BR931 Series 15-20kVA
The BR931 Series is a high-performance true online double-conversion UPS designed to provide reliable and continuous power protection for critical business and industrial applications. Powered by advanced DSP technology and a robust IGBT rectifier and inverter architecture, it delivers superior efficiency, stable output, and exceptional load adaptability.
With a unity output power factor (PF = 1), the BR931 series ensures maximum usable power capacity for demanding IT infrastructure, data centers, office equipment, and sensitive electronic systems. Its active input power factor of ≥0.99 and wide input voltage tolerance help improve energy efficiency while maintaining stable operation under fluctuating power conditions.
Featuring advanced 3-level topology with efficiency up to 95%, intelligent battery management, and compatibility with both lead-acid and lithium-ion batteries, the BR931 series offers enhanced reliability, reduced operating costs, and flexible backup power solutions for modern critical environments.
Reliable Three-Phase Power Protection for Critical Business Applications
The RAPSTECH BR931 Series 15–20kVA Online UPS is a high-performance three-phase input, single-phase output online double conversion UPS designed to deliver continuous, clean, and stable power for mission-critical applications. Built with advanced DSP digital control and unity output power factor, it ensures maximum usable power while protecting sensitive equipment from power disturbances.
Featuring a wide input voltage range, intelligent battery management, and zero transfer time, the BR931 Series guarantees uninterrupted operation during utility fluctuations and power failures. High operating efficiency and low harmonic distortion improve overall system performance while reducing energy consumption and operating costs.
Ideal for server rooms, banking systems, healthcare facilities, commercial buildings, telecom infrastructure, educational institutions, laboratories, security systems, and enterprise IT environments, the BR931 Series delivers dependable power protection with exceptional reliability and ease of operation.
Key Features
- True Online Double Conversion – Provides uninterrupted premium-quality power with zero transfer time during utility disturbances.
- 3-Phase Input / 1-Phase Output – Optimized for commercial and enterprise applications requiring balanced power distribution.
- Unity Output Power Factor (PF = 1.0) – Delivers maximum usable output power where kVA equals kW.
- Advanced DSP Digital Control – Ensures precise voltage regulation, fast response, and reliable system operation.
- Wide Input Voltage Range – Maintains stable operation under fluctuating utility conditions while reducing battery usage.
- High Input Power Factor (≥0.99) – Minimizes utility loading and improves overall energy efficiency.
- High Operating Efficiency – Up to 95% efficiency in Online Mode and up to 98% in ECO Mode for lower operating costs.
- Intelligent Battery Management – Supports adjustable external battery configuration with optimized charging up to 12A.
- Excellent Output Quality – Low harmonic distortion and precise voltage regulation protect sensitive electronic equipment.
- User-Friendly LCD Interface – Displays UPS status, load percentage, battery condition, input/output parameters, alarms, and fault codes.
- Comprehensive Communication – Standard RS232, RS485, and EPO with optional SNMP, USB, AS400, and Parallel Kit.
- Designed for Continuous Operation – Built for demanding commercial and mission-critical environments requiring maximum uptime.
Technical Specifications
| Power Capacity | 15–20kVA / 15–20kW |
|---|---|
| UPS Technology | True Online Double Conversion |
| Input Configuration | 3 Phase Input / 1 Phase Output (5 Wire) |
| Input Voltage Range | 190–499VAC (L-L) |
| Input Power Factor | ≥0.99 |
| Input Frequency | 40–70Hz |
| Output Voltage | 220 / 230 / 240VAC |
| Output Power Factor | Unity (PF = 1.0) |
| Voltage Regulation | ±1% |
| Output THD | ≤1% (Linear Load), ≤3% (Non-Linear Load) |
| Transfer Time | 0ms (Utility to Battery & Inverter to Bypass) |
| Efficiency | Up to 95% Online, Up to 98% ECO Mode |
| Battery Support | External Batteries, Adjustable 16–24 Batteries |
| Maximum Charging Current | 12A |
| Display | LCD with Mimic Diagram, UPS Status, Load, Battery, Input/Output Parameters & Alarm Monitoring |
| Communication | RS232, RS485, EPO, Optional SNMP, USB, AS400 & Parallel Kit |
| Noise Level | <62dB (1 Meter) |
Comprehensive Support & Services
RAPSTECH provides complete lifecycle support to maximize the reliability and performance of the BR931 Series UPS. Our certified service engineers deliver professional installation, preventive maintenance, technical assistance, and remote monitoring support to ensure uninterrupted operation throughout the product's service life.
- ✔ Professional installation and commissioning services.
- ✔ Preventive Maintenance (AMC) programs.
- ✔ On-site diagnostics and technical support.
- ✔ Genuine spare parts and battery replacement assistance.
- ✔ Remote monitoring and SNMP configuration support.
- ✔ Product documentation, firmware updates, and technical guidance.
- ✔ Nationwide support from RAPSTECH certified service engineers.
⚡ Key Specifications
Core technical features at a glance
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