NHP TemBreak PRO, User Manual

Page: 86 / 105

Annex B - Time Current Curves
86
TemBreak PRO
B_BE-UM-001-EN
– V1.1.0
B1600_BE – I
n
1600 A
LTD pick up current I
r
640 – 800 – 1000 – 1120 – 1200 – 1280 – 1360 – 1440 – 1520 – 1600 A (10 steps)
Standard curves 1 - 7
A dditional 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 5 10 29 46 1 -
@ 2 x I
r
@ 6 x I
r
1.5 x I
r
@ 3 x I
r
-
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
1.6 x I
r
- -
t
sd
(s) 0.1 0.1 0.1 0.1 - 0.2 0.2 0.05 - -
INST
I
i
14 x I
r
(Maximum of 12 x I
n
)
10 x I
r
14 x I
r
(Maximum of 12 x I
n
)
2.5 x I
r
10 x I
r
12 x I
r
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
B1600_BE