Product description

Eaton 9155 UPS

High power density means more power protection in a small footprint. Eaton’s 9155 single-phase uninterruptible power supply (UPS) is a proven market winner in its class. With scalable battery runtime options, the 9155 packs maximum battery runtime into a very small footprint. Customize your UPS with power distribution and an integral maintenance bypass switch for complete power protection.

Features of the Eaton 9155 UPS:

• True double-conversion online operation protects
  connected equipment from all nine of the most common
  power problems
• Compact tower design delivers maximum power density
  entire unit is only 12 inches wide and 33 inches deep,
  including batteries
• Provides 5,500 watts per square foot with .9 output
  power factor — protecting more equipment for every utility
  dollar spent, and leaving more room for expansion in the
  data center
• Easily add redundancy or increase system capacity with
  patented Eaton Hot Sync® paralleling technology
• Manage your power devices in your physical or virtual
  environment with Eaton’s Power Xpert® software and
  Intelligent Power™ Software Suite
• Advanced Battery Monitoring (ABM) technology increases
  battery life
• Enhanced communications allow network connectivity and remote management:
  • Two X-Slot communication bays
  • Relay output contacts
  • Two programmable signal inputs
  • Remote emergency power-off (REPO)

The following options for the Eaton 9155 are available:

• Maintenance Bypass Module (MBM)
  The optional MBM is installed on the UPS rear panel and is used to bypass the
  UPS during maintenance or servicing. The maintenance bypass switch on the
  MBM provides a Make-Before-Break (MBB) wrap-around bypass for UPS service
  without shutting down the load.
• Power Distribution Module (PDM)
  The optional PDM provides the same functionality as the MBM and also comes
  equipped with several different types of output receptacles.
• Wall-Mounted Bypass Switch
  The optional wall-mounted bypass switch is used to bypass the UPS during
  maintenance or servicing, providing wrap-around bypass for UPS service without
  shutting down the load.
• Parallel Tie Cabinet
  An optional parallel system with up to three UPSs can be installed to provide a
  parallel capacity and/or redundant system. This load sharing system provides more
  capacity than a single UPS and can provide backup, depending on the load and
  configuration. In addition, when one UPS is taken out of service for maintenance or
  is not operating properly, a redundant UPS continues to supply uninterrupted
  power to the critical load. A parallel Powerware Hot Sync Controller Area Network
  (CAN) Bridge Card provides connectivity for system metering and operational mode
  control. The parallel system consists of two to three UPSs, each with a parallel
  CAN Bridge Card, and a parallel tie cabinet.
• Input Isolation Transformer
  The optional input isolation transformer is located at the bottom of a 3-high UPS
  model. The input isolation transformer provides a neutral from a 208V or 240V
  input source with 240V output and can be wired to the UPS or to an MBM/PDM.
• Seismic Kit
  The optional seismic kit secures the UPS and optional EBMs for Zone 4 seismic
  installations.

Double Conversion Technology

Double Conversion Topology

The Eaton 9155 uninterruptible power supply uses the Double Conversion Online UPS topology.  This  provides the ultimate in clean and stable electrical power for critical applications.  Incoming AC power is fed to the UPS’ rectifier converting it from AC to DC power. The converted DC power routes to a battery charging circuit and to the inverter for conversion back to AC power. The resulting “double converted” electrical power is pure sine wave output providing near perfect electrical power for connected equipment.

To ensure 7/24 up time the double conversion UPS topology utilizes a static “bypass switch” within its circuity design. If the 9155 UPS detects a system failure, audible alarms will sound as the bypass switch is engages. This routes power around the failed UPS and ensures critical load power to target equipment.  This very important feature allows for 100% up time for critical equipment during repair.

In the event of total power failure, the UPS will power off the rectifier when the loss of power is detected. The UPS’ internal backup batteries will continue to supply DC power to the inverter. There is no transfer time as the transition to battery power is instantaneous. This feature provides true uninterruptible power to mission critical equipment.