M
F
I
SNGLMODE
FORCMAST
RSTMAST
BIM/IOM TR8ATCC
IEC06000633-2-en.vsd
IEC06000633 V2 EN-US
Figure 74: Principle for a three-position switch Master/Follower/Single
Parallel control with the reverse reactance method
SEMOD159053-145 v4
Consider Figure 75 with two parallel transformers with equal rated data and similar
tap changers. The tap positions will diverge and finally end up in a runaway tap
situation if no measures to avoid this are taken.
1MRK 504 169-UEN A Section 11
Control
Transformer protection RET650 2.2 IEC 201
Application manual
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