
E-34
17. Characteristics setting of ETR
17.1 Setting of over-current tripping characteristics
0.5-0.4-0.3-0.2-0.1-0.06 - 0.06-0.1-0.2-0.3-0.4-0.5 s
Adjustable setting range
(INST)
(MCR)
The table and the figure include both optional display. Pre-alarm current OVER setting is Iu
×
1.15.
16-12-10-8-6-4-2 - 2-4-6-8-10-12-16
×
Ir
No.
Mark
Iu
Ir
T
L
Isd
Tsd
Ii
Ip
Tp
Adjustable setting range
0.8-1.0
×
Ir (step 0.02), Pick-up current: 1.15
×
Iu
0.5-1.0 (step 0.05)
×
In (CT rating)
12-25-50-100-150 s at Iu
×
2
1.5-2-2.5-3-4-5-6-7-8-9-10
×
Ir
Iu
×
0.68-1.0 (step 0.04) -OVER
1/2 T
L
at Iu
×
2 (after 1/2 T
L
, PAL contact output turns on.)
Accuracy
1.05
×
Iu ··· Non pick-up
1.25
×
Iu ··· Pick-up
±
20%
±
15%
±
15%
±
10%
±
20%
±
20%
(Note)
Factory
default value
1.0
1.0
150
10
0.5 (I
2
t ON)
16 (INST)
OVER
̶
̶
Setting item
Uninterrupted
current
LTD time
STD pick-up current
Current setting
STD time
INST/MCR
pick-up current
Pre-alarm current
Pre-alarm time
(I
2
t OFF)
(I
2
t ON)
(at Isd
×
1.5)
(Note) (O operation)
When
Tsd
=
0.06 setting, operating time is 0.04-0.1 s. When Tsd = 0.1 setting, operating time is 0.1 s
±
50%.
(CO
operation)
When
Tsd
=
0.06, 0.1 setting, operating time is 0.04-0.15 s.
2
1
3
4
5
6
7
̶
1.15
(xlu)
1
.92
(OVER)
TEST
TRIP
ALARM
(s)
L/S LOCK
.84
.76
.68
1
.9
3
3
1.5
1.5
.15
.15
.1
.1
.8
.8
.5
.5
.3
.3
.7
.5
.3
.1
RESET
Tg
Tg
(xln)
Ig
Ig
Ip
TEST
Freq.
50Hz
60Hz
GF
GF
TYPE S1
RUN
ERR.
PAL
Ip
Iu
Isd
Tsd
I
T
LTD
STD
INST
i
I
2
t
L
OVER
100
Ir
(×In)
Iu
(×Ir)
Isd
(×Ir)
I
i(×Ir)
I
2
t
ON
I
2
t
OFF
T
L(s)
Tsd
(s)
INST
1
16
16
12
12
10
10
8
6
4
2
2
4
6
8
.9
.8
.7
.6
.5
MCR
Iu ×2
80
60
%lu
1
.96
.92
.88
.84
.8
10
8
6
4
3
2.5
2
1.5
150
100
50
25
12
.5
.5
.3
88
.1
.06
.06
.1
.3
3
5
4
7
6
2
1
(Note 1) (O operation)
When
Tsd
=
0.06 setting, operating time is 0.04-0.1 s.
When
Tsd
=
0.1 setting, operating time is 0.1 s
±
50%.
(CO
operation)
When
Tsd
=
0.06, 0.1 setting, operating time is 0.04-0.15 s.
(Note 2) I
2
t is selectable: ON or OFF.
(Note 3) When CO operation, max. breaking time is 0.135 s.
Operating time (s)
Current (%)
(s)
(min)
(h)
5000
4000
3000
2000
1000
500
400
300
200
100
60
50
40
30
20
10
5
4
3
2
1
.5
.05
.04
.03
.02
.01
.4
.3
.2
.1
1
2
10
15
30
40
1
20
8
6
4
50
40
30
20
10
5
4
3
2
1
.5
.05
.06
.04
.03
.02
.01
.4
.3
.2
.1
1
2
5
10
20
50
100
125
150
200
500
1000
1600
2000
5000
10000
STD time: Tsd (Note 1) (Note 2)
0.06-0.1-0.2-0.3-0.4-0.5 (s)
±
20%
(at Isd
×
1.5)
Ir
×
0.8-1.0 (step 0.02)
Uninterrupted current: Iu
LTD pick-up 1.05
×
Iu
…
Non pick-up
1.25
×
Iu
…
Pick-up
STD pick-up current: Isd
Ir
×
1.5-2-2.5-3-4-5-6-7-8-9-10
±
15%
Pre-alarm time: Tp
T
L
/2
±
20% (at Iu
×
2)
Pre-alarm current: Ip
Iu
×
0.68-1.0 (step 0.04) - OVER
±
10%
LTD time: T
L
12-25-50-100-150 (s)
±
20%
(at Iu
×
2)
With MCR
INST/MCR pick-up current: Ii
Ir
×
2-4-6-8-10-12-16
±
15%
Max. breaking
time (Note 3)
LTD pick-up, Ip
…
% of Uninterrupted current Iu
Iu, Isd, Ii
…………
% of Current setting Ir
Current
I
2
t ON
(ramp)
I
2
t OFF
Operating characteristic curve (for general purpose: Type S1)