REPLACEMENT_OF_MEDIUM_VOLTAGE_GEAR_SOW_BID.pdf

Embassy of The United States of America

Milano, Italy

AMERICAN CONSULATE GENERAL MILAN, ITALY

REPLACEMENT OF MEDIUM VOLTAGE GEAR

Facility Engineering Office

19/04/2017

CHAPTER 1

FOREWORDS

The Embassy of the United States in Rome needs to award a contract for the replacement of the medium voltage gear and associated low voltage panels, in the American Consulate General Milan on Largo Donegani, Milan, Italy.

The contractors are to quote the labor and materials needed for the project and for the ancillary work needed to accomplish the installation task as per this SOW and relevant drawings.

The contract shall be awarded as a "Lump Sum".

CHAPTER 2

GENERAL

The premises where this project is taking place is an office building with multiple tenants, on Largo Donegani, Milan, Italy.

The contractor shall supply all the installation materials and equipment, skilled and unskilled labor, technical supervision, as well as logistic and administrative support. The contractor shall also supply all accessory services such as: submission of shop drawings, samples and catalog cuts of all equipment and items, transportation, leasing, equipment and tools, disposal of debris, cleaning the work area and anything else necessary to complete the project in compliance with the present specifications.

Maximum attention is required for the safety of personnel at work on the site. The workers shall operate in compliance with standard codes. In view of the fact that the work site consists of crucial technical installations, temporary safety protection measures towards third parties and workers shall be installed with care and attention, especially for the hours when the work site is closed.

Special attention must be dedicated to the multiple power interruptions required by the project. The contractor shall implement any measure and activity to reduce the number and duration of such power outages.

Therefore, the contractor construction schedule must ensure the safe work environment while reducing to the minimum the number and duration of power outages.

The Contractor shall be responsible for submitting, for approval by the COR, samples of materials and supplies to be used and detailed shop drawings.

It shall be the contractor’s responsibility to verify all the quantities.

It shall be the contractor's responsibility to return the areas and the surfaces in the same conditions as before the work.

Art. 2.1

DEFINITIONS

A glossary of terms and relative equivalents used in the drawing up of the tender documents are indicated hereunder:

Client, Administration, Project Supervisor, COR, CO: all these denominations identify the technical administrative staff, predisposed to handle the contract on behalf of the Embassy of the United States of America.

Contracting Company, Contractor: all these denominations identify the subject that undertakes to carry out the work described in the contract.

Contract, Purchase Order (P.O.), Work Order: these terms identify the contract document with which the project is awarded. The Client at his indisputable judgment shall make the formal selection of the different types of documents.

Art. 2.2

DESCRIPTION OF WORK

The work for the replacement of the MV gear and associated low voltage equipment requires that temporary electrical connections are made at the beginning of the project to maintain the Consulate operational.

These pre-requisite activity is described at the end of this chapter.

Art. 2.2.1 EXISTING CONDITIONS

The US Consulate General Milan, Italy, has a following electrical configuration:

A 24 kV panel in the demarcation room where there is the incoming feeder of the local utility (ENEL). The panel is provided with one Main Circuit Breaker (DG under local codes) equipped with relays in compliance with local code CEI 0-16, which values are as follows:

Max current relay (51) set at 5 Amps 1.3 s, characteristics B Max current relay (50) set at 500 Amps, 0.05 s, Max omopolar current (51N) set at 2 Amps, 0.4 s Max omopolar current (51N) set at 50 Amps 0.1 s

From the demarcation room a 24kV cable connect a transformer protection panel inside the transformer room, with the following equipment.

Two 24 kV circuit breakers, obsolete, which serve as the primary voltage disconnecting means and protective device for 24 kV current.

Two 400 KVA transformers, 400/230V, 50Hz, oil filled, which step down the voltage from 24 kV to 400 volt utilization voltage. It was recently discovered that both had failed due to failure of oil tanks. All oil leaked from one unit, partial loss of oil from second. These two transformers are the emergency. One has been refilled and is now feeding the facility.

Second is de-energized, risk of refilling and re-energizing is unknown. Oil serves as the insulating and cooling medium for these transformers.

One double ended secondary switchboard, MDP- near end of useful life. Operable by qualified personnel with special procedures. Not maintainable into future. These contain the main disconnecting means for 400 volt power to building as well as providing short circuit and overcurrent protection at 400 volt level. Also in these assemblies there are smaller circuit breakers which allow feeders of smaller ampere rating to branch off and serve circuits to various functions within building.

The building load is low enough to permit that one of the primary circuit breaker and one transformer carry the entire building.

Main circuit breakers are obsolete but still nominally operable (limited operation).Some parts are missing. MDP is operable by qualified persons only and observing additional safety precautions.

An energy Metering system is installed on the wall behind the existing LV MDP. The current transformers (CT) are installed on the two transformer's feeders. This system is to be retained and CT's to be reinstalled on the new feeders.

Two areas in the same building, the MSGQ and the FCS office, have independent power deliveries at low voltage with a 4 wire circuit: 2 deliveries for the MSGQ and one for FCS.

Art. 2.2.2 NEW WORK

New work consists in the removal and disposal of all MV panel in the transformer room, including the two transformers and the MV cables and the one from the demarcation room.

Removal and disposal of the existing Low Voltage MDP in the transformer room after the temporary installation.

Minor civil work to achieve the new substation layout, such as floor trenching, painting etc.

Supply and installation of new cable trays.

Replacement of the MV cable from the demarcation room to the transformer room, as shown in the single line diagram, drawing E-101

Supply and installation of a new MV gear rated at 24 kV made of a main disconnect and two circuit breakers for the protection of the new transformers per drawing E-101 NEW MV SWITCHGEAR panel. NOTE: access to the transformer room from the garage area is possible through a doorway 85 cm in size. Therefore the prefabricated panel must be delivered in pieces assembled on site.

