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ANSWER DRIVES GS
FOR PHOTOVOLTAIC PLANTS
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> Reliable and Efcient page 03
> Answer Drives GS page 06
> Answer Drives GS Multipower Inverter page 10
> The Answer Drives GS Station page 14
> The MIRO Function page 20
> ARTICS Smart Energy page 22
> Control and Monitoring page 26
> Technical Specications page 32
> The Energy Meter page 48
> The Weather Station page 49
> The Web Portal page 50
> Our services page 54
160 years of experience committed
to the future
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Reliable and efcientThe right solution for your needs
Nidec ASI offers a complete range of solutions for high power grid-connected PV plants.
Our Answer Drives GS inverter had different congurations including: centralized and
multipower versions
and turnkey stations.
We also provide all of the support technology including:
> String boxes and subeld cabinets
> Transformers> Substations with medium voltage cells
> Monitoring System
> Weather stations
Our solutions have been designed to obtain the greatest quantity of power from your PV
plant enabling fast return on investments and ensuring extended MTBF periods for long
lasting operation over the years.
THE ANSWERIN RENEWABLE ENERGY
>> Cutting Edge solutions...
...protecting the environment
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The Answer Drives GS derives from our experience in inverter manufacture for heavy indus-
try.
The Answer Drives GS base module is, actually, our Answer Drives 3000 inverter, which
has been used in numerous installations all over the world owing to its reliability and ef-
ciency.
Our experience in applications requiring AFE (Active Front End) solutions has enabled us to
develop a product particularly suited for the power production industry that works with on-
site distribution of electricity into the grid and commercial PV systems.
We believe that only the best can be expected from an industry leader: our best is supplying
a solution that guarantees the highest level of exibility in response to the specic demands
of your system whilst ensuring the longevity of our inverters.
This is achieved using a high level of standardization: Nidec ASI offers its customers 2 ver-
sions of inverters (depending on point of delivery), each available in 4 classes depending on
the voltage range of the PV system.
In addition, our inverters have been designed with a careful choice of components to en-
sure the highest levels of performance during the life cycle of your system.
ANSWER DRIVES GS
>> Standardization and longevity:
the roots of exibility
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Versions
Each class of Answer Drives GS inverters is available in two versions depending on the
application and the voltage of the grid to be supplied with power from the inverter.
Net metering Low voltage 400VL Version
Utilities Medium voltage 15/20KVM Version
Control
INVERTERCleanPowerFilter
400V50Hz
TRS
FIilterEMC
GRID
Modbus
Low voltage PVxL Version
The transformer is mounted inside of the panel only for the lowest power outputs.
*
FilterEMC
* Insulation control
DK
15/20KV50Hz
TRS
FIilterEMC
CEI-016
GRID
Modbus
Medium voltage PVxM Version
CleanPowerFilter
Control
INVERTER
*
FilterEMC
* Insulation control
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ANSWER DRIVES GSMULTIPOWER
>> Maximum performance...
...for a greater energy production Keeping loss of power in a faulty module to a minimum
> Greater production in case of partial shading of the PV array
> Reduction in maintenance costs owing to a unique spares kit for the installed converters
> Each module is equipped with its own MPPT to maximize the power produced
> Conguration of modules based on the system size and the number of panels used
> Module synchronization to reduce electromagnetic emissions
> DC end load circuit breaker and AC end breaker switch for each inverter module for the
purpose of enabling localized intervention whilst keeping the rest of the system in operation
840
630
420
210
Current [A]
Rated power [kW]
101 202 303 404
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ANSWER DRIVES GSSTATION
>> The Plug&Play solution Easy to install
> Does not require any additional structures
> Requires just the connection of the PV System and the MV distribution grid
The exibility of the Answer Drives GS station enables the best conguration for every
type of system.
Availability: single station, multiple stations with star conguration and multiple stations
with ring conguration.
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Safety doors:each enclosure is equipped with doors with locks,for the safekeeping of the various components.The doors have tamper-proof hinges,that open outwards and anti-panic handles.
