TY PES IRP, IRC AND IRD R ELAYS
en
0
z
0
(..)
UJ
6
5
"' a
2
1
0
1
TYP I CAL T I ME CURVES
TYPE C0-9
O V E R C U R R E N T R E LAY
50- 60 CYCL E S
T I M E D I AL S ETT I NG
1 1
10
9
8
7
2 ,
1
1/2
2
3
�
5
6
7 8 9
10
12
11:1 16 18 20
MULT I P L ES
OF
TAP V A LU E CU RREN T
Curve
418249
Fig.
15.
Typical Time Curve
of
the T ime·O vercurrent Unit
of
the V ery Inverse (9} Relays.
17
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