Supply and installation of No. 2 new transformers, dry type, resin insulated, fire rated F1 or F2, each one having the following characteristics:

Nominal power 250 kVA Primary voltage 20 kV Secondary voltage 400 V Primary connection LLL/IT Secondary connection LLLN/TNS Vcc 4% circa to grant a Max short circuit current on the low voltage MDP busbars not to exceed 20kA Transformers must be able to be operated in parallel.

Transformers must comply with the EU EN 50588-1 code for the reduction in energy consumption and as a consequence a reduction in greenhouse emissions.

Supply and install No. 2 metal case for the transformer containment, provided with door and ventilation openings.

Transformers data shall be reported also on the exterior of the metal case.

Supply and install a set of interlocking keys for the safe operation of circuit breakers and panel doors.

Supply and installation of a remote panel in Post One indicating the status of the City line, Generator line, ATS status and MV switch position

Supply and installation of the new Low Voltage MDP panel inside the transformer room per drawing E-101 LV-MDP.

Disconnect the current transformers of the Meternet system currently installed in the Low Voltage MDP and reinstall them in the new Low Voltage MDP.

Supply and installation of all new low voltage cables for the connection of the new system to the existing one. All cables shall be single or multi core as per drawing E201, insulated in rubber quality G7 (cable temperature at the end of the short circuit not exceeding 90° C) with low emission of toxic or opaque fumes in case of a fire.

Connection of the new LV MDP to the existing ATS that is retained into service.

Supply and installation of a new Emergency Panel inside the generator room that will feed the existing loads in the existing emergency panel and the OTHER LOADS in the transformer room.

Supply and installation of the OTHER LOADS panel inside the transformer room, connecting the relevant loads.

Supply and installation of an uninterruptible panel fed from the "Other Loads" panel in the transformer room by an UPS 3kVA, 230V. Autonomy 10 minutes.

Supply and install the cables to feed the Marine MSGQ (2 separate power deliveries) and the FCS office from the new Emergency panel, thus eliminating the three independent power deliveries.

Grounding. The transformer room is already equipped with a grounding mesh installed under the floor tiles and providing the protection against dangerous voltage in the floor in case of a phase to ground short circuit. (Tensione di passo). The contractor shall connect a new copper main grounding bar exposed on the wall of the transformer room, to which all grounding conductor shall be connected.

This main grounding bar is where there will be the neutral and grounding bonding for the entire building.

The main ground bar shall be connected to the grounding mesh with a list 3 ties coming from different position in the room.

All cables shall be terminated with the proper termination and with a visible PVC label marked with waterproof ink.

Supply and installation of safety devices (insulated floor mattress, insulated gloves etc.)

and for the framing and installation of the new single line diagram in the substation room.

Ancillary work items shall be performed for the supply and installation of the new lighting in the demarcation, transformer and generator rooms, as shown in drawings E-201,202,203, and for the ventilation and air conditioning of the transformer room per drawing M101.

Art. 2.2.3 TEMPORARY CONNECTIONS

To grant that the consulate remains fed during the replacement of the medium voltage gear, the contractor shall implement any measure for ensuring temporary connections that shall be, but shall not be limited to, the measures shown in the drawing E-201.

Referring to the E-201 drawing, the contractor shall install one transformer and one protection box in the demarcation room, using the existing MV cable for the connection of the primary side, and supplying and installing new cables for the temporary feeding of the existing low voltage MDP in the transformer room.

Once the new low voltage panels have been installed in the final position there will be some selective power outages to move each circuit from the existing MDP to the new panels.

Any power outage shall be scheduled at least 5 working days in advance. Contractor must wait for written approval from the COR.

As a general rule, short power interruptions involving only one floor or one area, can be executed during working days but after hours, while more extensive outage must be scheduled during American holidays preferably, or during Saturdays.

In any case the contractor shall prepare in advance emergency lights for a safe execution of the work

Art. 2.2.4 LIGHTING

New lighting fixtures shall be installed in both MV-LV substation room and demarcation room.

New lights shall be LED type, 2 lamps per fixture, 48W, 8060 lumen, 4000K, IP66IK08.

The new lighting shall grant a perpendicular luminance (lux) of at least 500 lux on the working plane (0.9 m) and a perpendicular luminance of at least 200 lux on the transformers and the MV and LV panels.

The installation pattern is shown on the drawing E-301.

Art. 2.2.5 VENTILATION AND AIR CONDITIONING

The transformer room shall be ventilated to maintain the temperature below 40° C with a maximum external air temperature of 32° C. If the external air temperature is higher than the ventilation shall stop automatically and an air conditioner will provide for fresh air. The ventilation system shall restart upon external air temperature drops below 28° C.

Equipment and ducts shall be installed as per drawing M101.

SUPPLY AHU:

Supply fan shall be plug fan type and shall be equipped with an inverter. RPM shall be manually settable.

Supply fan shall be equipped with a prefilter G4 and a high efficiency bag filter F8. The air flow supplied to the MV-LV substation shall be of 3850 m3/h with a total available pressure of 106 Pascal.

A duct temperature probe shall be installed near the outdoor air intake grille.

EXTRACTION AHU:

Extraction fan shall be plug fan type and shall be equippws with an inverter. RPM shall be manually settable.

Extraction fan shall be equipped with a high efficiency synthetic fiber flat filter M6. The air flow extracted from the MV-LV substation shall be of 3500 m3/h with a total available pressure of 190 Pascal.

For both AHUs an alarm must be installed that activates when the pressure drop on the filtering section overcomes the set threshold.

MULTISPLIT UNIT:

A multisplit system serving as a backup shall be installed. The system shall be composed of 1 external unit with a cooling capacity of 10 kW and of 2 internal units with a cooling capacity of 5 kW.

The system must use R410A refrigerant gas.