3
The enclosure with a painted and insulated carbon steel structure and raised false ooring ensureslong-lasting durability (over 25 years).
1
The insulation of the walls and the roof provides high thermalinsulation from the e nvironment.
2
The input line room contains the MV input line panel,equipped with an automatic general DC switch, protectionrelay and relative auxiliaries, the transformer for auxiliarypower supply, the UPS and an optional night time powerfactor correction bank.
4
The MV/LV transformer room contains an MV/LV transformerwith one or two secondaries and induced-draft cooling towers.The transformer room a safety lock included.
5
The LV equipment room includes the Answer Drives GS converter system with MIRO function forconversion system optimization even with low insolation levels.There are also service cabinets, air conditioners, the UTF [scal counter] meters that measure theelectricity produced and the supervision system that monitors all system data from a remote location.
6
The IP54 rating guarantees the installation in any environmental conditions.
3
1
56
4
2
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>> Cooling System:
efciency optimisation Pure Free Cooling: with low external air temperature the conditioner acts like a normal
ventilation system with external air exchange. The compressor is turned off.
> Assisted Free Cooling: with relatively low external air temperature the free cooling
operates yet if it is not low enough to keep the internal temperature at the required value,
the compressor comes on as required by the temperature.
> Cooling: the compressor is running. The system acts like a regular air conditioner.
The Free Cooling, function, by modulating the use of the compressor, ensures reduced
power consumption for enclosure cooling. Full power application occurs only when outside
temperatures are very high.
To ensure the continuos operation, the overall cooling power for the enclosure is oversized:the system operates even if one of the air conditioners is out of service.
The free coolers, compared to regular ventilator fans, eliminate dust and reduce the level of
humidity in the air, being potential causes of electronic equipment malfunction.
Nidec ASI has also certied Answer Drive GS for use with water-cooling.
This cooling method improves dissipation.
The water-cooled enclosure, compared to the air-cooled version, is smaller and easier to
maintain (there are no lters to change and no liquids to top up).
An integrated water/water cooling control unit is available upon request for combined heat
and power systems.
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MIRO FUNCTION
>> Aim for efciency
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ARTICS SMART ENERGY
>> Control at your ngertips not produce EM interference that interfere with the network, especially when there are many
inverters connected
> contribute to the frequency and voltage stability of the network, managing the active and
reactive power produced depending on the load requirements
> maintain service even in the presence of strong network disturbances
> be equipped with a communications system suitable both for the transfer of the data
required for network control to a higher-level control system in order to receive the proper
commands
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Nidec ASI has made its inverters smart by including advanced functions necessary for their
application within the ARTICS Smart Energy active energy management platform.
The system includes the following features:
Power limitation in conformity with the law EEG 6 on renewable energy and grid
safety management
To avoid short term overloads on the grid it is possible to
establish the maximum amount of power the inverter will
input into the grid by setting a parameter.
The maximum amount, variable from 0 to 100%, is dened
by the utility provider and is transmitted to the inverter byway of serial port.
Reactive power is managed according to three parameters:
> The parameter that denes the minimum voltage variation
required, causing a reactive power variation.
> The parameter that establishes the reactive power variation
caused by a grid voltage variation during operation with
active power at a nominal level; the reactive power variation
is implemented after a time that may be set.
> The parameter that sets the minimum time that the voltage
variation must last to require that the correspondent
reactive power variation be activated.
* The reactive power value required must be taken into consideration when sizing the inverters.
Dynamic voltage control (FRT)
The dynamic network support, is the control set out to ensure grid stability in case of
sudden drops in voltage. This type of control is often indicated as Fault Ride Through.
Power plants that sustain the grid must, in case of a voltage
drop, avoid unintentional disconnection so as not to cause a
collapse of the grid. Reactive power input into the grid must
also contribute to its support. After recovery from a
malfunction, reactive power input must not be greater than
the input before the fault.
ARTICS Smart Energy responds to the requisites set by MV directives and by the BDEW
directive.
