5
Fig.3. Rear view of the overvoltage and undervoltage relay SPAU 130 C
Specification of input and output terminals
Contacts
Function
13-14
Phase-to-phase voltage U
12
(100 V)
13-15
Phase-to-phase voltage U
12
(110 V)
16-17
Phase-to-phase voltage U
23
(100 V)
16-18
Phase-to-phase voltage U
23
(110 V)
19-20
Phase-to-phase voltage U
31
(100 V)
19-21
Phase-to-phase voltage U
31
(110 V)
10-11
External blocking signal input
61-62
Auxiliary power supply.
When DC voltage is used the positive pole is connected to terminal 61.
65-66
Trip output 1 for stages U> and U< (TRIP 1)
68-69
Trip output 2 for stages U> and U< (TRIP 2)
80-81
Signal on tripping of stages U> and U< (SIGNAL 1)
77-78
Signal on tripping of stage U<, starting of stages U> and U< (START 1)
70-71-72 Self-supervision (IRF) alarm output. Under normal conditions the contact interval
70-72 is closed. When the auxiliary voltage disappears or an internal fault is detected,
the contact interval 71-72 closes.
Protective earth terminal
Made in Finland
13
14
15
16
17
18
19
20
21
70
71
72
61
62
65
66
68
69
80
81
77
78
10
11
TTL
B470701
Rx
Tx
The combined overvoltage and undervoltage
relay SPAU 130 C is connected to the optical
fibre communication bus by means of the bus
connection module SPA-ZC 17 or SPA-ZC 21.
The bus connection module is connected to the
D-type connector (SERIAL PORT) on the rear
panel of the relay. The opto-connectors of the
optical fibres are plugged into the counter con-
nectors Rx and Tx of the bus connection mod-
ule. The selector switches of the bus connection
module, by means of which the communication
mode is selected, are to be set in position "SPA".
