Becquer Solar on Roofs

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Becquer Energy, with is roots in Singapore, has been pioneering the kW and MW range solar ground mount and roof assets with a precision in design and engineering, backed by the corporate sector and the financial world alike, to make the use of solar electricity more widespread in a predictable, genuine and integrated way through the use of material and process technologies that have all been developedin-house.

The following pages contains information on all the major components of a solar asset, the exact details of which may vary from site to site. The objective of this document is to standardize the design and make it simpler for the end customer to get a basic overview of the technical specifications of the raw materials and components that make up the solar asset. This document serves as a reference only.

Overall Power Supply Architecture

The diagram below shows the architectural change to the power supply for the end customer whereby the solar asset is synchronized at the LT panel to work seamlessly with the existing sources of power.


DISCLAIMER


© Becquer Energy India Pvt. Ltd. 2021 ( A Becquer Energy Company) Bandra Kurla Complex Plot C 59 11th Floor, G Block, Platina, Bandra Kurla Complex Rd, Mumbai, Maharashtra 400051
25B Jalan Membina | Singapore 164025

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Non-Puncture Module Mounting Bases

Since the structure is like the backbone of the solar ground mount plant, it has been made ground up using customized channels that are suitable for the location in terms of rust protection, wind loading and flexibility to add cleaning systems in the future. The Becquer structure is capable of being mounted at any height, altitude, or terrain without having to puncture the foundation surface. Raw Material: Hot Dip Steel, Aluminum, Galvalume with Superior Rust Protection Bonding Technique: Mechanical + Civil + Chemical.



Depending on whether the roof is a seam type roof or a trapezoidal or any other shape, the clamping structure varies accordingly as shown next:


Standard Features

Parameter Description
Ingress rating Outdoor/Indoor
Cable entry Top/Bottom
Metering cabinet Separate
Ventilation Forced/Natural
Access Safety With locking system
Color Sky grey
Multifunction Meter Yes


Becquer Modules are targeted at both large scale utility projects and medium sized projects. They are made in tier 1 or tier 2 quality grade as required by the developer. The primary objective of each variant of the panel is to ensure maximum space efficiency and durability in a wide range of operating conditions.


Standard Features

Parameter Description
Ingress rating Outdoor/Indoor
Cable entry Top/Bottom
Metering cabinet Separate
Ventilation Forced/Natural
Access Safety With locking system
Color Sky grey
Multifunction Meter Yes

DISCLAIMER


© Becquer Energy India Pvt. Ltd. 2021 ( A Becquer Energy Company) Bandra Kurla Complex Plot C 59 11th Floor, G Block, Platina, Bandra Kurla Complex Rd, Mumbai, Maharashtra 400051
25B Jalan Membina | Singapore 164025

Size: KW/Units


Address:

    Solar Cells and Modules


    Highest Space Efficiency
    5 – 6 sq meter per kW
    Highest Cell Efficiency
    18% - 22%
    Lower Material Weight
    17 tons per MW lesser
    Strongest Chemical Resistant Glass
    2-3 mm | tempered

    Standard Features

    Parameter Description
    Ingress rating Outdoor/Indoor
    Cable entry Top/Bottom
    Metering cabinet Separate
    Ventilation Forced/Natural
    Access Safety With locking system
    Color Sky grey
    Multifunction Meter Yes

    The modules are made with various mixtures of cells, that leads to different looks, power outputs per module, and busbar arrangement on the modules that carry the generated solar current.

    Each module piece will carry the capacity details obtained under standard testing conditions The shape, size, wattage class may vary according to the raw material availability

    Panel


    Alternating Current Distribution Box | ACDB

    ACDB is a metal enclosed electrical combiner panel fabricated using high grade CRCA sheet coated with 7 tank treatment process paint. All the components inside the ACDB will be compartmentalized individually for ease of access and safety. The panel will be suitably sized and well ventilated to dissipate the heat quickly due to electrical losses without increasing the working temperature beyond permissible limits.


    Standard Features

    Parameter Description
    Ingress rating Outdoor/Indoor
    Cable entry Top/Bottom
    Metering cabinet Separate
    Ventilation Forced/Natural
    Mounting Floor mounted
    Access Safety With locking system
    Color Sky grey
    Multifunction Meter Yes


    Typical Single Line Diagram of the ACDB:


    Cables


    Solar Cables – Direct and Alternating Current Carriers

    Cables are the electrical links connected between various stages in Solar PV power plant to carry the power to required premises safely and reliably. All cables are tested for performance in globally accredited laboratories.


