63
Capacitance and Dissipation Factor Measurement
The last measurement is C H. Figure 5-26 shows this connection diagram. The
measuring mode is GSTg-A+B. C HL and C HT are not measured, because they
are connected to GUARD.
The build-in relay matrix enables the described four different measurements
without any rewiring. This principle can be used not only for transformers, but
also for any system with partial capacitors inside.
Figure 5-26 Measurement of C H in GST-gA+B mode, C HL and C HT are
guarded
5.4 References
IN A
IN B
C
HL
C
HT
C
H
GSTg-A+B
C = C
H
[2.1] Schering, H.: "Brücke für Verlustmessungen", Tätigkeitsbericht
der Physikalisch-Technischen Reichsanstalt, Braunschweig
1919
[2.2] Hensler, Th., Kaufmann, R., Klapper, U., Krüger, M., Schreiner,
S.: "Portable testing device", US Patent 6608493, 2003
[2.3] Krüger, M.: "Prüfung der dielektrischen Eigenschaften von
Isolierflüssigkeiten", ÖZE, No. 5, Vienna, May 1986
[2.4] "IEEE Standard Test Code for Liquid-Immersed Distribution,
Power, and Regulating Transformers", IEEE Std C57.12.90-
1999