Relay hardware - Arc protection - Motor protection - Feeder protection - Back-up protection - Technical Manual - REX610 Protection and control - Relion Protection and Control - 1.2 - IEC - ANSI - 03.05.2023

REX610 Technical Manual

The relay has mandatory and optional slots. A mandatory slot always contains a module but an optional slot may be empty, depending on the composition variant ordered.

Table 1. Module slots

Module

Slot A1

Slot A2

Slot B

Slot C1

Slot C2

Slot D1

Slot D2

AIC2001

o

AIC2002

o

AIU2001

o

ARC2001

o

COM2001

DIO2001

PSU2001

● = Mandatory to have the modules in the slot

o = Optional to have one of the allocated modules in the slot

Figure 1. Hardware module slot overview of the REX610 relay

Table 2. Module description
Module Description
AIU2001 Analog input 4 × VT compression
AIC2001 Analog input 4 × CT compression
AIC2002 Analog input 4 × CT ring lug
PSU2001 24...250 VDC / 48...240 VAC + 2 × PO
DIO2001 Digital I/O 6 × BI + 4 × SO
COM2001 1 × RJ-45 + 1 × RS-485
ARC2001 3 arc sensor inputs

PO = Power Output

SO = Signal Output

The relay has a nonvolatile memory which does not need any periodical maintenance. The nonvolatile memory stores all events, recordings and logs to a memory which retains data if the relay loses its auxiliary supply.