ABB RED650 Applications Manual

L1
IL1
IL2 IL3
L2 L3
Protected Object
IED
CT 800/1
in Delta
DAC Connected
IL3-IL2
IL2-IL1
IL1-IL3
2
3
4
IEC11000028-3-en.vsdx
SMAI2
BLOCK
REVROT
^GRP2L1
^GRP2L2
^GRP2L3
^GRP2N
AI3P
AI1
AI2
AI3
AI4
AIN
1
IEC11000028 V3 EN-US
Figure 14: 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
• CTStarPoint=ToObject
• ConnectionType=Ph-Ph
It is important to notice the references in SMAI. As inputs at Ph-Ph are expected to
be L1L2, L2L3 respectively L3L1 we need to tilt 180º by setting ToObject.
4.2.2.7 Example how to connect single-phase CT to the IED
SEMOD55055-431 v8
Figure
15 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.
1MRK 505 393-UEN B Section 4
Analog inputs
Line differential protection RED650 2.2 IEC 53
Application manual

ABB RED650 Specifications

General

Brand	ABB
Model	RED650
Category	Protection Device
Language	English