Basler KR4F Voltage Regulator (9042600100)

The Basler KR4F (part number 9042600100) is a solid‑state voltage regulator designed for synchronous generators in industrial and commercial power applications. This regulator provides precise automatic voltage regulation (AVR) to maintain stable generator output voltage under varying load conditions, ensuring reliable power quality for sensitive equipment.

The KR4F features a robust design with high‑quality components, offering protection against over‑excitation and voltage surges. It includes adjustable settings for voltage setpoint and stability, allowing easy tuning to match specific generator characteristics. The regulator is built for panel mounting and operates over a wide temperature range, making it suitable for harsh environments.

Technical Specifications

• Model: KR4F (9042600100)

• Control mode: AVR (automatic voltage regulation)

• Voltage sensing: 120/240 V AC (single‑phase or 3‑phase)

• Field output: Up to 5 A continuous

• Regulation accuracy: ±0.5% of setpoint

• Protection: Over‑excitation, V/Hz, loss of sensing

• Adjustments: Voltage setpoint, gain, damping

• Power supply: Self‑excited from generator sensing

• LED indicators: Power, excitation, fault

• Operating temperature: -40°C to +70°C

• Certifications: CE, UL, RoHS

Functional Features

• Precise regulation: Maintains output voltage within tight tolerances.

• Fast response: Quickly compensates for load changes.

• Protection: Over‑excitation and V/Hz limiting safeguard the generator.

• Easy installation: Screw terminals for simple wiring.

• Durable construction: Designed for long‑term reliability in industrial settings.

Typical Applications

• Diesel and gas gensets: Voltage regulation for standby and prime power.

• Marine generators: Reliable control for shipboard systems.

• Industrial generators: Power quality improvement for manufacturing plants.

Installation and Configuration

Mount the KR4F on a panel using the provided brackets. Connect the voltage sensing wires to the generator output, the excitation leads to the exciter field, and the power supply (if separate). Adjust the voltage setpoint and stability controls using the front‑panel potentiometers. The LED indicators provide status feedback.

Compliance

Complies with IEEE 421.5 and EMC standards, CE and UL approved, RoHS compliant.

Conclusion

The Basler KR4F offers reliable, cost‑effective voltage regulation for generators, ensuring stable power output and protection against abnormal conditions.