254
Active power regulation according to the frequency
The inverter automatically reduces the active power input in the event of an increase in
frequency over the established value by a parameter with a
P% / Hz gradient of the power available.
The active power may be increased again only if the frequency
value returns below the parameter. The power gradient is set
with a parameter. This function contributes to the stabilization
of the grid frequency.
Grid support by way of reactive power
To keep the mains voltage constant, inverters provide inductive or capacitive reactive power
to the grid. Three variations may occur:
a) Fixed value for reactive power*.
The utility provider denes the xed value, set by way of a parameter, for reactive power.
If the reactive power is positive then it is of the inductive type, and when vice versa it is
capacitive. Some utility providers require the reference value to be set at tan.
The tan, value set by way of serial, is dened with a parameter in the -0.484 to +0.484
range corresponding to cos = -0.9 to +0.9.
b) Setpoint variable of reactive power according to the grid voltage Vgrid
The input of reactive power according to the network voltage is used to compensate the
slow voltage variations at the point of connection of the power plant to the grid.
P
Pn
0
Pnom Frete[Hz]
P%
Q [%]
+0,31
-0,31
0 Vrete
0
Q [%]
Vrete
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CONTROL AND MONITORING
>> ADLog remote control Acquisition of data using analogue sensors
> Connection of the PV system inverters and of the string boxes to the grid
> Digital/analogue output control for alarm signals or external device management
> The number of inputs/outputs and communications ports satises the requirements of the
systems
> Multidrop (RS485) control with data gathering on the production status of each inverter
> Multidrop (RS485) local string connection boxes control, with acquisition of the process
variables (voltage and current) and operational status
> Display of system information with a large LCD graphic display> Navigation and accessibility to data with a 12-button keyboard, plus 4 programmable
function keys
> System monitoring with alarm conditions from inverters or string control boards
> Control of external devices and analogue/digital sensors
> Local connection to the system network by way of Ethernet 10/1 000 Mbps port
> Remote connection via GSM/GPRS for plant data transmission to the remote control system
> E-mail and SMS message transmission
> Internal Web Server, HTML pages navigable from a PC with an Internet browser for plant
operational data and on the status of the inverters
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The Smart Control is based on a PLC system with a PC
The PLCs are capable of acquiring and checking all available information from the eld
whilst the PC ensures all of the data management and processing functions including
reporting. The system is equipped with two supervision servers.
The string boxes, connected by way of Modbus RTU to the PLCs, read the current of each
string. A network analyser also assesses the AC output integrity for each individual inverter.
The GSE meters for each inverter (for point of delivery) and for auxiliaries bypass point
enabling an exact and detailed calculation of production.
The weather station, equipped with secondary standard" insolation sensors enable
calculation of performance indexes with the highest possible precision.
>> Smart Control for large systems
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Smart Control performs the following functions:
PLC
> System automation management (alarms, commands, etc.)
