22. Also
ā¢ Low resistance, slow speed air paths
ā¢ Dimplex heat exchange unit
ā¢ Servers heat the CIX ofļ¬ces!
23. Power
ā¢ 10kv low impedence looped
connection to the national grid
ā¢ Using GE Super ECO UPSās
offering >98% efļ¬ciency
24. !
Power
o d
Normal mode
Bypass
Static bypass
supply
o
ā¢Normal mode
ā¢ The output voltage is newly generated, Rectifier Inverter
independently from the input voltage
Rectifie AC DC Load
ā¢ Heat losses are present in rectifier and inverter r
G
DC AC
supply
Battery bank
ā¢Super Eco Mode
ā¢ Load is supplied via the bypass Super Eco Mode
ā¢ UPS rectifier keeps the battery charged
Bypass
ā¢ UPS inverter switched off supply
Static bypass
(no heat losses)
Rectifier Inverter Transf.
Rectifie AC DC Load
r DC AC
supply
Battery bank
25. End Result
Standard DC CIX
Chiller 33% 12%
Humidiļ¬er 3% <1%
CRAC 9% 4%
IT Equipment 30% 80%
PDU 5% 0.01%
UPS 18% <2%
Lighting 1% <1%
Switch Gear 1% 1%