Input scaling: 3-Phase wye (solidly grounded or impedance grounded):
Ungrounded or Petersen coil:
Input scaling: 1-Phase to Phase (independent of network grounding):
, only one voltage measured
Input scaling: 1-Phase to Ground (independent of network grounding):
, only one voltage measured
Voltage transformer connections for U< measurement
ANSI 18000583=ANSI 18000583=1=en-us=Original.vsdx
ANSI18000583 V1 EN-US
Figure 15: 3-phase VT connections
1MRK 511 452-UUS Rev. A
Section 6
Settings
Distributed busbar protection REB500
33
Engineering manual
© 2020 Hitachi Power Grids. All rights reserved