Protection Relay Settings

They're whatever the general says they should be. That is unless you're on a ship. Then it depends on whatever the admiral says.

Removing the jocularity from my point, it all depends on where and how these relays are used. That is exactly why these relays can be adjusted.

Co-Pilot Roger Murdock (to Capt. Oveur): We have clearance, Clarence.

Capt. Oveur: Roger, Roger. What's our vector, Victor?

Dr. Rumack: Captain, these passengers don't have much time. How soon can we land?

Oveur: I can't tell.

Dr. Rumack: You can tell me, I'm a doctor.

Oveur: What I mean is, I don't know.

Dr. Rumack: Well can't you take a guess?

Oveur:...Not for another two hours.

Dr. Rumack: You can't take a guess for another two hours?

Oveur: No what I'm saying is we can't land for another two hours.

Sure! Undervoltage relay shall be set lower than the Overvoltage relay, Overvoltage relay shall be set higher than the Undervoltage relay; Underfrequency relay shall be set lower than the Overfrequency relay, Overfrequency relay shall be set higher than the Underfrequency relay; Reverse Power relay shall be set in the opposite direction of other relays; Differential relay shall be set differently than the other relays; Ground Fault relay shall be set to detect who's at fault; Overcurrent relay shall be set higher than the past relays.

The 4X100 meter relay will require careful baton settings.

Dear Fred,

We have old 10.2 MW generator & we have to recommission the generator. Kindly help me & suggest me the protection relays settings...

Hey don't all you guys have that service manual in your back pocket. Now what did he say the make, model and serial number was anyway.

What protection relays are you using?

Given your previous questions it would be better and safer to hire a consultant who can analyse your application and provide you with the correct settings. Any opinion (other than the most basic generalisation) we post here is unlikely to be correct due to the complete lack of information.

You can lead a horse to water, but you can't change his spots. lyn

If it's a recommission, then the settings should be the same as they were before the work leading to the recommission started. What do the original commissioning records say?

5 if(it's broken or not working) then 8 else 20

8 gosub 1000

10 if(you buggered about with it) then 100 else 20

20 rem you got away with it

30 end

100 rem you idiot

105 gosub 1000

110 if(someone saw you bugger about with it) then 200 else 120

120 rem you're in luck

130 dump it in the skip

140 end

200 rem you idiot

205 gosub 1000

210 if(you can blame someone else) then 130 else 300

300 rem you are really in deep doodoo

305 gosub 1000

310 if(you can hide it) then 320 else 130

320 no problem

330 end

1000 subroutine panic

1010 panic

1020 return

AND IF IT MOVES, SALUTE IT; IF IT DOESN'T MOVE PAINT IT.

They never speak softly in the military.

What a beautiful ballad....made me laugh and cry.....poetic logic.

Is this complete or you require any accessory or control panel or AVR panel, protections or PLC or any other help. We are specialized in this field. In 2007-08 we did similar services for a 5MW 6.6kV MAN BCC (now ABB) Steam Turbine Generator set bought by Asian Biggest Mushrooms Farm in India.

very funny you should be serious in this forum to attract epople to use this forum & if anyone is new in this field so do not make fun of him...

Friend,

Learn to relax and don't panic.

Humour is better than a box about the ears to demonstrate how vacuous your request for help was.

The recommissioning of a 10.2MW genset is not a minor undertaking. There will be documentation that specifies what the nominal operating parameters should be, aka "what you want", and what permissible deviation from this ideal, aka "what you really don't want" is acceptable for your location and most likely very specifically for the installation that is now in your face.

Big job for a newbie. Enjoy the challenge.

Sumairali, what documentation/records/specs/scope of works/surveys/audits.... do you have? What have you Googled so far? What colour is the turbo encabulator

Where are you?

True humour.

OP seems to have been dropped in the deep end.

He will must learn fast or drown.

If you have the correct manuals and operating instructions available, you should not have to ask these questions.

Do you have these manuals and instructions?

Have you read them?

Do you understand then?

Do you have anyone on staff who understands them?

Have you sought professional help?

Have you asked the manufacturer?

What have you done?

No one here can help you unless you give them some useful information, which you have not done, so far.

"Have you sought professional help?"

If I hang around this forum much longer I think I'll be needing professional help!

Enter forewarned.

The post you read here may be hazardous to your sanity.

try this: http://www.gedigitalenergy.com/Multilin/notes/artsci/index.htm

You won't go wrong if you follow the cardinal rule that the relays should not trip at normal values and must trip at when they reach dangerous levels. You are in the best position to judge hwat are dangerous levels, nobody here can help i think. For example, if the normal voltage is 415V and, if it becomes 430V the situation becomes dangerous, then the relay must trip before 430V, preferably say 420V.

Thanks alot ok i wil contact u if required...

Protection relay settings are dependent on the system design, system condition, and equipment requirements.

Suggest you contract with a competent, systems protection enigneering analyst before proceeding to identify your application needs/requirements.

Failure to do this can and will result in severe equipment damage and/or personal injury possibly death.

It would help to know the equipment manufacturer's telephone number. That would enable some calls to be made for advice (invitation declined).