ABB SPAC 531 C User Manual And Technical Description page 20

Terminals
and wiring
20
The SGB switches on the PC board of the
directional earth-fault module SPCS 3C4 have
the following functions:
Switch Function
SGB/1 Links the starting signal of stage Iϕ> to the starting input AR3 of the
auto-reclose module (generally the starting input of AR initiated by
the low-set earth-fault stage)
SGB/2 Links the starting signal of stage Iϕ>> to the starting input AR3 of the
auto-reclose module
SGB/3 Links the starting signal of stage Iϕ>> to the starting input AR1 of the
auto-reclose module
SGB/4 Forms from the blocking input signal BS1 a blocking signal for the
tripping of stage Iϕ>
SGB/5 Forms from the blocking input signal BS1 a blocking signal for the
tripping of stage Iϕ>>
SGB/6 Forms from the blocking input signal BS2 a blocking signal for the
tripping of stage Iϕ>
SGB/7 Forms from the blocking input signal BS2 a blocking signal for the
tripping of stage Iϕ>>
SGB/8 No function in SPAC 531/631 C. Has to be in position 0
Note!
Only one of the switches SGB/2 and SGB/3 is
allowed to be in position 1.
All external conductors are connected to the
terminal blocks on the rear panel. Terminal
block X0 consists of fixed screw terminals fas-
tened to the energizing input module. The
connectors X1...X6 are detachable multi-pole
connector strips with screw terminals.
The male part of the multi-pole connector strips
are fastened to the mother PC board. The fe-
male parts with accessories are delivered to-
gether with the feeder terminal. The female
connector part can be secured in place by means
of fixing accessories and screws.
The measuring signal inputs are connected to
terminal block X0. Each terminal is dimen-
sioned for one max. 6 mm
2
mm wires.
Protective earth is connected to the screw, marked
with the earth symbol.
The binary inputs and contact outputs of the
overcurrent and earth-fault relay modules are
connected to the multi-pole connectors X1 and
X2. The auxiliary power supply is connected to
the multi-pole connector X1. The binary in-
puts, mA inputs and contact outputs of the
control module are connected to the multi-pole
connectors X3...X6. One max. 1.5 mm
two max. 0.75 mm
one screw terminal.
2
or two max. 2.5
Default
value
1
0
0
0
0
0
0
0
2
wire or
2
wires can be connected to