Eaton PW9155 8 kVA UPS with 32 Battery Modules (3-High, Transfer Module)

The Eaton PW9155 is a premium online UPS designed to protect critical IT, healthcare, banking, and industrial infrastructure. Engineered for mission‑critical applications, it delivers reliable, double‑conversion power with scalable battery runtimes in a compact, space‑efficient footprint. The PW9155 combines a robust 8 kVA capacity with a modular, three‑high design and includes a Transfer Module to support flexible deployment in data centers, network closets, and demanding environments where uptime matters most.

• Premium online power protection: The PW9155 employs double‑conversion online topology to continuously regulate voltage and frequency, delivering clean, isolated power to sensitive equipment and protecting against outages, sags, transients, and harmonic distortion that can compromise performance and data integrity.
• Compact, scalable runtime: Engineered to maximize battery runtime without expanding floor space, this unit packs 32 battery modules into a compact form factor. Organizations can scale runtime to meet evolving load profiles, lower the risk of unexpected outages, and maintain service level agreements with confidence.
• Modular three‑high architecture with Transfer Module: The 3‑high modular stack enables hot‑swappable batteries and modules for simplified maintenance and reduced downtime. The integrated Transfer Module allows flexible network topology and enhanced control over power protection, enabling seamless integration into diverse IT environments.
• Advanced management and monitoring: Built‑in networking options (USB, RS‑232, Ethernet) plus SNMP and web management give operators real‑time visibility, automated shutdown capabilities, and easy integration with DCIM tools and centralized monitoring platforms for proactive power protection.
• Versatile protection for diverse environments: The PW9155 is suitable for corporate data centers, healthcare facilities, financial institutions, and industrial automation. Its auto‑sense 50/60 Hz input, configurable output, and broad safety certifications ensure dependable operation across global deployments.

Technical Details of Eaton PW9155 8 kVA 32 Battery w/Trans. Mod. (3-high)

• Model: PW9155
• UPS Type: Online, double‑conversion protection for continuous power quality
• Rated Power: 8 kVA / 6–6.4 kW (load‑dependent, configuration‑dependent)
• Battery System: 32 x 12V battery modules providing extended runtime with hot‑swappable capability
• Architecture: Modular, three‑high design with hot‑swappable modules; Transfer Module included for flexible networking and protection options
• Input Voltage / Frequency: 208–240 VAC, 50/60 Hz auto‑sensing; three‑phase input common in enterprise deployments
• Output Voltage / Frequency: 208–240 VAC, 50/60 Hz auto‑sensing; precise voltage regulation to protect connected equipment
• Efficiency and Operation: Optimized to deliver high efficiency under typical loads with reliable standby performance; designed for continuous operation in data‑center environments
• Networking & Management: USB, RS‑232, Ethernet interfaces; SNMP support; optional SmartSlot offerings for additional management capabilities
• Protection & Monitoring Features: Automatic voltage regulation, surge suppression, intelligent monitoring, and shutdown integration with compatible software
• Dimensions & Weight: Dimensions and weight vary by configuration (battery count and modules); refer to the datasheet for exact figures
• Certifications: Industry safety and compliance marks (UL/CE/RoHS) applicable to global deployments

How to Install Eaton PW9155 8 kVA UPS

• Plan the installation area with ample ventilation and clearance for maintenance access, cable routing, and cooling. Ensure the rack or cabinet can support the weight of the PW9155 and its battery modules.
• Mount the UPS in a rack or on a stable floor stand designed to accommodate modular assemblies. Use appropriate mounting rails and hardware to secure the unit and minimize vibration.
• Configure the Transfer Module and network interfaces according to your environment. Install any optional management cards or SmartSlot modules as needed to enable remote monitoring and integration with your DCIM tools.
• Connect input power from the main distribution or appropriate power source, ensuring the electrical connection matches the unit’s three‑phase input requirements. Connect the protected loads to the UPS output outlets or bus, following manufacturer guidelines for cable sizing and separation from non‑critical circuits.
• Install and connect the battery modules. Allow a controlled charge period per the user manual, and verify all connections are secure. Power up the system, run the self‑test, and configure alarm thresholds, shutdown policies, and load priorities using the management interface.

Frequently asked questions

• What is the Eaton PW9155? It is an 8 kVA online UPS designed to protect critical IT and industrial loads with scalable battery runtime in a compact, modular 3‑high form factor, including a Transfer Module for flexible deployment.
• How many batteries does it use? The PW9155 uses 32 battery modules (12V each) to provide extended runtime; runtimes scale with load and configuration, allowing long maintenance windows during outages.
• Can I expand runtime without moving to a larger unit? Yes. The modular, hot‑swappable battery design enables runtime expansion by adding or reconfiguring battery modules while the system remains online, minimizing downtime during maintenance or growth.
• Is the PW9155 suitable for three‑phase deployments? Yes. It is designed for three‑phase input and output configurations common in data centers, healthcare facilities, and industrial environments, with auto‑sensing frequency and flexible voltage options.
• How do I monitor and manage the PW9155? The UPS includes USB, RS‑232, and Ethernet connections, plus SNMP and web management capabilities. These interfaces enable proactive monitoring, remote shutdowns, alerts, and integration with existing power management software.
• What maintenance or service is required? Regular battery health checks, self‑tests, and firmware/management card updates are recommended. With hot‑swappable modules, maintenance can be performed with minimal disruption to protected loads.
• What environments is the PW9155 best suited for? Corporate data centers, healthcare IT facilities, financial services, and industrial automation environments where uptime, reliability, and scalable protection are critical.