M-3520 Instruction Book
6–36
67NIT Residual Directional Overcurrent, Inverse Time
VOLTAGE INPUTS:
See Below
CURRENT INPUTS:
See Below
TEST SETTINGS:
Pickup
P
Amps
(0.50 to 240.0)
1 Amp
(0.1 to 48.0)
Directional
See Below
Standard Inverse Time Curves
1
Curve
C
(1 to 4)
Time Dial
TD
(0.05 to 11.0)
IEC Inverse Time Curves
1
Curve
C
(5 to 8)
Time Dial
TD
(0.05 to 1.10)
MSA
C
MSA
Output
(0 to 359)
Polarization Type
C
(1 to 5)
Programmed Outputs
Z
Output
(1 to 8)
Function 27G, 32
Disable
Function 47 #1, #2
Disable
Functions 50, 51V, 59
Disable
Functions 67IT, 67NDT
Disable
1.
Disable functions as shown. Refer to Section 3.2, Configure Relay Data, for procedure.
2.
Confirm settings to be tested.
3.
Enable directional feature and connect inputs as listed in table below for the polarization type
selected for testing:
N
O
I
T
A
Z
I
R
A
L
O
P
E
P
Y
T
P
U
T
E
S
1
C
d
n
a
,
B
,
A
s
e
s
a
h
p
t
n
e
r
r
u
c
d
n
a
,l
e
l
l
a
r
a
p
n
i
d
e
c
a
l
p
C
d
n
a
,
B
,
A
s
e
s
a
h
P
e
g
a
t
l
o
V
.
s
e
i
r
e
s
n
i
d
e
c
a
l
p
2
s
e
i
r
e
s
n
i
d
e
c
a
l
p
C
d
n
a
,
B
,
A
s
e
s
a
h
p
t
n
e
r
r
u
c
;
e
g
t
a
l
o
v
l
a
r
t
u
e
N
.
3
t
n
e
r
r
u
c
A
e
s
a
h
p
y
l
p
p
a
d
n
a
e
c
n
e
u
q
e
s
e
v
i
t
a
g
e
n
ll
u
f
h
ti
w
s
e
g
a
tl
o
v
e
s
a
h
p
-
3
d
e
c
n
a
l
a
B
.
y
l
n
o
4
e
p
y
t
n
o
i
t
a
z
i
r
a
l
o
p
s
i
h
T
.
s
e
i
r
e
s
n
i
d
e
c
a
l
p
C
d
n
a
,
B
,
A
s
e
s
a
h
p
t
n
e
r
r
u
c
;
t
n
e
r
r
u
c
l
a
r
t
u
e
N
.
o
r
e
z
t
a
t
e
s
s
i
h
c
i
h
w
,
e
r
u
t
a
e
f
)
A
S
M
(
e
l
g
n
A
y
t
i
v
i
t
i
s
n
e
S
m
u
m
i
x
a
M
e
s
u
t
o
n
s
e
o
d
5
p
i
r
t
e
h
t
n
i
t
n
e
r
r
u
c
l
a
r
t
u
e
n
r
o
,l
e
l
l
a
r
a
p
n
i
C
d
n
a
,
B
,
A
s
e
s
a
h
p
e
g
a
t
l
o
v
r
e
h
t
i
E
I
3
o
t
e
c
n
e
r
e
f
e
r
n
i
n
o
i
g
e
r
ZERO
.
)
4
r
o
1
e
p
y
t
e
e
s
(
n
o
i
t
i
d
n
o
c
p
i
r
t
e
v
i
g
l
l
i
w
4.
Refer to Appendix D,
Inverse Time Curves
, and IEC table below to calculate test times for levels
represented on the graphs. It is suggested that 4 or 5 test levels be chosen.
1
Either a Standard Curve or an IEC Curve must be selected.
C
These settings are in a separate menu labeled Neutral Dir Setup.
Summary of Contents for M-3520
Page 1: ...Instruction Book M 3520 Intertie Protection Relay ...
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Page 95: ...M 3520 Instruction Book 3 12 This Page Intentionally Left Blank ...
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