A
I
A
I
B
I
C
B C
Protected Object
IED
C
T
8
0
0
/
1
i
n
D
e
l
t
a
D
C
A
C
o
n
n
e
c
t
e
d
IC-IB
IB-IA
IA-IC
2
3
4
ANSI11000028-2-en.vsd
SMAI_20
ANSI11000028 V2 EN
Figure 12: 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
prim
=800A
CT
sec
=1A
• CTWyePoint=ToObject
• ConnectionType=Ph-Ph
It is important to notice the references in SMAI. As inputs at Ph-Ph are expected to be
A-B, B-Crespectively C-A we need to tilt 180º by setting ToObject.
Example how to connect single-phase CT to the IED
Figure
13 gives an example how to connect the single-phase CT to the IED. It gives an
overview of 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.
Section 3 1MRK504116-UUS C
IED application
48
Application manual
To Next Page
Loading...
