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