The SBW-250 KVA three-phase high-precision automatic voltage regulator features a contact autotransformer, servo motor, and an advanced automatic control circuit. When grid voltage fluctuates or load conditions change, the automatic sampling control circuit signals the servo motor to adjust the carbon brush position on the autotransformer, ensuring a stable and reliable output voltage.
The SBW series high-precision three-phase AC-regulated power supply is designed for stable and reliable voltage regulation. It utilizes an advanced phase-by-phase adjustment system to maintain consistent voltage for each phase. The system operates with a three-phase, four-wire input in a star (Y) connection, with an output configurable as either a three-phase four-wire or three-phase three-wire system. Additionally, three current meters display the output current for each phase, while a converter switch and voltmeter enable precise phase output line voltage monitoring.
Special Features
- High-Precision Voltage Regulation – Ensures stable and consistent output voltage, protecting sensitive equipment.
- Wide Input Voltage Range – Effectively compensates for fluctuations in the power supply.
- Servo Motor Control System – Provides accurate and responsive voltage adjustments.
- Heavy-Duty Autotransformer – Built for durability and high-efficiency performance.
- Overload and Short-Circuit Protection – Enhances safety and prevents damage.
- Phase-by-Phase Independent Regulation – Ensures balanced voltage for each phase.
- High Load Capacity – Handles up to 250 KVA, ideal for industrial and commercial applications.
- Display Panel – Provides real-time voltage, current, and operational status monitoring.
- Low Energy Consumption – Designed for efficiency and minimal power loss.
- Reliable and Durable Design – Built with high-quality materials for long-term operation
Specification of SBW-250 KVA AVR
- Input Voltage: 280-460V AC
- Output Voltage: 380V / 400V ±1-3% (Adjustable)
- Output Precision: ±3% (Adjustable)
- Frequency: 50 Hz
- Control Type: Servo Type
- Operating Temperature: -10℃ ~ +40℃
- Storage Temperature: -15℃ ~ +45℃
- Over/Low Voltage Protection: Yes
- Circuit Protection: Yes
- Display: Shows input and output voltage
- Efficiency: >95%
- Voltage Regulation Accuracy: ±3%
- Overvoltage Protection Value: Output voltage 430V ±4V
- Load Power Factor:8
- Adjustment Time: Voltage change of 10% adjusts in <1s
- Temperature Rise: <60℃
