Mercury 20kVA / 20kW 3-Phase Online UPS (MDC3320S)

This Mercury 20kVA/20kW 3-Phase Online UPS MDC3320S is an enterprise-grade, true online double-conversion UPS engineered to deliver clean, stable, and uninterrupted power for mission-critical applications. Featuring a unity power factor (PF 1.0), zero transfer time, and three-phase input/output, this UPS is ideal for data centers, industrial systems, healthcare facilities, and large commercial environments requiring maximum reliability and performance.

With advanced battery management, scalable parallel redundancy, and comprehensive communication options, the Mercury MDC3320S ensures continuous operation even in the most unstable power conditions.

Key Features & Benefits

• True Online Double-Conversion Technology: Provides complete electrical isolation from power disturbances, delivering consistent pure sine wave output with zero transfer time during outages.
• High Power Density (PF 1.0): Delivers full 20kVA / 20kW usable power without derating, making it perfectly suited for modern IT and industrial loads.
• 3-Phase Input / 3-Phase Output (3/3): Ensures balanced power distribution and high efficiency for enterprise environments.
• Scalable Parallel Redundancy: Supports N+X parallel operation (up to 4 units) for increased capacity, redundancy, and fault tolerance.
• Advanced Battery Management: Intelligent battery control optimizes charging, extends battery lifespan, and provides early warning alerts for maintenance and replacement.
• Generator Compatible: Designed to operate reliably with generators, even under unstable frequency and waveform conditions.
• Comprehensive Monitoring & Control: Features a user-friendly LCD display and multiple communication ports for local and remote management.
• High Efficiency Design: Optimized for reduced energy loss, lower operational costs, and improved overall system performance.

Technical Specifications

• Model: Mercury MDC3320S
• UPS Type: True Online Double-Conversion
• Power Capacity: 20 kVA / 20 kW
• Power Factor: 1.0 (Unity PF)
• Phase Configuration: 3-Phase Input / 3-Phase Output (3/3)
• Input Voltage: 400V AC ±10% (Wide range: 208–478V AC supported)
• Output Voltage: 400V AC ±1% (3-Phase)
• Waveform Type: Pure Sine Wave
• Transfer Time: Zero (0 ms)
• Battery System: ±120V DC (External battery system – 2 sets of 20 × 9Ah / 12V sealed lead-acid batteries)
• Recharge Time: 6–8 hours to 90% capacity
• Communication Interfaces: USB, RS-232, RS-485, Parallel Port, Intelligent Slot
• Optional Accessories: SNMP Card, Relay Card
• Display: LCD panel with real-time status, alarms, and diagnostics
• Protection Features:
  • Short-circuit protection
  • Overload and over-temperature protection
  • Battery overcharge / over-discharge protection
  • Output low-voltage protection
  • Fan fault and system alarms

Applications

• Data Centers & Server Rooms: Reliable power for servers, storage, and networking equipment
• Industrial & Manufacturing Systems: Protects automation, control systems, and production equipment
• Healthcare Facilities: Ensures uninterrupted power for medical devices and critical systems
• Commercial & Enterprise Infrastructure: Ideal for banks, telecoms, and mission-critical business operations
• Generator-Backed Power Systems: Seamless integration with standby generators