Eaton Electrical 9390 - Manual (Page 7)

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Static Auto Tie
The Static Auto Tie (SAT) system
enhances reliability even further
so full load transfers can be
made autonomously. SAT adds
a wrap-around static switch to
the tie breaker in the Hot-Tie
system, then adds intelligent
controls so a power protection
system made up of two or more
separate UPS systems can auto-
matically transfer entire loads
in the event of traumatic, cata-
strophic failure or one system –
a rare but costly circumstance.
In the SAT configuration dis-
played in the diagram below,
there is a Hot-Tie circuit
between the outputs of the two
UPS modules that automatically
transfers the loads from one to
the other as necessary. This less
complex, dual path architecture
streamlines the distribution sys-
tem to eliminate series switch-
ing and reduce the potential
downtime of single power cord
loads by up to 50 percent. As
a result, the SAT architecture
offers a number of benefits,
including:
• Reduced capital expenses
• Eliminates need for traditional
downstream static transfer
switches
• Reduced installation costs
• Increased system reliability
and efficiency
• Decreased maintenance
requirements
• Reduced raised floor space
requirements
Advanced battery
management optimizes
battery performance
and service life
Eaton’s ABM ® technology uses
a unique three-stage charg-
ing technique that significantly
extends battery service life
and optimizes recharge time,
compared to traditional trickle
charging. An integrated battery
management system tests and
monitors battery health and
remaining lifetime, and pro-
vides advance notification to
guide preventive maintenance.
Optional temperature-
compensated charging moni-
tors temperature changes and
adjusts the charge rate accord-
ingly to properly charge the
battery and greatly extend bat-
tery life. A variable battery bus
accommodates 384 to 480V
(192-240 cell) configurations,
so the battery capacity can be
matched to your exact runtime
requirements—either a specific
runtime, an extension to existing
battery runtime, or utilization of
legacy battery installations.
With remote monitoring of
the UPS and battery system,
Eaton is there with you—able to
respond to alarms and see real-
time battery data to avert poten-
tial battery problems.
Fully Deployed Static Auto Tie Configuration
PDU
PDU PDU
PDU
9390 UPS 9390 UPS
A TS
STATIC AUTO TIE
SIS SIS
Auxiliary
Generator
Bus
SBM SBM
Auto
Static Auto
Tie Controls
A TS
TIE
Single P ower Cord L oads Single P ower Cord L oads
Utility S ource A
Utility S ource B Auxiliary
Generator
Bus
Dual Power
Cord Loads