Seg XRI1-IR, Руководство пользователя

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4 TB XRI1-IR 02.00 E
3 Design
3.1 Connections
Figure 3.1: Connection diagram XRI1-IR
3.1.1 Analog input circuits
The protection unit receives the analog input signals of
the phase currents IL1 (1S1-1S2), IL2 (2S1-2S2), IL3
(3S1-3S2), phase voltages U1 (L1-N1), U2 (L2-N2),
U3 (L3-N3) each via separate input transformers. The
N1, N2 and N3 are bridged externally. The con-
stantly detected current measuring values are galvani-
cally decoupled, filtered and finally fed to the ana-
log/digital converter.
3.1.2 Blocking input
The blocking functions adjusted before will be blocked
if an auxiliary voltage is connected to (terminals)
C1/C1L or C1/C1H. (See chapter 6.2.12)
3.1.3 External reset input
By applying the aux. voltage C2/C2L or C2/C2H,
indication and output relays are reset. (see chapter
6.4)
3.1.4 Output relays (default settings)
The XRI1-IR is equipped with 5 output relays. Apart
from the relay for self-supervision, one relay with 2
changeover contacts for signalling, all protective func-
tions can be optionally assigned:
•
Output relays 1;
11, 12, 14 und 21, 22, 24
•
Signal overcurrent (I>);
31, 32, 34 und 41, 42, 44
•
Signal „Short Circuit Tripping“ (I>>)
51, 52, 54
•
Aux. Relais
61, 62, 64
•
Signal selfsupervision
71, 72, 74
All trip and alarm relays are working current relays, the
relay for self supervision is an idle current relay.
See connection diagram relay outputs.
Except the self-supervision, all relays can be assigned
to different functions. (see 6.1.12).