Basler BE1‑25A‑A2‑F5‑V3‑D0 Synchronizer Relay
Product Description
Basler BE1‑25A‑A2‑F5‑V3‑D0 belongs to the BE1‑25A series automatic synchronizer relay. It is designed for generator set grid‑connection scenarios to complete voltage, frequency and phase synchronization detection, and output control signals for circuit breaker closing operation. Basler BE1‑25A‑A2‑F5‑V3‑D0 integrates A2 voltage acceptance module, F5 frequency matching module, V3 voltage matching module and D0 dead‑bus disable option. It is compatible with diesel, hydro and other inertia‑varied generator units, supports generator‑to‑bus and bus‑to‑bus synchronous closing, reduces grid‑connection impact and ensures stable operation of power systems.
Depending on onboard hardware logic, Basler BE1‑25A‑A2‑F5‑V3‑D0 executes full synchronization logic without external host computer. It is widely applied in industrial power generation and backup power parallel retrofitting projects.
Technical Specifications
| Sensing Voltage Input | 70‑150Vac, 50/60Hz; generator input load less than 6VA, bus input load less than 2VA |
| Power Supply | 90‑132Vac AC or 70‑150Vdc DC; total power consumption below 20VA |
| Output Contacts | Circuit breaker closing normally‑open contact, 30A for 1‑second short‑term, continuous 7A, DC breaking capacity 0.3A@250Vdc |
| Operating Temperature | ‑40℃ ~ +70℃; storage temperature ‑65℃ ~ +100℃ |
| Option Hardware A2 | Three‑parameter voltage constraint for high/low bus voltage and voltage difference |
| Option Hardware F5 | Proportional pulse output for generator speed regulation |
| Option Hardware V3 | Proportional pulse output for generator voltage regulation |
| Option Hardware D0 | Dead‑bus closing logic disabled |
| Mechanical Construction | Standard S1 chassis, 19‑inch rack‑mountable, front‑panel DIP‑switch setting, LED status indicators, test plug interface |
| Multi‑Unit Capability | Stores up to 6 independent circuit breaker closing parameter sets to manage multiple generator synchronization workflows via external switching |
Core Advantages
- Equipped with adaptive proportional speed‑regulation algorithm to suppress frequency overshoot and oscillation, shorten synchronization waiting time and mitigate grid‑connection impact on generator sets
- Low sensing‑load design reduces burden on PT voltage transformers and cuts peripheral component costs
- All parameters configured via front‑panel knobs and DIP switches; PC software is not mandatory, lowering on‑site commissioning threshold
- Modular plug‑in function boards; faulty modules can be replaced individually instead of whole‑unit replacement to shorten downtime maintenance
- Compatible with generator units of various inertia, ranging from small‑capacity diesel units to high‑inertia hydro‑turbine units
- Predictive closing‑signal output compensates inherent circuit‑breaker closing delay for precise phase‑window capture
Product Features
- Complete closed‑loop synchronization control, simultaneously monitoring three grid‑connection conditions: phase difference, voltage deviation and frequency deviation
- LED status indicators visually display real‑time working conditions including fast‑speed, slow‑speed, over‑voltage, under‑voltage and sync‑ready status
- Built‑in test plug enables device function verification without cabinet internal wiring disconnection
- Independent pulse outputs for speed regulation and voltage regulation separately; pulse duration adjustable on‑demand on‑site
- Under D0 configuration, only standard synchronization logic is executed; closing is prohibited on unenergized buses to avoid mis‑operation risks
- Contact inputs accept external circuit‑breaker auxiliary contacts to obtain breaker position status for logic judgment
- Wide temperature resistance, suitable for outdoor power cabinets and container‑type generator sets with heavy temperature fluctuation
Application Fields
- Diesel generator set parallel grid‑connection
- Hydro generator set synchronizing closing
- Multi‑unit parallel of station backup power supply
- Bus‑to‑bus interconnection synchronization control
- Data‑center backup power generation system
- Retrofit of synchronizing cabinets for industrial self‑owned power plants
- Multi‑unit synchronization system for marine power stations
- Monitoring for fast power switching loops
Product Comparison
Basler BE1‑25A‑A2‑F5‑V3‑D0 is a fully‑automatic synchronizer relay with built‑in speed‑and‑voltage‑regulating pulse outputs, which actively drives units to fulfill synchronization conditions.
Basler BE1‑25 is a synchronism‑check relay, which only performs phase and voltage verification without outputting speed‑or‑voltage‑regulating control pulses. It merely permits closing signals for projects already equipped with external speed & voltage regulators.
