Powerware PW9155 15 kVA UPS with 64 Battery (3-high) — Premium Online Backup Power for Critical Infrastructures

The Eaton Powerware PW9155 is engineered to deliver premium online backup power with scalable battery runtimes for IT and electrical engineering infrastructure across corporate, healthcare, banking, and industrial environments. Designed to pack maximum battery runtime into a surprisingly small footprint, the PW9155 offers robust, uninterrupted power protection for servers, storage arrays, network gear, and essential equipment. This 15 kVA UPS combines advanced power conditioning with flexible battery configurations to safeguard uptime, improve reliability, and reduce operational risk in mission-critical applications. Whether you’re consolidating data center space, expanding a hospital’s IT backbone, or securing a factory’s automation systems, the PW9155 delivers consistent, clean, and reliable power when it matters most.

• High-density online protection in a compact footprint: The PW9155 provides premium online, double-conversion UPS protection that maintains precise voltage and frequency with minimal distortion. Its compact design makes it ideal for data centers, network closets, and electrical rooms where space is at a premium, without sacrificing the level of protection required for critical loads. This efficiency translates into lower thermal output and easier cooling management, helping you maximize floor space and reduce operating costs.
• Scalable battery runtime with a 64-battery bank (3-high): The 64-battery configuration supports extended runtimes tailored to your load profile, with modular, three-high battery stacks that simplify maintenance and future expansion. This scalable approach lets you align energy reserve with business continuity goals, whether you’re protecting a small cluster of servers or a larger chassis of virtualization hosts and storage systems. Battery modularity also means faster replacement and reduced maintenance windows, keeping your downtime to a minimum.
• Advanced power conditioning for critical loads: The PW9155 provides precise voltage regulation, fast transient response, and superior isolation from input disturbances. This means sensitive equipment operates in a stable environment even during utility swings, sags, or surges. Clean power reduces the risk of equipment wear, data errors, and unexpected shutdowns, extending the life of your servers and networking gear while protecting unsaved data during outages.
• Flexible deployment and management options: The unit is designed for easy integration into existing IT infrastructures, with management interfaces and remote monitoring capabilities. Whether you’re deploying in a standalone mode or integrating with DCIM and virtualization platforms, the PW9155 offers intuitive configuration and visibility to help IT staff anticipate issues, optimize runtimes, and automate responses to power events. This flexibility supports modern IT workflows, disaster recovery planning, and proactive capacity management.
• Reliability, support, and lifecycle you can trust: As a flagship Eaton solution, the PW9155 is built for reliability, with serviceable components, proven hardware architecture, and access to Eaton’s global support network. The modular design reduces total cost of ownership by simplifying maintenance, upgrades, and parts availability. For organizations aiming to minimize risk, the PW9155 provides dependable uptime and an anchor for business continuity strategies across multi-site deployments.

Technical Details of Powerware PW9155 15 kVA 64 Battery (3-high)

• Power rating: 15 kVA online UPS with scalable battery runtime (bank capacity: 64 batteries in a 3-high configuration).
• Topology: Online, double-conversion uninterrupted power supply with continuous power conditioning to deliver clean, stable output.
• Battery arrangement: 3-high modular battery packs enabling scalable runtime and simplified maintenance.
• Protection features: Input impedance management, surge suppression, voltage regulation, and independent phase control to preserve critical loads.
• Connectivity: Integrated management options for remote monitoring and control; compatibility with standard IT infrastructure monitoring tools.

Note: Specifications presented here reference the PW9155 model family. For exact figures, including efficiency, runtime curves, and permissible ambient conditions, consult official Eaton PW9155 documentation and your authorized distributor. Technical details may vary by SKU, regional version, and battery configuration.

How to install Powerware PW9155 15 kVA 64 Battery (3-high)

Installing the PW9155 involves careful planning, site preparation, and adherence to safety standards. Start by identifying a suitable location with adequate ventilation, unobstructed airflow, and access for maintenance. Ensure the space is within the environmental specifications recommended by Eaton, including ambient temperature, humidity, and airflow requirements. Confirm electrical room clearances and the availability of a stable floor surface capable of supporting the weight of the UPS and battery modules. Proper grounding is essential; verify grounding conductors are in place and that the facility’s electrical system complies with local codes. If you plan to mount in a rack, verify rack compatibility and the rack’s load-bearing capacity, as the PW9155 network, battery, and cooling components can add noticeable weight.

