
14
Relay settings
The setting values are shown by the right-most
three digits of the display. An indicator close to
the setting value symbol shows when illumi-
nated which setting value is shown on the dis-
play at the very moment. All setting parameters
except the operation time of the circuit breaker
are common to both stages.
Setting
Parameter
Setting range
Default
values
U
max
/U
n
Upper threshold voltage level above which the
0.5...1.0 x U
n
0.5 x U
n
measured bus/line voltage is considered to be
energized.
U
min
/U
n
Lower threshold voltage level below which the
0.1...0.8 x U
n
0.1 x U
n
measured bus/line voltage is considered to be
step 0.01 x U
n
de-energized.
∆
U/U
n
Max. difference allowed in bus/line voltage
0.02...0.4 x U
n
0.02 x U
n
magnitude
step 0.01 x U
n
∆ϕ
Max. phase angle difference allowed in bus/line
5...50
°
5
°
voltage
step 1
°
∆
f
Max. frequency difference allowed in bus/line
0.02...0.5 Hz
0.02 Hz
voltage
step 0.01 Hz
t
vc
Operate time (dead time) of the voltage-check
0.1...20 s
0.1 s
function
step 0.01 s
t
check
Checking time allowed for closing operation in
0.05...300 s
0.05 s
command mode operation (submenu of t
vc
)
step 0.01 s
t
pulse
Maximum length of closing signal in command
0.2...20 s
0.2 s
mode operation (submenu of t
vc
)
step 0.02
t
CB13
Operate time of circuit breaker operated by stage 1
0.05...0.25 s
0.05 s
step 0.01 s
Note!
When the display shows the indication "- - -", it
indicates that the synchro-check and voltage-check
functions of stage 1 are set out of operation by means
of the functional switchgroup SGF.
t
CB23
Operate time of circuit breaker operated by stage 2
0.05...0.25 s
0.05 s
step 0.01 s
Note!
When the display shows "- - -", it indicates that the
synchro-check and voltage-check functions of stage 2
are set out of operation by means of the functional
switchgroup SGF.
Further, the checksums of the function selector
switchgroups SGF, SGB and SGR are indicated
on the display when the indicators adjacent to
the switch group symbols on the front panel
are lit. The function of each selector switch in
the relay is separately explained in the chapter
" Function selector switches". Further, see sec-
tion "Main menus and submenus of settings and
registers". An example of calculating the check-
sum is given in the general description of the
D-type SPC relay modules.