Auto Transformer - Raytech mini-ATOS Instruction Manual

8.2 Auto Transformer

To define a new auto transformer test object, just tap the auto transformer on the home page from
the new blank test object part. Defining an auto transformer is like defining a power transformer
which is described in chapter 8.1. However, the possible winding configurations are according to
Table 9.
Phases
Star with accessible neutral
3-Phases
1-Phase
90297-0.24 Instruction Manual mini-ATOS
Table 9: Winding types and symbols for auto transformer
Type
Star
Single-phase
Preliminary
Letter
Symbol
(Primary)
YN
Y
S
Letter
Symbol
(Secondary)
Ya
Ya
Sa
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