Sabap,
The DCS side was checked OK. DCS Tx signals were being received at the Babel Box OK. Checked the babel box configuration for DCS reads and found the Port B Drop# to be 5 so I changed it to None to conform to other drop# for reads/writes. I put Babel box in run mode and now have DCS...
Illiterate,Swinney24,
I have contacted redlion controls who have in turn given me the electronic copy of the babelbox manuals. I am indeed grateful to you.
So my babelbox is now running but I am yet to have communications between Bailey Infi90 DCS and alfa laval PLC Satcon200.
Now I will...
buzzp,
The relay in question is not the 489 but the DGP.
e5fornow,
Phasing has been verified to correct already; all phase angles checked on load OK.
Folks,
The DGP relay manufacturer after looking at the trip current oscillographs indicated that CT matching could could be the problem and the...
I agree with Rodmcm and ScottyUK. The droop setting is responsible for load sharing in a grid.
If your droop setting is lower compared to other generators on the grid, then your gen will take proportionally a bigger chunck of any load change on the grid.
If it has no droop setting then it is...
The generator differential zone is just the neutral to terminal of the generator. It does not include the transformers T1 or T2 neither does it include GSU1 nor GSU2.
The oscillography current values during back-energisation of adjacent transformer is lower than full load current. There is no...
The oscillography data shows system side and return side of same polarity normally but because of the waveform distortion of the system side current, there exist an instant when polarity of system side is opposite to that of return side. It is not a CT wiring error otherwise the generator would...
The transformers GSU1 and GSU2 share the same HV busbar with transformers T1, T2,T3. It is the back-energisation of either GSU1 or GSU2 that cause generator differential of units feeding T1 or T2 to trip on generator differential.
We are not too sure whether it is new problem because those 2...
We have Babelbox Protocol Converter made by Paradigm Controls Ltd, UK. This converter interfaces Bailey DCS Infi90 system to Alfa Laval PLC sattcon200.
We were trying to upload settings from this converter using VT100 hypertext terminal when the converter stopped communicating with the PLC and...
There are 3 identical generator step-up transformers T1,T2,T3,2 step-up transformers, 2 identical generator step-up transformers(these were added later) GSU1,GSU2 and 2 identical station service transformers SST1 and SST2.
Realized that when generator is in service only
GE Digital generator...
