Settings For Step 1 - ABB RER670 Applications Manual

Section 8
Current protection
8.2.3.1
164
IEC09000636 V2 EN-US
Figure 50: Directional function characteristic
1. RCA = Relay characteristic angle
2. ROA = Relay operating angle
3. Reverse
4. Forward

Settings for step 1

Operation1: This is used to Off/On the operation of step 1.
StartCurr1: This is used to set operate current level for step 1 given in % of IBase.
CurveType1: Selection of time characteristic for step 1. Definite time delay and
different types of inverse time characteristics are available according to Table 19.
3
1
2
1MRK 506 375-UEN A
U
ref
2
4
I
dir
IEC09000636_2_vsd
Railway application RER670 2.2 IEC
Application manual
M12982-19 v10