CONTROLS:

A control system shall be developed so that when outdoor air temperature is higher than 32 Celsius, both supply and extraction fan must stop and the split unit must start.

If outdoor air temperature is equal or lower than 28 Celsius, the split unit must stop and both extraction and supply fan shall restart.

Outdoor air temperature shall be taken from the duct temperature probe installed near the outdoor air intake grille.

DUCTS:

Ducts shall be made of galvanized sheet metal.

AIR DIFFUSERS:

Outdoor air: 1 grille 800x400 Supply: 4 grilles 500x150 Exhaust: 1 grille 1000x300 Extraction: 1 grille 1200x400

Art. 2.3

SAFETY

Safety is the highest priority on this and all OBO/OM/FAC/PS projects. The contractor shall direct all of those under his charge to work safely. Regular safety meetings shall be held among on-site contractor personnel, and safety concerns shall immediately be brought to the attention of the Post Safety and Health Officer (POSHO) and the COR.

Art. 2.4

LIMITATIONS

The accomplishment of the project shall be circumscribed to the specific requests described in the Tender Documents.

Art. 2.5

MATERIAL EQUIVALENTS

The contractor shall verify and ensure that all the materials supplied are new and without defects and that their use and/or installation is carried out using the best techniques and fully respecting the instructions supplied by the manufacturers.

Special parts shall be manufactured solely by workshops that are highly qualified in that specific sector.

The makes indicated in this SOW (Scope of Work) are intended as a point of reference and therefore, the words or approved equivalent are implicit.

Therefore, the makes and products listed are to be deemed equivalent to each other.

Different selections implemented by the Contractor shall be approved in advance by the COR, after submission of samples and technical cards.

MV and LV PANELS

ABB

TRANSFORERS

ABB

TESAR

MULTI SPLIT SYSTEM

INDOOR UNITS

FUJITSU

Model: ASHG18LFCA

OUTDOOR UNIT

FUJITSU

Model: AOHG36LBLA5

AHUs

SABIANA

Model: VULCAN PRO 175-100

LIGHTING

DISANO

Model: 927 48W CLD CELL

Art. 2.6

TENDER DOCUMENTS

The following documents shall form an integral part of the contract:

The present Special Tender Document General Conditions in use by the Client The drawings E-101, E-102, E-201,E-202, E-203, E-301, M-101 The document Bill of Quantity

Art. 2.7

CONSTRUCTION DOCUMENTS SUBMITTAL

Contractor shall submit shop drawings and catalogue cuts for the transformers, MV switchgear, power cables, LV switchgear and all switchboard components such as but not limited to circuit breakers, lockout relays, control switches, time delay and digital meters.

These shop drawings shall be marked (FOR CONSTRUCTION).

The COR shall provide comments for submittal within five business days from receiving the submittals.

The construction documents shall include, but shall not be limited to:

The drawings (Deliverable) shall include but not limited to the following:

Cover sheet.a.

Symbols and abbreviation list.b.

Proposed one line diagram that will show new and existing to remainc.

equipment, such as: transformers, ATS, switchboards, generator, MV switchgear, cable and conduit sizes and runs.

All demolition drawings.d.

Front elevation of the switchgears- MV and LV.e.

Ensure that the proposed installation meets all required clearances, and that any equipment that must be relocated to maintain a safe and properly functioning working environment is done.

CHAPTER 3

SOLICITATION CHARACTERISTICS

Art. 3.1

CONTRACT PHASE

Within 10 calendar days of the date of award, the Contractor shall submit the following documentation to the Embassy’s Technical Office:

A final and detailed work cost loaded schedule of the various interventions and relative length of time required to carry out all the work requested in the contract. The schedule must indicate the date and duration of the projected power outages.

A list of the names, complete with bio-data, of all the employees, as well as possible suppliers and sub-contractors for specific work, who will require access to the work-site. Furthermore, the contractor shall submit a complete list of vehicles to be used during the project, indicating the make, model and license number.

Designation of someone who will be in charge of the project on behalf of the contractor (site superintendent) and who will be fully authorized to discuss and decide together with the COR any variations during the course of the project, both concerning methodology of the work and the supplies.

Designation of a safety manager that will address all safety issues and will monitor the daily operations.

Art. 3.2

IMPLEMENTATION PHASE

The implementation phase starts with the Limited Notice to Proceed (LNTP), so that the contractor is authorized to commence work under this SOW.

Preparatory work only shall be performed before the submission of the shop drawings and relevant approval.

No materials shall be installed prior the relevant submission and approval.

Once the shop drawings have been approved the contractor shall be given the Notice to Proceed (NTP)

Normal working hours are from 08:00-08:30 to 16:30-17:00 during weekdays. Any work to be carried out after normal working hours or during the week-end shall be agreed upon in advance with the COR in order to obtain all the necessary authorizations and approvals.

The work-site shall be kept as clean as possible.

Areas for storing material shall be agreed upon, together with the COR, based on logistical-operative criteria.

Any temporary interruptions of utilities shall be scheduled at least 5 days in advance and shall be subject to approval from the COR. Power outages shall be scheduled preferably during American holiday or Saturdays. Short duration outages can be scheduled after close of business (COB) during weekdays.

Tests on the correct operation of the systems and consignment of parts of completed work shall be carried out in the presence of the person designated by the contractor and someone authorized by the Embassy. The contractor shall be responsible for drawing up the necessary delivery reports for the work and systems carried out and shall be subject to verification and acceptance by the COR.

Art. 3.3

CONCLUSION PHASE

Once the project is completed a final inspection shall be carried out with representatives of the contractor and the Embassy, in order to verify that the project has been carried out correctly, that it is in compliance with the technical specifications and that the systems operate correctly.

