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Older machine GE frame 5 with speedtronic Mark 1. This machine is to operate on the grid but also as a black start (isochronous). On the grid is clear cut - 4% droop, load limited by exhaust temperature.
Isochronous however, I am unclear. We have performed black start testing which goes well, but only have placed minimum load on the machine. Will the unit behave like "normal" when carrying high loads? The manual states " normally operate in parallel with 4% droop. However, when operated alone zero droop may be selected." To my knowledge the operators do not physically select droop or isochronous mode. I think we are always in droop mode. The question is; does speedtronic somehow know when it should be isochronous or parallel? and does it automatically transfer between modes? Or does it just stay in droop mode which inherently works when isochronous?
Thanks!
Isochronous however, I am unclear. We have performed black start testing which goes well, but only have placed minimum load on the machine. Will the unit behave like "normal" when carrying high loads? The manual states " normally operate in parallel with 4% droop. However, when operated alone zero droop may be selected." To my knowledge the operators do not physically select droop or isochronous mode. I think we are always in droop mode. The question is; does speedtronic somehow know when it should be isochronous or parallel? and does it automatically transfer between modes? Or does it just stay in droop mode which inherently works when isochronous?
Thanks!