AVR TT09-4 Automatic Voltage Regulator Single Phase for 5KW Generator

AVR 5KWThree Phase Automatic Voltage Regulator Gasoline and Diesel Generator driven by 173F 177F 182F 188F 190F engine, Capacitor size

Key Features & Adjustments

• Voltage Adjustment (VOLT): Fine-tune your generator's output voltage to match setup requirements.

 

• Stability Adjustment (STAB): Customize system transient response for optimal stability under changing load conditions.

 

• Under-Frequency Roll-off (U/F): Integrated under-frequency protection to safeguard the alternator during engine speed drops.

 

• Durable Encapsulated Design: Fully potted housing protects internal components against humidity, vibration, and environmental contaminants.

 

• Built-in Protection: Features an internal fuse holder to protect against over-current conditions.

  Applications Compatible with various Marathon Electric generator models and standard brushless AC generators requiring a 190–240 Vac input reg Key Features & Adjustments

• Voltage Adjustment (VOLT): Fine-tune your generator's output voltage to match setup requirements.

 

• Stability Adjustment (STAB): Customize system transient response for optimal stability under changing load conditions.

 

• Under-Frequency Roll-off (U/F): Integrated under-frequency protection to safeguard the alternator during engine speed drops.

 

• Durable Encapsulated Design: Fully potted housing protects internal components against humidity, vibration, and environmental contaminants.

 

• Built-in Protection: Features an internal fuse holder to protect against over-current conditions.

  Applications Compatible with various Marathon Electric generator models and standard brushless AC generators requiring a 190–240 Vac input regulation.    

Key Features

• Precise Voltage Regulation – Maintains consistent generator output voltage.

• Micro-Controller Numeric Regulation – Improves accuracy and system performance.

• Transistor Controlled Power Circuit – Ensures reliable excitation control.

• Simple Installation & Adjustment – User-friendly setup and configuration.

• High Reliability – Designed for continuous generator operation.

• Standalone Operation Mode – Suitable for independent alternator systems.

• Compact & Durable Design – Built for long service life.

Technical Specifications

Feature	Specification
Voltage Regulation	± 0.5%
Nominal Excitation Current	6A
Maximum Excitation Current	10A (for 10 seconds)
Supply Range	150V (50Hz / 60Hz)
Voltage Detection	≤ 530V
Protection	10A Fast-acting Fuse
U/F Modes	U/F (LAM: OFF), Mode 1, and Mode 2 (Auto-adapting)

The MX321 features several trimmers (potentiometers) to fine-tune the generator's behavior:

• VOLTS: Adjusts the main generator output voltage.

• STABILITY: Prevents "hunting" or voltage fluctuations by adjusting the damping effect.

• UFRO (Under-Frequency Roll Off): Sets the "knee point" where the voltage begins to drop if the engine slows down, protecting the exciter.

• DROOP: Used for parallel operation to ensure the generator shares the reactive load correctly.

• I LIMIT: Sets the maximum stator current limit (if using a Current Transformer).

• OVER V / EXC: Sets the trip levels for over-voltage and over-excitation protection to prevent damage to the generator.

• RAMP: Adjusts the "soft start" time for the voltage to build up upon startup.