Generator Parts / AVR Description of Generator Parts / AVR
AVR, an abbreviation for Automatic Voltage Regulator, is important part in synchronous generators. We has a wide variety of original spare parts, which are perfect for the replacement of most of worldwide famous Generators with the engine brand of Perkins, Lovol-Chinese Perkins, Lister-Petter, Deutz, John Deere, Volvo Penta, Iveco, Caterpillar, MTU, MAN and alternator. Stocking of Automatic Voltage Regulators (AVR) like SX460, SX440, MX341 and MX321 for immediate delivery is our commitment to provide you with the service. In order to deliver orders fast and direct, we keep more in stock to guarantee a continuous operation of generators in the growing energy market.
Models of AVR (Automatic Voltage Regulator)
SX460 Series AVR
The ATV regulates the output voltage of the generator by varying its excitation current. With the self-excited systems, the main stator provides power via the automatic voltage regulator to the exciter stator. Its high-efficiency semiconductors ensure positive build up from initial low levels of residual voltage. The exciter rotor output is fed to the main rotor by a three phase full wave bridge rectifier, which is protected by a surge suppressor against surges.
SX440 Series AVR
ATV controls the output reactive power of the generator by controlling its excitation current. The efficient semiconductors of the AVR ensure positive build up from initial low levels of residual voltage. A three phase full wave bridge rectifier, which is protected by a surge suppressor against surges, conveys the exciter rotor output to the main rotor. The SX440 AVR can support a wide range of electronic accessories, including a 'droop' Current Transformer (CT) to permit parallel operation with other AC generators.
MX341 Series AVR
This AVR is used in conjunction with the DINGOL permanent magnet generator (PMG) system. Being fitted as standard on marine generators, it is also optional on industrial generators. It forms part of the excitation system for a brushless generator. In addition to regulating the generator voltage, the AVR has in-built protection against sustained over-excitation caused by internal or external faults. This de-excites the machine after a minimum 5 seconds. Voltage regulation of +/-1.0% is provided by this two phase average voltage sensed MX341.
MX321 Series AVR
MX321 series is the most sophisticated AVR of our company, which combines all the features of the MX341. What’s more, three phase rms sensing is available to improve its performance. The built-in over voltage protection ensures the reliable control of the generator. Short circuit current level adjustment is optional. If three phase sensing is required with the PMG system, the MX321 AVR must be used.
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