Specifications

EATON Pulsar Series and Powerware Series Product Catalogue
38
Powerware Hot Sync Technology
Powerwareseries
Paralleling UPS technology
The number one function of a UPS is to supply continuous condi-
tioned, reliable electricity to a critical load. In case of a single unit,
reliability can be increased by modular design, where redundant
internal modules can take over each others’ tasks, if one of the
modules fails.
To further increase reliability, a true parallel configuration can be
employed, where two or more units share the load. A failed unit is
isolated while the remaining ones continue to support the critical
load. Competitive UPS products on the market utilise centralised
or distributed load-sharing technology with the master-slave prin-
ciple, which introduces a risk of single point failure. The abso-
lute reliability of a UPS system can be achieved with patented
Powerware Hot Sync
®
parallel load-sharing technology. (Figure 1)
HotSynctechnologyisdesignedforparallelredundantN+1sys-
tems to satisfy 24/7 applications. It can also be used in parallel
capacity systems to benefit from scalability for customers’ ever-
increasing load demands.
Hot Sync erases single point of failure, with an ability to syn-
chronise and support critical loads independently of other UPS
modules in the system. UPS modules can share loads without any
communication wiring to the outside world.
• Availableforbothsingle-andthree-phase
productstomeetanymission-criticalneedup
to2.5MVA(400V)systems
• EasyandmodularparallelUPSsystemupgrade
withadditionalcapacityorredundancy
• Erasessinglepointoffailure
User benefits
10%
Failure probability / year
Utility
Single UPS
Modular UPS
Parallel redundant UPS
Hot Sync
99,99%
99,999%
99,9999%
No common
logic
Hot Sync
20%
Figure 1. Power availability with various power supply configurations.