Hello,
I am trying to find datasheet of an old Siemens vacuum contactor: 3TL 5100-1F 400A
And / or
Resistor: Siemens 470 Ohm, 110V 3 Ty S325-0E
Attached is connection diagram. Actually, I am trying to find power rating for those two resistors, I need to replace them. Voltage between terminal...
Hi all,
A generator was damaged few days ago, and I received some pictures showing few curves at the moment of the failure. I am not sure what the cause of the failure is/could be, so I wonder if someone out there might have seen similar before. There are few more curves I have but I think...
Hi,
I am on commissioning, and have troubles finding correct wiring for current measurements. I have tried many different combinations, and this attached is "the best". Active power follows currents, but reactive power is opposite, while in the AVR, I see both of them positive (meaning...
Hello,
I colleague of mine has a boring machine that is 3 phase 2 speed. The machine is changed to 1 phase, and also only 1 speed. He wants now to reverse this, and make it 3 phase and 2 speed again, so he asked me for a wiring diagram of those kinds of boring machines.
Anyone who knos where...
Hi,
I would like to discuss the following statement:
"It is better to have short circuit level at 440V that is 80-90kA, than at 690V with 50-60kA"
What would you say is correct, and why?
PS! Regarding generator on a ship.
Thanks,
Denan
Hi all,
I have a problem with a CHP plant, strange gen.CB trips.
The situation is like this:
First I have to say that the gris in the area is very bad, unstable. there are two similar plants, one (our, with the problem) has one genset, and the other (neighbour) with two gensets. If we are on...
Lately I got a question regarding capability diagram of a generator (gas engine driven).
The case is like this:
If prime mover is running with 100% load, say PF=1, does it get overloaded when PF is anything other than 1 (leg or lead)?
I don't think so, but am I wright?
Also, I appreciate any...
Hi all,
I hope to get some tips on vector jump, and ROCOF. How to find correct setting for a genset, and what is safe setting.
Situation: On a plant they get trip on vector jump, and the setting is 11deg. I have a settings file showing 6deg for vector jump, and have no idea who changed it to...
Hello people!
My first post on this forum (great!, by the way). I was searching the internet for voltage levels in MV distribution grid in different countries of the world. I could not find any site having that information. Found only one...
