Basler Electric SR4A1B10B3E Static Voltage Regulator (840 VA)
The Basler Electric SR4A1B10B3E is a static voltage regulator from the SR4A series, offering an output capacity of 840 VA. It is designed for brushless synchronous generators requiring moderate excitation power. The regulator employs SCR firing control to maintain stable generator voltage under varying load and speed conditions. Its compact design and flexible configuration make it suitable for a wide range of industrial, commercial, and marine generator sets.
Key Features
Output capacity of 840 VA for continuous duty
Voltage regulation accuracy within ±0.5 percent
Adjustable voltage setpoint and stability compensation
Built-in volts per hertz and underfrequency protection
Soft start and field flashing for reliable startup
LED indicators for power and fault status
External trim input for remote voltage control
Compliance with major marine and industrial standards
Technical Specifications
The regulator operates on 120 or 240 VAC, 50/60 Hz. Sensing input is 80 to 300 VAC. The output voltage is adjustable to match generator field requirements. The unit has a transient response time of less than 20 milliseconds. Operating temperature range is -30 to +65 degrees Celsius. The enclosure is designed for panel mounting and meets IP20 protection.
Protection Functions
Overexcitation limiting prevents rotor thermal damage. Underfrequency compensation adjusts the voltage setpoint linearly with frequency to maintain V/Hz ratio. Loss-of-sensing protection reduces field output if the sensing circuit fails, preventing overvoltage. The regulator also includes a manual control mode for commissioning.
Installation and Adjustment
Mount the regulator on a flat panel and connect power, sensing, and field wiring. Use the potentiometers to set voltage, stability, and compensation. The unit is factory-calibrated but may require final adjustment on site. A test point is provided for monitoring field voltage during setup.
Applications
Ideal for diesel and gas generator sets in standby or prime power applications. Also used in marine auxiliary generators, mobile power units, and renewable energy systems where reliable voltage control is needed.
Compliance and Quality
The SR4A1B10B3E is manufactured under strict quality control and meets CE, UL, and CSA certifications. It has been tested for vibration, humidity, and temperature extremes per IEC 60068.
Conclusion
Basler Electric SR4A1B10B3E static voltage regulator offers a reliable and cost-effective solution for generator excitation with 840 VA capacity. Its robust design, protection features, and ease of use make it a trusted choice for generator OEMs and end users.
