![]() |
Re: pic: ummm......what?
Quote:
|
Re: pic: ummm......what?
I'm going to take a wild guess that it probably won't pass inspection in St Louis as-is.
|
Re: pic: ummm......what?
Unplugging the battery when the circuit is on carries a risk of sparks, guys. I would not suggest trying that--ANYWHERE. That's why I asked.
|
Re: pic: ummm......what?
Just blame it on us. We looked at it funny in the semifinals. :rolleyes:
|
Re: pic: ummm......what?
Quote:
|
Re: pic: ummm......what?
Quote:
Instead of external shock causing damage, what about something internal/structural causing the breakage? |
Re: pic: ummm......what?
Quote:
|
Re: pic: ummm......what?
Quote:
I've seen the sparks that can fly when there's marginal contact on a battery to some other connection (charger, bolt, other battery). They may look pretty, but you don't want to see them because they mean something's wrong. |
Re: pic: ummm......what?
Quote:
|
Re: pic: ummm......what?
Quote:
|
Re: pic: ummm......what?
Quote:
Chris, the thing about using a non-conductive poke stick on the connector is that 1) you only get one place for a spark (the breaker, which in this case is already broken) as opposed to 2 (each side of the Anderson) and 2) your hands are not right there to risk getting zapped. I don't know about you guys, but I'm not sure I'd want my hands right next to a fully-live FRC battery's current and voltage if I had to unplug it, even with an Anderson connector between my hands and the wires. (By fully-live, I mean current is flowing actively, not current can flow if the connection is made.) |
Re: pic: ummm......what?
Quote:
|
Re: pic: ummm......what?
Under the circumstances, disconnecting the battery would have been the safest thing. The priority should be to depower the robot, and the very busted up breaker, ASAP.
While not good practice, breaking the connection at the Anderson while the robot is 'live' isn't particularly hazardous to operator or robot. By design, any arcing will occur while the Anderson is still enclosed. So while it may score the contacts a bit, that's the worse case scenario. As long as it's not an every day occurrence you won't notice. |
Re: pic: ummm......what?
David, IIRC, it was some form of short circuit. It's been a few years, but it was in a row of batteries that were charging. I looked around to see several people rush over to try to figure out how to disconnect the battery that was throwing sparks. Like I said, it's been a few years, so I forget the details like what exactly fused to what.
Also, I never said to touch the circuit breaker with your hand. I said to use an insulated poke stick. That way, there is zero chance that electricity goes to your hand. |
Re: pic: ummm......what?
eric, thanks for your point of view...but my professional experience and my advisors at work all agree my kids took the correct action by unplugging the battery...even the OSHA dude at work agrees...and him and i NEVER agree.
:D :D :D :D :D |
| All times are GMT -5. The time now is 03:15. |
Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright © Chief Delphi