    Standard Features

    Parameter Description
    Ingress rating Outdoor/Indoor
    Cable entry Top/Bottom
    Metering cabinet Separate
    Ventilation Forced/Natural
    Mounting Floor mounted
    Access Safety With locking system
    Color Sky grey
    Multifunction Meter Yes

    The cross-sectional view below shows the various layers of the cable outer covering and the inner cores. On the DC side generally 4 sq. mm thick cables are used and on the AC side, it depends on the inverter distribution, distance to the LT panel, etc.


    Cable Tray & Accessories

    Cable Tray accessories guide the cables in an ordered and safe manner. They give mechanical support for support to cables and protect them from various conditions such as mechanical stress, moisture, fire, UV exposure etc. Cable trays will be fabricated using high quality Hot Dip Galvanized iron material or FRP as per the design decision of Becquer with suitable thickness and sizes.

    Standard Features:

    • High quality HDG trays with minimum of 80 Microns thick | Fibre Glass Reinforced Plastic substrate.
    • All standard sizes were available.
    • Most ergonomic design for ease of installation.
    • Direct plug-in type approach.
    • Effective Heat transfer process.
    • All fitting accessories are of SS 304 rust free material.
    • Channels available in 2.5 – 3 meter long for better transportation and handling.
    • Channels can be mounted on galvalume sheets, RCC ceilings, Side walls etc.
    • Standard thickness available in 1.6 mm, 2 mm, 2.5 mm, 3 mm.

    Cable conduits

    In addition to Cable trays, cable conduits were used to route the cable where cable tray laying is not possible such as on top of RCC roofs, narrow underground tunnels etc. The cable conduits are available in both rigid & flexible units as demanded by the application.

    Standard Features:

    • Heavy duty PVC conduits for internal applications.
    • HDPE conduits for external applications due provide protection against UV rays from exposure to direct sunlight.
    • End cap sealing arrangement to avoid water clogging.
    • Threaded mouth design for quick & efficient installation.
    • Suitable “L” & “T” Bends for required turns without additional mechanical stress on cables.

    Cable Lugs – Terminating Accessories

    Lugs are constructed from high-quality materials made with electrolytic copper for high conductivity and tin-plated for corrosion resistance. The Lugs are designed, manufactured, tested and comply with International Standards like BS, DIN, UL and IEC.


    Inverter


    Power Conditioning Unit – Fuse Less Inverters

    Inverters are power electronic converters which convert DC power generated from Solar Arrays into standard 3 Phase or 1 phase AC power to synchronize with Power grid for safe operation. All inverters are up to date upgraded with latest technology for increased conversion efficiency & other salient features.


    Standard Features

    Parameter Description
    Efficiency 98.%
    Management String Level
    Metering cabinet Separate
    MPPT Tracking 5-10 per inverter
    Display LED
    Mounting Floor / Wall Mounted
    Grid Code IEC 61727
    Body Color Metallic Grey / White / Black
    Anti-Corrosion Yes

    The diagram below shows the internal architecture of the inverter:

    The following 4 features are a must for all inverters or power conditioning units

    Parameter Description
    Max. Efficiency 98.8% @480 V; 98.6% @415V
    European Efficiency 98.6% @480 V; 98.4% @415V
    Max. Input Voltage 1,100 V
    Max. Current per MPPT 40A
    Start Voltage 200 V
    MPPT Operating Voltage Range 200 V ~ 1,000 V
    Nominal Input Voltage 620 V @415 V; 720 V @480 V
    Number of Inputs 20
    Number of MPP Trackers 10
    Nominal AC Active Power 100,000 W (415 V / 480 V @50°C)
    Max. AC Apparent Power 110,000 VA
    Max. AC Active Power (cosφ=1) 110,000 W
    Nominal Output Voltage 240 / 415 V, default 3W + N + PE; 277 / 480 V, 3W + PE
    Rated AC Grid Frequency 50 Hz / 60 Hz
    Nominal Output Current 139.2 A @415 V; 120.3 A @480 V
    Max. Output Current 154.6 A @415 V; 133.7 A @480 V
    Adjustable Power Factor Range 0.8 LG ... 0.8 LD
    Max. Total Harmonic Distortion <3%
    Input-side Disconnection Device Yes
    Anti-islanding Protection Yes
    AC Overcurrent Protection Yes
    DC Reverse-polarity Protection Yes
    PV-array String Fault Monitoring Yes
    DC Surge Arrester Type II
    AC Surge Arrester Type II
    DC Insulation Resistance Detection Yes
    Residual Current Monitoring Unit Yes
    Display LED Indicators, Bluetooth/WLAN + APP
    USB Yes
    MBUS Yes (isolation transformer required)
    RS485 Yes
    Dimensions (W x H x D) 1,035 x 700 x 365 mm (40.7 x 27.6 x 14.4 inch)
    Weight (with mounting plate) 90 kg (198.4 lb.)
    Operating Temperature Range -25°C ~ 60°C (-13°F ~ 140°F)
    Cooling Method Smart Air Cooling
    Max. Operating Altitude without Derating 4,000 m (13,123 ft.)
    Relative Humidity 0 ~ 100%
    DC Connector Staubli MC4
    AC Connector OT Terminal
    Protection Degree IP66
    Topology Transformer less
    Certificate EN 62109-1/-2, IEC 62109-1/-2, EN 50530, IEC 62116, IEC 62910, IEC 60068, IEC 61683
    Grid Code IEC 61727

