NHP TemBreak PRO - B400_BE - In 400 A

Annex B - Time Current Curves
71
TemBreak PRO B_BE-UM-001-EN  V1.1.0
B400_BE – I
n
400A
LTD pick up current I
r
160 – 200 – 252 – 320 – 360 – 380 – 400 A (7 steps)
320A
(fixed)
400A
(fixed)
Instantane
ous only
Standard curves 1 - 7
Additional special application curves
next pages
Characteristic dial
setting
1
2
3
4
5
6
7
8
9
10
LTD
t
r
(s)
11
21
21
5
10
19
29
2.5
4
-
@ 2 x I
r
@ 6 x I
r
@ 960A
@ 1200A
-
STD
I
sd
2.5 x I
r
2.5 x I
r
5 x I
r
10 x I
r
10 x I
r
10 x I
r
10 x I
r
-
-
-
t
sd
(s)
0.1
0.1
0.1
0.1
0.2
0.2
0.2
-
-
-
INST
I
i
14 x I
r
(Maximum of 13 x I
n
)
1280A
1600A
5200A
OCR options
Pre-Trip
Alarm (PTA)
I
p
0.8 x I
r
0.8 x I
r
t
p
(s)
40
40
Ground Fault
(GF)
I
g
0.2 x I
r
0.2 x I
r
t
g
(s)
0.2
0.2
Neutral Pole
Protection
(NP)
I
N
1.0 / 1.5 x I
r
1.0 / 1.5 x I
r
t
N
(s)
t
N
= t
r
t
N
= t
r
1, 2, 3, 4, 5, 6, 7