May-27-2010 02:06 AM
Aug-17-2010 08:03 AM
canadiankid wrote:curt12914 wrote:
I just don't think it would be a good marketing tool for CPE to publish the results of any testing they may have done...
If they are close to the other two at half the price then why not? Look how the car companies go after each other and compete.
Aug-17-2010 03:23 AM
professor95 wrote:pritch272 wrote:
I specifically asked about the quality of the sine wave, CPR's reply:
I am assuming you mean CPE and not CPR?
Aug-16-2010 07:45 PM
curt12914 wrote:
I just don't think it would be a good marketing tool for CPE to publish the results of any testing they may have done...
Aug-16-2010 07:36 PM
canadiankid wrote:pritch272 wrote:
"Our inverter does not have a stepped voltage or “modified” sine wave. Our inverter produces a pure sine wave with total harmonic distortion levels less than 3%. This is comparable to the Honda and Yamaha units."
Like I said earlier a test of the top inverters vs the Champion would be nice. If Champion really wanted to show off their 2000 inverter they should do the test and show the results.
Aug-16-2010 06:50 PM
pritch272 wrote:
"Our inverter does not have a stepped voltage or “modified” sine wave. Our inverter produces a pure sine wave with total harmonic distortion levels less than 3%. This is comparable to the Honda and Yamaha units."
Aug-16-2010 05:47 PM
Aug-16-2010 05:41 PM
pritch272 wrote:
I specifically asked about the quality of the sine wave, CPR's reply:
Aug-16-2010 01:32 PM
jas67 wrote:
It would be interesting to see the output of these (and the Hondas and Yamahas) on a scope?
If you look at the power inverter market, there huge difference in price and quality of power produced.
Any conventional generator is going to put out a sine wave, but inverters are another store. All cheap inverters are square wave (not to common any more) or modified-sine (most cheap ones). Pure sign inverters usually cost 2-5X the price of modified sign unit.
I would be willing to bet that the are probably some differences in power quality.
I had some modified sign inverters for power backup at my house, but I sold them because they were hard on motors. Fans sounded bad running on them (loud 60hz hum), and the motors in general ran a lot warmer on them. I didn't want to have to replace my well pump (again), or cause the premature death of a fridge or freezer.
If the CPE inverter is modified-sine output, then it might shorten the life of AC compressors used with them.
Just a thought...
Aug-16-2010 01:12 PM
professor95 wrote:
Why are we going to have increased fuel consumption? Is it "stuff" that supposedly reduces emissions - or what? All of this is simply CRAZY. I have never understood why some EPA and CARB rulings were ever implemented. For example, ethanol. Less energy per gallon, requires more fuel for equal power. So, more overall emissions per mile. Then again the ratio of energy used to produce ethanol to energy delivered by finished product.
Aug-16-2010 11:25 AM
Aug-16-2010 10:47 AM
Aug-16-2010 09:15 AM
MrWizard wrote:
the honda series is lucky, the engine is not required to meet the new air quality restrictions to reduce emissions,
watch for all mfg new lines using new designs to have increased fuel consumption,
Aug-16-2010 08:28 AM
Aug-16-2010 08:22 AM
jas67 wrote:
If the CPE inverter is modified-sine output, then it might shorten the life of AC compressors used with them.
Just a thought...
Aug-16-2010 08:22 AM