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But you still did not reply if KVAR fluctuations occuring... I do not have the CAT AVR reference can you share it here so i can investigate.. Any time! James

Here it is : https://info.ametekdfs.com/select-the-right-blower-by-understanding-air-flow

Hi Mohsin, Thank you for clarifying.. When migration was performed ... Any change/work have been done on controls system these last days.. We will be glad to suppport you by adding these informations.. OEM manuals can help but you need to read the right one... Would try to check PPRO...

Hi Andy1984, Find here a link on Blower designing calculation , that can help you to guess at least what will be the behavior on this system... There should be a interconnected device at least called "flow limiter/restricter.." have a look on this point.. Regards, James

Thats right so thats why I asked original poster to check and cofirm that parameter value...

Do you mean that sw1&sw2 values are correct..

Hi How these Air blower would be trained..Are you intending to use VFD or other controls scheme... Is that drawing is complete ( i mean can we have a better overview on the equipments ) You got to make system stability study ...how about plant ..is that a national grid supplying (powering)...

Hi MnM? Thank you for these clarifications... Is that a combined cycle that you have...since you mentionned gas turbine in the first post and now you mentionnning Steam turbine.. I have seen some sites having troubles with I/O nets ...issues.... Will have a better look on Oem manual and...

I see on the last secreenshsot that GOVERNOR & AVR got same values for SW1/SW2 is that correct ...

You may also look at KVAR fluctuations if occuring ...as we not there ...and do not have overall view of the plant yet.... PID settings tuning require some tests to be performed ...so follow OEM instructions and come back here for any clarifications... I worked about 7 Years as Gas /Steam...

Hello. These kinds of operations /tuning should be fixed during commissioning phase.. Is that the case here... Did you have heard about droop voltage compensation.. What is actually grid/utility configuration.. I told you before that load scheme was not tuned well it looks like still...

Hi, Looks like this is serious case/issue to be fixed.. Questions: Is that unit is equipped with original Mark6e or is that a migration/upgrade.. Looks like these relays are for Soe. Did you check Magnetic pick up speed sensors... James

I really do not have a clue.. Is that OK for you to reply to my posts. Adding a feedback is always appreciated.. I share precious informations and link for purchasing a AVR replacement.. Thank you James

Here is the lonk for this AVR replacement...You can have a look on it and decide by yourself if it can suit to your needs.. EA04A Direct Replacement for Basler VR63-4 and VR63-4A Regulator EA04A is a self excited brushless type AVR, which is able to...

Hello Science20.. Thank you for these inputs.. And also for the feedback...! Any time! James

Basler Model VR63-4A only fits 120 Vac Generators, and Basler Model VR63-4 only fits 240 Vac Generators respectively, and both original Basler models do not have fuse protection. Is that the case... I have a link for that AVR replacement.... Just add a reply here than I can share it ...

You should provide details on grid /utility /facility description./configuration Also when this occuring ..is that during loading some consumers that are demanding KVar..do you see also KVar fluctuations /spikes similary to Voltage behaviour... What kind of load /consumers the plant got... Do...

You may have more informations on the Vol II ...

Have a read on this page from the OEM manual it gave some notes on Second stage nozzle "control philosophy...":

Hello Thx for this input...I will have a look on this manual even there is no inofrmation on the question posted here... Lets see when somebody can respond here as there is many frame 5 "two shafts" users here...