Eaton 9395 UPS, Инструкция по установке и эксплуатации

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INTRODUCTION
Eaton 9395 UPS (450–825 kVA) Installation and Operation Manual
S
164201725 Rev 4
www.eaton.com/powerquality 1-6
The tie cabinet must contain Module Output Breakers (MOBs) with dual auxiliary
contacts for control of the system. Without dual auxiliary MOBs, UPMs are not
allowed to go to bypass individually during servicing. All UPMs will go to bypass
instead of just the UPM needing service, decreasing critical load protection. With dual
auxiliary MOBs, one UPM can be bypassed while the remaining UPMs support the
load as long as the remaining UPMs have the capacity to do so.
1.2.6 Input Output Module Configuration
The UPS can be supplied in an Input Output Module (IOM) configuration without the
bypass input connections, the static switch, the motorized wraparound bypass
breaker, and the backfeed protection contactor. This configuration is primarily used in
multiple UPS parallel systems that do not need a bypass for each UPS and use a
separate System Bypass Module (SBM) to provide system bypass capabilities.
1.2.7 Continuous Static Switch
A continuous static switch can be supplied in place of the momentary static switch to
provide transfer of the load from the inverter to the bypass source in the event the
inverter become unavailable. The continuous static switch eliminates the need for an
additional motorized wraparound bypass breaker.
1.2.8 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.
1.2.9 Energy Saver System and High Alert Modes
NOTE
Energy Saver System mode requires the UPS to be factory built with a Continuous Static Switch
(CSS). See Table 1‐1 for applicable configuration.
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.