PureWave® UPS XT System

2.25 – 22.5 MW (2.5 – 25 MVA) · 5 – 25 kV

Containerized medium-voltage UPS lineup installed on a customer site

The extended-range medium-voltage platform, protecting up to 22.5 MW at voltages to 25 kV. Full lifecycle support, spares and field service available from RE&D.

Rated 2.25 MW to 22.5 MW (2.5 MVA to 25 MVA) at 5 kV to 25 kV
Transfers the load from utility to the UPS in typically 1/4 cycle on a disturbance
Extended-runtime design in outdoor containers with batteries, IGBT inverters and dc-dc converters
Power electronic switch uses series SCRs in an N+1 configuration
Fire suppression (FP-40S) included and batteries integrated with dc load-break disconnect
HMI control and monitoring on a master control rack, with SCADA control selectable

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Overview

The PureWave UPS XT System is a three-phase, solid state, extended-runtime uninterruptible power supply that works alongside the existing building electrical system to provide backup power protection. It is a modular offline system suited to outdoor container installation.

Each container can hold two IGBT inverter modules, two dc-dc converter modules (choppers) and batteries, with the isolation transformer and medium-voltage switchgear external to the container. On a utility disturbance the power electronic switch opens and the system takes 100% of the load, typically within 1/4 cycle.

Rated power: 2.25 MW – 22.5 MW

Specifications

Ratings

Power rating: 2.25 MW - 22.5 MW (2.5 MVA - 25 MVA)
System voltage: 5 kV - 25 kV
PCS ac output: 480 Vac, wye three-wire, connected to the utility through a separate isolation transformer
Inverter sections per PCS: Two 1.125-MW inverter sections
Inverter dc inputs: Two 562.5-kW dc inputs per 1.125-MW inverter
Maximum battery dc voltage: 786 Vdc

Performance

Topology: Three-phase, solid state, extended-runtime UPS; modular offline system
Transfer time: Typically 1/4 cycle (power electronic switch, approximately 1/4 cycle)
Power electronic switch: Medium-voltage back-to-back SCR modules, series SCRs in an N+1 configuration
Operating states: Five: Ready, Run, Inhibit, Bypass, Bypass Isolate

Battery / Energy

Energy storage: Batteries housed in the container battery room, with dc-dc converters (choppers) to the inverters
Battery disconnect: Batteries in each rack integrated with a dc load-break disconnect
Fire suppression: FP-40S included

Physical

Installation: Outdoor container housing PCS and batteries
Per container: Two IGBT inverter modules, two dc-dc converter modules (choppers) and batteries
External to container: Isolation transformer (per container, dry-type, three-phase) and medium-voltage switchgear
PCS enclosure: Two dc bays, two inverter bays, one center ac section

Control & communications

Control interface: HMI computer on master control rack; password protected
Control source: Switchable between SCADA and HMI
Manual controls: Command Bypass Isolate key-lock, Command Bypass, Controlled By, Reset
Switchgear: Source, bypass, input, output, load and PCS circuit breakers; load bank test switch