generator/welder issue.
miller generator/welder. at 1800 rpm, the generator portion should output 60 hz, 120v. . its 4 pole. output is 65v at 40 hz.. will output 60hz and 120v at about 3400 rpm. . the welder portion is a sep...
Forum Discussion
mhooker32 wrote:
He later emailed me a spec sheet of rotor readings, etc., and confirmed in the email it was a 2 pole rotor.
So are there 2 pair (total 4) slip rings/brushes ?
Some, not all, standard non-inverter generator have automatic voltage regulator that adjust rotor voltage to get the correct output voltage. THIS DOES NOT affect frequency ! Frequency is strictly controlled by the engine speed.
So if you are tweaking a non-inverter generator, set your governed engine speed so that you get about 61 Hz unloaded and greater than 58 Hz under near full load. The regulator has an adjustment screw for output voltage. You have to compromise between unloaded and loaded. You are shooting for 120VAC +/-10%.
In general, stay away from brushless generators especially if you are planning on running electronics. They have very high total harmonic distortion.
