JoeS
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Joined: Thu Dec 15, 2011 5:47 am
Location: Los Altos Hills, California

Re: TED5000 Questions

Sat Jun 27, 2015 2:29 pm

Aerowhatt wrote:I need to know accurately since I'm shopping generators. I know many will suggest getting a 5k genset. However generators are far more efficient very close to their continuous rated load. Most will use 75% to 80% of the fuel to run at 50% load as they will at 100% load. So you get 50% more electricity produced for only 25% more fuel burned if you can size the genset very close to your continuous load. Plus smaller gennies are lighter!
Yes, but... how close to the limit are all the other components being stressed? Unless it can be proven otherwise, I personally would derate something like this to between 50%-70% of its max rating - I simply don't trust manufacturer's specifications, especially for steady-state full-load operation. :evil:

Aerowhatt wrote:... Speaking of Gensets What do you think ... about this one on a cargo platform? 121lbs without the wheel kit and 3200 watts continuous.
http://www.electricgeneratorsdirect.com/Subaru-SGX3500-Portable-Generator/p5883.html?preferred_placement=1
Cutting it way too close for my liking. Besides, I'm assuming you want to use this as a charging backup in an emergency, so I presume you would want to draw power for other loads in addition to the i-MiEV? Notice they spec run time at 50% load.

Still thinking of moving this discussion to a genset thread.... :roll:
EVs: 2 Wht/Blu SE Prem., '13 Tesla MS85, 3 156v CorbinSparrows (2 Li-ion), 24v EcoScoot(LiFePO4)
EV Conv: 156v '86 Ram PU, 144v '65 Saab 96
Hybrids: 48v1kW bike
ICE: '88 Isuzu Trooper. Mothballed: '67 Saab (orig.owner), '76 MBZ L206D RHD RV

Aerowhatt
Posts: 374
Joined: Wed Jan 28, 2015 1:52 pm

Re: TED5000 Questions

Sat Jun 27, 2015 3:18 pm

JoeS wrote: Unless it can be proven otherwise, I personally would derate something like this to between 50%-70% of its max rating - I simply don't trust manufacturer's specifications, especially for steady-state full-load operation. :evil:

Aerowhatt wrote:... Speaking of Gensets What do you think ... about this one on a cargo platform? 121lbs without the wheel kit and 3200 watts continuous.
http://www.electricgeneratorsdirect.com/Subaru-SGX3500-Portable-Generator/p5883.html?preferred_placement=1
Cutting it way too close for my liking.

Still thinking of moving this discussion to a genset thread.... :roll:


Concerns noted and valid, But it is a Subaru Robin (manufacturer with integrity IME). That's why I wanted to be absolutely sure about the 3,100 or less watt draw of the i. I agree it's close, maybe too close, but it's 30 pounds, $300.00 more cash and less fuel efficient for the next step up. It would be a dedicated single load for sporadic mobile usage (at various destination sites) to L2 charge the car. Other home emergency loads are covered by a solar charged battery system.

Most anything off of Amazon and eBay of Chinese origin, I would agree with you, derate to at least 70%, maybe less. perhaps I'll give tech support a call next week and tell them I plan to run it 4 hours at time at 3100 watts/240volts and see if they flinch. FYI the full rated load run time per tank is 8 hours VS 10.8 hours at half load.

Looks like it will have to be moved now ;) (sorry)

Aerowhatt
2014 cool silver ES, acquired new 4/2015
2014 Labrador Black Pearl ES, acquired new 3/2016

BarryP
Posts: 84
Joined: Tue Jun 11, 2013 1:30 pm
Location: Idaho Falls

Re: TED5000 Questions

Mon Jun 29, 2015 12:01 pm

Aerowhatt wrote:...But measuring several ways (TED being one of them) I'm seeing a maximum real time consumption at the panel of 3053 watts or 3.053 Kw...

Aerowhatt


If using TED it would be nice to know if you can give us an Apprent Power reading (in VA). Then that will need to be your generator power in KW.

For example, if the charger is drawing 3.3KVA apparent power but only uses 3.053Kw real power, then that generator needs to put out 3.3KW.

-Barry
Bought iMiev June 6, 2013, Now leaving electrons in my wake @ ~1000miles/month
Original owner Prius 2002 275,000+ miles
Original owner Prius 2009 125,000+ miles

Don
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Joined: Thu May 10, 2012 3:55 pm
Location: Biloxi MS

Re: Backup Power Sources

Tue Jun 30, 2015 7:09 pm

FYI, Harbor Freight has a 125cc, 4.7 HP 2500/2200 continuous inverter/generator on sale right now for only $400 - Regularly $700. Weighs just 64 pounds . . . . the perfect back-up power source for the iMiEV'er on the go!! :mrgreen:

Don
2012 iMiEV SE Premium, White
2012 iMiEV SE, White
2017 Chevy Volt Premier
2014 Ford Transit Connect XLT SWB wagon, 14,000 miles
1979 Honda CBX six into six

Aerowhatt
Posts: 374
Joined: Wed Jan 28, 2015 1:52 pm

Re: TED5000 Questions

Tue Jun 30, 2015 9:54 pm

BarryP wrote:
Aerowhatt wrote:...But measuring several ways (TED being one of them) I'm seeing a maximum real time consumption at the panel of 3053 watts or 3.053 Kw...

Aerowhatt


If using TED it would be nice to know if you can give us an Apprent Power reading (in VA). Then that will need to be your generator power in KW.

For example, if the charger is drawing 3.3KVA apparent power but only uses 3.053Kw real power, then that generator needs to put out 3.3KW.

-Barry


According to TED in my measurements the PF for the "i" During L2 charging is 98% which yields a somewhat small difference of 61 watts, or so, between the two. Good point though! Anyone else have anything different?

Aerowhatt
2014 cool silver ES, acquired new 4/2015
2014 Labrador Black Pearl ES, acquired new 3/2016

ed5000
Posts: 130
Joined: Mon Jul 27, 2015 9:22 pm
Location: Castro Valley, CA

Re: Backup Power Sources

Mon Aug 14, 2017 1:58 pm

Charging on a Honda inverter generator:

https://endless-sphere.com/forums/viewt ... 34&t=89806
2012 ES, Cool Metalic Silver, no quick charge, no fog lights and no navi but a cold weather package for when it gets 13 below, wait - it never gets that cold here.
"Silver Shadow"

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