DENYO SERIES AVR NTA-4A-2SA Automatic Voltage Regulator for Diesel Generator
$267.00
This DENYO SERIES AVR NTA-4A-2SA is a high-quality aftermarket replacement for the original DENYO voltage regulator.
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The DENYO SERIES AVR NTA-4A-2SA is a professional-grade Automatic Voltage Regulator specifically engineered for DENYO diesel generators. This advanced regulator forms part of the excitation system for brushless generators, ensuring stable and reliable voltage output under varying load conditions.
This AVR model employs sophisticated phase-controlled thyristor technology to maintain precise voltage regulation. The circuitry includes comprehensive protection features such as under-speed and sensing loss protection to ensure safe, reliable control of your generator. The compact design utilizes surface mount technology (SMT) for high integration of features in a minimal footprint.
Positive voltage build-up from residual levels is ensured through high-performance semiconductors. The control and voltage sensing circuits have separate terminals, allowing flexible excitation power sourcing to meet various application requirements. This regulator is linked with the main stator windings and the exciter field windings to offer closed loop control of the output voltage.
Compatible Models: DENYO DLW series, DCW series, TLW series generators.
SPECIFICATION INSTALLATION AND ADJUSTMENTS
NTA-4A-2SA Product Specification Download.pdf
Download the complete specification sheet for detailed installation instructions, adjustment procedures, and technical parameters.
Details
Technical Specifications
| Parameter | Specification |
|---|---|
| Sensing Input | Voltage selectable 190-264 Vac single phase |
| Frequency | 50-60 Hz nominal |
| Power Input | 170-265 V ac single phase |
| Output | Continuous 4A @ 95V DC maximum |
| Voltage Regulation | ≤0.5% (typical) |
| External Voltage Adjustment | ±8% with 1K ohm 1/2W potentiometer |
| Under Frequency Protection | Built-in protection circuit |
| Operating Temperature | -40℃ to +70℃ |
| Power Dissipation | 12 watts maximum |
| Generator Field Resistance | ≥5Ω |
| Voltage Adjustment Range | ≥15% |
| Minimum Remanent Excitation Voltage | ≥5V/30HZ |
Core Functions & Protection
- Voltage Setting & Stability Adjustment
- F/V Characteristic Setting (Frequency/Voltage optimization)
- Low Frequency & Under-voltage Protection
- Excitation Current Limiting and Over-voltage Protection
- Parallel Droop Adjustment for multi-generator operation
- Thermal Protection for extended operation
Package Includes
1 x DENYO SERIES AVR NTA-4A-2SA Automatic Voltage Regulator, installation guide, and warranty documentation.
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