Omicron CP TD1 Reference Manual

73
Power Transformers
A three-winding transformer is much more complicated so more tests are
necessary to measure all gaps. In Figure 6-2, a complete 3-winding power
transformer is shown. The tertiary winding is not accessible in this case. When
the load is unbalanced, it is necessary for flux compensation in the three limbs
of the core.
Figure 6-2 Three-winding transformer with winding to winding and winding
to ground capacitors
N (L) B (L)A (L) C (L)
A (H) B (H) C (H) N (H)
Bushing (A) Bushing (C)Bushing (B)
C H(A) C H(C)C H(B)
C H-L (A)
C H-L(C)C H-L (B)
C H-T
(A)
C H-T
(B)
C H-T
(C)
C L-T(A)C L-T(A)
C L-T
(B)
C L-T
(C)
C L(C)
C L(B)
C L(A)
C T(C)
C T(B)
C L(A)
A B C
H
L
T

Omicron CP TD1 Specifications

General

Brand	Omicron
Model	CP TD1
Category	Measuring Instruments
Language	English