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2.2.1.2.
ANSI CURVES
Response times for ANSI Curves are as follows:
<
<
For
1
V
1.05,
the
unit
≤
<
For
1.05
V
20.00,
tripping
=
T
M
≤
For
20.00
V,
the
tripping
T
Where:
CURVE NAME
Extremely Inverse
Very Inverse
Inverse
M =Time Dial setting (set in the relay by user).
V = I / I
> 1.05
pickup setting
2-4
PRODUCT DESCRIPTION
will
produce
a
pickup
signal
time
will
be
:
⎡
B
+
⎢
*
A
−
(
V
C
)
⎣
time
will
be
the
same
as
⎡
B
=
+
⎢
M
*
A
−
⎣
(
20
A
0.0399
0.0615
0.0274
MIF Digital Feeder Protection
,
but
not
a
trip.
D
+
+
−
−
2
(
V
C
)
(
V
for
20.00
times
the
setting
D
+
+
−
2
C
)
(
20
C
)
B
0.2294
0.7989
2.2614
⎤
E
⎥
3
⎦
C
)
:
⎤
E
⎥
−
3
⎦
(
20
C
)
C
D
0.5000
3.0094
0.3400
-0.2840
0.3000
-4.1899
E
0.7222
4.0505
9.1272
GEK-106273L
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