Micom P143 Check Synch Feature

What did the maker of the Micom P143 device say when you asked them?

When we directed our query to Alstom people, they simple sent a modified terminal numbers and no reply was received. Although we are in followup of the matter with them, this may take some time. We need to check this relay operation and proceed further for the other activities to synchronise the machine.

At this point, I can only question the intelligence of trying to use gear you know nothing about.

Maybe it's time to get gear you know how to use or hire an instrumentation engineer who knows how to use the gear you have.

Waiting for an answer from unknown total strangers will not aid forward progress.

Good luck and good bye.

Using the old 3 lamps method, I do believe that no neutral is needed anyway.....

We used (if my memory served me correctly, 3 phases from the online Generator and 3 phases from the oncoming generator.

If we talk of colours for phases as being R Y B, then one phase will be connected to the same colour phase on the other generator via one lamp, the top one set in a triangle configuration in my time.

And the other two will be cross connected across the last two phases each via a lamp.

Normally a resistor will also be required in series with each lamp to reduce voltage to lamps. (sometimes two lamps in series are used).

Roughly something like this:-

If you understand the above fully, then you will also easily understand where a phase meter will fit in. I always preferred the lamps, but its not "modern"....

The testing, setting up and connection, need to be 100% safely carried out to prevent any possible errors.

Reverse power sensing is needed in the oncoming generator to allow a bad parallel connection to be swiftly broken....automatically.

I firmly agree with the other respondents on this question. Do not proceed without a much better communication between you and the OEM(s) involved including the manufacturer of your 30MW machine. Also, the last thing you want is allow this to somehow "motorized" the generator and damage your capital equipment.

The real reason for your question: What is stopping your from full compliance with the requirements of the P143?

I THINK U CAN TEST IT BY USING 2PH SUPPLY FROM THE BOTH SIDE WITH DIS CONNECTING THE BREAKKKER CLOSE COMMAND TERMINALS AND CHECK IS IT WORK PROPERLY OR NOT... IT'S SO SIMPLE...

thanks to all for reply.