ABB REU 523 Technical Reference Manual page 48

REU 523
48
Combined Overvoltage and Undervoltage Relay
Technical Reference Manual
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Table 4.2.1-1 Inputs for voltages
Terminal Function
X1.1-1
)
*
U
12
X1.1-3 U
12
X1.1-4 )
U *
23
X1.1-6 U
23
X1.1-7 )
U *
31
X1.1-9 U
31
)
* Note that the wiring has to be done identically for each of the matching transformers used
Table 4.2.1-2 Auxiliary supply voltage
Terminal Function
X2.1-1 Input+
X2.1-2 Input-
1MRS 750942-MUM
.