Original LEROY-SOMER R180 AVR Diesel Generator Power Supply Automatic Voltage Regulator

Wide Application Range

• Original matching for Leroy-Somer TAL40/TAL42/TAL44/TAL46/TAL47/TAL49 brushless alternators (25~250kVA)
• Industrial, hospital, data center, financial building key load standby diesel generator sets
• Marine main and auxiliary generators, offshore platform uninterruptible power supply equipment
• Multi-generator parallel power station, factory centralized power distribution system
• Mining, telecom base station, remote unattended off-grid standby power equipment
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Key Product Features

1. Original Leroy-Somer Official Design, Perfect PMG/AREP Dual Excitation Compatibility
   Specially developed for Leroy Somer brushless generators, compatible with both PMG permanent magnet excitation and AREP+ auxiliary winding excitation modes, no circuit modification required for direct replacement, completely consistent with factory original wiring definition.
    
2. High Precision Closed-Loop Voltage Regulation, Excellent Dynamic Load Response
   Steady-state voltage accuracy up to ±1%, fast transient response during sudden load on/off, effectively suppress voltage surge or drop, avoid damage to precision instruments, UPS, PLC and sensitive electrical equipment caused by unstable power supply.
    
3. Built-In Voltage Droop Function, Safe Multi-Generator Parallel Operation
   Standard droop characteristic circuit, realizes active power automatic average distribution among multiple parallel gensets, solves reverse power circulation, current imbalance and unstable parallel operation problems, ideal for large-capacity centralized power stations.
    
4. Multi-Layer Built-In Safety Protection Mechanism

• Over-excitation limiting: Prevent excitation overcurrent burnout of rotating rectifier and excitation winding under short-circuit fault
• Loss-of-sensing voltage protection: Automatically cut off excitation after 5s when voltage sampling line is open circuit to avoid runaway overvoltage
• Under-frequency V/Hz protection: Limit output voltage when engine speed drops to protect loads from low-frequency overvoltage damage
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5. Local + Remote Dual Voltage Adjustment Modes
   Onboard V-ADJ potentiometer for on-site fine calibration; reserved external potentiometer interface supports remote cabinet voltage adjustment, convenient for unattended centralized control scenarios.
    
6. Industrial Sealed PCB + Wide Temperature Environmental Adaptability
   Anti-surge, anti-electromagnetic interference circuit design, stable operation in high-temperature, dusty, humid engine room and power distribution room harsh environments; standard embedded panel installation, easy to replace old failed AVR on site.
    

Common Equipment Failures Solved

• Generator output voltage drifts severely, unstable under variable load, unable to maintain rated 400V/230V voltage
• Multiple generators cannot be connected in parallel, circulating current occurs, reverse power trips frequently
• Sampling line loose or open circuit leads to generator overvoltage runaway, burning downstream electrical equipment
• Engine low-speed operation causes overvoltage, damaging UPS, frequency converters and precision control instruments
• Generic non-original AVR has poor compatibility, frequent over-excitation faults and short service life, unable to match PMG excitation system