When the work has been completed and accepted by the Embassy, the contractor shall submit the following documents to the Embassy’s Technical Office:

detailed “as-built” drawings showing the new constructions, both the architectural/structural aspects as well as all the systems. The drawings shall be submitted on paper and software in ".dwg" format.

technical cards of the most important materials used in the project, with a list indicating the location of the vendors and local suppliers.

certification of conformity and tests carried out by the manufacturers for materials, as well as guarantee of the correct installation of all the materials by the contractor with regard to the project realization and law requirements.

instructions of the embassy personnel.

Art. 3.3.1 COMMISSIONING

The new switchgear, switchboard and Transformers shall be commissioned using factory-recommended procedures. A report shall be provided after installation detailing commissioning procedures followed.

During the commissioning, the contractor shall demonstrate to post personnel and COR that all circuit breaker are operating properly. This demonstration is to take place prior to reconnecting the load to the new switchboard to eliminate the need for power outages request from Post for trouble shooting purposes.

All trip functions of the electronic trip units of all circuit breakers in the switchboard shall be tested on site and results shall be tabulated on test forms to be provided by OBO.

Contractor is to acquire a test set to test the trip functions of the electronic trip from the manufacturer and leave it at Post for future use. Testing is to be accomplished via secondary injection method.

Art. 3.3.2 SPARE PARTS

Provide the "Recommended Manufacturer Electrical and Mechanical List for two years of operation" spare parts to the Consulate Facility Manager before final completion.

The spare parts shall be passed to the Consulate with a detailed list of all components included.

Art. 3.4

PERFORMANCE TIME AND PENALTIES FOR DELAYS

The contract performance time and the methods with which these times will be calculated are the following:

All periods of time shall take effect from the "Limited Notice to Proceed", a written communication from the Embassy to the Contractor informing him of the project award.

Period of time to organize the work site, select material and analyze alternatives, submittal of shop drawings, etc. :30 solar days with effect from the "Limited Notice to Proceed".

At this point the contractor is given the Notice to Proceed (NTP)

Period of time for the complete execution of the project, 60 solar days from the preceding phase, that is, 90 days from the "Notice to Proceed".

Penalties for delays in completing the project are those described in the tender documents.

Art. 3.5

WORK PROGRESS

In general, the Contractor shall have the faculty of developing the work in the way he believes more convenient and shall hand it over completed within the terms of the contract, as long as, in the opinion of the COR, this is not detrimental to the outcome of the project and the interests of the Administration.

The Administration reserves the right to request that a specific task be carried out within a pre-determined period of time, or to dispose the order of the performance of the work in the way it deems more convenient, especially in relation to requirements depending on the performance of work and delivery of supplies excluded from the contract, without the Contractor having the possibility to refuse or ask for special compensation.

Before starting the work, the Contractor shall submit for the CORs approval a detailed operative cost loaded schedule, which he will follow during the performance of the contract.

Art. 3.6

PARKING

Little to none parking spaces are available at the consulate. The contractor shall be requested to leave only one vehicle in the premises for loading and uploading operations.

Other vehicles shall be parked outside the premises at contractor's care and expenses.

CHAPTER 4

SPECIFICATIONS

Art. 4.1

SCHEDULE AND POWER OUTAGES

The contractor shall ensure that the project is carried out with minimal power outages and disruptions to the consulate activity.

To this end, the work plan the contractor proposes shall include but shall not be limited to, the following stages:

After the pre-construction conference a Limited Notice to Proceed (LNTP)shall be issued to allow the contractor to begin working under this contract to have the needed survey, identify and submit the material samples and to order the long lead items.

During this time the contractor is authorized to perform any preparatory work he deems appropriate without affecting the power supply of the consulate.

30 calendar days after the LNTP, and after all submittals, a Full Notice to Proceed (FNTP) shall be issued and the contractor shall complete all works within 60 calendar days from the FNTP.

The construction shall be carried out in stages as follows:

A temporary transformer shall be placed inside the demarcation room with it1.

protective shelter.

Temporary low voltage cables shall be installed between the demarcation room2.

and the transformer room. Cables shall be already connected to the low voltage side of the transformer and shall be ready for the connection to the existing MDP.

3. With the first power outage that shall last not more than 4 hours, the existing MV cable shall be pulled back, cut and terminated to be connected to the temporary transformer. In the meantime, the temporary low voltage cable shall be connected to the existing MDP.

4. The existing MV gear and transformers shall be dismantled and disposed. The new installation shall start with the installation of the new electric MV and LV panels, the air conditioning and ventilation inside the transformer room.

Since the generator room is a controlled access area and the contractor shall be5.

escorted for all the time he works inside the room, the contractor's schedule shall indicate precisely, the schedule for the work to be performed.

6. Work proceeds without any other power outage until the new MV gear and the new LV panels are ready to be put into service. At that point and time, a second power outage not to exceed 4 hours shall occur, to energize the new MV system and the new LV-MDP. Also the New Emergency panel and the Existing Emergency panel shall be connected under the new feeder.

7. The contractor shall schedule some short duration power outages for the transferring of circuits that are connected under the existing MDP to the New Emergency panel.

Completion of ancillary tasks as per contract.8.

