UPS (Un-Interruptible
Power Supply)
APA ITU UPS ?
Input voltage Output voltage +/-1%
+Tenaga Listrik sementara yg digunakan untuk menjadikan Supply
Power secara terus menerus kepada beban walaupun terjadi
Pemadaman PLN
+Memperbaiki kualitas Power dari PLN dengan graph sinus yang lebih
sempurna sehingga power yang digunakan menjadi lebih efisien
Contoh Instalasi UPS
PLN Input panel Service bypass Distribution panel
panel
Loads
Diesel generator
3
Apakah penggunaan Genset sudah Cukup – kalau
terjadi PLN mati ? Jadi tidak diperlukan lagi UPS.
• Penggunaan generator set belum cukup untuk beban critical
disebabkan karena apabila terjadi black out maka listrik pada beban
akan hilang hingga generator set menyala ( terjadi jeda waktu hingga
genset menyala , paling tidak 10 detik )
• Sedangkan untuk beban-beban yang critical , tidak boleh kehilangan
power sama sekali walaupun dalam hitungan detik.
ADA 2 MACAM UPS
1. BATTERY UPS ( DOUBLE CONVERSION)
Penyimpanan sementara adalah pada BATTERY.
2. FLYWHEEL UPS
Penyimpanan sementara adalah pada FLYWHEEL
CAT FLYWHEEL
UPS
Integrated Solutions Provider
Typical Systems Operations with UPS
Auto Non-Critical
Transfer Load
Utility / Switch
Mains
Cat Flywheel UPS
Critical
Cat Start
Signal Load
Gen-Set
Flywheel UPS Technology
250kW Motor/Generator/Flywheel
Field-replaceable
ball-bearing
cartridge Field coil
Magnetic bearing
integrated into Flywheel,
field circuit motor-
generator
rotor
Air-gap No permanent
armature magnets enables
high tip-speed and
Smooth back-iron, high output power
no slots and low loss
Flywheel Technology
• Flywheel constantly spins (7,700
rpm) in a vacuum & magnetically
unloaded
• Top & Bottom DC Field Coil levitate
flywheel
• Stores energy as motion (Kinetic
Energy)
• When power is interrupted, inertia
keeps it spinning
• It is a generator and converts
kinetic energy to electricity
Magnetic Field Flow
Power Conditioning
Frequency
Outage
Spikes
Brownout
Corrected
Transients
Sine wave
Surge The CAT UPS corrects
all 9 IEEE defined power problems
Sag by use of TVSS, line inductance,
active filtering, power converters and
Harmonic flywheel energy.
Distortion Line
Noise
Load Transfer during Power Failure
Utility Outage
UPS Syncs
Transfer Switch
with Gen Set
Signals Gen Set
(adjustable)
UPS walks in
Gen Set starts and On Gen Set,
Gen Set
output stabilizes (adjustable)
UPS recharges
t=0.0 t=3.0 t=10.0 t=11.5 t=13.0
Typically 5 sec. Of full power
still available
The Flywheel UPS Product Family
• Cat UPS 250
– Single Module System (SMS)
• Cat UPS “G” Series
– Multi Module System
• max. 3 flywheels
– Expandable up to 500 kVA per MMS
• Parallel up to 7 UPS systems
– Up to 3,500 kVA in a parallel configuration
• Cat UPS “Z” Series
– Multi Module System
• max. 4 flywheels
– Expandable up to 1000 kVA per MMS
• Parallel up to 7 UPS systems
– Up to 7,000 kVA in a parallel configuration
Temperature Operational
25 Degrees C Optimal Up to 40 Degrees C
Flywheel UPS can be installed in electrical rooms and other low cost
spaces with higher ambient temperatures that are not conducive to
batteries.
Maintenance
» 2 - 4 PM’s / Year » 1 PM / Year
» Hours of service » 4 yr bearing change out
» Costly Battery replacements
Footprint – Twice the Power in half the space
250kVA/225 kW Battery-Based UPS 250kVA/225 kW Flywheel UPS
3.7 Sq m (minimal battery) 1.3 Sq. m
7.43 Sq. m. w/ service clearance 2.69 Sq. m w/ service clearance
Front Access only
Efficiency
~90-94% Efficient 97 - 98% Efficient
Industrial Power Protection Applications
Industrial Plant Protection
• High Speed Printing
Operation
• Cat UPS 900
• Outdoor Container
• Deployable unit
Industrial Power Protection Applications
Thailand: Food Manufacturing Plant
Continuous Power Protection Applications
New York, USA: Radio Station, Empire State Building
VA Medical Center
• Dallas, TX
• UPS 300
• Protecting multiple MRI
systems from voltage
swings and outages
• Severe step load on UPS
• High harmonic load
Continuous Power Protection Applications
Monster.com Data Center
• 6 - Cat UPS 900’s
• Drop over
enclosure
• Protects One Call
server farm
• Purchased 2
additional 900kVA
THANKS
