7Sr46 Overcurrent And Earth Fault Relay Overview - Siemens Reyrolle 7SR46 Manual

Introduction

1.1 7SR46 Overcurrent and Earth Fault Relay Overview

1.1 7SR46 Overcurrent and Earth Fault Relay Overview
The 7SR46 Argus dual powered non-directional overcurrent and earth fault relay is a member of the Siemens
Reyrolle protection devices product family. The relay is developed using the latest generation of hardware
technology.
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Figure 1-1
NOTE
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In this Manual, the 7SR46 Argus dual powered non-directional overcurrent and earth fault relay will be
referred as 7SR46 Argus relay.
Device Functionality Overview
The 7SR46 Argus relay includes protection and supervision functions. The relay provides both definite-time
and inverse-time overcurrent and earth fault protection functions. The relay is CT powered with an option for
connection to an external auxiliary power supply.
The relay can be configured via a front USB port for local PC connection or rear electrical RS485 port for
remote connection. By using the Reydisp Evolution software, you can update the settings and view the fault
records (trip log) and the event records (event log).
The relay supports the IEC 60870-5-103 and Modbus RTU communication protocols which help in establishing
connection to SCADA. The relay can indicate the trip with local and remote flag indicator.
Main function
Inputs and outputs
Auxiliary voltage
Communication
Housing
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7SR46 Overcurrent and Earth Fault Relay
Overcurrent and earth-fault protection
•
3 current transformers compatible with 6 types of specific CTs (class 5P80)
•
2 binary inputs
•
2 binary outputs
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1 external trip input
•
1 pulse output
•
1 local flag and 1 remote flag indicator
AC 60 V to 240 V/DC 24 V to 240 V
Front USB port (for configuration via Reydisp Evolution) and rear RS485 port
Non-draw-out polycarbonate case with side mounting arrangement
Reyrolle, 7SR46 Device, Manual
C53000-G7040-C103-1, Edition 10.2022