Art. 4.2

TRANSFORMERS

Description TECHNICAL DATA Manufacturer ABB Product name Dry Type CAST-COIL Application LV distribution Rated power [kVA] 630 Primary voltage [V] 20000 Secondary voltage [V] 400 Primary tappings ±2.5%, ±5% Primary insulation level [kV] LI 125 / AC 50 / Um 24 Secondary insulation level [kV] LI - / AC 3 / Um 1.1 Frequency [Hz] 50 Number of poles: 3 Vector Group Dyn11 Winding MV & LV position High / High Ambient Temp. max °C 40 Max average Temp. Rise [K/K] 100 / 100 Climatic; Environmental; Fire class Climatic; Environmental; Fire class E2, C2, F1 Material class (MV/LV) F / F Operation Height (s.l.m.) [m] <1000 Installation Indoor Guaranteed values Standards IEC 60076; EN 50541-1: UE 548-2014 Impedance cto/cto [%] 6 (±10%) No Load Losses, Po [W] 520 Load Losses at, Pk a 75 °C [W] 3350 Load Losses at, Pk a 120 °C [W] 3800 Sound Power level (Lwa) [dB] 70 Preliminary Values (IP00) Length (Approx.) [mm] 1590 Width (Approx.) [mm] 900 Height (Approx.) [mm] 1520 Axis wheels (Approx.) [mm] 670 Approx Weight [kg] 1910 Design Cooling AN Primary winding material Al Secondary winding material Al Winding manufacturing (MV/LV) Encapsulated/Impregnated Standard Accessories

n. 2 Earthing terminals

n. 1 Digital Temperature Device

n. 3 PT100 sensors

n. 1 Rating Plate Bi-directional Wheels Off Load Tap changer at MV; 5 position Pt100 Terminal Blocks Transport Lugs Technical documentation (Italian & English)

1.1 General Data / Type of apparatus

Air insulated MV switchgear for secondary distribution type UniSec

• Type: Complete switchgear

• Application: Standard IEC 62271-200

• Additional technical requests:

• Degree of protection: IP3X

• Internal Arc Classification (IAC): Front and Lateral Accessibility (AFL) mounted against the wall ATTENTION: IAC A-FL version - No access to Rear side of the Swg while is in service. Installation distances to be respected.

• Type of apparatus: Switch disconnector type SF6, Circuit breaker type Vacuum

• Packing: Domestic

• Ambient temperature (Mim/Max): -5°C /40°C

• Storage temperature: -5°C

• Altitude: ≤1000 m

1.2 Electrical Data

• Rated voltage: 24kV

• Service voltage: 20kV

• Power frequency withstand voltage: 50kV

• BIL: 125kV

• Rated frequency: 50Hz

• Rated busbar current: 630A

• Rated short circuit current: 16kA

• Rated short circuit current duration: 1s

• Peak current: 40kA

• Arc test current 1s (According to IEC 62271-200): 12.5 kA

1.3 Additional Data

• Internal lighting Yes

• Anti Condensation heater of self-regulating type Yes, in cable compartment

• Arc gas relief system Relief inside switchgear room mounted against the wall (Ultralight)

• Voltage presence indicating system Fixed lamps, type VPIS

• Type of key locks interlocking (if selected in functional units) Giussani

• Address labels on functional units Yes

• Mimic diagrams Yes

• Routine test reports Yes

• Our ABB standard drawing template Yes

• Switchgear color RAL 7035

Art. 4.3

MEDIUM VOLTAGE PANEL AND CIRCUIT BREAKER

1.4 Auxiliary supply and wiring data

• Local control voltage: 230VAC

• Spring charging motor voltage for CB: 230VAC

• Control circuits cross section 1mm

• Voltage circuits cross section 1.5mm

• Current circuits cross section 4mm

• Earthing circuits cross section 2.5mm

• Interconnection circuits cross section 2.5mm

• Auxiliary Supply circuits cross section 4mm

• Wiring cable type Standard, PVC

• Wiring cable rated voltage ABB standard

• Wiring cable colors STANDARD

• Color of Auxiliary AC Black

• Color of Auxiliary DC Black

• Color of CT circuits Black

• Color of VT circuits Black

• Color of Earthing circuits Yellow/Green

1.5 Control and Communication

1.6 Switchgear Accessories

1 Operating handle for switch disconnector 1 Lifting hooks

No accessories

1.7 Switchgear Composition: MV-SWITCHGEAR

Overall dimensions(*)

Description Qty Weight (Kg)

Width (mm)

Depth (mm)

Height(mm)

SDC=INCOMING (630 A)

H01

1 293 500 1330 2000

HBC=TRANSF.1 (630 A)

H02, H03

2 365 500 1330 2000

Sidewalls 54

1073 1500 1330 2000

(*)Dimensions calculate panel + accessories, lv box, IAC protection, …. For additional details, please refers to UniSec catalogue.

2 Typical Unit Description

2.1 Panel: SDC=INCOMING

(630 A, 1: H01)

1 Panel type SDC, LSC2 - Switch disconnector unit - 500 mm 1 Cable entry for 1-phase cables up to 300 mm2 (Single core) 1 Voltage presence indicator with fixed lamps type VPIS 1 Internal light 1 Anti condensation heater for cable compartment 230VAC 1 Arc filter 500 mm 1 Upper cover for AFL 500mm mounted against the wall 1 Installation and operating manual in Italian

1 GSec - Three position switch-disconnector and with earthing switch and 2-spring operating device 1 Tripping coil for opening 230 VAC 1 Auxiliary contacts for switch-disconnector closed 1 Auxiliary contacts for earthing switch

- Set of 4 pcs change-over

- Set of 4 pcs change-over

1 ABB standard line key locks open 1 ABB standard earth key locks closed / opened (2 locks for earthing)

1 Wide low voltage compartment for 500 mm functional unit 1 Necessary auxiliary circuit and MCBs are automatically included as per factory stds according panel configuration/selections.

2.2 Panel: HBC=TRANSF.1

(630 A, 2: H02, H03)

1 Panel type HBC, LSC2 - Circuit-breaker with switch-disconnector integrated - 500 mm 1 Cable entry for 1-phase cables up to 300 mm2 (Single core) 1 Anti condensation heater for cable compartment 230VAC 1 Internal light 1 Arc filter 500 mm 1 Upper cover for AFL 500mm mounted against the wall

1 ABB standard key locks for line open / closed free 1 ABB standard earth key locks closed / opened (2 locks for earthing)

1 Wide low voltage compartment for 500 mm functional unit 1 Necessary auxiliary circuit and MCBs are automatically included as per factory stds according panel configuration/selections.

