ABB Relion 670 Series Applications Manual page 68

Section 4
Analog inputs
A B
Protected Object
ANSI11000028 V3 EN-US
Figure 16: Delta DAC connected three-phase CT set
In this case, everything is done in a similar way as in the above described example, except that for
all used current inputs on the TRM the following setting parameters shall be entered:
CT
=800A
prim
CT =1A
sec
CTWyePoint =ToObject
•
ConnectionType = Ph-Ph
•
It is important to notice the references in SMAI. As inputs at
respectively C-A we need to tilt 180º by setting
4.2.2.7 Example how to connect single-phase CT to the IED
Figure 17
the required actions by the user in order to make this measurement available to the built-in
protection and control functions within the IED as well.
62
C
I_A-I_C
I_B-I_A
I_C-I_B
gives an example how to connect the single-phase CT to the IED. It gives an overview of
For correct terminal designations, see the connection diagrams valid for the
delivered IED.
© Copyright 2017 Hitachi Power Grids. All rights reserved
IED
2
1
3
ToObject .
1MRK 511 407-UUS Rev. J
4
SMAI2
BLOCK AI3P
REVROT AI1
^GRP2_A AI2
^GRP2_B AI3
^GRP2_C AI4
^GRP2_N AIN
ANSI11000028-3-en.vsdx
Ph-Ph are expected to be A-B, B-C
Phasor measurement unit RES670
Application manual
SEMOD55055-431 v8