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Applications
Computer and Data CentersServer Farms
Process ControlBroadcasting / SAT SystemsRadar control installations
Air traffic controlInternet Service Providers
Safety Systems in Power PlantsMedical Imaging Equipment
Mission Critical Applications requiring highest levels of protection and reliability
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Range
10-40 kVA 60-120 kVA
150-300 kVA 400-500 kVA
- Separate bypass feed possible- Maintenance bypass integrated- Same control electronics across the range
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Main Features
• True On-Line, double conversion with isolation transformer (VFI)
• State of the art technology
• Small footprint
• High efficiency (up to 94.5%)
• Best in class Output Power Factor
• Superior Battery Management (SBM)
• Back feed protection
• RPA configuration up to 8 units
• Extensive Interfacing Features
• Various options
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Concept
• independence of the input and output voltage and frequency (VFI)
• no break transfer to battery or bypass power
• back feed protection (standard)
• manual bypass to facilitate maintenance
• output transformer for galvanic isolation
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Back feed protection
Load
Battery bank
DC Cap
IGBT Inverter
Thyristor rectifier
Inverter isolation
transformer
Mains
DC link voltage
Static Bypass
back feed protection K6
Bypass
• Back feed protection K6 : preventing feedback to the mains from the inverter in case of mains failure and a fault in the bypass circuit• It provides a safer environment for end users and engineers• GE provides back feed protection as a standard. Others as option• Back feed protection is mandatory according to EN62040-1 (UPS safety)
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State of the Art Technology
• Higher reliability• Easy customisation
DSP inside + SMD• Faster POS (Power Operating System)
• Higher reliability due to higher integration• Enhanced overall reliability• Improved immunity against electrical disturbances
• Digital IGBT control• Energy savings
IGBT & SVM• High efficiency
Fully digital• Less parts count• No potentiometers
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Softstart
The thyristor rectifier can be activated gradually. In that way the full load will not be connected to the utility or genset preventing an instable situation. Softstart is programmable (default: 30 seconds)
Thyristor rectifier
Mains
Soft start by changing the firing angle of thyristors
Current
From
Mainstime
Talud100%
0%
Please note that soft
start is not related to
inrush current
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Performance IEC 62040-3
Level 1: Output voltage dependency from utility XXX YY ZZZVFI – Topology ( Double conversion/on-line)
Voltage & Frequency Independent
SitePro
Inverter
~ - -~
Load
Rectifier
Utility
Battery
VI – Topology ( UPS-Utility-Parallel operation / single conversion / Line-interactive )
Voltage Independent Utility
Inverter &Charger
~~
Load
Converter
Impedance
-~
Battery
VFD – Topology (off-line)
Voltage & Frequency Dependent
~ - -~BatteryCharger Inverter
Utility
Switch
Load
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Performance IEC 62040-3
Sine wave: THD < 8% (IEC 61000-2-2/-4) for all linear and non-linear loads (SitePro)
Non-sine wave: THD > 8 % with non-linear load
Non-sine wave: out of tolerance of IEC 61000-2-2/ -4
S
X
Y
S
X
Y
Battery operationNormal operation
Level 2: Output voltage quality depending on load (XXX YY ZZZ)
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Class 1
Class 2
Class 3
ZZZ
Dynamic load changes with non-linear load (0% – 100%– 0%)Dynamic load changes with linear load (0% – 100% – 0%)Change of operation mode (Utility – battery / Inverter - By-pass)
Performance IEC 62040-3
Level 3: Dynamic output voltage behaviour (XXX YY ZZZ)
SitePro
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Performance IEC 62040-3
VFI Voltage & Frequency IndependentFrequency Converter operation available
SS Output voltage THD < 8% for all loadsSitePro: THD < 3% for all loads
111 Class 1 performance
SitePro exceeding Class 1‘’Best in Class’’ dynamic response:+/-2% at load step: 0-100%-0+/-1.5% at load step: 0-50%-0
Class 1
SG Series
SitePro maintains its performance, also at unbalanced loads
SitePro Classification: VFI – SSS - 111
