TYPE COQ RELAY
r./)
0
z
0
t)
w
CJ)
z
-
w
�
-
t-
100
90
BO
70
60
50
40
30
25
20
15
10
9
8
7
6
5
RELAY
4
CHARACTERISTICS
TIME DIAL
3
II
'2.5
'2
1.5
GENERATORS
CHARACTERISTIC
2T
=
'30
'2 -
T- 30
1.s .6 .7 .8 .9 1.0
1.5
2 2.5 3
4
5 6 7 8 9 10
NEGATIVE
SEQUENCE
CURRENT IN PER UNIT
(
1.0 PER UNIT
=
TAP VALUE CURRENT
)
Fiq. 2-Comparison
0£
Relay Characteristic With Generator Characteristic,
27-D-554:)
3
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. ElectricalPartManuals
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