What kind of deadband measurements have people been getting for digital governor systems? I've tested the Woodward HR Gateshaft in the ~-.002Hz/+.008Hz and as bad as -.019Hz/+.023Hz. Woodward A-Type to +/-.017Hz, and Woodward Cabinet to .0088Hz/.017Hz for sensitivity on the head. (This is...
Hydro generator question, since gate timing is set for different opening and closing rates, is the governor speed response to a SYSTEM disturbance significantly favored in the underfrequency case more than the overfrequency case? I wonder if an IEEE paper has been written on this?
So the endless question in the generator control world, what do you think is the better governor, the classic Woodward style mechanical or various offerings of the new digital high pressure types?
I was pro-digital, then after some thinking I'm now semi-pro-digital, maybe because it's the easy...
I have a couple of old Brown Boveri Voltage regulators (the old switch blade, swiss watch looking squares).
Does anyone know how the ratings are specified on these AVR's?
NAMEPLATE:
NR B73817 Type AB4/1
110V 8.01ohms
30/13A 60Hz
VA 071949/1
What does the 30/13A mean? I think 13A is the...
