VAMP 265, Инструкции по эксплуатации и настройке

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Technical description 2 Protection functions 2.13 Inverse time operation
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Example for Delay type RI :
k
= 0.50
I = 4 pu
I
pickup
= 2 pu
3 . 2
2
4
236 . 0
339 . 0
5 . 0









RI
t
The operation time in this example will be 2.3 seconds. The
same result can be read from Figure 2.13.1-15.
Example for Delay type RXIDG:
k
= 0.50
I = 4 pu
I
pickup
= 2 pu
9 . 3
2 5 . 0
4
ln 35 . 1 8 . 5


 
RXIDG
t
The operation time in this example will be 3.9 seconds. The
same result can be read from Figure 2.13.1-16.
Figure 2.13.1-15 Inverse delay of
type RI.
Figure 2.13.1-16 Inverse delay of
type RXIDG.