Siemens SIPROTEC 7UT633*-* N series - Page 407

3.3 Commissioning
407
7UT613/63x Manual
C53000-G1176-C160-2
Figure 3-34 Zero sequence current measurement on a delta winding with neutral earthing
reactor within the protected zone
Figure 3-35 Zero sequence current measurement on an earthed series reactor (reactor,
generator, motor)
Figure 3-36 Zero sequence current measurement on an earthed single-phase transformer