Pre-installation steps:

• Review the system diagram and installation guide for your exact model. Confirm the SKU and battery configuration (3-high) prior to shipment to ensure compatibility with your electrical room and monitoring tools.
• Inspect crates and components on arrival for any shipping damage. If damage is detected, document it and contact your supplier immediately.
• Prepare a dedicated circuit and appropriate circuit protection, including protective relays as required by local electrical codes. Ensure that the input power source meets the UPS’s voltage and frequency requirements and that there is adequate space for cable routing and future maintenance.
• Plan cable paths for input, output, bonding/grounding, and communication interfaces. Route cables to minimize interference, maintain separation from high-power devices, and facilitate easy service access.
• Install battery packs in their designated three-high stacks, following the manufacturer’s instructions for safe handling and connection. Use proper PPE and follow safe handling guidelines, as large battery systems can present hazard if mishandled.

Installation steps (high level):

• Place the PW9155 in the selected location, ensuring level positioning and secure mounting as required by the installation guide.
• Connect input power with appropriate protective devices and grounding. Verify that the supply matches the UPS’s electrical specifications and lock in the configuration in software.
• Attach the battery packs in the prescribed order, ensuring stable connections and secure fittings. Confirm battery health and perform a basic battery check prior to initial power-on.
• Connect output cables to the protected loads, following the load distribution plan. Keep critical devices on separate branches if possible to maximize uptime during maintenance.
• Power-on sequence: Enable the unit, perform self-tests, and verify that the UPS starts in normal operating mode. Access the management interface to configure network settings, monitoring, alert thresholds, and shutdown policies for connected devices.
• Run a controlled load test and execute a graceful shutdown test to confirm that the UPS responds correctly to simulated outages. Document results for future audits and maintenance planning.
• Implement monitoring and alerting: configure SNMP, email, or integration with your data center infrastructure management tools to receive real-time status updates and battery health notifications.

Ongoing maintenance tips:

• Schedule regular battery health checks and calibration of the inverter to preserve performance over time.
• Keep the UPS and battery compartments clean and free of dust, and ensure adequate ventilation to prevent overheating.
• Test the system periodically to confirm stable operation and reliable shutdown sequences for connected equipment.
• Keep spare batteries and service parts on hand to minimize downtime during routine maintenance or component replacement.
• Document maintenance actions and update your disaster recovery procedures to reflect changes in the UPS configuration or load profile.

Frequently asked questions

• Q: What does the 3-high battery configuration mean for runtime? A: The 3-high battery arrangement indicates modular stacks arranged in three levels to maximize space efficiency and scalability. This configuration enables extended runtime by adding or replacing battery packs while keeping the footprint compact. Runtime varies with load, battery health, and environment, so consult the manufacturer’s runtime curves for precise estimates under your specific conditions.
• Q: Can the PW9155 protect sensitive IT equipment during voltage disturbances? A: Yes. The PW9155’s online, double-conversion topology provides clean, stable power with excellent voltage regulation and fast transient response, helping to protect servers, storage systems, and networking gear from sags, surges, and outages.
• Q: How is management and monitoring handled? A: The PW9155 supports integrated management options and remote monitoring compatible with common IT infrastructure tools. You can configure alerts, perform remote shutdowns, and monitor battery health and runtime to support proactive maintenance and centralized control.
• Q: Is it suitable for healthcare or industrial environments? A: The PW9155 is designed for reliability in enterprise settings, including healthcare and industrial applications where downtime costs are high. Its robust protection, scalable runtime, and compact footprint make it a strong fit for mission-critical workloads in these environments, subject to regional electrical codes and standards.
• Q: How do I determine the appropriate battery size for my loads? A: Start by auditing your peak and average loads, then consult Eaton’s documentation for runtime curves and battery configurations. A qualified electrical engineer or Eaton representative can help tailor the 64-battery bank to your required protection duration and growth plans.