UPS INV OUT TOL
UPS INV OUT TOL
(OP)
Dear,
40 KVA Astrid UPS giving Alarm A13 "INV OUT TOL" ( inverter output voltage out of tolerance), Also UPS going to Bypass mode. What can be the possible causes? How we can fix this problem? Thanks in advance
40 KVA Astrid UPS giving Alarm A13 "INV OUT TOL" ( inverter output voltage out of tolerance), Also UPS going to Bypass mode. What can be the possible causes? How we can fix this problem? Thanks in advance
RE: UPS INV OUT TOL
RTFM here LINK
It says:
Possible causes:
1) Intervention of the inverter current limitation for excessive load (more than 200%)
2) Inverter failure
RE: UPS INV OUT TOL
Yes this Manual we have already, I just want to know how to fix it? Before anybody face the same trouble?what should we should action to solve this trouble.
RE: UPS INV OUT TOL
provided at that time the two lines are in sync. That means the controller always compares the two sources so that
the UPS can jump at any time. If the by-pass source is varying in magnitude & frequency and goes out of the programmed
tolerance, the UPS cannot ensure the jump. So the UPS goes to the By-pass mode without your intervention and continue to feed
the critical load.
What is the type of your By-pass source?
Is it gen fed or otherwise?
Is there any possibility that the voltage magnitude, phase angle & frequency of the By-pass source line varying and goes out of tolerance?
RE: UPS INV OUT TOL
Bypass and main input source is the same supply. also we disconnected the load already, this UPS is in idle condition without load, just input supply and it gone to bypass mode with the same message A13 "INV OUT TOL", is anyone face the same issue before?
RE: UPS INV OUT TOL
My advice is to contact the manufacturer since it has something to do with the internal electronics.
RE: UPS INV OUT TOL
" We are all here on earth to help others; what on earth the others are here for I don't know." -- W. H. Auden
RE: UPS INV OUT TOL
https://www.manualslib.com/manual/1101925/Astrid-U...
RE: UPS INV OUT TOL
UPS both source are same, UPS is just power ON and it goes to Bypass mode with the above message, may be something in Electronics, but how to contact manufacturer because it's old already.
RE: UPS INV OUT TOL
RE: UPS INV OUT TOL
As old as it is I would expect that one or more electrolytic or tantalum capacitors have failed.
RE: UPS INV OUT TOL
RE: UPS INV OUT TOL
RE: UPS INV OUT TOL
RE: UPS INV OUT TOL
Thanx
RE: UPS INV OUT TOL
RE: UPS INV OUT TOL
RE: UPS INV OUT TOL
A typical islanded diesel generator will vary from 63 Hz at no load to 60 Hz at full load. (Or from 51.5 Hz to 50 Hz)
I have had small inverters complain about the varying frequency on generators. (But often continued in service with just a warning, not a trip or bypass.
--------------------
Ohm's law
Not just a good idea;
It's the LAW!
RE: UPS INV OUT TOL