Original ABB SYCHROTACT5 dual‑channel automatic synchronizer relay for generator grid‑connection control, supports auto‑synchronization and multi‑protection function.

Product Overview

3BHB006716R0277 (SYN5302a‑Z,V277) belongs to ABB SYCHROTACT 5 series automatic synchronizer controller. It adopts dual‑channel redundant measuring architecture, accurately compares voltage, frequency and phase angle between generator and power grid, executes automatic synchronizing closing control for generator parallel‑in operation. It integrates over‑voltage, under‑voltage, over‑frequency, under‑frequency, reverse‑power and synchronism‑check protection functions. Equipped with local LCD display and keypad for parameter setup and status viewing, supports multiple industrial communication protocols for remote monitoring and configuration. Widely used as maintenance spare part for thermal power, hydropower station, substation and industrial self‑generation power system control cabinets.

Key Features

• Dual independent redundant measuring channels, improves reliability for critical grid‑connection operation
• High‑precision measurement for voltage, frequency and phase angle, realizes accurate auto‑synchronization closing
• Comprehensive built‑in protection functions: over/under‑voltage, over/under‑frequency, reverse‑power and synchronism‑check
• Local LCD display and keypad for on‑site parameter setting, status checking and fault query
• Supports IEC61850, Modbus TCP/RTU, PROFIBUS‑DP multi‑protocol remote communication
• Multiple programmable relay output contacts for breaker control and alarm signal output
• Event recording function with time‑stamp for fault post‑mortem analysis

• Panel‑mount structure, industrial‑grade hardware adapts to power‑plant cabinet environment

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Technical Specifications

• Brand: ABB
• Model: 3BHB006716R0277 (SYN5302a‑Z,V277)
• Module Type: Dual‑Channel Automatic Synchronizer Controller
• Power Supply: 20‑30VDC, redundant power input
• Frequency Range: 40‑70Hz
• Measuring Function: Voltage, frequency, phase‑angle difference detection
• Communication: IEC61850, Modbus TCP, Modbus RTU, PROFIBUS‑DP
• I/O: Multi‑group voltage inputs, digital inputs, programmable relay outputs
• Operating Temp: ‑25℃ ~ +70℃
• Storage Temp: ‑40℃ ~ +85℃
• Humidity: 5‑95% non‑condensing

• Installation: Cabinet panel‑mount installation

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Compatibility

Applied for generator and busbar synchronizing parallel‑in scenario. Parameter configuration download, voltage loop inspection and synchronizing function simulation test required after replacement.