> Acquisition of string box data
> Acquisition of inverter data
> Acquisition of the data from the different system safety features
> Acquisition of MV areas data
> System auxiliary management
> Performance of media and integration operations for production of log data to be
archived
> Calculation of the real time PR (Performance Ratio) and at time intervals
> Calculation of the annual PR
> Internal use of the PVSYST software models for the formation of the PR;
> Supervisor management and conguration of all of the system's string boxes
> Extended alarm management
> Network diagnostics
> Possible weather station readings
> E-mail transmission of alarms
Other Functions
> Synchronization of all devices using the NTP server
> External weather station data acquisition
> Remote access using dedicated software
> Remote automation system maintenance (PC and PLC) with possibility of software updating
PC
> Continuity of logging owing to the hot redundancy between 2 machines
> Logging calculated on a 15-minute frequency base, with daily, monthly and yearly
aggregation
> Logging of signicant eld signals every 15 minutes
> Field signals reporting at any time interval
> Export of log data into Excel format spread sheets
> Display of the line status at all levels
> Calculation of the performance indexes pursuant to the IEC 61724 standard
310
12000
10000
8000
6000
4000
2000
0
-20000 0,2 0,4 0,6 0,8 1,0 1,2
90
81
72
63
54
45
36
27
18
9
[]
05:00:00 08:45:45 12:31:31 16:17:16 20:03:0219:02:2011 19:02:2011 19:02:2011 19:02:2011 19:02:2011
ET,LOSS
EG,LOSS
ES,LOSS
EW,LOSS
EM,LOSS
ESail,LOSS
ESTAND
EDC
EAC
Recalculation
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TECHNICAL SPECIFICATIONS>> General Technical Specications 0,99 @Pac
Auxiliary power supply 3 x 400Vac +N, 230V 1f from UPS
Protection degree EN 60529 IP54
Operating temperature -10 ~+40 C (> 40 C reduced by 1% per C max 50 C)
Altitude Up to 1000 m a.s.l. (> 1000 m reduced by 1% for each 100 m,
max 3000 m)
Relative humidity < 95% (non condensing)
Earthing kit Optional (on negative or positive pole)
User interface Back lit graphic display, 3 led, 20 keys
Low voltage EU Directive EMC 2006/95/EC
EMC Harmonized te chni cal standard: CENELEC EN 60439-1
Harmonized technical standard: CENELEC EN 50178
Conformity EU Directive EMC 2004/1 08/EC
Legislative Decree no. 194/07
Connection to MV: CEI 016, LV: CEI 021 (in progress)t he grid REAL DECRETO RD 1663/2000 (Spain)
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* See note at page 33 Rated output current for low voltage version @ 400 V.
Answer Drives GS PV7M and PV7L Inverters
>> Technical data
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376
Efciency of the inverter and Clean Power lter measured without control losses. Other powers upon request.
* See note at page 33 Rated output current for low voltage version @ 400 V.
Answer Drives GS PV9M and PV9L Inverter
>> Technical data
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398
Answer Drives GS Station with water cooling
Efciency of the inverter and Clean Power lter measured without control losses.
Euro-eta: 0.03x [5%]+ 0.06x [10%] + 0.13x [20%] + 0.10x [30%]+ 0.48x [50%]+ 0.20x [100%].
Note: Efciency of the supplied Nidec ASI transformer at rated power 99% .
Efciency indicated without the MIRO function.
Answer Drives GS Station with air cooling
Efciency of the inverter and Clean Power lter measured without control losses.
Euro-eta: 0.03x [5%]+ 0.06x [10%] + 0.13x [20%] + 0.10x [30%]+ 0.48x [50%]+ 0.20x [100%].
Note: Efciency of the supplied Nidec ASI transformer at rated power 99% .
Efciency is indicated without the MIRO function.
>> Technical data 0,99 @Pac
Auxiliary power supply 3 x 400Vac +N, 230V 1f from UPS
Protection degree EN 60529 IP54
Dimensions H = 2,9m, L = 2,4m, P = 6 - 9,1m depending on power
Operating temperature -10 ~+40 C (> 40 C reduced by 1% per C max 50 C)
Cooling method Standard version Water/Air
Cogeneration Water/Water
Relative humidity < 95% (non condensing)
User interface Back lit graphic display, 3 led, 20 keys
Low voltage EU Directive EMC 2006/95/EC
EMC Harmonized te chni cal standard: CENELEC EN 60439-1
Harmonized technical standard: CENELEC EN 50178
Conformity EU Directive EMC 2004/1 08/EC
Legislative Decree no. 194/07
Connection to CEI 016
the grid REAL DECRETO RD 1663/2000 (Spain)
Dati di uscita
Rated Rated Maximumcurrent power power
Iac Pac PMac
A KW KW
1020 477 525
1530 716 787
1830 856 941
3060 1431 1575
Rated Ratedcurrent power
Idc Pdc PPV
A KW KW
1071 489 576
1606 734 863
1921,5 878 1033
3213 1467 1728
OUTPUT DATA INPUT DATA Max.recom.