Suffix variations of BE1‑25A series derive from optional modules: A1/A2 defines voltage constraint logic; F1/F5 corresponds to different frequency output modes; V1/V2/V3 distinguishes voltage‑regulation output types; D0/D1 governs dead‑bus functions.
BE1‑25A‑A2‑F5‑V3‑D0 adopts proportional‑pulse output mode. Compared with continuous‑contact‑output models, it delivers smoother adjustment and better suitability for high‑inertia hydro‑turbine units.
Related Matching Products
- 9146624100 Board Expander, for hot‑swap module debugging and maintenance
- Basler BE1‑25 Series Test Plug, factory‑standard accessory for on‑site analog‑signal simulation test
- Basler AVR Voltage Regulator, interfaced with voltage‑regulation output of BE1‑25A‑A2‑F5‑V3‑D0 to control generator excitation
- Basler Speed Controller, receives F5 speed‑regulation pulses to adjust generator rotating speed
FAQ
Q: What is the core difference between Basler BE1‑25A‑A2‑F5‑V3‑D0 and BE1‑25A‑A2‑F5‑V3‑D1?
A: Main hardware bodies are identical. D1 enables dead‑bus function and outputs closing signals directly upon de‑energized bus; D0 disables dead‑bus logic and permits closing only when full synchronization conditions are satisfied.
Q: Is PC software mandatory for parameter configuration of Basler BE1‑25A‑A2‑F5‑V3‑D0?
A: No. All parameters are configured via front‑panel knobs and DIP switches. Commissioning can be completed on‑site without host computer.
Q: How many generator sets can Basler BE1‑25A‑A2‑F5‑V3‑D0 manage for synchronous closing?
A: The unit stores 6 sets of circuit‑breaker parameters internally. Multi‑generator synchronization management is realized by external contact switching. Simultaneous parallel synchronization for multiple units is not supported.
Q: Is Basler BE1‑25A‑A2‑F5‑V3‑D0 compatible with 50Hz or 60Hz power grid?
A: Both 50Hz and 60Hz are supported. Frequency selection is completed via hardware DIP switch without hardware modification.
Q: How to avoid suffix‑configuration errors when purchasing Basler BE1‑25A‑A2‑F5‑V3‑D0?
A: Verify the complete suffix A2‑F5‑V3‑D0 in full model number. Any single character or digit change will alter functions. Do not omit any suffix character.
Q: Shall we replace the whole unit when Basler BE1‑25A‑A2‑F5‑V3‑D0 fails?
A: No. Function boards adopt plug‑in structure. Replace only the faulty module after fault location to cut overall replacement cost.
Q: Is Basler BE1‑25A‑A2‑F5‑V3‑D0 suitable for marine power‑station operating conditions?
A: Wide‑temperature hardware is adaptable. Additional external anti‑vibration reinforcement shall be implemented in project execution to meet marine working‑condition requirements.
Q: Can closing‑output contacts of Basler BE1‑25A‑A2‑F5‑V3‑D0 directly drive circuit‑breaker coils?
A: Direct coil driving is not recommended. Closing contacts serve as signal‑output contacts. External intermediate relays are suggested to drive circuit‑breaker closing coils.
Recommended Same‑Brand Models
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- BE1‑25A‑A2‑F1‑V2‑D1, Automatic Synchronizer Relay
- BE1‑25A‑A1‑F5‑V3‑D1, Automatic Synchronizer Relay
- BE1‑87O, Overcurrent Protection Relay
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- BE1‑40Q, Loss of Excitation Relay
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- BE1‑78, Phase Angle Monitor Relay
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- BE1‑81U, Underfrequency Relay
- BE1‑PR‑100, Protection Relay
Notes
- Voltage‑input circuit of Basler BE1‑25A‑A2‑F5‑V3‑D0 shall match PT secondary output. Direct connection to high‑voltage primary circuit is strictly prohibited.
- Isolate wiring for speed‑and‑voltage‑regulation pulse‑output loops to avoid module damage caused by short‑circuit.
- Ensure ventilation & heat dissipation for cabinet installation; do not arrange high‑heat power devices nearby to guarantee long‑term operating temperature range.
- Perform full‑function analog synchronization test with test plug before commissioning of each grid‑connection project; confirm correct logic actions before connecting to real generator units.
- Pulse‑duration parameters shall be re‑calibrated on‑site for units with different inertia parameters; parameters copied from other projects cannot be used directly.
Product Tags
Basler BE1‑25A‑A2‑F5‑V3‑D0,synchronizer relay,automatic synchronizer,BE1‑25A series,generator synchronizing relay,generator paralleling relay
