Chapter 1 | Introduction |
The Eaton® 9170+ uninterruptible power system (UPS) is a modular UPS that contains battery modules and power control modules (referred to as power modules). These modules plug into a rack cabinet structure containing additional control, communication, and display functions that enable integrated control of all power modules. The UPS is housed in a single cabinet, with extra battery capacity housed in auxiliary battery cabinets.
The pluggable power modules can be removed and replaced
All power modules share the load requirements equally. For example, three power modules are capable of supplying a total of 9 kVA. If a load requires only 4.5 kVA, each power module supplies 1.5 kVA to the output. If one power module is removed or for some reason fails, each of the two remaining power modules would supply half of the load, or
2.25kVA. In other words, redundancy exists when the load can be supplied by less than all of the installed power modules.
The UPS can be configured with up to seven power and/or optional battery charger modules; its output is limited such that an excess number of power modules allow the failure of one or more modules without causing the UPS to lose any functionality.
To permit UPS removal from the power path while maintaining power to the loads, an external bypass switch is required. This switch is optional but recommended for system serviceability.
Eaton 9170+ UPS | 1 |
