25-75 kW
User's and Installation Guide
16
2..3.4 Variable Module Management System (VMMS)
Eaton Variable Management Module System (VMMS) is a key component of Eaton EAA. Eaton VMMS
technology maximizes UPS efficiencies at low load levels while supporting the load with continuous double-
conversion power but increase the system efficiency by dynamic adjusting the UPM active and idle.
2.4SoftwareandConnectivityFeatures
2.4.1 Customer Interface
Mini-Slot Communication Bays — there are three communication bays for mini-slot connectivity cards.
Mini-slot cards are quickly installed and are hot-pluggable. See Chapter 5 Communication interfaces for
additional information.
2.4.2 Power Management Software
Intelligent Power software products offer tools for monitoring and managing power devices across the
network. See Chapter 5 Communication interfaces for more information.
2.5 Options and Accessories
Contact an Eaton sales representative for information about the available options.
2.5.1 External Switch Cabinet (ESC)
The external ESC is enclosed in its own separate cabinet, includes UPS external maintenance bypass
switches (EMBS), rectifier input breaker (RIB) and battery circuit breaker (BCB). The MBS wiring has two
different options: two- and three-switch configuration. The two-switch model contains a Maintenance
Isolation Switch (MIS) and a Maintenance Bypass Switch (MBP). The three-switch model contains a Bypass
Input Breaker (BIB) in addition to a MIS and an MBP.
The two-switch model assumes that the UPS rectifier and bypass are coupled through dedicated breakers
and separate cables from the switchgear. However, the three-breaker model can be connected to the
switchgear with only a single cable, and the cable connections between the panel and UPS are run
separately.
For more information, see Figure 2-8: Two-switch MBS electrical connection drawing and Figure 2-9:
Three-switch MBS electrical connection drawing.
To Next Page
Loading...
Need help?
General
