorrow,
I'll ask him to check the RPMs.  Should be 1800,
uh?
Cheerio,
PeregrinusSM2K No. 350Marina d'Arechi,
Salerno

























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