ABB SYN5201A-Z V277 3BHB006714R0277 SYNCHROTACT 5 Automatic Single-Channel Synchronization Unit

Product Description

SYN5201A-Z V277 with part code 3BHB006714R0277 belongs to ABB SYNCHROTACT 5 series, a dedicated single-channel digital synchronizer for generator grid connection, 

manufactured in Switzerland.

It continuously monitors voltage, frequency and phase angle between generator and grid, automatically calculating closing advance time to trigger circuit breaker under fully 

synchronous conditions, avoiding large impact current during grid paralleling.

Equipped with multi-channel digital I/O, Profibus DP, Ethernet and IEC 61850 communication interfaces, it supports parameter configuration via SynView PC 

software and real-time fault event recording. Compatible with ABB UNITROL excitation systems, widely used as critical spare for thermal power, hydropower and distributed generator stations.

Technical Specifications

Model: SYN5201A-Z, Version: V277

Order PN: 3BHB006714R0277

Origin: Switzerland

Applicable frequency: 50Hz / 60Hz

Voltage measuring range: 200–690V AC

Synchronization precision: Phase angle ≤ ±0.5°

Auxiliary power: 85–264V AC / 100–300V DC wide range

Digital Input: 8pcs 24VDC configurable DI

Relay Output: 4pcs changeover relay contacts

Communication: Profibus DP, Ethernet, IEC 61850

Operating temperature: -20℃ ~ +60℃

Protection standard: IEC 60255, CE certified

Mount: Standard rack plug-in, IP20 cabinet installation

Key Features

High-precision automatic synchronization, effectively eliminate grid impact during generator paralleling.

Independent single-channel design, stable for single unit grid connection control.

Multiple industrial communication buses, seamless docking with DCS and excitation control systems.

Complete fault diagnosis and event timestamp recording for quick troubleshooting.

Wide auxiliary power input range, adapts to various power plant power supply environments.

Configurable voltage/frequency/phase difference protection thresholds.

Matches full UNITROL series excitation regulators perfectly.

Rugged industrial design for long-term 24/7 continuous power plant operation.