lp series 400v ce
DESCRIPTION
LP Series 400V CE. GE Consumer & Industrial September 2004. Range. CE Marked, 400V In & Out, 50/60Hz kVA Ranges 10-20-30kVA True On-Line, Double Conversion Voltage and frequency independent Transformerless Superior Performance Superior Battery Management Excellent Output Regulation - PowerPoint PPT PresentationTRANSCRIPT
LP Series 400V CEGE Consumer & IndustrialSeptember 2004
2 /GE /
Range
• CE Marked, 400V In & Out, 50/60Hz
• kVA Ranges– 10-20-30kVA
• True On-Line, Double Conversion– Voltage and frequency
independent – Transformerless
• Superior Performance– Superior Battery Management– Excellent Output Regulation
• Clean Input – High input power factor (0.98)– Low input current THD (<8%)
• Redundant Parallel Architecture™– Up to 4 units parallel– Decentralized bypass
• 24x7 Field Service Coverage
Digital Energy™ LP 33 Series UPS10-20-30 kVA Power400 VAC 50/60 Hz
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Technical Description
• Neutral connection is required
• Two battery strings
• Filtering is done by inductors and capacitors
• Two DC link voltages
• Booster is creating a regulated DC link
• Neutral is ‚‘through-going‘‘ (input neutral = output neutral)
Battery bank 2x
DC Cap
2x
IGBT InverterRectifier
LC
filterMains
DC link -
DC link +
Booster +
Booster -
Through going neutral
Batt.Charger
Batt.Charger
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Input voltage window
Extremely Wide Voltage Window Less battery operationsVoltage :- 25% +20%Frequency :+/- 10%
Wider Range is Better
+10%-15%
Input Voltage
Input Frequency
208Vac +20%-25%
+5%
-5%Competition
+10%
-10%
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Input performance
Harmonics Feedback
• Current THDi : <8%
• Power Factor : >0.98
Advantages:
• No additional filters required
• Prevents need for oversized GenSet
• Reduced cost for cabling and fusing
Sinusoidal input current waveshape
(THD <8%)
0 1000 2000 3000 4000 5000 6000 7000 8000 9000-0.08
-0.06
-0.04
-0.02
0
0.02
0.04
0.06
0.08segnale
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Energy Consumption
Efficiency: 91% (double conversion mode)
AC
AC
DC
DC
Static Bypass
Rectifier Inverter
BypassSupply
MainsSupply
BatteryBank
• The output voltage is newly generated, independently from the input voltage.
• Voltage and frequency variations at the input are not present at the output.
• Heat losses are present in Rectifier and Inverter
OutputFilter
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Supply the load via the bypass circuit in order to prevent heat losses. This can be done only in case the bypass supply is in tolerance
AC
AC
DC
DC
Static Bypass
Rectifier Inverter
BypassSupply
MainsSupply
BatteryBank
Load
• Load is supplied via the bypass
• The rectifier keeps the batteries charged
• The inverter is switched off (no heat losses)
OutputFilter
ECO Mode
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Performance of ECO Mode
Simulation of transfer back to inverter
Bypass on/off
Inverter current
Inverter control
Output voltage
Fast Transfer to Inverter
< 2ms
• In case the bypass supply is out of tolerance the inverter will start immediately
• This transfer is done within 2 ms, which is more than sufficient for most loads
• Bypass supply voltage tolerance: +/- 10% (adjustable)
• Bypass supply frequency tolerance: +/- 5% (adjustable)
• Output filter provides mains filtering and power factor correction from 0.8 to 0.9 (dep. on load)
• Efficiency up to 98%
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RPA Redundant Parallel Architecture
RPA features
•Up to 4 units in parallel
•Any UPS able to be the logic leader
•Decentralized bypass
•No single point of failure
To critical load
LP Series is a cost effective and reliable UPS system, using proven technology
To increase system reliability more units can be connected in parallel with GE‘s unique RPA concept
Utility Supply
10 /GE /
Interfacing Features
1x RS232 Serial Communication Port
4 Programmable potential free alarm contacts on terminals blocks
1x Emergency Power OFF contact
Optional: SNMP Interface Card (10/100Mbps
auto-select)
MODBUS RTU Interface (RS232 or
RS485)
Extended customer interface with 6
programmable pot. sree
contacts and Gen-On
contact
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Highlights
• Low Input Current THD (<8%)
• High Input Power Factor (>0.98)
• ECO Mode
• RPA with decentralized bypass
• Excellent output performance
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