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TECHNICAL SPECIFICATION
DELPHYS Green Power 2.0
Uninterruptible power system (UPS)
RATED POWER 500 kVA – Three Phases
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CONTENTS
2 - REFERENCE STANDARDS ........................................................................................... 4
3- ABBREVIATIONS ........................................................................................................... 5
4 - GENERAL DESCRIPTION OF STATIC UNINTERRUPTIBLE POWER SUPPLY .......... 5
4.1 – General characteristics ............................................................................... 6
4.2 – 3-level IGBT rectifier .................................................................................. 7
4.3 – IGBT battery charger .................................................................................. 7
4.3 – Batteries .................................................................................................... 8
4.5 – 3-level IGBT inverter ................................................................................ 10
4.6 – Automatic bypass..................................................................................... 11
4.7 – Maintenance bypass ................................................................................. 11
5 - Conformity to standards ............................................................................................ 11
6 - CONSTRUCTIONAL SPECIFICATIONS ...................................................................... 12
6 – USER INTERFACES, controls and alerts .................................................................. 12
7 - BATTERY MONITORING ............................................................................................ 15
8 - TESTING AND INSPECTION ...................................................................................... 16
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1 - SPECIFICATION SUBJECT
This technical specification describes the system of 500kVA/500kW uninterruptible power
supply unit(s) (hereinafter called UPS)
with high double-conversion efficiency (3-level
technology rectifier and inverter) and unitary output power factor (KW = KVA).
As a technical reference, the SOCOMEC Green Power 2.0 UPS with a rated power of 500 kVA,
and modular parallel has been selected.
The UPS shall be based on IGBT technology and high frequency switching techniques, to
allow operation of applications with a particularly high crest factor.
The runtime of the accumulator banks in each UPS will not be less than 30 minutes at loads of
500 kW. Battery sizing must be submitted
The UPS must be manufactured in an EU country.
The technical specification defines:

the technical specifications of the supply and the installation procedure;

details to be indicated in the bid.
The bidder must fill out the bid in full compliance with the contents of this specification. Any
changes and/or deviations to/from the specified features must be clearly indicated in the bid;
where no deviations are declared, it shall be assumed that all the technical characteristics listed
herein are satisfied.
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2 - REFERENCE STANDARDS
Unless otherwise specified, the unit will meet to the following standards:
a)
Standard EN 62040-1 - Uninterruptible power systems (UPS) - General and safety
requirements for UPS
b) Standard EN 62040-2 - Static uninterruptible power systems (UPS) Part 2
Electromagnetic compatibility (EMC) requirements;
c)
Standard EN 62040-3 - Static uninterruptible power systems (UPS) - Methods of
specifying the performance and test requirements
d) EN 60950-1 - Information technology equipment - Safety Part 1: General requirements.
e)
Standard EN 50272-2 - Safety requirements for secondary batteries and battery
installations - Part 2: Stationary batteries;
f)
Standard EN 60896-11 Lead acid stationary accumulator batteries. General requirements
and methods of test. Part 1: Vented types.
g)
Standard EN 60896-21 - Lead acid stationary batteries, part 21: valve-regulated types Test methods;
h) Standard EN 60896-22 - Lead acid stationary batteries, part 22: valve-regulated types Requirements;
i)
Standard EN 60146-1-1 - Semiconductor converters - General requirements and line
commutated converters - Part 1-1: Specifications of basic requirements
j)
EN 60950-1 - Information technology equipment - Safety Part 1: General requirements.
k)
ISO 3746 - Acoustics - Determination of sound power levels of noise sources using sound
pressure - Survey method using an enveloping measurement surface over a reflecting
plane.
l)
Standard EN 60529-2 (Europe). Protection levels of enclosures (IP rating).
The static UPS to which this specification relates must carry the CE mark, in accordance with
European directives on safety and radio interference (2006/95/CE Low Voltage Directive and
2004/108/CE EMC).
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3- ABBREVIATIONS
To facilitate quick readability of this document, the following conventional abbreviations are
adopted (in alphabetical order):
AC
Alternating current
DC
Direct current
DSP
Digital Signal Processing
EMC
Electromagnetic compatibility
PF
Power factor
GND
Generic symbol for connection to equipotential protection and/or earth system
IEC
International Electrotechnical Commission
N
Generic symbol for connection to neutral system
4 - GENERAL DESCRIPTION OF STATIC UNINTERRUPTIBLE POWER SUPPLY
Each single UPS shall comprise the following subassemblies:
-
rectifier
-
battery charger
-
battery bank
-
inverter
-
automatic bypass
-
integrated maintenance bypass
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4.1 – General characteristics
Reference ambient conditions

