Modular. 97% Efficient. Hot-Swap Modules. 20–500 kVA.
The Eaton 93PM is a modular 3-phase online UPS delivering 20 to 500 kVA for data centres and critical facilities — with 97% double-conversion efficiency, 99% Energy Saver System mode, hot-swappable 50kW power modules, and parallel redundancy up to 4 units.
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The 93PM uses swappable 50kW power modules that can be inserted or removed while the UPS is operational — enabling N+1 module-level redundancy within a single frame. If a power module develops a fault, it can be replaced during normal operation without any interruption to the connected load. This enables true zero-downtime maintenance.
In online double-conversion mode the 93PM achieves 97% efficiency. Energy Saver System (ESS) mode increases this to 99% — the load is transferred to a conditioned bypass path while the inverter remains in synchronised standby, transferring back to double-conversion in <2ms if a disturbance is detected. ESS is configurable per installation based on power quality requirements.
The 93PM's colour touchscreen LCD provides intuitive graphical access to UPS status, module status, battery health, alarms, event log, and energy consumption data. The display can show power chain efficiency reports and battery runtime estimates — useful for both operational monitoring and sustainability reporting.
Multiple 93PM frames can be connected in parallel for N+1 or 2N system-level redundancy — up to 4 units forming a single logical UPS. Combined with module-level redundancy within each frame, the 93PM can provide two independent levels of redundancy — module N+1 within each frame, and frame N+1 across the parallel system.
The 93PM includes Modbus TCP/IP and SNMP as standard, integrating with Eaton Intelligent Power Manager and third-party DCIM platforms. IPM provides full power chain visibility across Eaton UPS and PDU infrastructure, with capacity planning, fault prediction, and automated shutdown integration.
99% ESS efficiency and precise power consumption measurement from the 93PM's metering system enable data centre operators to accurately report PUE and Scope 2 carbon emissions. The 93PM is designed for compliance with EU Energy Efficiency Directive requirements for data centre UPS systems.
The Eaton 93PM is a modular 3-phase online UPS designed for medium to large data centres requiring 20 to 500 kVA of critical power protection. Its defining characteristic is the modular power architecture — 50kW hot-swap modules can be added to increase capacity or replaced for maintenance while the UPS remains operational. This eliminates both the over-provisioning required by fixed-capacity UPS systems and the maintenance downtime associated with non-modular designs.
At 97% efficiency in online mode and 99% in ESS mode, the 93PM is among the most efficient 3-phase UPS systems available. In a 200kW UPS installation, the difference between 94% and 97% efficiency represents approximately 6.4kW of continuous power savings — over £7,000 per year at UK electricity rates, and a corresponding reduction in cooling load. The ESS mode pushes this further, effectively reducing double-conversion losses while maintaining full protection capability.
The 93PM's dual redundancy architecture — module N+1 within each frame and unit N+1 across parallel frames — provides data centres with an exceptionally resilient power infrastructure. This is particularly relevant for colocation and financial data centres targeting Uptime Institute Tier III or Tier IV compliance, where concurrent maintainability and fault tolerance are mandatory requirements.
93PM's modular architecture and dual-level redundancy enable Tier III and Tier IV compliant UPS infrastructure — concurrent maintainability and fault tolerance at both module and frame level.
Online double-conversion with zero transfer time and 2N parallel redundancy provides the availability and power quality required by trading floors, clearing systems, and mission-critical financial applications.
99% ESS efficiency and precision power metering support PUE improvement programmes, EU Energy Efficiency Directive compliance, and Scope 2 carbon reporting for data centre operators.
Modular 50kW increments allow data centres to right-size UPS capacity at deployment and add modules as IT load grows — without UPS replacement or downtime for the existing load.
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