ABB SPAD 330 C - Connection Diagram; Block Schematic Overview

5
Fig. 3. Block schematic diagram of the biased differential relay SPAD 330 C.
Connection
diagram
U
aux
Auxiliary voltage
A, E Output relays
I RF Self-supervision
Ul Differential relay module of L1 phase SPCD 3C21
U2 Differential relay module of L2 phase SPCD 3C22
U3 Differential relay module of L3 phase SPCD 3C23
U4 Output relay module SPTR 5B4
U5 Power supply module SPGU 240A1, SPGU 48B2
U6 Input/output module SPTE 6B3
P1
S2
P2 P1 P2
S1
S2
S1
L1
L2
L3
SPAD 330 C
SPAD 330 C