Working temperature range: 0°, up to +40C

Start-up temperature: ≥10°

Maximum relative humidity: 95% at ambient temperature, without condensation
The uninterruptible power supply must meet the following essential technical specifications:
Number of parallel UPS units per system
Type of power supply (input/output)
Operation
Rated apparent power
Rated active unitary power (Pn)
Rated Input voltage
Input voltage tolerance
Input frequency and tolerance
Rated Output voltage
Output frequency
Sound pressure measured at a distance of 1 m
At least 8
3ph + N / 3ph + N
single / parallel
500kVA
500kW
400V
+20% and up to -50% at partial load
50 / 60 Hz ± 10%
380-400-415V sinusoidal
50 / 60 Hz
 72 dBA
with rated load (ISO 7779)
Classification (CEI EN 62040-3)
Total AC/AC efficiency in online double
VFI - SS - 111
Up to 95,5%
conversion mode (VFI SS-111) with PF1 load
Total AC/AC efficiency in direct mode
Up to 99%
(EcoMode option) with PF1 load
Degree of protection
Colour of metal enclosure
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IP31
RAL 7012
Frontal door :silver grey
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4.2 – 3-level IGBT rectifier
The UPS unit's rectifier shall comprise an on-load input isolating switch and must be made with
IGBT technology throughout DSP (Digital Signal Processor) control.
Technology and topology of the bridge
IGBT 3 level
rectifier
Rated voltage
Voltage
tolerance (without
400V - 3ph (without Neutral requirement)
using the
+20/-10% at 500kW
batteries)
+/-20% at 450kW
+20/-50% at 250kW
Rated frequency
42 - 65 Hz
Input power factor
Total input harmonic distortion (THDi) at
≥ 0.99
 2,5 % without active or passive filters
full load
Total input harmonic distortion (THDi) at
 4 % without active or passive filters
50% load
Soft start
100A/sec (configurable)
Active and passive filters may not be used to prevent resonance and slow protection equipment response.
The automatic restart shall be configurable (from 3 to 3600 seconds) for particular operating conditions
compatibility.
4.3 – IGBT battery charger
The system must include the battery charger:

with IGBT technology;

separate from the rectifier;

with charging voltage independent from the DC bus voltage;
The battery charger must be able to operate with the following types of accumulator:

Lead acid, hermetically sealed

Lead acid, vented

NiCad
Depending on the temperature, the battery charger shall be able to select the most suitable recharge
method automatically, without operator intervention, alternating float mode in combination with
“intermittent” charge in such a way as to limit the effects of corrosion (plate sulphation) and significantly
prolong battery life.
The maintenance charge voltage must be automatically regulated in relation to the temperature and in
regarding the battery specifications.
The battery compartment must be equipped with a temperature sensor for this purpose.
The following parameters must be adjustable and configurable:
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
maximum recharge current limit;

constant float mode current and voltage;

minimum acceptable battery voltage upon discharge and set in accordance with battery
manufacturer’s specifications;

switching threshold from fast recharge mode to maintenance mode.
The battery charge regulation and control circuit shall also provide the following functions:

continuous monitoring of the battery circuit (battery interrupted) with visual alerts on the
local user interface;

monitoring of battery efficiency, via partial discharge at settable intervals; the check consists in
continuously monitoring the discharge current and comparing it with the ideal discharge
curve;

continuous monitoring of the battery charger's output voltage to ensure it remains within the
limits required to optimize battery life. Recharging voltage anomaly alerts followed by
deactivation of the charger;

residual battery capacity display.
At the time of submitting the documentation for approval, the company will detail any
specifications differing from those requested, and such others the company may consider to be
of interest to the client.
4.3 – Batteries
The accumulator bank must have a capacity of 30 minutes at 500 kw load. Battery sizing must be
submitted
It will comprise valve-regulated lead-acid (VRLA) technology, with rated life at 20°C not less than
10 years (EUROBAT) 1
Batteries will be supplied complete with metal cabinet coordinated with the metal structure of
the UPS system as a whole:

It must comply with all European standards and directive required for CE marking;

It must be made with a metal structure able to support weight and mechanical stress during
transport;

It must be rated at least IP31 (if it has a door, it must be rated IP31 even with the door open);

The UPS must be connected to the battery enclosure via their front panels for ease of
installation, inspection and maintenance;

The battery enclosure must be equipped with suitable circuit breakers and protection
equipment which are also appropriate for the UPS to which it is connected;

