Examples On How To Connect A Three Phase-To-Ground Connected Vt To The Ied - Hitachi Relion 670 Series Applications Manual

1MRK511407-UUS Rev. N
Where:
a)
b)
c)
d)
It shall be noted that depending on national standard and utility practices the rated secondary voltage of
a VT has typically one of the following values:
• 100 V
• 110 V
• 115 V
• 120 V
• 230 V
The IED fully supports all of these values and most of them will be shown in the following examples.
4.2.4.3 Examples on how to connect a three phase-to-ground connected VT to the
IED
Figure 19
gives an overview of required actions by the user in order to make this measurement available to the
built-in protection and control functions within the IED.
Phasor measurement unit RES670
Application manual
is the symbol and terminal marking used in this document. Terminals marked with a square indicate the primary
and secondary winding terminals with the same (positive) polarity
is the equivalent symbol and terminal marking used by IEC (ANSI) standard for phase-to-ground connected VTs
is the equivalent symbol and terminal marking used by IEC (ANSI) standard for open delta connected VTs
is the equivalent symbol and terminal marking used by IEC (ANSI) standard for phase-to-phase connected VTs
gives an example on how to connect the three phase-to-ground connected VT to the IED. It
For correct terminal designations, see the connection diagrams valid for the delivered IED.
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Section 4
Analog inputs
SEMOD55055-87 v9
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