2–29
Application – 2
The reverse power function has single-phase/three-
phase options. The base volt-amperes (1 pu) for
these options are as follows:
Three-phase (line-to-line voltage input) reverse
power base volt-amperes:
r
e
w
o
P
e
s
r
e
v
e
R
e
s
a
h
P
-
e
e
r
h
T
s
T
V
y
r
a
d
n
o
c
e
s
V
0
2
1
s
T
V
y
r
a
d
n
o
c
e
s
V
3
.
9
6
A
V
0
0
8
1
=
/
0
0
8
1
=
5
A
V
9
3
0
1
=
3
n
o
it
c
n
u
F
e
g
n
a
R
t
n
i
o
p
t
e
S
t
n
e
m
e
r
c
n
I
g
n
it
t
e
S
l
a
it
i
n
I
)
2
3
(
e
s
a
h
P
-
3
,r
e
w
o
P
l
a
n
o
it
c
e
r
i
D
r
e
w
o
P
d
r
a
w
r
o
F
e
d
u
ti
n
g
a
M
w
o
l
F
u
p
0
.
3
o
t
2
0
.
0
u
p
1
0
.
0
u
p
0
.
3
2
#
,
1
#
y
al
e
D
e
m
i
T
s
el
c
y
c
0
6
1
8
o
t
1
el
c
y
c
0
.
1
s
el
c
y
c
0
3
r
e
w
o
P
e
s
r
e
v
e
R
e
d
u
ti
n
g
a
M
w
o
l
F
u
p
0
.
3
o
t
2
0
.
0
u
p
1
0
.
0
u
p
0
.
3
*
y
al
e
D
e
m
i
T
s
el
c
y
c
0
6
1
8
o
t
1
el
c
y
c
0
.
1
s
el
c
y
c
0
3
5
7
.
0
=
e
m
it
e
s
n
o
p
s
e
r
;
y
a
l
e
d
l
a
n
o
it
n
e
t
n
i
o
n
s
a
h
g
n
it
t
e
s
d
e
e
p
s
-
h
g
i
h
,y
a
l
e
D
e
m
i
T
*
e
l
c
y
c
K
.
e
l
c
y
c
5
.
0
Table 2-11
Directional Power (32) Setpoint Ranges
67
Phase Directional Overcurrent Option
For intertie protection applications, the phase directional overcurrent relay allows greater selectivity for
utility system faults, since the directional element can be set to look toward the utility system. As a
generator protection relay, the 67 function, looking into the generator, can provide protection for accidental
energizing of the generator on turning gear. When line-side CT inputs are used, this function can also
provide high-speed protection for generator winding faults. However, with line-side CTs, the protection
Single-phase (line-to-neutral voltage input) reverse
power base volt-amperes:
r
e
w
o
P
e
s
r
e
v
e
R
e
s
a
h
P
-
e
l
g
n
i
S
s
T
V
y
r
a
d
n
o
c
e
s
V
0
2
1
s
T
V
y
r
a
d
n
o
c
e
s
V
3
.
9
6
A
V
0
0
6
=
/
0
0
6
=
5
A
V
6
4
3
=
3
Summary of Contents for M-0420
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