The Leroy-Somer D550 Digital Automatic Voltage Regulator (AVR) is an advanced electronic control device designed to maintain stable and precise output voltage in synchronous alternators and industrial generator sets. It automatically adjusts the alternator excitation current in response to variations in electrical load, helping to ensure reliable power generation and consistent voltage performance.
The D550 supports multiple excitation configurations, including SHUNT, AREP, and PMG, depending on the alternator design. It provides digital voltage regulation, configurable operating parameters, monitoring functions, and protective features to support safe and efficient generator operation.
The regulator offers advanced configuration and diagnostic capabilities through compatible software, facilitating commissioning, maintenance, and troubleshooting. Its communication capabilities support integration with compatible generator control and monitoring systems.
The D550 is suitable for industrial power plants, commercial power generation, standby generator systems, and other applications requiring precise voltage regulation, operational reliability, and dependable alternator excitation control.
Accurate voltage regulation: Maintains stable alternator output voltage as electrical loads change.
Digital control: Enables configuration and adjustment of regulator parameters.
Multiple excitation options: Compatible with SHUNT, AREP, and PMG systems, subject to alternator specifications.
Generator protection: Supports configurable protective functions against specified abnormal operating conditions.
Monitoring and diagnostics: Facilitates system adjustment, fault investigation, and maintenance.
Industrial application: Suitable for compatible synchronous alternators used in continuous-duty and standby power systems.
Commissioning support: Allows operating parameters to be configured using compatible software.
Reliable operation: Helps maintain consistent generator performance during changing load conditions.
Product: Digital Automatic Voltage Regulator (AVR) Brand: Leroy-Somer / Nidec Model: D550 Application: Alternator excitation and generator output voltage regulation Product category: Generator AVR / Digital Voltage Regulator






Price:
Price 287775.0 INR / Piece
Minimum Order Quantity : 1 Piece
Frequency (MHz) : 50/60 Hertz (HZ)
Control System : Automatic electronic excitation control system (solidstate AVR) for synchronous generators.
Warranty : 12 MONTH
Usage : Other
Price 87875.0 INR / Piece
Minimum Order Quantity : 1 Piece
Frequency (MHz) : 50/60 Hertz (HZ)
Control System : Electronic Automatic Voltage Control
Warranty : 12 MONTH
Usage : SVC
Price 398000.00 INR / Unit
Minimum Order Quantity : 1 Unit
Frequency (MHz) : 5060 Hertz (HZ)
Control System : Automatic
Warranty : Yes
Usage : Other, Industrial
Minimum Order Quantity : 1 Unit
Frequency (MHz) : 5060 Hertz (HZ)
Control System : Automatic
Warranty : Yes
Usage : Other, Industrial