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Re: (ET) Electric Chainsaw and rotary inverter

*nod* It is nice; I think Bill put a new set of brushes on it.
I'll just be careful with it until such time as I can find a new clixon. Just a note on UPSes: I have dragged an APC SmartUPS 2200 out into the wilderness and tried to run the chainsaw on it; it shuts down with an overload. The only UPS I have ever found to work with the chainsaw is my (massive) APC Matrix 3000 unit in a trailer. I think this is because it has a 100+lb transformer in the bottom. Electric motors are serious inductive loads, and they tend to trip UPS units. 

Chris


Tim Humphrey wrote:

I haven't seen the rotary inverter in person, but I suspect it was 
overbuilt
wit the same quality level as the other GE ET "stuff". I highly expect you
would melt your saws motor before the inverter even broke a sweat.

But beware, I have "somewhat" tried to melt my saws motor without success.

Remember that old saying about DC motors producing max torque at stall....
Well..... I'm not exactly weak and I haven't been able to stall my AC
chainsaws yet. The harder I push the more they cut. The 100 ft 14ga. stench
cord does get warm, the 12ga cord does not. The wires might, but the heat
doesn't make it to the outside of th insulation.
-- 
Stay Charged!
Hump

GE I-5
Blossvale, NY

-----Original Message-----
From: elec-trak-bounces cosmos phy tufts edu
[mailto:elec-trak-bounces cosmos phy tufts edu] On Behalf Of Christopher
Zach
Sent: Tuesday, October 24, 2006 12:21 PM
Cc: Elec-Trak
Subject: Re: (ET) Electric Chainsaw and rotary inverter

Ok, a bit more on-topic question: I have a rotary inverter for my

Elec-trak,

and want to use a chainsaw with it. Back when the breaker was working; it
would pop pretty quickly with my 16 inch Sears saw, popped more slowly

with

the Sears 14 inch one.

Yesterday I went out to cut up some wood, and the breaker on the rotary

was

not resetting at all (this is straight out of the shed). I bypassed it,

used

the chainsaw, and aside from it slowing down under load appeared fine.

What kind of breaker should I put on this thing and do I need to have one
really? The 36 volt side is protected by the Elec-trak's 45amp accessory
breaker; if it overloaded the Trac should shut it down.

Or is the rotary inverter just not up to powering a chainsaw?

Chris



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