4
Connections
Fig. 2. Connection diagram for the combined overvoltage and undervoltage relay SPAU 130 C
U
aux
Auxiliary voltage
A,B,C,D,E
Output relays
IRF
Self-supervision signal
SS_
Start signal
TS_
Trip signal
SGR
Switchgroup for configuring trip and alarm signals
SGB/5
Switch for blocking the undervoltage stage
TRIP_
Trip output
SIGNAL1
Signal on relay operation
START1
Start signal or signal on relay operation
U1
Combined overvoltage and undervoltage relay module SPCU 3C14
U2
Power supply and I/O module SPTU 240S1 or SPTU 48S1
U3
I/O module SPTE 3E15
SERIAL PORT
Serial communication port
SPA-ZC_
Bus connection module
Rx/Tx
Optical-fibre receiver (Rx) and transmitter (Tx) of the bus connection module
≅
SGR/1
U2
U3
U3
1
1
1
1
D
C
B
A
+ -
Uaux
E
+
-
(~)
(~)
L1
L2
L3
A
N
a
SGR
100V
110V
19 20 21
10 11
61 62
70 71 72
77 78
80 81
68 69
65 66
7
5
3
2
4
6
8
SPAU 130 C
_
SPA-ZC_
Rx
Tx
START1
SIGNAL1
TRIP2
TRIP1
BS
IRF
100V
110V
16 1718
100V
110V
13 14 15
IRF
3U<
TS2
TS1
SGB/5
SS1
SS2
U1
I/O
t<
t>,k>
3U>
SERIAL
PORT
n