CAT DVR and Woodward Easygen
CAT DVR and Woodward Easygen
(OP)
I want to voltage bias a CAT DVR ( P/N:155-3835) with an Easygen 3000 series controller, does anybody know what voltage signal to use on the Easygen and where to land the output to the DVR? Will I need to install resistor/s in the circuit, if so what size? When in base load mode will I need to modify the signal to the DVR or will the Easygen still drive the DVR? Any issues with cross current compensation with this setup?
Thx in advance,
JCA
Thx in advance,
JCA






RE: CAT DVR and Woodward Easygen
You need to make sure you disable cross current when using the easygen bias to control PF/VAR's or you will get poor operation. I assume you have cross current setup to parallel multiple units when NOT connected to the grid. Not enough info on your system to provide an exact answer, but should work ok.
Regards, Mike L
RE: CAT DVR and Woodward Easygen
Thx Mike...did you work for Cummins in CO?
RE: CAT DVR and Woodward Easygen
I know the DSLC interface worked on early version EasyGens, I did it on a four unit site about 5 years ago, but since then all the voltage regulators on the units got upgraded to CAT CDVR's. Most of the time I used EasyGens since the gensets had VR6 regulators or CDVR's.
Just a reminder, the DVR is pretty touchy about over-driving the adjustment input, we killed quite a few of them over the years with DSLC's and Basler SCP250's they didn't get setup exactly right. Since you're adding an EasyGen to a unit with a DVR I'm assuming this is some kind of retrofit?
No, never directly worked for Cummins Rocky Mountain, have done some work for Cummins, mostly on switchgear or interface jobs but mostly on the West coast.
Hope that helps, Mike L.