Siemens Siprotec 4 SIPROTEC 7SS52 Protection Relay

Siemens Siprotec 4 SIPROTEC 7SS52 Protection Relay – 48 feeders (max), text display, decentralized.

The Siemens SIPROTEC 7SS52 is a high-performance decentralized busbar protection relay. Additionally, designed to ensure reliable power system operation in substations, industrial facilities, and power plants in Mumbai. In addition, supporting up to 48 feeders and featuring a clear text display, this relay provides both technical precision and operational ease.

Engineered for industrial and substation applications. Moreover, the SIPROTEC 7SS52 safeguards critical electrical infrastructure with advanced decentralized protection, making it ideal for engineers, technical teams, and system operators. In addition, its robust design ensures high reliability, simplified monitoring, and efficient fault management.

As a trusted SIPROTEC 7SS52 supplier in Mumbai, we offer this relay to help businesses secure their power systems. Specially, while optimizing safety and performance. Whether you’re upgrading existing infrastructure or implementing new installations, the SIPROTEC 7SS52 delivers the perfect combination of technical excellence, local availability, and operational efficiency.

Key Features:

• Decentralized busbar protection for enhanced safety
• Supports up to 48 feeders for large-scale operations
• Clear text display for easy monitoring and control
• Ideal for substations, industrial facilities, and power plants in Mumbai
• Reliable and high-performance Siemens engineering

7ss52 Breaker Failure Protection Functions

• Breaker failure protection (single-phase with/without current)
• Separate parameterization is possible for busbar and line faults
• Independently settable delay times for all operation modes
• 2-stage operation bay trip repeat/trip busbar
• Low-current mode using the circuit breaker auxiliary contacts

Siprotec 7ss52 Busbar Protection Additional Protection Functions

• End-fault protection with intertrip or bus zone trip
• Backup overcurrent protection per bay unit
• Independent breaker failure protection per bay unit

Features

• Distributed or centralized installation
• Easy expansion capability
• Integrated commissioning aids
• Universal hardware

Communication Interfaces

• FO interface
  • IEC 60870-5-103 protocol
• Electrical interface
  • IEC 61850 protocol with EN 100 module (firmware V4.6)

SIPROTEC 4 leads the way in integrating protection, control, measurement, and automation functions in one device. Additionally, the homogenous system platform, the unique DIGSI 4 engineering program. Moreover, extensive experience of more than a million successfully operating devices in the field worldwide.