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11
1
2
12
PR221DS
CLACK
t
Esempio:
Example:
In = 1000 A
I
= 1000 x (0,4+0,08+0,32)= 800A
1
t
= 12 s @4800 A (6I
1
1
ABB S.p.a.
ABB SACE Division
Via Baioni, 35
24123 Bergamo Italy
Tel. +39 035 395.111 - Telefax +39 035 395.306-433
http://www.abb.com
1
L
t1
I
I1
I3
I
)
TRIP TEST
Trip
Preset-
ready
4
3
Esempio:
Example:
2
CLACK
In=1000A
Esempio:
I
=1000 x (1,5+2)=3500A
2
t
= 0,1 s @8000 A (8In)
Example:
2
t
In=1000 A
I
=1000x (1,5+2)=3500A
3
I
=OFF
2
t
Esempio:
Example:
Ne=ON ; 50%
I
=OFF
3
L
t1
S
t2
I1
I2
I
L
I
I
I1
I3
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