Eaton 9395 Plus 1, Инструкция по установке и эксплуатации

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INTRODUCTION
Eaton 9395 Plus 1 UPS (225–275 kVA) Installation and Operation Manual
S
164201710 Rev 2
www.eaton.com\powerquality 1-5
1.2.7 Inherent Redundancy
To deliver greater reliability, the Eaton 9395 UPS can be configured by an authorized
Eaton Customer Service Engineer
for inherent redundancy. When configured, the
UPS automatically becomes redundant if the load is at or below the capacity of the
UPMs minus the capacity of one UPM. Under normal conditions the UPMs in the
UPS share the load equally. If one or more UPMs becomes unavailable and the load is
at or below the capacity of remaining UPMs, the remaining UPMs supply the load
instead of transferring to bypass.
If the capacity of the UPMs falls below the redundancy level or the load increases
above redundancy level, but is still able to maintain the load, a loss of redundancy
alarm is sounded. If the load exceeds the capacity of remaining UPMs, the UPS
transfers to bypass.
1.2.8 Energy Saver System and High Alert Modes
NOTE
The Variable Module Management System and Energy Saver System modes are mutually exclusive.
As a subset of Online mode, the Energy Saver System (ESS)mode maximizes
efficiency by eliminating unnecessary power conversion when the commercial power
source is within acceptable voltage and frequency limits. In this mode, the UPS is
actively monitoring the critical bus and instantly and seamlessly transitions to
double-conversion mode (inverter online) if a commercial electrical power brownout,
blackout, overvoltage, undervoltage, or out‐of‐tolerance frequency condition occurs.
In High Alert mode the unit transfers from ESS mode to double-conversion mode or if
in double-conversion mode remains in double-conversion mode for a default time
period of one hour. High Alert mode allows the user to place the unit in
double-conversion mode when outside conditions could cause a power disturbance.
At the completion of the time period, the unit defaults back to ESS mode. If the High
Alert command is received during the time period, the timer will be restarted.
1.2.9 Variable Module Management System and High Alert Modes
NOTE
The Variable Module Management System and Energy Saver System modes are mutually exclusive.
The Variable Module Management System (VMMS) mode maintains UPM
redundancy and achieves higher efficiencies by intelligently controlling the UPM’s
load level. The efficiency rating for each UPM is highest when loads are greater than
50% of the system rating. Therefore, shifting the load to fewer UPMs can achieve
higher efficiencies when the UPS load is lighter.
In VMMS mode, the UPS is actively monitoring the critical bus and UPMs are
available to assume load in less than 2 ms to respond to load changes.
The VMMS feature has three configurable modes of operation: Online mode, Online
mode with VMMS, and High Alert mode. All modes are selectable from the front
panel.
VMMS mode supports both distributed bypass and SBM parallel configurations.
In High Alert mode, all idle UPMs go online for one hour. At the completion of the
hour, the UPS defaults back to VMMS mode. If the High Alert command is received
during the one hour, the one hour timer will be restarted.