3000W Chinese Gensets Info.

professor95 wrote:

Shutting down with a load of course causes a voltage drop. As voltage drops current will rise (remember watts = volts x amps) and the AVR does it's best to compensate by increasing voltage/current to the armature. This can cause heating in the P/N junction of the bi-polar transistors of the comparator circuit which "may" lead to failure.

Running generators of this type does involve risks. This is why CPE designed the newest synchronous generator with load delay/shedding circuitry which helps to keep this from happening. Also why they have added the Volt Guard to some models.

Is there any way to tell which models have the load delay/shedding and/or the Volt Guard?

I'm looking for a 120/240 unit in the 3500 watt range (rated) with a 120/240 switch and haven't been able to see from the manual or parts list any reference to Volt Guard.

I also recall reading that some units have a better THD rating than others. Is there some place where I can look this up?

Champion's response to the THD question was:

Our open frame synchronous generators have approximately 4% THD below 25% load. At 80% load, THD increases to about 11-13%.

I got some Volt Guard info from Champion.

Every Champion Power Equipment brush style generator produced after October of 2010 ships with our Voltguard technology. You can determine the manufacturing date of any Champion generator by the first digits of the serial number with correspond to year and month of manufacture.

Our 1200W generators are brushless.

More info from Champion with respect to load delay/shedding:

Our remote start units have this feature. It is tied to the remote signal. If you start the generator from the electric start or from the recoil, this feature is NOT activated.