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4.6.4. Set IDMT Characteristic Curve (for COC4)
In the COC4-A02S1, IDMT curves can be select from 16 types. Please refer to clause 2.2.
In front LED, quantified value are indicated. The correspondence table between LED indication number and
curve characteristic are shown in Table 4-2. The equations of IDMT characteristic are shown in equation
(4-1) to (4-3).
Table 4-2 LED indication for IDMT characteristic curve (COC4)
LED Indication
Abbreviated
Name
Details
0
NI01
IEC Normal Inverse
, k=0.14,
=0.02, c=0.
1
VI01
IEC Very Inverse
, k=13.5,
=1, c=0.
2
EI01
IEC Extremely Inverse
, k=80,
=2, c=0.
3
LI01
Long Inverse
, k=54,
=1, c=0.
4
DT01
Definite Time
5
DT(INST)
Instantaneous operation
6
NI11
Normal Inverse (IEEE Moderately Inverse)
, k=0.0515,
=0.02, c=0.114.
7
EI11
Extremely Inverse (IEEE Very Inverse)
, k=19.61,
=2, c=0.491.
8
EI12
Extremely Inverse (IEEE Extremely Inverse)
, k=28.2,
=2, c=0.1217.
9
NI21
Normal Inverse
, k=2.4,
=0.4, c=1.2.
10
VI21
Very Inverse
, k=16,
=1, c=0.4.
11
LI21
Long Inverse
, k=60,
=1, c=0.
12
MI31
Moderately Inverse
, A=0.1735, B=0.6791, C=0.8, D=−0.08, E=0.1271.
13
NI31
Normal Inverse
, A=0.0274, B=2.2614, C=0.3, D=
−4.1899,
E=9.1272.
14
VI31
Very Inverse
, A=0.0615, B=0.7989, C=0.34, D=
−0.284,
E=4.0505.
15
EI31
Extremely Inverse
, A=0.0399, B=0.2294, C=0.5, D=3.0094,
E=0.7222.
10
( )
1
k
M
t
c
I
················································································································
(4-1)
2
10
M
t
·······························································································································
(4-2)
2
3
(1
)
(1
)
B
D
E
t
M
A
I
C
C
C
························································································
(4-3)
Содержание MELPRO CBV2 -A02S1
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