Basler Electric AEC63‑7 Analog Excitation Controller

The Basler Electric AEC63‑7 is an analog excitation controller designed for brushless or DC excited synchronous generators. It accepts a nominal input voltage of 220‑277 VAC at 50‑60 Hz, making it suitable for a wide range of industrial, marine, and utility generator applications. The controller provides automatic voltage regulation with adjustable gain and stability, ensuring stable generator output under varying load and speed conditions. Its simple, robust design makes it a reliable choice for continuous operation.

Control Features

The AEC63‑7 uses a proportional‑integral (PI) control circuit with front‑panel adjustments for voltage setpoint, stability (damping), and droop (0‑5%) for parallel operation. An under‑frequency roll‑off function reduces excitation when the frequency drops below a preset threshold to prevent over‑excitation. The controller also includes a built‑in voltage ramp for smooth voltage build‑up during starting. A remote voltage trim input allows external control for system integration.

Input and Output

Sensing input: 220‑277 VAC, single‑phase or three‑phase, 50‑60 Hz. The controller derives its internal power from the sensing input. Excitation output: up to 90 VDC at 6 A continuous, sufficient for medium‑sized exciters. Output is protected against short circuits and overcurrent. A field current monitor terminal is provided for external metering.

Technical Specifications

Voltage regulation accuracy: ±0.5%. Response time:<40 ms for 20% load change. Burden: <5 VA. Operating temperature: –25°C to +60°C. Enclosure: rugged metal or plastic, suitable for panel mounting. Dimensions: 120 mm x 80 mm x 40 mm (typical). Compliance with IEC 61000‑4‑2 for ESD.

Applications

This controller is used in generators for marine propulsion, auxiliary power units, wind turbines, and hydro plants. It is also suitable for ground power units and mobile generator sets. Its wide voltage and frequency range make it versatile for international installations.

Installation and Commissioning

Mount the controller in a clean, dry location. Connect sensing leads, field output, and optional droop CT. Commissioning involves setting the voltage setpoint, stability, and droop while performing load tests. The controller includes a test mode for excitation checkout.

Reliability and Quality

Basler Electric’s AEC63‑7 is built with high‑reliability components and conformal coating. It undergoes thermal and vibration testing to ensure performance in harsh environments. The controller is backed by Basler’s technical support and warranty.

Conclusion

The Basler Electric AEC63‑7 analog excitation controller offers precise, flexible, and reliable excitation control for a wide range of generator applications. Its 220‑277V, 50‑60Hz input and robust design make it a trusted choice for demanding power generation systems.