OLTC
OLTC
(OP)
Dear all
Is there any difference between a master/slave configuration and a master/follower configuration for OLTC's (onload tap changers) on parallel transformers, or is it the same?
If there is a difference, what is it, and why do they use it?
Many thanks
Is there any difference between a master/slave configuration and a master/follower configuration for OLTC's (onload tap changers) on parallel transformers, or is it the same?
If there is a difference, what is it, and why do they use it?
Many thanks
RCC






RE: OLTC
You think I'm kidding, but consider the following from a memo of the Los Angeles County Internal Services Department warning of offensive high-tech terminology:
"One such recent example included the manufacturer's labeling of equipment where the words 'Master/Slave' appeared to identify the primary and secondary sources. Based on the cultural diversity and sensitivity of Los Angeles County, this is not an acceptable identification label."
http://www.reason.com/hitandrun/003490.shtml#003490
RE: OLTC
RE: OLTC
www.a-eberle.de/pdf/dbsys_gb.pdf
(see table 1)
master/follower - same transformers, same tap change
master/slave - same transformer, same tap change with permanent tap offset
but, why is there a permanent tap offset on the master/slave configuration?
Thanx
RCC
RE: OLTC
RE: OLTC
RE: OLTC
RC—“Tap offset” may be to reduce circulating currents {er, var flow} between the paralleled transformers if they are not identical in electrical characteristics.
RE: OLTC
Also, "tap offset" could be used to force proportionate load sharing in differing size transformers.
RE: OLTC