1 Selector switch for remote control and push buttons on lv door

1 Multifuctionality apparatus, type HySec (vacuum) 24kV, 630A, 16kA 1 Closing push button

Opening push button Mechanical signaling device for closing springs Mechanical signaling device for circuit breaker Operation counter Shunt opening release 230 VAC Shunt closing release 230 VAC Spring charging motor 230 VAC Set of 6 open / closed auxiliary contacts Lock push buttons Cover for open/close push buttons Auxiliary contacts for switch-disconnector closed

- Set of 4 pcs change-over 1 Auxiliary contacts for earthing switch

- Set of 4 pcs change-over 1 Electrical indication for charged spring 1 Voltage presence indicator system

1 T110P SIPIE Earth Fault Ring current transformer 110mm 50/1A 1VA cl.3 (neutral, Ip=50 A, Polarity: P1 on busbar side) 1 Core1 : Is=1A; 1VA; 3; fs

Frequency: 50Hz

1 REF601 - Feeder protection relay

UniSec

M

Relay

This technical specification is intended to define the basic requirements for enclosures’ supply project in kit for the low voltage main distribution.

The enclosures will consist of independent and modular compartments segregable into cubicles, in order to be extendable from both sides.

1. KEY FEATURES OF THE ENCLOSURE

- Rated insulation voltage Ui : up to 1000V AC/1500V DC

- Rated operational voltage Ue : up to 1000V AC/1500V DC

- Rated impulse withstand voltage Uimp : 12kV

- Rated frequency : 50/60Hz

- Rated short-time withstand current Icw : up to 120 kA

- Rated peak withstand current Ipk : up to 264 kA

- Rated current In : up to 6300A

- Ingoing access : from above and from below

- Outgoing access : from above and from below

- Installation : internal

- Segregation Form : up to 4b

- IP degree of protection :IP30,IP31,IP40,IP41,IP65

- IK mechanical resistance :IK09-IK10

2. RULES AND REQUIREMENTS

- Enclosure IEC 61439-2-1 / IEC 60439-1 Standard

- Degree of protection IEC 60529 Standard

There will also be compliance with the rules and regulations laid down by Italian legislation for the prevention of accidents and the EU Directives.

Art. 4.4

LOW VOLTAGE PANEL

3. CONSTRUCTION FEATURES

For construction features are hereby intended the structural characteristics, the mechanical protection, the segregation, the accessibility of the equipment, the safety features and the realization of the electrical connections inside the enclosure.

3.1 Metal structure

The enclosure should be composed of several vertical modules called panels, joined together by means of bolts. In this way, by means of lifting eyebolts and lifting brackets, it will be possible to transport sections of the enclosure and not just the individual panels. The socket must be designed for handling with transpallet.

Each panel must have a crushproof metal frame provided with holes for fastening with 25mm pitch.

The structure must be made of metal including side and top covers.

The closing panels have to be equipped with one or more grids in order to allow the ventilation cycle according to the degree of protection of the enclosure.

The front/rear closings have to be suitable for the hinging and the assembling of opening / closing handles; in case of limited space on the front/rear, bolted panels should be available without handles.

The degree of protection must be adequate to different environmental conditions of the plant; the minimum IP protection degree should be IP30, reachable with closed doors or with front panels and finishing profiles with open doors.

The enclosure should provide for the possibility of being extended on both sides and on the front/back by means of special mechanical joining kits.

The enclosure must be equipped with a supporting structure.

The minimum thickness of structural components must be:

- galvanized steel sheet uprights (EN10326-S 280 GD Z) with closed profile 12/10mm (in hot galvanized steel)

- stainless steel sheet uprights (AISI 304) with closed profile 12/10mm for busbars system

In > 4000A

- galvanized sheet steel angle pieces (EN10326-S 280 GD Z) 25/10mm

- galvanized sheet steel plinth flanges (EN10326-S 280 GD Z) 25/10mm

- galvanized steel sheet mounting plates (EN10326-S 280 GD Z) 15/10mm (in hot galvanized steel) The minimum thickness of pickled metal sheet components must be:

- Panels 15/10mm.

- Doors 15/10mm.

The segregations must be made of EPDM rubber/ galvanized sheet / Lexan

3.2 Busbars section

- The main busbars have to be suitable for positioning at any height (including roof and bottom) of the enclosure.

- The derivation busbars have to cross vertically in to the side/on the bottom of each panel;

- Metal/plastic/Lexan separators must provide for the segregation of the main and sub-busbars from the other components.

- The busbars must have an adequate section in order to support the electrodynamic forces symmetrical short-term current for 1 second.

- The busbars shall be made of electrolytic copper bare, in detail:

flat busbars ETP 99.9% UNI-EN 13601 R-=25 daN/mm shaped section busbar ETP 99.9% UNI-EN 13601 R-=20 daN/mm

- If required by specific environmental conditions linked to the local installation site, it must be possible (under special condition) to tin, silver or sheathe the busbars themselves.

- The busbars can be either flat or shaped section busbars.

- The busbar holders can be either linear or scaled busbar holders.

3.3 Installation kit for equipment

- Taking advantage of the modularity of the columns (modules E=25mm) it should be possible to install more than one switch, also of different size, in the same column; the enclosure must be suitable for assembling different types of switches (fixed, plug-in, withdrawable, fixed-with accessories, plug-in with accessories, withdrawable with accessories) and switches with front and rear terminals.

- In order to reduce the size of the enclosure it shall be possible to install more than one air circuit-breakers in the same column (for In <4000A)

3.4 Accessibility

All the normal operations shall be possible from the outside of the enclosure after the door is opened.