PV power
CODECN8M580N20W
CN8M860N25W
CN8M1K0N25W
CN8M1K7N30W
ENCLOSURE20 feet
25 feet
25 feet
30 feet
SIZE500kW
800kW
1000kW
1500kW
5% 10% 20% 30% 50% 80% 100% eta[%]
CN8M580N20W 92,6 95,6 97,1 97,5 97,9 98,0 98,0 97,5
CN8M860N25W 92,6 95,6 97,1 97,5 97,9 98,0 98,0 97,5
CN8M1K0N25W 92,7 95 97,1 97,5 97,9 97,9 97,9 97,4
CN8M1K7N30W 92,6 95,6 97,1 97,5 97,9 98,0 98,0 97,5
Efciency [%], Pdc/ Pdc_nom @ Vdc (650V) EuroSTATIONANSWER DRIVES GS
ANSWE R DR IVES GS
PV Voltage range UDC 430 - 760Vdc (528-800Vdc option)
Maximum DC voltage UDC, max 880V (1000Vdc option)
Maximum operational DC voltage UDC, max 820V
DC voltage ripple UPP < 3%
Overvoltage protection PV end integrated, optional on grid end
Output voltage UAC 270Vca/15-20kVca (330Vca/15-20kVca option)
Type of Utility IT Grid
Grid frequency Hz 50/60
AC current distortion THDIca < 3%
Power factor cos > 0,99 @Pac
Auxiliary power supply 3 x 400Vac +N, 230V 1f from UPS
Protection degree EN 60529 IP54
Dimensions H = 2,9m, L = 2,4m, P = 7,6 - 10,7m depending on power
Operating temperature -10 ~+40C (> 40C reduced by 1 % per C max 50C)
Altitude Up to 1000 m a.s.l. (> 1000 m reduced by 1% for each 100 m,
max 3000 m)
Relative humidity < 95% (non condensing)
User interface Back lit graphic display, 3 led, 20 keys
Low voltage EU Directive EMC 2006/95/EC
EMC Harmonized te chni cal standard: CENELEC EN 60439-1
Harmonized technical standard: CENELEC EN 50178
Conformity EU Directive EMC 2004/1 08/EC
Legislative Decree no. 194/07
Connection to CEI 016
the grid REAL DECRETO RD 1663/2000 (Spain)
Dati di uscita
Rated Rated Maximumcurrent power power
Iac Pac PMac
A KW KW
1020 477 525
1220 571 628
1530 716 787
2040 954 1050
2440 1142 1256
3060 1432 1574
Rated Ratedcurrent power
Idc Pdc PPV
A KW KW
1071 489 576
1281 585 688
1606 734 863
2142 978 1152
2562 1170 1376
3212 1468 1726
OUTPUT DATA INPUT DATA Max.recom.
PV power
CODECN8M580N25F
CN8M700N25F
CN8M860N25F
CN8M1K1N30F
CN8M1K4N30F
CN8M1K7N30F
ENCLOSURE25 feet
25 feet
35 feet
35 feet
35 feet
35 feet
SIZE500kW
600kW
800kW
1000kW
1300kW
1700kW
5% 10% 20% 30% 50% 80% 100% eta[%]
CN8M580-1K1 92,62 95,55 97,05 97,53 97,87 98,00 97,96 97,45
CN8M700-1K4 92,71 95,00 97,06 97,54 97,85 97,93 97,91 97,40
CN8M860-1K7 92,62 95,55 97,05 97,53 97,87 98,00 97,96 97,45
Efciency [%], Pdc/ Pdc_nom @ Vdc (650V) EuroANSWER DRIVES GSSTATION
ANSWE R DR IVES GS
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>> The String Box System for monitoring and identifying any faults in the strings.
> Input peak overvoltage inverter protection.
> Fuses on the positive and negative poles.
> Simplied maintenance with the output DC switch with opening under load.
