Transcript שקופית 1

Eco Mode VS Online
High Efficiency
• Everyone wants to increase his application
efficiency
• Saving power and Green Energy is our major
concern
• High power density makes us worry about
efficiency
UPS
Let’s just look again at the UPS technologies and
topologies
VFD – Voltage and Frequency Dependant
In other words 99% Efficiency
On a standby UPS
VI – Voltage independent
In other words 98% Efficiency
Line interactive UPS
VFI – Voltage and frequency independent
In other words 90- 96% Efficiency
Online UPS
Standby/ Line Interactive
Usage of Online UPSs has proven over decades
that the load is VFI - as opposed to the standby
UPSs (VFD)
Eco Mode
Eco Mode
Eco Mode
• Certain companies are presenting UPS eco-mode
as being new technology with little or no
downside risks
• This is quite misleading because it is known since
decades as VFD or VI – line interactive or
standby.
Eco Mode
Efficiency
Reliability/
Availability
High
High
Low
Low
Saving
The USA’s power utility reliability
Saving
Saving
• Energy savings of about £5,000 per year for a
500kW rated data center running in Eco-mode
Worth
• Whether these savings are worthy when considering
the risk of downtime, the risk of damaging billion of
pounds of data…
• Who can referee?
• The only person who can decide is the one worried
about his equipment, his downtime, how he is paying
billions to upgrade his data center to Tier II, III and IIII,
etc.
Gamatronic
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