Set Idmt Characteristic Curve (For Coc4) - Mitsubishi Electric MELPRO S Series Operation Manual

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).
Abbreviated
LED Indication
0
1
2
3
4
DT(INST)
5
6
7
8
9
10
11
12
13
14
15
 
k M
  
 
t c


 
( ) I 1 10
M
t  
2
·······························································································································
10

B
   

t M A


I C
(1
Table 4-2 LED indication for IDMT characteristic curve (COC4)
Name
NI01
VI01
EI01
LI01
DT01
NI11
EI11
EI12
NI21
VI21
LI21
MI31
In equation
NI31
In equation
VI31
In equation
EI31
In equation
················································································································

D E


························································································
 
2 3

C ) (1 C )
Details
IEC Normal Inverse
, k=0.14, =0.02, c=0.
In equation
(4-1)
IEC Very Inverse
, k=13.5, =1, c=0.
In equation
(4-1)
IEC Extremely Inverse
In equation
(4-1)
Long Inverse
In equation
(4-1)
Definite Time
Refer to equation
Instantaneous operation
Normal Inverse (IEEE Moderately Inverse)
, k=0.0515, =0.02, c=0.114.
In equation
(4-1)
Extremely Inverse (IEEE Very Inverse)
, k=19.61, =2, c=0.491.
In equation
(4-1)
Extremely Inverse (IEEE Extremely Inverse)
, k=28.2, =2, c=0.1217.
In equation
(4-1)
Normal Inverse
, k=2.4, =0.4, c=1.2.
In equation
(4-1)
Very Inverse
, k=16, =1, c=0.4.
In equation
(4-1)
Long Inverse
In equation
(4-1)
Moderately Inverse
, A=0.1735, B=0.6791, C=0.8, D=−0.08, E=0.1271.
(4-3)
Normal Inverse
, A=0.0274, B=2.2614, C=0.3, D=−4.1899,
(4-3)
E=9.1272.
Very Inverse
, A=0.0615, B=0.7989, C=0.34, D=−0.284,
(4-3)
E=4.0505.
Extremely Inverse
, A=0.0399, B=0.2294, C=0.5, D=3.0094,
(4-3)
E=0.7222.
32 / 47
, k=80, =2, c=0.
, k=54, =1, c=0.
(4-2)
, k=60, =1, c=0.
(4-1)
(4-2)
(4-3)
JEP0-IL9537