Sepam B80 Busbar Protection Relay | Digital Busbar Differential Protection Relay for Power System Distribution

🎯 Product Introduction

The Sepam B80 Busbar Protection Relay is a high-performance digital protection relay designed specifically for differential protection of busbars in medium and high voltage power distribution systems. As a core component of power system automation, it provides fast, accurate fault detection and isolation to protect distribution busbars from short-circuit and grounding faults, ensuring the stability and safety of your entire power network.

It adopts advanced digital processing technology, integrates multiple protection, measurement, control and communication functions, and is widely used in substations, industrial power distribution systems, renewable energy power stations and other critical power distribution scenarios.

⚡ Core Functions & Features

✅ Main Busbar Differential Protection (87B)

High-sensitivity percentage differential algorithm, accurately identify internal busbar faults, tripping time less than 40ms

Built-in saturation adaptive technology, avoid misoperation caused by CT saturation during external faults

Supports single busbar, single busbar with section connection and double busbar application scenarios

✅ Comprehensive Backup Protection Functions

Phase overcurrent and earth fault overcurrent backup protection

Undervoltage / overvoltage alarm and protection

Breaker failure protection (BFP)

CT circuit abnormality monitoring and alarm

✅ Intelligent Digital Advantages

16-channel high-precision synchronous AC sampling, accurate acquisition of voltage and current data

Supports IEC 61850 MMS, Modbus TCP, DNP 3.0, IEC 103 communication protocols, seamlessly connect to SCADA/DCS system

Large color TFT local display with touch/button operation, real-time display operating data and fault information

2000+ event and fault recording, support event traceability and post-fault analysis

Self-diagnosis function, automatically monitor hardware and software operating status

📋 Main Technical Parameters

🏭 Wide Application Scenarios

🔹 Grid Substations: 10kV ~ 110kV busbar protection for transmission and distribution substations

🔹 Industrial Enterprises: Main/sectional busbar protection for steel, chemical, cement factories' distribution systems

🔹 Renewable Energy Power Stations: Collection busbar protection for wind farms and photovoltaic power stations

🔹 Data Centers: Busbar protection for critical power supply systems to ensure power supply reliability

🔹 Hydro & Thermal Power Plants: Station service busbar protection inside the power plant

🤝 Why Choose Nanjing Zhuneng Electric?

✅ All products passed strict factory insulation test, EMC test and electrical performance test, quality stable and reliable

✅ Professional technical team provides full support from product selection, parameter setting to on-site debugging

✅ We accept custom service for special voltage class, function requirement and brand OEM project

✅ Fast delivery from China warehouse, normal order shipped within 3-7 working days

✅ 12-month warranty after delivery, provide lifetime technical consultation and after-sales support

✅ Rich experience serving global power system customers, can provide English technical documents and drawings