Overview
7SR46 dual powered relay is a non-directional overcurrent and earth-fault protection relay primarily intended
for secondary distribution in electrical networks.
The 7SR46 Argus relay is designed to operate with/without an auxiliary power supply. The relay is powered
primarily from the auxiliary voltage even though all other power sources are available.
In the absence of auxiliary voltage, the relay is powered by CT input.
The relay offers definite-time and inverse-time overcurrent and derived earth fault protection functions in
accordance to IEC and ANSI standards.
The 7SR46 relay is targeted for the following applications:
•
Protection relay for Ring Main Units (RMU)
•
Backup protection relay for the medium-voltage applications
•
Protection applications in remote locations where auxiliary power supply is not available
•
Control and relay panels refurbishment of outdated electromechanical protection relays
[dw_7SR46_Functional Block Diagram, 1, en_US]
Figure 5-1
Functional Diagram
The relay provides 2 setting groups - Group number (Gn) 1 to 2 which can both be viewed/edited via the fascia
or PC Software tool.
5.1
Applications
5.1 Overview
70 Reyrolle, 7SR46 Device, Manual
C53000-G7040-C103-1, Edition 10.2022
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