EVI 20000VA / 18000W Tower Online 3 Phase UPS (EP-UPS20000Y33OT)

The EVI 20000VA / 18000W Tower Online 3 Phase UPS (EP-UPS20000Y33OT) is an industrial-scale, double-conversion power protection system designed for the most demanding mission-critical infrastructure. Featuring true online technology with advanced DSP control, this high-capacity UPS delivers pure sine wave, three-phase output with zero transfer time, ensuring absolute power continuity for large data centers, manufacturing plants, healthcare campuses, and telecom hubs. With robust features like N+X parallel redundancy for up to four units, an ultra-wide input voltage range, and comprehensive digital management via a 7-inch touch LCD, this system provides unmatched reliability, scalability, and control for protecting high-power three-phase loads against all grid disturbances.

Product Features

Industrial Three-Phase Double Conversion

This UPS utilizes true online double-conversion topology with full digital control, continuously converting incoming three-phase AC to DC and back to a perfectly regulated, clean AC sine wave. This process provides complete electrical isolation, ensuring connected equipment is protected from surges, sags, harmonics, and frequency instability with zero transfer time to battery.

High-Capacity 20kVA / 18kW Power Output

With a substantial 20000VA / 18000W capacity and a high 0.9 output power factor, this system delivers a full 18kW of usable real power. It is engineered to support the most demanding three-phase loads, including large server clusters, industrial machinery, medical imaging systems, and extensive network infrastructure.

N+X Parallel Redundancy for Maximum Reliability

The system supports parallel operation of up to four identical units in an N+X configuration. This allows for capacity expansion and, critically, provides built-in redundancy. In the event of a single unit failure, the remaining units seamlessly assume the full load, eliminating any single point of failure and guaranteeing uninterrupted power for critical operations.

Ultra-Wide Input Voltage and Frequency Range

Built for extreme grid conditions and seamless generator compatibility, the UPS accepts a wide three-phase input voltage range from 208V to 478V AC. Its exceptionally broad frequency window of 40-70 Hz ensures stable operation with highly unstable mains or various backup generator sets, offering unparalleled adaptability.

Advanced Digital Control and PFC Technology

Fully digital control of the charger, rectifier, and inverter ensures precise and efficient operation. Integrated Power Factor Correction (PFC) technology maintains a near-unity input power factor and keeps input current harmonic distortion below 3%, reducing stress on the upstream electrical infrastructure and improving overall energy efficiency.

Comprehensive Management and Communication

A large 7-inch color touch LCD display provides an intuitive interface for real-time monitoring, configuration, and system control. Standard communication ports include USB, RS232, RS485, a parallel port, and dry contacts, with optional SNMP and relay cards for complete integration into network and building management systems.

Scalable Runtime and Operational Flexibility

The unit includes an internal battery bank for baseline runtime and supports connection to optional external battery packs for extended backup durations to meet specific operational requirements. Features like DC start (cold start), an ECO function for efficiency, an Emergency Power Off (EPO) function, and intelligent charging management provide maximum operational control and safety.

Product Specifications

Model: EP-UPS20000Y33OT
Topology: Online Double-Conversion with DSP Control
Capacity: 20000VA / 18000W
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