The enclosure must have a RAL7012 wrinkle finish grey coating on all externally visible parts;
To simplify maintenance of the accumulator banks and access (visible and otherwise) to the circuit
breakers, protection equipment and connectors, the enclosure must be completely accessible via a door in
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its front panel
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4.5 – 3-level IGBT inverter
The inverter will be equipped with an IGBT switching circuit (PWM type) to convert the rectifier or battery
DC voltage into AC, and an output filter rated to create the output voltage envelope; It will be digitally
controlled via DSP.
The inverter will be equipped with a synchronization circuit matched to the frequency of the
power source at bypass input.
The inverter must be compatible with the following output specifications:
Inverter technology and topology
Rated output voltage
Rated frequency and tolerance
Frequency stability (in stand alone operation)
IGBT 3 level
3 x 400 V with / without Neutral
50 / 60 Hz ± 10%
50 / 60 Hz ± 0.01%
Rated apparent power specified on UPS ratings plate, in accordance
500KVA
with EN 62040-3
Rated active power specified on UPS ratings plate, in accordance with
500KW
EN 62040-3
Permanent maximized active power at 35°C - EN 62040-3
500KW
Stable voltage in static operation with input in the admitted range and
< 1% Vn
load variation from 0 to 100%
Load management without de rating in the limit of rated apparent and
Any load, from 0.1 inductive to 0.9
capacitive
active power.
Stable voltage in dynamic operation with input in the admitted range
and load variation from 0 to 100% and vice versa
Compliant with IEC/EN 62040-3
Class 1 (VFI-SS-111)
Distortion of voltage waveform at linear rated load
ThdU ≤ 1,5%
Distortion of voltage waveform with non-linear rated load as per
ThdU ≤ 3%
IEC/EN 62040-3
Phase-neutral short circuit capacity during blackouts for 100ms
1800 A
Overload capacity for 10 minutes
at least 560 kW
Overload capacity for 60 seconds
at least 750 kW
The inverter is equipped with its own output current-limiting logic, so that components are not damaged in
the event of a short-circuit.
In the case of UPS units configured in parallel, the inverter is protected by a combination of electronic
circuitry and fuses.
The system will indicate the following situations affecting the inverter:

general maximum temperature warning, with subsequent shutdown of the machine;

uncoupling of frequency generator from auxiliary power source;

tripping of power circuit fuses.
The operation of the inverter shall be managed DSP digital control, which also governs system diagnostics
and will have a communication port allowing remote management from the local area network (LAN).
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In battery mode, a stability of
 1% of the output voltage value must be maintained to the minimum
battery voltage.
The inverter must be able to automatically open the battery circuit to prevent damage in case of slow
discharge.
4.6 – Automatic bypass
A static bypass (based on thyristors) must be installed in parallel with each inverter (for both single and
parallel installations) to provide:


automatic load transfer without interruption to the standby power supply in case of :
o
overload;
o
out of tolerance inverter input DC voltage;
o
over-temperature;
o
inverter fault;
automatic transfer from standby circuit to inverter when normal conditions are restored, and
verification of the inverter parameters.
Transfer time with inverter synchronous with bypass
No interruption
Maximum overload at 25°C:

permanent
110%

for 10 minutes
125%

for 1 minutes
150%
Short-circuit capability at 400V (without semiconductor damage)
at least 14xIn / 20ms
The UPS must continuously monitor the standby power supply parameters (voltage and frequency) and
the current passing through the static switch.
4.7 – Maintenance bypass
For single unit or 1+1 UPS systems, the manual bypass switch will be provided internally and must ensure
that equipment downstream of the UPS is supplied directly by the UPS upstream power source when
rectifier, inverter and static switches are open. Switching to the manual bypass and back will be possible
without load supply interruption.
5 - Conformity to standards
The system must conform to the following standards:

Safety: EN62040-1.

EMC emissions: EN62040-2 class C3.

EMC immunity: EN62040-2 class C2 and C3.

