Generator AVR Automatic Voltage Regulator AVR NTA-4A-2TC

• Three-phase AC input, voltage range: 180–500 VAC.
• Supports self-excitation start-up (residual voltage ≥ 6 VAC/30Hz triggers start-up).
• Compatible with 50Hz/60Hz systems (automatically adaptive without manual switching).

• DC excitation output: Continuous current up to 4 A; instantaneous peak current 10 A (≤ 8 seconds).
• Output voltage range: 50–140 VDC (dynamically adjusts with generator speed/load).

• Steady-state voltage regulation: ≤ ±0.8% RMS.
• Dynamic response: Recovery time ≤ 400 ms (when voltage drops to 90% of rated value).

• Built-in over-excitation protection.
• Built-in short-circuit current limitation.
• Built-in under-voltage/over-voltage protection.
• Built-in overtemperature protection.

• Epoxy resin potting, protection class IP20 (dust and moisture resistant).
• Operating temperature range: -30℃ to +70℃.