ABB SPAC 531 C User Manual And Technical Description page 138

Main menus and
submenus for
settings and
registers
12
The figure below shows the menus and sub-
menus of the directional neutral overcurrent
relay module.
MAIN MENU
Display off. Normal state
Residual voltage Uo
Neutral current Io
Set current Iϕ
S
Present start current,
T
E
low-set stage Iϕ>
P
B
A Present operate time t>,
C
low-set stage Iϕ>
K
W
A
R Present start current,
D
high-set stage Iϕ>>
.5
s
Present operate time t>>,
high-set stage Iϕ>>
M
A
I
N
Present checksum,
switchgroup SG1
M
E
N
U
1
Recorded maximum value of the neutral current Iϕ
S
T
E
Recorded maximum value of the residual voltage Uo
2
P
F
O
R
3
Number of starts of the residual voltage stage Uo
W
A
R
D
1 Number of starts of the neutral overcurrent stage Iϕ>
4
s
Number of starts of the neutral overcurrent stage Iϕ>>
5
6 Duration of the latest start event of the stage Iϕ>
7 Duration of the latest start event of the stage Iϕ>>
Recorded maximum value of the neutral current Io
8
Incoming control signals
0
Relay module
A
address code
The manual "General characteristics of C type
relay modules", describes how submenus and
setting modes are entered and escaped from and
SUBMENU
STEP 0.5 s RESET 1 s
=Parameter that can be set in the setting mode
STEP BACKWARD 0.5 s
Remotely set
percentage p1
Remotely set
percentage p2
Remotely set
percentage p3
Remotely set
percentage p4
Remotely set
checksum
000
0
Data transfer Bus communication
rate (Bd) monitor 0 ... 255
how setting is carried out. Further the manual
describes how the TRIP-TEST mode of the
relay module works.
STEP FORWARD 1 s
SUBMENU
Remotely set start
current Iϕ> x p1
Remotely set operate
time t> x p2
Remotely set start
current Iϕ>> x p3
Remotely set operate
time t>> x p4
Remotely set
Checksum
checksum
of SG2
TS1
SS1 SS2 TS2
IRF
Password
Checksum
of SG3