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Westinghouse IRV Instructions Manual page 71

Directional overcurrent relay for phase protection

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T Y P E S I RP, I R C AND I R D R E L AYS
R
A
-
., o.
;:: 0 . 6
Fig. J 6. Typical Time C urve of the T /me-Overcurrent Unit o f the Extremely Inverse ( J J ) R elays.
3
2
100
90
80
70
60
�0
30
20
1 0
9
8
7
6
3
2
9
1 . 0
0. 8
0 . 7
o . �
o . �
0.3
0.2
0. 1
0.09
0.08
0.07
0.06
O.Ofl
0 . 011
0.03
0 . 02
II
0 . 0 1
2
3
MII L TI I'LES Of T"' VAlli£ C:li&WIT
30
6 7 8 9 10
20
!i I
7 8 9 1 0
110
288 8655
T Y P I CAL T I �E C U R V E S
T Y P E C0- 1 1
O V E R CU R R ENT R E L AY
150-00 C Y C L £5
T IME D I AL
SETT I M ii
1 1
10
9
I
7
!i
2
1/2
1 9

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