Accunergi MT-RM Series 3-Phase In-Row Modular UPS System

The Accunergi MT-RM Series 3-Phase In-Row Modular UPS is a high-power 3-in / 3-out modular UPS system engineered for large-scale critical environments requiring scalability, reliability, and continuous operation. Designed with a plug-in rack-mount architecture, the system supports N+X parallel redundancy and full digital control with dual DSP chips, ensuring stable and efficient power delivery for mission-critical applications.

This modular UPS solution is purpose-built for large data centers and telecommunications hubs, offering a flexible capacity design that grows with operational demand. Its hot-swappable modules allow system expansion or maintenance without downtime, ensuring uninterrupted power availability.

System Architecture & Scalability

• Modular Power Modules: Available in 20kVA, 25kVA, 30kVA, and 50kVA capacities

• Flexible Expansion:

  • 20–30kVA modules scalable from 20kVA up to 150kVA

  • 50kVA modules scalable from 50kVA up to 200kVA

• High Power Density: Supports up to 10 modules in parallel with a maximum output of 300kW

• Hot-Swappable Design: Online module insertion and removal with zero maintenance downtime

Key Performance Indicators

The MT-RM Series delivers high electrical performance while maintaining energy efficiency and system stability.

• AC-AC Efficiency: Up to 96%

• Input Power Factor: ≥ 0.99

• Low Harmonic Distortion: THDi ≤ 3%

• High Reliability: MTBF exceeding 250,000 hours

• System Availability: Up to 99.999% with redundant modules

• Unbalanced Load Capability: Supports 100% unbalanced loads with balanced three-phase input current

Advanced Battery & Protection Functions

To maximise battery lifespan and system safety, the MT-RM Series integrates intelligent control and comprehensive protection features.

• Three-Stage Intelligent Charging: Constant current, constant voltage, and float charging

• Battery Flexibility: Supports external battery configurations from 30 to 50 sections

• Adjustable Charging Current for different battery requirements

• Comprehensive Protection:

  • Emergency shutdown (EPO / REPO)

  • Short-circuit protection

  • Over-temperature protection

  • Bypass backflow protection

Monitoring, Communication & Physical Configuration

The system includes an LCD interface for redundancy configuration and real-time system status monitoring. Communication options support seamless integration with facility management systems.

• Monitoring & Communication:

  • LCD display

  • SNMP, RS485, and dry contact support

• Physical Configuration:

  • Frame sizes ranging from 8U to 17U (depending on module type and quantity)

  • Centralised Control Unit (ECU)

  • Dedicated bypass module for enhanced power supply capacity