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1. 02:17 AM - Re: Standby batteries vs. alternators (Tcwtech)
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| Subject: | Re: Standby batteries vs. alternators |
The IBBS system provides brownout protection during engine starting, which w
ith all efis systems today is highly desirable. Additionally, the ibbs s
ystem provides a redundant path of power to the connected load. The major e
fis systems these days all provide dual inputs for power. One is provided
via the main ships power source, the other from a second source, such as ou
r ibbs unit. In the event of any failure of the primary source, the ibbs w
ill take over and continue to power the efis. The ibbs system also includ
es a low voltage warning indicator function that may be used to annunciate a
lv condition of the main bus. Additionally , the IBBS system includes ov
er voltage protection devices to help protect the connected equipment from h
igh voltage transients.
Many of our customers tell us they enjoy the benefit of being able to get in
their plane and just turn on the ibbs system only to do flight planing and p
re-flight inspection without yet having to turn on the ships main battery.
Then, when finally ready to go, they engage the main contractor and fire u
p the engine.
Lastly, the Ibbs family includes experimental models and certified models.
All of which have enjoyed the rigor of testing to DO-160 and DO-311
and DO-347.
One of the great advantage of experimental aircraft is that you get to decid
e for yourself how to architect your electrical system. You can roll your o
wn in every way or purchase pre engineered solutions. There=99s no w
rong answer.
Bob Newman
TCW Technologies, LLC
610-928-3420
> On Aug 30, 2018, at 20:36, Robert L. Nuckolls, III <nuckolls.bob@aeroelect
ric.com> wrote:
>
> At 01:55 PM 8/30/2018, you wrote:
>> Bob
>>
>> The man behind the IBBS and all other TcwTech products is an RV-10 builde
r, so perhaps he will chime in.
>>
>> Carlos
>
> Understand. I've studied the patents and
> product brochures. Aside from brown-out
> protection, I'm still not seeing a cost/
> benefit ratio in favor of 'standby' batteries
> of this or any flavor.
>
> They have a periodic maintenance burden that
> lasts the lifetime of the airplane and
> costs money to replace/refurbish when cells
> reach end of life. Their energy content
> is limited.
>
> Z-13/8 offers a standby power source that
> has no endurance limit. Low parts count.
> No periodic maintenance. Unlike batteries
> with a service life, the PM alternator should
> run lifetime of the airplane. Weighs
> less than a battery capable of supporting
> 8A of endurance load for three hours.
>
>
>
> Bob . . .
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