3.5 Connecting cables area

The area dedicated to the connection of the power cables is to be placed at the rear side of the panel, and shall have the following characteristics:

- The size shall be such as to allow a comfortable cable access for all maintenance services and any possible extensions

- Possibility of receiving the power cables from both above and bottom side

3.6 Enclosures earthing plant

- The enclosure should be longitudinally crossed by an electric copper earthing busbar, bolted solidly to the metal frame and provided with a section in compliance with the sections planned for the short-circuit withstand of the enclosure itself.

- The whole structure and elements of the carpentry shall be firmly attached one to each other by means of special screws, in order to ensure appropriate electrical contact between the parties.

- The doors, in case of instruments installed, shall be connected to the metal frame using flexible copper twisted cables, provided with a minimum section of 16mmq

3.7 Painting

All the compartments metal infill should be properly treated and painted so as to provide excellent resistance to wear.

Painting cycle:

- Sheet washing

- Phosphating with iron salt base

- Drying in tunnel at 100°C

- External and internal painting with electrostatic application of thermosetting powder enamel with epoxy polyester binders. Grey orange-peel RAL 7035 colour, total thickness: 60/70 micron.

- Polymerisation in oven at 180°C.

Paint characteristics:

- Binder: epoxy polyester

- Specific gravity: 1,61g/cm3

- Theoretical coverage: 10,4 m2/Kg. with films of average thickness 60 microns

- Melting point: 85-95 °C (Kofler Hot bar Method)

- Granulometry: standard distribution between 5 and 100 micron with average size of the particles between 30 and 40 micron. Hardening: 12 min. at 190 °C (temperature of object).

- Hardness: 1H - 2H

- DIN 53152 bending elasticity: DIN 53152: unaltered on 1/4” spindle

- DIN 53151 reticular adherence: GT O (100%)

- Erichem elasticity: SEN DIN 53156: > 6mm

- Gardner resistance to impact: 25 Kg. x cm.

The painting shall have passed the resistance tests to saline fog (193 hours).

4. LOW VOLTAGE EQUIPMENT

The main apparatuses assembled in the enclosure should be tailored-made according to the characteristics of the project described in the wiring diagrams and should respond to specific requirements.

The main apparatuses that can be mounted on the panel are of the following type:

-Modular switches -Moulded-case circuit-breakers -Air-circuit -Contactors -Disconnectors -Measuring instruments

5. TESTS AND CERTIFICATES

-The enclosure must be in compliance with IEC 61439-2-1/IEC 60439-1 standard

- The enclosure must have passed vibration test according to IEC 60068-2-57 standard

- The enclosure must have passed seismic test according to IEE Std 693 standard

- The enclosure must report IK degree (mechanical resistance) expressed in Joules in compliance with the requirements of the IEC 62262 standard.

- The enclosure must report IP degree (degree of protection) expressed in compliance with the requirements of the CEI EN 60529 - IEC 60529 standard.

6. INSTALLATION PROCEDURE

- The enclosure must be installed on the floor with plinth or without plinth using the relating kit.

- If required by the installation requirements, the enclosure must be able to be fixed to the floor in the following ways:

through the plinth with appropriate fittings for floor fixing using special fixing kit to the floor;

The enclosure, when requested by dimensional requirements, must be suitable for wall fastening using wall mounting brackets.

Art. 4.5

LOW VOLTAGE CABLES

All cables shall be single or multi core as per drawing E201, insulated in rubber quality G7 (cable temperature at the end of the short circuit not exceeding 90° C) with low emission of toxic or opaque fumes in case of a fire.

Small cables up to 4 sq.mm within one single room can be insulated in PVC, fire resistant type N1VVK or equivalent.

All cables must be new and from well-known European manufacturer.

MEDIUM VOLTAGE CABLES

MV cables shall be of type RG7H1M1 - Afumex compact 105, of following characteristics:

Reference code: HD 620 CEI 20-13 Voltage (nominal) 20kV Voltage (Max) 24kV Nominal cross section 1*95 sq.mm.

Execution: conductors shall be twisted together.

The cable shall be supplied and installed in one single piece, with the conductors twisted already. Cable terminations shall be protected to prevent entering into the cable of humidity.

Art. 4.6

INSTALLATION OF NEW MV CABLES

The MV cables shall be installed respecting the following requirements:

Cables shall be installed with an ambient temperature greater than 0°C The conduits of the ductbank shall be checked and cleaned from any debris or water, using pigs or compressed air.

The incoming face of the conduits shall be equipped with dedicated cones for facilitating the cable passage preventing damages to the cable jacketing.

To facilitate the cable slip into the conduits can be used talcum powder. No other lubricants shall be permitted.

Bending radius shall be the more stringent value between manufactured instructions and CEI 11-17 code.

The cable shall be pulled by means of the pullinghead connected to the conductor copper core (no the shield) and the pulling force shall be limited to 5 Kg/mm2 (49 N/mm2). Shield and jacketing shall not be used for pulling the cable.

The cable shall be installed with a one-time operation, using a motorized winch with an automatic clutch. The winch shall also be equipped with a dynamometer. The COR shall be present checking the dynamometer during the pulling operation.

Cable speed during pulling operation shall be limited to 5 and 10 m/minute.

At the completion of the pulling, a protective termination shall be installed on the cable.

Art. 4.7

TESTING OF NEW MV CABLES

After cable installation, but before it is put into service, the cable shall be tested to verify it was not damaged during the installation, by means of a continuous voltage test for 15 minutes between each conductor and all the other connected together to ground.

Test voltage is 4 U0 (48 kVcc) Accepted alternative test can be done using a sinusoidal alternate voltage as follows:

A1 - test voltage at 50 Hz for the nominal voltage (20kV) for 24 hours A2 - test voltage 3 U0 (36kV) at 0.1 Hz for 15 minutes.

Testing shall be executed only by qualified operators using all safety precautions to avoid any shock or electrocution.