Test and performances: EN62040-3
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6 - CONSTRUCTIONAL SPECIFICATIONS
All items of equipment must be assembled in one or more modular cabinets, manufactured to the following specifications:
 Enclosure in steel sheet assembled (without welding) with tri-lobe thread forming screws for improved reliability and
vibration resistance.
 Colour RAL 7012 grey with wrinkle finish, polyester epoxy powder coating fro its excellent mechanical characteristics,
resistance to chemical agents and aging;
 All electronics and connections must be accessible from the front panel for ease of installation, inspection and
maintenance.
 The enclosures shall in any event provide a level of protection not less than IP20.
 The enclosure must be able to bear the loads to which it is subject during shipping, as well as vibration, impact and
dropping;
6 – USER INTERFACES, controls and alerts
User interface
The user interface on the UPS must be composed of a color graphic display as follows:
 Minimum size 3.5" with high definition (at least 320x240 pixels);
 High visibility screen;
 Reinforced protection against accidental impact.
The interface must provide the following controls/alerts:
 synoptic electrical diagram of the UPS;
 selectable languages: at least 30, including English, French, Italian, Spanish, German, Swedish, Polish,
Russian and Chinese, with localized installation.
 There must be a USB port for updating the languages and downloading the event/alerts log.
 Display of the following parameters:

input and output voltages;

input and output currents;

input, output frequency;

battery voltage and charge / discharge current;

total and remaining battery capacity;

battery apparent and active power (per phase and global);

output load rate (per phase and global);

ambient and battery temperature (room or cabinet)
 Statistics

Running time on inverter / bypass / gen-set / battery.

number of Input supply absence

number of overloads

number of battery discharges
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Alerts via terminal block contacts
The system will also enable remote indication of the following status or alarm information via the terminal
block contacts:

general alert;

normal mains operation;

battery operation;

bypass mode;

battery draining;

low battery charge;

over-heating;

overload / loss of redundancy.
The following input commands must be remotely controllable via the terminal block:

external emergency power off with the following functions:
o
stop the UPS;
o
open the static bypass;
o
disconnect the logic and batteries;

handle external alerts;

power from GenSet.
Remote Communications
The UPS will be able to communicate with the central control system via:

a programmable data I/O card with at least 7 voltage-free contacts for input data (at least 3
contacts) and output data (at least 4 contacts);

at least 3 serial communication ports, including one RS232, one RS485 and one Ethernet;

the following communication protocols must be supported:

o
SNMP;
o
MODBUS over TCP/IP;
o
HTTP;
o
SMTP;
o
PROFIBUS;
The system must be able to send SMS's over a GSM modem, to report particularly important
alerts and events.
The configuration must be settable via the HTML interface.
Remote serial alerts and commands
The interface must be able to display at least the following status or event information:
 general alert;
 battery mode with mains supply / no mains supply;
 normal operation (inverter in-line);
 static bypass operation;
 residual capacity in battery mode;
 battery low charge warning;
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 battery on fast charge;
 abnormal battery recharge voltage;
 minimum battery voltage;
 battery fault;
 battery charge circuit broken;
 battery charger system fault;
 overload alert;
 ventilation fault alert;
 out of range temperature/humidity alert;
 standby power supply out of tolerance;
A predictive/statistical algorithm and interpretation of logged data (number, duration and type of events)
regarding:

out of tolerance Input voltages;

overloads;

battery mode operation;

switching to standby power supply;

over-temperatures.
The UPS must predict potential criticalities for the UPS itself, due to ambient conditions, in advance and
alert the maintenance service / monitoring system.
Other requirements:

silenceable acoustic alarm;

second remote sensor to monitor the enclosure/battery room/other room temperature and
humidity;

lamp test circuit to verify the system's operation.
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Diagnostics
The system will be equipped with a microprocessor able to run full machine diagnostics to determine:

self-compensation of components to ensure stable settings over time;

acquisition of the main diagnostic and monitoring information by computer (local or remote);

first installation procedure wizard;

full test procedure at full load on UPS, with no further external loads (auto-charge mode)
o
rectifier;
o
inverter;
o
bypass;
o
power bus;
o
cables, contactors and fuses;
The Manufacturer must also supply 24h remote monitoring and maintenance.
7 - BATTERY MONITORING
A monitoring system is to be provided such as will ensure permanent overall supervision of the
main battery parameters and regulate the charge voltage on the basis of:
-
power usage parameters
-
operating temperature
-
battery type
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8 - TESTING AND INSPECTION
The Client reserves the right to run service trials in the manufacturing plant of the UPS to be supplied, in accordance with the
lists listed in CEI EN 62040-3.
The Client must be informed of the date of the trials at least thirty days in advance.
The tests, run by the company at their own expense, with a representative of the client in attendance, includes the following
steps:

documentation check

design, fabrication and installation check

interconnections

instrumentation check

options description

description of synoptic panel

rectifier static performance

battery and charger performance

inverter static regulation

inverter overload (with resistive load)

inverter dynamic regulation

bypass transfer test
All tests must be conducted with appropriate instrumentation with valid calibration certificates.
Following a positive outcome of the testing procedure, the manufacturer will issue the relative certificate listing the tests
conducted and the results obtained.
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