EVI 40000VA / 36000W Tower Online 3 Phase UPS (EP-UPS40Y33OT)
The EVI 40000VA / 36000W Tower Online 3 Phase UPS (EP-UPS40Y33OT) represents the pinnacle of industrial power protection, engineered for large-scale, mission-critical facilities requiring absolute power continuity. This high-capacity, true online double-conversion system delivers 40kVA of clean, regulated three-phase power with zero transfer time, ensuring complete isolation from all grid anomalies. Featuring robust N+X parallel redundancy for up to four units, an ultra-wide input range for generator compatibility, and advanced digital control via a 7-inch touch LCD, this UPS is the definitive solution for mega data centers, heavy industrial manufacturing, major healthcare complexes, and expansive telecommunications infrastructure where 36kW of reliable power is non-negotiable.
Product Features
Enterprise-Grade Three-Phase Double Conversion
At its core, this UPS employs true online double-conversion technology with advanced Digital Signal Processor (DSP) control. It continuously converts incoming three-phase AC power to DC and back to a pristine, regulated AC sine wave, providing zero transfer time and complete protection against surges, sags, harmonics, and frequency fluctuations for the most sensitive high-power loads.
Massive 40kVA / 36kW Power Capacity
With an impressive 40000VA / 36000W capacity and a high 0.9 output power factor, this system delivers a full 36kW of usable real power. It is designed to support extensive server farms, large industrial machinery, full-floor IT loads, and other energy-intensive three-phase critical infrastructure without compromise.
Scalable N+X Parallel Redundancy
The system supports parallel operation of up to four units in an N+X configuration. This architecture allows for massive capacity scaling and, most importantly, provides built-in fault tolerance. The redundant design ensures that the failure of any single unit does not impact the critical load, guaranteeing maximum system availability and uptime.
Ultra-Wide Input Voltage and Frequency Tolerance
Engineered for the most unstable grid environments and seamless integration with backup generators, the UPS accepts an extensive three-phase input voltage range from 208V to 478V AC. Its exceptionally broad frequency window of 40-70 Hz ensures reliable operation under virtually any power source condition, providing unparalleled resilience.
Advanced PFC and High-Efficiency Operation
Integrated Power Factor Correction (PFC) technology maintains a near-unity input power factor and limits input current harmonic distortion to below 3%. This reduces stress on the facility’s electrical infrastructure, minimizes energy waste, and ensures cleaner operation. An ECO function further optimizes efficiency during periods of stable grid power.
Comprehensive Digital Management Interface
A large, intuitive 7-inch color touch LCD display serves as the primary interface for real-time monitoring, detailed system diagnostics, and configuration. It provides instant visibility into all operational parameters, status alerts, and battery health, enabling proactive management.
Extensive Connectivity for Integration
Standard communication ports include USB, RS232, RS485, a parallel port, and dry contacts for flexible integration with a wide range of monitoring and control systems. Optional SNMP and relay cards enable seamless connectivity to network management platforms and Building Management Systems (BMS) for centralized, remote oversight.
Operational Flexibility and Safety
Key operational features include DC start (cold start) capability for testing and emergency power-up without mains, intelligent battery charging management for longevity, and an Emergency Power Off (EPO) function for safety. The system supports connection to optional external battery cabinets to extend runtime from minutes to hours as required.
Product Specifications
Model: EP-UPS40Y33OT
Topology: Online Double-Conversion with DSP Control
Capacity: 40000VA / 36000W
Output Power Factor: 0.9
Input/Output Phases: 3-Phase Input / 3-Phase Output
Input Voltage Range: 208 – 478 VAC
Input Frequency Range: 40 – 70 Hz
Input Current Harmonic Distortion: < 3%
Output Voltage: 380/400/415 VAC (Configurable)
Output Waveform: Pure Sine Wave
Output Transfer Time: 0ms
Parallel Redundancy: N+X, supports up to 4 units
Efficiency ECO Mode: Yes
Battery: Internal Sealed Lead-Acid Bank
Runtime Expansion: Supports Optional External Battery Packs
DC Start (Cold Start): Yes
Display: 7-inch Touch LCD
Communication Ports: USB, RS232, RS485, Parallel Port, Dry Contact
Optional Cards: SNMP Card, Relay Card
Safety Function: Emergency Power Off (EPO)
Connection: Input/Output Terminal Blocks
Warranty: 2 Years on UPS, 1 Year on Battery


