Mitsubishi Electric AE-SW Series Instruction Manual page 27

[LTD curve setting "a=0.02"]
a=0.02
10000
5000
4000
Pre-alarm current : Ip
3000 Ir x 0.68~1.0(0.04step)-OVER 5%
2000
Current setting : Ir
0.5~1.0(0.05step) x In(CT rating)
1.10 x Ir ... Non pick-up
LTD pick-up
1.20 x Ir ... Pick-up
1000
500
400
300
200
100
60
50
40
30
20
10
5
4
3
2
1
STD time : Tsd Note3
0.06-0.1-0.2-0.3-0.4-0.5(s) 20%
.5
(at Isd x 1.5)
.4
.3
STD pick-up current : Isd
Ir x 1.5-2-2.5-3-4-5-6-7-8-9-10 15%
.2
.1
.05
.04
.03
INST/MCR pick-up current : Ii
.02
Ir x 2-4-6-8-10-12-16 15% WF1
Ir x 2-4-6-8-10-12
Ir x 2-4-6-8-10
.01
1 2 5 10 20 50
[LTD curve setting "a=3"]
a=3
10000
5000
4000
Pre-alarm current : Ip
3000 Ir x 0.68~1.0(0.04step)-OVER 5%
2000
Current setting : Ir
0.5~1.0(0.05step) x In(CT rating)
1.10 x Ir ... Non pick-up
LTD pick-up
1.20 x Ir ... Pick-up
1000
500
400
300
200
100
60
50
40
30
20
10
5
4
3
2
1
STD time : Tsd Note3
0.06-0.1-0.2-0.3-0.4-0.5(s) 20%
.5
(at Isd x 1.5)
.4
.3
STD pick-up current : Isd
Ir x 1.5-2-2.5-3-4-5-6-7-8-9-10 15%
.2
.1
.05
.04
.03
INST/MCR pick-up current : Ii
.02 Ir x 2-4-6-8-10-12-16 15% : WF1
Ir x 2-4-6-8-10-12
Ir x 2-4-6-8-10
.01
1 2 5 10 20 50
Note 1: LTD operating time t is calculated by the following equations.
LTD
(4/1.1155) -1
a
t = x T
LTD L
(I/1.1155Ir) -1
a
The accuracy of operating time is ±30% (1.5Ir≦load current<4Ir) or ±20% (4Ir≦load current).
LTD operating time is 0.8s(FLAT) when the operating time becomes 0.8s or less.
Note 3: When Tsd = "0.06" setting, operating time is 0.04~0.08s.
I 2 t is selectable : ON or OFF.
Pre-alarm time : Tp Note2
T /2 20% (at Ir x 4)
L
LTD time : T Note1
L
1-2-3-4-5-6-8-10-12-15-18(s) 20%
(at Ir x 4)
With MCR
2
I t ON
(ramp)
2
I t OFF
Max. breaking time
(In case of AE4000-SW~
15% WF2
6300-SW, it is 0.05s)
15% WF3
100 150 500 1000 2000 5000 10000
125 200 1600
Current (%)
Pre-alarm time : Tp Note2
T /2 20% (at Ir x 4)
L
LTD time : T Note1
L
1-2-3-4-5-6-8-10-12-15-18(s) 20%
(at Ir x 4)
With MCR
I 2 t ON
(ramp)
I 2 t OFF
Max. breaking time
(In case of AE4000-SW~
15% : WF2
6300-SW, it is 0.05s)
15% : WF3
100 150 500 1000 2000 5000 10000
125 200 1600
Current (%)
a = LTD curve setting
I = load current (A)
Ir = 0.5~1.0 x In (A)
T = 1~18 (s)
L
[LTD curve setting "a=1"]
a=1
10000
5000
4000
Pre-alarm current : Ip
3000 Ir x 0.68~1.0(0.04step)-OVER 5%
2000
Current setting : Ir
0.5~1.0(0.05step) x In(CT rating)
1.10 x Ir ... Non pick-up
LTD pick-up
1.20 x Ir ... Pick-up
1000
500
400
300
200
100
60
50
40
30
20
10
5
4
3
2
1
STD time : Tsd Note3
0.06-0.1-0.2-0.3-0.4-0.5(s) 20%
.5
(at Isd x 1.5)
.4
.3
STD pick-up current : Isd
Ir x 1.5-2-2.5-3-4-5-6-7-8-9-10 15%
.2
.1
.05
.04
.03
.02
.01
1 2 5 10 20 50
[LTD curve setting "a=4"]
a=4
10000
5000
4000
Pre-alarm current : Ip
Ir x 0.68~1.0(0.04step)-OVER 5%
3000
2000
Current setting : Ir
0.5~1.0(0.05step) x In(CT rating)
1.10 x Ir ... Non pick-up
LTD pick-up
1.20 x Ir ... Pick-up
1000
500
400
300
200
100
60
50
40
30
20
10
5
4
3
2
1
STD time : Tsd
0.06-0.1-0.2-0.3-0.4-0.5(s) 20%
.5
(at Isd x 1.5)
.4
.3 STD pick-up current : Isd
Ir x 1.5-2-2.5-3-4-5-6-7-8-9-10 15%
.2
.1
.05
.04
.03
.02
.01
1 2 5 10 20
Note 2: PAL operating time t is calculated by the following equations.
PAL
a = LTD curve setting
I
(4Ir/0.97Ip) -1 T
a
L
t = x Ir = 0.5~1.0 x In (A)
PAL
(I/0.97Ip) -1 2
a
Ip = 0.68~1.15 x Ir (A)
T
The accuracy of operating time is ±30% (1.5Ir≦load current<4Ir) or ±20% (4Ir≦load current).
PAL operating time is 0.5s(FLAT) when the operating time becomes 0.5s or less.
Pre-alarm time : Tp Note2
T /2 20% (at Ir x 4)
L
LTD time : T Note1
L
1-2-3-4-5-6-8-10-12-15-18(s) 20%
(at Ir x 4)
With MCR
I 2 t ON
(ramp)
2
I t OFF
INST/MCR pick-up current : Ii
Max. breaking time
Ir x 2-4-6-8-10-12-16 15% WF1
(In case of AE4000-SW~
Ir x 2-4-6-8-10-12 15% WF2
6300-SW, it is 0.05s)
Ir x 2-4-6-8-10 15% WF3
100 150 500 1000 2000 5000 10000
125 200 1600
Current (%)
Pre-alarm time : Tp Note2
T /2 20% (at Ir x 4)
L
LTD time : T Note1
L
1-2-3-4-5-6-8-10-12-15-18(s) 20%
(at Ir x 4)
With MCR
Note3
I 2 t ON
(ramp)
I 2 t OFF
INST/MCR pick-up current : Ii
Max. breaking time
Ir x 2-4-6-8-10-12-16 15% : WF1
(In case of AE4000-SW~
Ir x 2-4-6-8-10-12 15% : WF2
6300-SW, it is 0.05s)
Ir x 2-4-6-8-10 15% : WF3
50 100 150 500 1000 2000 5000 10000
125 200 1600
Current (%)
= load current (A)
= 1~18 (s)
L
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