Setting Parameters - ABB RET670 Applications Manual

1MRK504116-UUS C
3.8.4.3
Table 132: OEXPVPH (24) Group settings (basic)
Name Values (Range)
Operation Disabled
Enabled
IBase 1 - 99999
VBase 0.05 - 2000.00
Pickup1 100.0 - 180.0
Pickup2 100.0 - 200.0
XLeakage 0.000 - 200.000
t_TripPulse 0.000 - 60.000
t_MinTripDelay 0.000 - 60.000
Table continues on next page
Application manual
V/Hz
%
150
140
130
120
110
100
0.05 0.1 0.2 0.5
t6 t5 t4
IEC01000377 V1 EN
Figure 218: Example on overexcitation capability curve and V/Hz protection
settings for power transformer

Setting parameters

Unit Step
- -
A 1
kV 0.05
%VB/f 0.1
%VB/f 0.1
ohm 0.001
s 0.001
s 0.001
transformer capability curve
relay operate characteristic
1 2 5 10
t3 t2
Default Description
Disabled Disable/Enable Operation
3000 Base current (rated phase current) in A
400.00 Base voltage (main voltage) in kV
110.0 Operate level of V/Hz at no load and rated
freq in % of (Vbase/frated)
140.0 High level of V/Hz above which tMin is used,
in % of (Vbase/fn)
0.000 Winding leakage reactance in primary ohms
0.100 Length of the pulse for trip signal (in sec)
7.000 Minimum trip delay for V/Hz inverse curve, in
sec
Section 3
IED application
Continous
20 50 100 200
(minutes)
t1
en01000377.vsd
Time
535