Siemens Reyrolle 7SR45 Self Powered Overcurrent Protection Relay

Product Description

Siemens Reyrolle 7SR45 Self Powered Overcurrent Protection Relay 

Description:

NON DIRECTIONAL OVER CURRENT PROTECTION REYROLLE 7SR45 NUMERICAL RELAY

The Reyrolle 7SR45 Argus self-powered/dual powered non-directional over current and earth fault relay is developed using the latest generation of hardware technology and is available in multiple variants depending on the current transformer (CT), binary input/binary output, power supply, and communication configuration.

The Reyrolle 7SR45 numeric relay provides both definite time and inverse time over current and earth fault protection functions ensuring sensitivity with a minimum operate setting of 0.2  I rated for phase over current protection. The relay is CT powered with an option for connection to an external auxiliary supply to provide additional security and communications port for connecting to SCADA. The compact non draw-out design provides front fascia to the navigation keys, LCD, and front USB port for ease of use

Function:

Protection Functions

• Instantaneous Over current Protection (50)
• Instantaneous Derived Earth Fault (50N)
• Instantaneous Measured Earth Fault (50G)
• Time Delayed Over current (51)
• Time Delayed Derived Earth Fault (51N)
• Time Delayed Measured Earth Fault (51G)
• Line Check / Switch On To Fault (SOTF)
• Inrush Restraint

Features

• Self Powered
• 10 Fault Records
• 100 Event Records
• Password Protection
• Self Monitoring
• Over current Protection Functions (Instantaneous and Delayed)
• Relay Integration via Reydisp Evolution PC Software
• Sensitivity of 20% Nominal Current

Hardware

• 4 Current Transformer with 1A or 5A Inputs
• 2 Binary Inputs
• 2 Latched Binary Outputs, 1 changeover and 1 normally open
• 1 Pulsed Output

User Interface

• 16 Character x 2 Line Backl it LCD
• Menu Navigation Keys
• 9 Predetermined LEDs for Easy Use
• Front USB Interface