5
Block diagram
IL1
IL2
IL3
50 ms
40 ms
60 ms
40 ms
0.12 x I>
60 ms
&
SGR3 / 1
SGR1 / 1
SGR3 / 2
SGR2 / 1
SGR2 / 2
SGR1 / 2
SGR3 / 3
SGR1 / 3
SGR3 / 4
SGR2 / 3
SGR2 / 4
SGF1 / 5
SGR1 / 4
2 x I>>
1.5 x I>
1.25 x I>
SGR3 / 5
SGR1 / 5
SGR3 / 6
SGR2 / 5
SGR2 / 6
SGR1 / 6
SGR3 / 7
SGR1 / 7
SGR3 / 8
SGR2 / 7
SGR2 / 8
SGR1 / 8
I>
I>>
t>>
t>, k
to>, ko
Io>
to>>
Io>>
SGF1 / 1
SGF1 / 2
SGF1 / 3
Io
BS
SGB / 1
SGB / 2
SGB / 3
SGB / 4
SGB / 5
SGB / 8
REMOTE SETTINGS
RELAY RESET
1
SGB / 6
RESET+
PROGRAM
1
SGB / 7
RESET+
PROGRAM
1
1
1
SGF1 / 4
SS1
SS2
SPCJ 4D24
TS1
TS2
SS3
RESET
TRIP
0.1...1s
SGF2 / 7
AR2
AR1
AR3
SGF2 / 8
SGF1 / 6
Fig. 1. Block diagram for overcurrent and earth-fault module SPCJ 4D24
I
L1
, I
L2
, I
L3
Measured phase currents
I
0
Measured neutral current
BS1
External blocking or resetting signal
SGF
Programming switchgroup SGF on the front panel
SGB
Programming switchgroup SGB on the front panel
SGR1...3
Programming switchgroups SGR on the front panel
TS1
Starting signal1 or auxiliary tripping signal depending on programming
of switchgroup SGR3
SS1
Start signal for stages selected with switchgroup SGR1
SS2
Trip signal 1 for stages selected with switchgroup SGR2
SS3
Trip signal 2 for stages selected with switchgroup SGR2
TS2
Tripping signal from stages selected with switchgroup SGR1
AR1, AR2, AR3
Starting signals to autoreclose unit
TRIP
Red indicator for tripping
Note!
All input and output signals of the module are
not necessarily wired to the terminals of every
relay assembly using this module. The signals
wired to the terminals are shown in the diagram
illustrating the flow of signals between the plug-
in modules of the relay assembly.