Case material UV ray resistant polycarbonate
Assembly Wall mountString fuses 10A (900/1000Vdc)
Max. input current (IPV, max) 8A (>8A upon request)
String cable cross section 1,5 - 6 mm2
Maximum output cable cross section Up to 2x35 -120 mm2
Earth wire cross section 25 - 35 mm2
Anti-inversion diodes yes
Power supply 55VDC (-15%, +30%) 200mA (standard)
Output contact surge arrester intervention NC [1,5 mm2]
Output contact switch status NC [1,5 mm2]
Multi-contact MC4 connectors Standard (double - optional)
DC overvoltage protection (dischargers) yes
Protection rating IP 65
Operating temperature 25C +50C
Relative humidity From 0 to 95%
Altitude 1000 m s.l.m.
Anti theft Optional
Data communications Modbus RTU
Analogue and digital inputs 01 0V/4-20mA/PT1 00/programmable
Size
PVS 8S 08NN
PVS 8S 16NN
PVS 9S 08NN
PVS 9S 16NN
Number of strings(parallel)
8
16
8
16
PV Voltagerange
0 - 760 V
0 - 760 V
0 - 950 V
0 - 950 V
Max voltage(Ucc, max)
880 V
880 V
1000 V
1000 V
Max output current(OPV, max)
64 A
128 A
64 A
128 A
L A P
920 388 202
1523388 202
920 388 202
1523388 202
Dimensions (mm)
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>> The QPSC sub-eld parallel cabinet
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476
Nidec ASI supplies high efciency medium voltage-cast resin transformers with power
ratings up to 2 MVA. The transformers are available with one, two or three secondaries.
The secondary voltages mirror the function of the inverter output voltage: 125 V, 202 V,
270 V and 337 V *.
> Optional electronic control unit and temperature, alarm set conguration and trip display
> Contact in output for fault sensor fault signalling and congurable contact for cooling fan
control
>> Medium voltage transformers
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ENERGY METER>> For subsidized energy metering ENEL Approved
> Activite energy accuracy in compliance with
EN50470-3: class C
> Conformity to Legislative Decree no. 22
dated 02/02/2007 (Implementation of the
MID Directive)
> Indirect insertion (by way of CT and VT)
> Rated Frequency 50/60 Hz
> Auxiliary power supply (48 - 240 V DC or 57
- 415 V AC auto-ranging)
> Auxiliary and impulse inputs and outputs in
complete conguration
> Communication ports 1 RS232 + 1 RS485
> CE Marking
THE WEATHER STATION>> Don't let the weather put you off
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510
THE PORTAL WEB
>> Data anywhere
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>> Actual Case: operational statistics Name: San Vito
> City: San Vito dei Normanni
> Latitude []: 40.658
> Longitude []: 17.708
> Number of sections (= datalogger) system: 1
> Total inverters installed: 2
> Rated power installed [kWp]: 1000
> Service start date: 28/07/2010
0
1.000
2.000
3.000
4.000
5.000
6.000
7.000
8.000
9.000
10.000
1 2 3 4 5 6 7 8 9 10111213141516171819202122232425262728293031
Complete Electricity Production System
Weekly Electricity Production Graph (system)
Monthly Electricity Production Graph (system)
0
2.000
1.000
3.000
4.000
5.000
6.000
7.000
8.000
9.000
06 07 08 09 10 11 12 13 14 15 16 17 1918
INV 1 INV 2 TOTAL SYSTEM
Daily and Hourly Production Graph
0
1.000
2.000
3.000
4.000
5.000
6.000
7.000
06/03/2011 08/03/2011 10/03/2011DAY
12/03/2011 14/03/2011
ELECTRICITY
W
Complete Electricity Production System
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OUR SERVICE
>> Reliability even in the management of
your plant
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CORPORATEViale Sarca, 336I - 20126 MilanoPhone +39 02 6445 1Fax +39 02 6445 4401
CUSTOMER SERVICE AND SUPPORTViale Sarca, 336I - 20126 MilanoPhone +39 02 6445 4254Fax +39 02 6445 [email protected]
For information on the sales ofceor sales representative nearest youcontact us at: [email protected]
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DEP2013.
04.
10.
00EN