ADJI- Extension of Existing Solar PV System

1. Scope of Work

ADJI invites qualified and eligible suppliers to submit their proposals for the extension of the existing solar photovoltaic (PV) system. The scope includes the supply, delivery, installation, testing, commissioning, and full integration with the current system.

The awarded contractor shall provide all required equipment, materials, accessories, consumables, labor, and tools necessary to deliver a fully functional and complete system.

2. Technical Specifications

2.1 Photovoltaic (PV) Modules

- Brand: Longi Solar

- Model: Hi-MO X10

- Rated Power: 630 W

- Quantity: 144 modules (a portion of the PV array will be connected to the existing inverter)

- Type: Monocrystalline, high efficiency

- Certifications: IEC 61215 / IEC 61730

2.2 On-Grid Solar Inverter

- Brand: Sungrow

- Model: SG50CX-P2 (5G Series)

- Rated Output: 50 kW

- Quantity: 1 unit

- Features:

  - Multi-MPPT tracking

  - IP65 protection

  - AFCI (Arc-Fault Circuit Interruption)

  - Remote monitoring compatibility

- Warranty: Minimum 5 years

2.3 DC Solar Power Cables

- Brand: Liban Cables

- Type: SH1Z2Z – 6 mm²

- Application: Dedicated for DC solar systems

- Quantity: 1,300 meters

- Color Coding: Red / Black

- Standard Compliance: IEC 62930 or equivalent

2.4 AC Power Cable (Inverter to ATS)

- Brand: Liban Cables

- Model: Torsad

- Specifications:

  - 3 × 70 mm² (phases)

  - 54.6 mm² (neutral)

  - 16 mm² (earthing)

- Quantity: 50 meters

- Compliance: IEC 60502-1 or equivalent

2.5 Control Panel Components (Schneider or ABB or Eaton or approved equivalent)

The system shall include a fully equipped and certified AC/DC control panel containing:

- 1 × MCCB, 4-pole (AC output protection)

- 10 × 63A DC breakers, 2-pole

- 6 × SPD Type 2, DC 800 V

- 20 × 25A fuses (1000 V) with compatible fuse holders

- All necessary wiring, connectors, terminals, ducting, and busbars

Panel Requirements:

- Minimum IP54 protection

- Proper AC/DC segregation

- Full labeling and safety indicators

3. Installation & Integration Requirements

- Complete mechanical and electrical installation including mounting, cabling, conduits, and accessories.

- Seamless integration with the existing solar PV array and ADJI electrical distribution system.

- Secure connection to the ATS through the designated AC cable route.

- Complete testing, commissioning, functionality verification, and handover.

- Submission of updated as-built drawings upon project completion.

4. Delivery & Execution Timeline

- Delivery Period: 2–4 weeks from contract award

- Implementation Period: 45–60 working days following material delivery

5. Warranty & Support

- Minimum 1-year comprehensive installation warranty

- Manufacturer warranties must be provided for all equipment

- Supplier must provide reliable local support for inverter and PV modules

6. Required Documents from Bidders

1. Company registration and VAT certificate with MOF Paper

2. Technical datasheets for all proposed equipment

3. List of executed and similar solar PV projects

4. Delivery schedule

5. Financial offer in USD

6. Warranty and after-sales support commitments

7. PV Steel Structure Specifications (reference to the design drawings)

All steel components shall be galvanized or factory-coated, otherwise two layers of oil-based protective paint shall be applied.

The structure must ensure long-term stability against wind loads, structural loads, corrosion, and environmental conditions.

7.1 Steel Components and Quantities

A. Roof Purlins

- Type: C-Channel C140 × 2 mm

- Total Length: 364 meters

- Total Weight: 1,536 kg

- Finish: Galvanized

B. Columns

- Type: HEA 160

- Total Length: 108 meters

- Total Weight: 3,283.2 kg

- Finish: With 2-layer oil-based coating

C. Rafters

- Type: IPE 160 and IPE 180

- Total Length: 30 meters and 78 meters

- Total Weight: 1,940 kg

- Finish: With 2-layer oil-based coating

7.2 Steel Plates

1. Base Plate:

   - 2000 × 1000 × 15 mm

   - Total Weight: 118 kg

2. Rafter Plate:

   - 2000 × 1000 × 12 mm

   - Total Weight: 37.68 kg

3. Cleat Plate:

   - 2000 × 1000 × 6 mm

   - Total Weight: 95 kg

7.3 Bolts and Anchors

- Anchor Bolts: M20 × 450 mm – 60 units

- Bolts:

  - M16 × 60 mm – 60 units

  - M12 × 30 mm – 320 units

All bolts must be galvanized and comply with DIN/ISO standards.

8. Civil Works – Footing & Tie Beam Specifications

All civil works must comply with Lebanese and international engineering standards, ensuring structural safety and durability.

8.1 Footing Concrete Bed

- Excavation: 8 m³

- Concrete: 5 m³

- Reinforcement Steel (Total 500 kg):

  - 14 mm bars

  - 10 mm bars

  - 8 mm bars

- Concrete Grade: C30 or higher

- Includes curing, compaction, and finishing

8.2 Tie Beam Construction

- Excavation: 11 m³

- Concrete: 7 m³

- Reinforcement Steel:

  - 200 kg of 10 mm steel

  - 190 kg of 8 mm steel

- Concrete Grade: C30 or higher

- Includes shuttering, leveling, formwork, and proper compaction

9. General Requirements for Steel & Civil Works

- All steel materials must be supplied with factory test certificates.

- Structural drawings and load calculations must be submitted by the contractor.

- All works must ensure structural reliability for a minimum lifespan of 10 years.

- Full anti-corrosion protection is mandatory for all exposed steel surfaces.

- The contractor must complete site cleaning and restoration after finishing the works.