In case of testing with continuous voltage, the cable must be discharged after each test using a switch hook connected to ground.

Art. 4.8

CABLE ROUTING

Existing trenches in the floor, can be used to run all cables to be installed under this SOW.

Existing metal cable trays can be used upon specific permission from COR as they serve other users in the building.

New cable trays shall be installed as required under this SOW.

The drawings show the existing cable trenches and trays and the new ones. However, it is the contractor's sole responsibility to determine whether a new cable tray must be installed.

Branch wiring and load wiring of smaller size shall be routed inside EMT's surface mounted.

Metal junction box per NEMA sizing shall be installed every 15 meters of run or after any 2 curves whatever occurs first.

Art. 4.9

NEUTRAL CABLE SIZING

The neutral conductor shall always be interrupted by the circuit breaker that provides a protection relays on neutral.

Under these circumstances, the neutral conductor for cables of section less or equal to 16 sq.mm. shall have the same size of the phase conductor, while bigger neutral conductors shall be half of the phase conductor, provided the circuit is not carrying a current with a heavy harmonic content. In this case that neutral size shall be equal to the phase conductor.

PE conductor and ground bonding cables above 25 sq.mm size, shall be sized according to the cable capacity to support the maximum calculated short circuit current for the cable, without exceeding the maximum temperature admissible for the cable insulation material.

PE and bonding cables for smaller sections shall be sized equal to the neutral conductor size.

Color of jacketing. Light blue color is reserved for the neutral conductor. Yellow - green color is reserved for PE and ground conductors. Phase colors can be any excluded colors above.

In general voltage drop on cables must be limited to 4% from power delivery to end user.

Art. 4.10

WORK STANDARDS

The contractor shall ensure that all work conforms to local and U.S. codes and standards including the current U.S. National Electric Code.

All work shall be performed under American Embassy Rome procurement, Consulate Milan security, and other applicable guidelines.

Art. 4.11

VENTILATION AND AIR CONDITIONING

SUPPLY AHU:

AIRFLOW 3850 m³/h Supply Fan PLUG FAN EXTERNAL STATIC PRESSURE 106 Pa With installed inverter IP20. The motor must be powered only by inverter The AHU shall comply with Ecodesign 2016.

EXTRACTION AHU:

AIRFLOW 3500 m³/h Supply Fan PLUG FAN EXTERNAL STATIC PRESSURE 190 Pa With installed inverter IP20. The motor must be powered only by inverter The AHU shall comply with Ecodesign 2016.

For both AHUs an alarm must be installed that activates when the pressure drop on the filtering section overcomes the set threshold.

MULTISPLIT

Outdoor unit:

Cooling Capacity: 10 kW Absorbed Power (min-max): 2.44-4.04 kW

EER: 3.56

Refrigerant gas: R410A Indoor units:

Wall mounted Cooling capacity: 5 kW each

Page 1/4 Vulcan Euro Pro Rel. 2.9.0.2 01-03-2017 8-5-2017 12:45

SABIANA s.p.a. - Via Piave 53 20011 Corbetta (MI) Italia

- Tel. 02.97203.1 - Fax 02.9777282 -

- info@sabiana.it - www.sabiana.it -

Off. N°

05-08-2017 data: 05-08-2017

Rel. 2.9.0.2 01-03-2017 riferimento offerta: REPLACEMENT OF MEDIUM VOLTAGE EQUIPMENT riferimento unità:

località: MILAN cliente: US CONSULATE GENERAL MILAN all'attenzione:

N° 1 Unità di trattamento aria Vulcan Pro - modello 175-100 portata aria di MANDATA = m³/h 3850 pressione (prevalenza) statica utile in MANDATA = Pa 106 portata aria di RIPRESA = m³/h // pressione (prevalenza) statica utile in RIPRESA = Pa //

Altitudine di progetto m 0 limiti di funzionamento °C -40 / +50 Conforme a direttiva Ecodesign 2016 schema:

sezioni di macchina:

1 = Inf. 1680 dimensioni:

sezione inferiore lunghezza: 1690 mm altezza+basamento: 680 + 0 mm sezione superiore lunghezza: mm altezza: mm profondità: 1178 mm peso totale: 153 kg

Le dimensioni in lunghezza delle sezioni ed il peso potranno subire variazioni in fase esecutiva caratteristiche costruttive telaio portante con profili estrusi in alluminio da mm 55 spessore pannelli: 35 mm isolamento: poliuretano iniettato lato interno pannello: in acciaio zincato carpenteria interna: lamiera zincata lato esterno pannello: in acciaio preverniciato bacinelle in: serrande: standard in lamiera zincata lato ispezione: destra lato attacchi: sinistra

Page 2/4

8-5-2017 12:45

SABIANA s.p.a. - Via Piave 53 20011 Corbetta (MI) Italia

- Tel. 02.97203.1 - Fax 02.9777282 -

- info@sabiana.it - www.sabiana.it -

Off. N°

05-08-2017

Sezione di macchina

SEZIONE 1 LUNGHEZZA: (mm) 1680 PESO :(kg) 155 155

Sezione di aspirazione

Serranda in lamiera zincata dimensioni N°1 1100x310 mm . Portata d'aria 3850 m³/h

Predisposta per servocomando

Filtro a tasche rigide

Prefiltro a celle rigenerabili in fibra sintetica di tipo pieghettato, efficienza di filtrazione G4 N°1 592 x 592 x 48 + N°1 287 x 592 x 48 mm, spessore 48 mm

Perdita di carico prefiltro iniziale 47 Pa - Perdita di carico prefiltro media 99 Pa - Perdita di carico prefiltro finale 150 Pa

Filtro a tasche standard in microfibre di vetro efficienza F8 N°1 592 x 592 x 292 + N°1 287 x 592 x 292 mm

Perdita di carico filtro iniziale 102 Pa - Perdita di carico filtro media…