Why the 7SR46 Argus Relay is a Game-Changer for Medium-Voltage Feeder Protection

The Siemens Reyrolle 7SR46 Argus 4XL Relay is a high-performance protection device designed for industrial feeders, utilities, and network applications. With its self-powered or dual-powered design and non-directional operation for specific CTs, this relay ensures reliable system performance, minimizes downtime, and enhances overall power system stability.

As a trusted supplier and dealer of Siemens Reyrolle 7SR46 Argus 4XL Relays in Mumbai, we provide genuine products at competitive prices. Customers benefit from quick delivery, local stock availability, and reliable after-sales support, making us a preferred choice for engineers, EPC contractors, and industrial operators.

Key Features & Benefits:

Advanced feeder protection with self/dual-powered operation
Non-directional, CT-specific design for accurate protection
High-performance and durable construction for long service life
Available at best price with fast delivery in Mumbai
Local technical support and trusted Siemens-authorized product

Protection Functions:
Instantaneous overcurrent – phase (50)
Line check / Switch onto fault (SOTF) (50)
Instantaneous earth fault – derived (50N)
Time-delayed overcurrent – phase (51)
Time-delayed earth fault – derived (51N)
Two independent settings groups for flexible operation

Supervision Functions:
81HBL2 Inrush current detection for transformer and network stability

Ancillary Functions:
49T High-speed trip via binary input
49T High-speed trip via external trip initiation
86 Lockout function for enhanced system security

1. [phone]
[email protected] Authorised Platinum Channel Partner www.reliservsolution.net Why the 7SR46 Argus Relay is

a Game-Changer for Medium-
Voltage Feeder Protection? Reliserv Solution

2. [phone]
[email protected] Authorised Platinum Channel Partner www.reliservsolution.net Reliserv Solution Introduction
The demand for reliable, intelligent, and fast protection systems in medium-voltage
networks continues to rise. As power systems evolve with growing renewable integration
and automation, advanced protection devices like the Siemens 7SR46 Argus Relay play a
pivotal role.
This innovative relay delivers high-speed fault detection, flexible communication
protocols, and superior selectivity, ensuring optimal feeder protection for industrial and
utility applications.
The 7SR46 Argus combines Siemens’ legacy of reliability with modern digital intelligence,
making it a game-changer in medium-voltage feeder protection.

3. [phone]
[email protected] Authorised Platinum Channel Partner www.reliservsolution.net Reliserv Solution Siemens 7SR46 Argus Relay
The Siemens 7SR46 Argus Relay is part of the Reyrolle 7SR range,
engineered for directional and non-directional overcurrent protection of
feeders, cables, and transformers.
It is designed to protect medium-voltage networks against short circuits,
earth faults, and overloads, ensuring stable system operation.
Key Characteristics:
Compact, modular design suitable for control panels.
Integrated event recording and disturbance logging.
Flexible operation modes (directional/non-directional).
Advanced communication capabilities for SCADA and automation
systems.

4. [phone]
[email protected] Authorised Platinum Channel Partner www.reliservsolution.net Reliserv Solution Protection Functions and Capabilities
The 7SR46 Argus Relay offers a wide range of protection features to ensure safe
and efficient network operation.
Main Protection Functions Include:
Three-phase overcurrent protection (50/51) – Detects and isolates phase
faults.
Earth fault protection (50N/51N) – Ensures system grounding safety.
Directional protection (67/67N) – Provides precise fault direction identification.
Thermal overload protection (49) – Safeguards cables and transformers.
Under/overvoltage detection (27/59) – Monitors voltage stability.
These features collectively enhance system reliability and reduce downtime
during disturbances.

5. [phone]
[email protected] Authorised Platinum Channel Partner www.reliservsolution.net Reliserv Solution Enhancing Medium-Voltage
Feeder Protection
The 7SR46 Argus Relay is engineered to provide fast, selective, and
dependable feeder protection, which is essential for medium-voltage
networks.
Here’s how it enhances protection:
Fast tripping times minimize equipment damage.
Adaptive protection settings adjust to varying load conditions.
Directional elements ensure accurate fault isolation, even in complex
networks.
Automatic reclosing and blocking functions support a continuous
power supply.

6. [phone]
[email protected] Authorised Platinum Channel Partner www.reliservsolution.net Reliserv Solution Communication and Integration
In the era of smart grids, seamless communication between devices is
critical. The 7SR46 Argus Relay supports multiple communication
protocols to ensure interoperability with various control systems.
Supported Protocols:
IEC 61850 – Enables efficient data exchange in digital substations.
Modbus RTU and DNP3.0 – Compatible with existing SCADA systems.
IEC 60870-5-103 – Ensures reliable communication in legacy networks.
This communication versatility allows easy integration into SCADA, DCS,
and remote monitoring systems, enabling real-time supervision and
control of feeders.

7. [phone]
[email protected] Authorised Platinum Channel Partner www.reliservsolution.net Reliserv Solution Smart Monitoring & Diagnostic Features
The Siemens 7SR46 Argus Relay includes intelligent monitoring
features that enhance predictive maintenance and fault analysis.
Key Diagnostic Capabilities:
Event and fault recording for up to 100 events.
Disturbance records to analyze waveform data.
Self-diagnostic functions for relay health monitoring.
Trip circuit supervision for breaker status tracking.

8. [phone]
[email protected] Authorised Platinum Channel Partner www.reliservsolution.net Reliserv Solution Benefits of Using the 7SR46 Argus Relay
Top Benefits:
Superior fault detection accuracy for minimal downtime.
Optimized feeder coordination to avoid nuisance tripping.
Reduced maintenance efforts via self-diagnostics.
Enhanced system safety through precise protection algorithms.
Scalable and future-proof design for smart grid integration.
Whether in industrial networks or utility feeders, the 7SR46 ensures
consistent and safe power delivery.

9. [phone]
[email protected] Authorised Platinum Channel Partner www.reliservsolution.net Reliserv Solution Applications in Power Systems
The 7SR46 Argus Relay is versatile and suitable for multiple power
system environments.
Common Applications Include:
Medium-voltage feeders and substations.
Industrial power distribution systems.
Renewable energy grid connections.
Transformer and motor protection setups.
Rural and urban utility networks.

10. [phone]
[email protected] Authorised Platinum Channel Partner www.reliservsolution.net Reliserv Solution Technical Highlights
Key Technical Specifications:
Rated current: 1 A / 5 A.
Operating voltage: 24–250 V DC / AC.
Operating frequency: 50/60 Hz.
Communication ports: RS485, Ethernet.
Mounting type: Panel or rack mountable.
Display: Multifunction LCD with navigation keypad.
These specifications make the relay a compact yet powerful protection
unit suited for modern substation environments.

11. [phone]
[email protected] Authorised Platinum Channel Partner www.reliservsolution.net Reliserv Solution Conclusion
The Siemens 7SR46 Argus Relay represents a significant leap forward
in medium-voltage feeder protection. By integrating fast protection
logic, digital communication, and advanced fault analysis, it
enhances grid stability while reducing operational costs.
For industries and utilities seeking intelligent, reliable, and scalable
protection solutions, the 7SR46 Argus is the ultimate choice.

12. [phone]
[email protected] Authorised Platinum Channel Partner www.reliservsolution.net Reliserv Solution