ABB RER670 - Settings for Step 2; Instantaneous Residual Overcurrent Protection EFRWPIOC; Identification

HarmRestr1: This is used to block the operation of step1 from the 2
nd
harmonic
restrain function. This function should be used when there is a risk of an unwanted
trip caused by power transformer inrush currents. It can be set to Off/On.
DirMode1: This is used to set the directional mode of step 1. The possible modes
are Non-directional/
Forward/Reverse.
ActLowVolt1: This is used to define directional step behavior when the measured
voltage is below set LowVolt level. The possible modes of operation are Non-
directional/block/Memory. It is set to Memory by default.
8.2.3.2 Settings for step 2
GUID-3ADA3BA6-FC4B-4DD0-A545-CB48F1294B25 v1
Operation2: This is used to Off/On the operation of step 2.
StartCurr2: This is used to set operate phase current level for step 2 given in % of
IBase.
tDef2: Definite time delay for step 2. Note that the value set is the time between
activation of the start and the trip outputs.
HarmRestrain2: This is used to block the operation of step 2 from the 2
nd
harmonic
restrain function. This function should be used when there is a risk if power
transformer inrush currents might cause unwanted trip. It can be set Off/On.
DirMode2: This is used to set the directional mode of step 2. The possible modes
are Non-directional/Forward/Reverse.
ActLowVolt2: This is used to define directional step behavior when the measured
voltage is below set LowVolt level. The possible modes of operation are Non-
directional/block/Memory. It is set to Memory by default.
8.3 Instantaneous residual overcurrent protection
EFRWPIOC
GUID-9131D7D1-2F18-4387-8208-07CA9DEB20CC v1
8.3.1 Identification
M14887-1 v4
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Instantaneous residual overcurrent
protection
EFRWPIOC
IN>>
IEF V1 EN-US
50N
Section 8 1MRK 506 375-UEN A
Current protection
166 Railway application RER670 2.2 IEC
Application manual