ABB RET670 - Setting Parameters

IEC vector group ANSI designation Positive sequence no-load
voltage phasor diagram
Required delta CT connection
type on wye side of the
protected power transformer
and internal vector group
setting in the IED
Dyn11 D
AC
Y
Y
IEC06000562 V1 EN
DAC/Yy0
YNd5 YD150
Y
IEC06000563 V1 EN
DAB/Yy6
Dyn5 DY150
Y
IEC06000564 V1 EN
DAC/Yy6
3.5.1.4 Setting parameters
Table 36: T2WPDIF (87T) Group settings (basic)
Name
Values (Range) Unit Step Default Description
Operation Disabled
Enabled
- - Disabled Operation Disable / Enable
SOTFMode Disabled
Enabled
- - Enabled Operation mode for switch onto fault
tAlarmDelay 0.000 - 60.000 s 0.001 10.000 Time delay for diff currents alarm level
IDiffAlarm 0.05 - 1.00 IB 0.01 0.20 Dif. cur. alarm, multiple of base curr, usually
W1 curr.
IdMin 0.05 - 0.60 IB 0.01 0.30 Section1 sensitivity, multi. of base curr,
usually W1 curr.
Table continues on next page
Section 3 1MRK504116-UUS C
IED application
120
Application manual