The ABB SYN5201A-Z V277 (3BHB006714R0277) is a high-performance automatic single-channel synchronizing device in ABB’s SYNCHROTACT 5 family. It ensures safe and accurate synchronization of synchronous generators with power lines or paralleling of busbars, combining voltage/frequency matching with synchrocheck monitoring in a compact, robust unit.
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The ABB SYN5201A-Z V277 (3BHB006714R0277) is an automatic single-channel synchronizer designed for demanding power applications. It automatically matches voltage and frequency, then issues breaker closing commands only when safe synchronous conditions are met. It also functions as a synchrocheck for manual operations, including dead bus/dead line detection. The device supports up to 7 parameter sets for different paralleling points and offers flexible communication options for integration into control systems.
Built for reliability, it features a modular plug-in design and is widely used in power plants and substations.
Automatic Synchronization: Voltage and frequency matching with precise breaker command generation.
Synchrocheck Functionality: Monitors conditions for manual paralleling, including dead bus/line.
Multiple Parameter Sets: Up to 7 configurable sets selectable via digital inputs for various circuit breakers.
High Safety: Single-channel design with robust component selection and software for security against incorrect paralleling.
Flexible Communication: Options including Modbus, Profibus, LON, and IEC 61850.
User-Friendly: Front panel operation or SynView PC software for configuration, real-time monitoring, transient recording, and event logging.
Robust Construction: Wide auxiliary voltage range, strong EMC compliance, and industrial-grade durability.
Compact & Modular: Plug-in casing with optional surface mounting.
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Product Type: Automatic Single-Channel Synchronizer / Synchrocheck
Ordering Code: SYN5201A-Z V277, 3BHB006714R0277
Auxiliary Voltage: 24–250 VDC / 100–230 VAC (wide range)
Measuring Inputs: Voltage U1/U2 (nominal 50–130 V, configurable via transformers); Frequency 50/60 Hz (model V277)
Accuracy: High precision phase angle and frequency difference measurement
Parameter Sets: Up to 7
Digital I/Os: Freely configurable inputs/outputs
Communication: RS232 for SynView; optional fieldbus (Modbus, Profibus, LON, IEC 61850)
Casing: Plug-in type (option for surface mounting)
Protection Class: IP54 front / IP50 rear (typical)
Operating Temperature: +5°C to +70°C (or wider industrial range)
Mounting: DIN rail or panel compatible
Dimensions / Weight: Compact modular profile (approx. 0.3–4 kg depending on config)
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Power generation plants (generator to grid synchronization)
Substations and switchyards (line or busbar paralleling)
Industrial captive power and cogeneration systems
Hydro, thermal, and gas power stations
Retrofit and modernization of existing synchronization equipment
High-reliability manual and automatic paralleling applications
Q: What is the main function of the ABB SYN5201A-Z V277?A: It is an automatic single-channel synchronizer that safely parallels generators with the grid or synchronous lines, with integrated synchrocheck capability.
Q: What is the difference between SYN5201 and SYN5202?A: SYN5201 is single-channel; SYN5202 is dual-channel with independent diverse processors for even higher safety.
Q: How many parameter sets does it support?A: Up to 7 different parameter sets for handling multiple paralleling points or configurations.
Q: Does it support manual paralleling?A: Yes, it can operate in synchrocheck mode to monitor conditions and enable safe manual commands, including dead bus/line.
Q: What software is used for setup and diagnostics?A: SynView PC tool for parameter configuration, real-time displays, transient recording, and event logging.
Q: What voltages and frequencies does it support?A: Wide auxiliary voltage (24–250 VDC / 100–230 VAC) and nominal system frequencies of 50/60 Hz (V277 variant).
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