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Output Power Factor
Trend: most computer power supplies have power factor correctionThat means UPS systems have to supply loads with a high power factorSitePro has an output power factor (PF) higher than industry standardThis prevents the need for over sizing the UPSExample Load:
80 kVA / 70 kWPF: 70/80 = 0.875
Standard UPS:
80 kVA / 64 kWPF: 64/80 = 0.80
SitePro:
80 kVA / 72 kWPF: 72/80 = 0.90
In this case a standard UPS with output power factor 0.8 is not sufficient to supply the load, even though the rating is 80kVA.SitePro UPS can deliver more active power (kW) in comparison to an other UPS of the same rating
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Efficiency
Often a UPS is oversized with respect to the loadUsually it runs at partial load (in particular in parallel configurations)For most UPS systems this is not the optimal working pointThis causes the efficiency to be lower than at nominal powerWith a special inverter control strategy the SitePro has a very constant efficiency, for every load situation
Typical point of specification: full load
Efficiency vs. Load
70%
75%
80%
85%
90%
95%
25% 50% 75% 100%
Load
Eff
icie
nc
y
SitePro Other UPS
Typical area of practical use
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VFI Concept:
+ optimal protection for mission critical applications- energy losses
AC
AC
DC
DC
Bypass
Balance:
For less critical loads run UPS on bypass continuously
In case mains is out of limits transfer the load to inverterSuper ECO Mode: not only is the load supplied on
bypass, but the inverter is also switched off, increasing energy savings
Efficiency – Super ECO Mode
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Super ECO mode• Efficiency : 98% • to Inverter in case Bypass is out of limits • Fast error detection• Extremely short transfer times (<2 ms)• User definable scheduling• Available for 10 – 500 kVA
Bypass on/off
Inverter current
Inverter control
Output voltage
Fast Transfer to Inverter
< 2ms
Click here for more details on Super ECO Mode
Efficiency – Super ECO Mode
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Superior Battery Management
Because the thyristor rectifier can be controlled, the DC voltage can regulated down; just below the battery voltage. In that way the batteries can be tested. In case the batteries would have a failure, the rectifier is still supplying sufficient DC voltage to support the inverter.
Thyristor rectifier
Mains
Decreasing the DC voltage
making a current flow from the
batteries
SLA and NiCad battApplication flexibility
High recharge current availableTo support large battery capacities
Prediction of true backup timeNo surprises
Charger temp. compensatedTo prevent overcharging
Progammable safe battery testNo risk to interrupt load
supplyBattery earth fault detection
Safety for personell
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Reliability
RPA features
•Up to 8 units in parallel
•Any UPS able to be the logic leader
•Decentralized bypass
•Redundant Communication Bus
•Transparent failover and recovery process
•True redundancy with no single point of failure
To critical load
Utility Supply
Click here for more
information about RPA
SitePro is one of the most Reliable UPS systems in the market, using proven technology
To increase system reliability more units can be connected in parallel with GE‘s unique RPA concept
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Interfacing Features
1x RS232 Serial Communication Port
6 programmable potential free alarm contacts: - D plug - Terminals blocks
1x Emergency Power OFF contact
1x Gen-ON Input contact
1x Control Input contact
Optional: SNMP Interface Card (10/100Mbps auto-
select)
MODBUS RTU Interface (RS232 or RS485)
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Options for SitePro
Option kVA rating: 10-15 20-30 40-60 80 - 300 400-500
5th hamonic filter x x x x
DCU (5th+7th+11th+13th harm.filter) x x
12 pulse rectifier x x standard
12 pulse rectifier with galvanic separation x x x
11th & 13th harmonic filter (with 12 pulse) x x
Active Filter x x
Isolation transformers (rect. and/or bypass) x x x x x
Parallel junction output cabinets x x x x x
Matching battery cabinets x x x x x
Battery fuse box x x x x x
Top cable entry box x x x
Remote monitoring system x x x x x
Remote signalling box x x x x x
Special colours x x x x x
SNMP Interface card x x x x x
J UMP, IRIS x x x x x