REFLECTOR: Battery contactor hot potato

[Alex]

Yea, kind of figured that they would be warm,, but this seemed unusually
hot- but by the replies I have been getting, it seems like it is normal -
just hate to waste any appreciable amount of power since I have an all
electric airplane, with an ECU- do have 2 batteries and 2 alternators
though, so reliability should be enough.....
-----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Scott Derrick
Sent: Monday, March 12, 2007 10:09 AM
To: Velocity Aircraft Owners and Builders list
Subject: Re: REFLECTOR: Battery contactor hot potato

battery relays use quite a bit of electricity in a very small area, so they
will get quite warm.  The coil has to pull pretty hard to insure a good
contact or the contacts could heat up  and weld or melt which would be very
bad.

Scott


Alex wrote:
> Dear fellow Velocitarians,
> I have been getting to the wiring, and to do testing ect, I had one of 
> my battery contactors energized so I could get power to my bus- was 
> not using any power for the most part- just needed to see if my 
> strobes, and other things functioned for a few seconds, but after 
> about 30 minutes of being on with no load, I went to disconnect, and 
> the solenoid was quite hot- too hot to hold for more than about 5 
> seconds- BTW- I am not accidentally using a momentary solenoid- it is 
> a continuous type- but the coil must be using a good amount of  power 
> to get that hot I am thinking- is this a normal condition or is there
something wrong with my unit?
>
> Alex
>
> _______________________________________________
> To change your email address, visit 
> http://www.tvbf.org/mailman/listinfo/reflector
>
> Visit the gallery!  www.tvbf.org/gallery user:pw = tvbf:jamaicangoose 
> Check new archives: www.tvbf.org/pipermail Check old archives: 
> http://www.tvbf.org/archives/velocity/maillist.html
>
>
>
>   

-- 

-
    The antidote for misuse of freedom of speech is more freedom of speech.

    Molly Ivans 

_______________________________________________
To change your email address, visit
http://www.tvbf.org/mailman/listinfo/reflector

Visit the gallery!  www.tvbf.org/gallery user:pw = tvbf:jamaicangoose Check
new archives: www.tvbf.org/pipermail Check old archives:
http://www.tvbf.org/archives/velocity/maillist.html