    Based on the roof specific factors, the stringing of the DC cables, that is designing the current flow from the solar modules to the inverter in the most optimized way is done using the below 3 architectures. The overall objective is to reduce the current losses, minimize the heat loss due to current and maintain balancing amongst the current flows between inverters.

    Architectural Options:


    Accessories


    To attach the components together in a seamless and secure way multiple accessories are needed as listed below. During the assembly work, the Becquer team may add more components at its discretion.


    Component Standard Feature
    MC4 Connectors Tinned copper, weather-proof
    Ferrules Flexible, UV resist
    Cable ties Nylon, UV resist
    Cable glands Double compressed, Heavy duty
    Control wiring Flexible, Copper, PVC
    Long barrel Cable lugs Bimetallic / Aluminum
    Cable trays Black, 80 Microns thick galvanized, Rust free
    Fire extinguishers Dry powder type, ABC type protection
    Cable conduits HDPE | Black Metallic
    Zinc spray Pressurized zinc spray
    Heat sleeves High density PVC insulating sleeve
    Anchor fasteners SS 304 grade, Rust free
    Nut & Bolt SS 304 grade, Rust free

    RMU


    The entire solar plant would be digitalized for its power flow and all key geographical and electrical parameters would be tracked on a continuous basis for 25 years in the following architecture. The night light would be installed for safe and emergency access.


    Component Standard Feature
    Communication Method SIM based
    SIM Type 2G/3G/4G
    Output Data View Types Daily | Monthly | Annual
    Error Log Monthly
    Mounting Inside ACDB | Inverter

    All the data would be accessible to the end customer for all the days, with an easy toggling on the online platform that would allow for any historical data to be accessed at the click of a button.


    Others


    Metering architecture – Energy recording & monitoring

    The Energy generation from the Solar Power plant must be monitored accurately to quantify & assess performance of plant on timely basis. Becquer chooses state of Art metering infrastructure in terms of smart meters with high accuracy class as per requirements. Various meters for energy include ETV based uni directional , Bi-directional meters, Dual source meters, ABT based meters, Digital multifunctional meters etc. All meters are equipped with RS485 communication module for remote monitoring using SCADA systems.

    Standard Features
    Parameter Description
    General Dimentions 180mm*252mm*118mm
    Weight 2 Kgs
    Enclosure Mater Fire Retardant Polycarbonate
    Sealing Provisions Terminal Cover|Meter Main COver
    Display 8 character alphanumeric with backlight
    Connection Type 3 phase, CT operated
    Positioning Inside ACDB
    Accuracy Class 0.2s
    Ingress Protection IP 53
    Insulation Class Protection class II
    Operating Temperature -10 – 60 deg Celsius
    Remote Communication 2G / 3G SIM based

    Cross Section View of the Clamps and Accessories

    This diagram and dimensions above are only representational; the exact dimensions would vary from mentioned which would be decided by the Becquer team as per the project design.


    Trapezoidal Roofs:
    General Adhesive Features
    Working Times 15-18 minutes
    Fixture Time 30-35 minutes
    Full Cure 24 hours1,100 V
    Gap Filling Up to.375 inches
    Shore Hardness ASTM D 2240 72 - 78D
    Elongation DIN 53283 7-18%
    Modulus, Psi 75,000 -100,000
    Tensile Strength, Psi ASTM D 638 3,100 – 3,300 psi
    Service Temperature -40 0F to 250 0F, -40 0C to 121 0C
    Adhesive Component Features Resin Activator
    Appearance Off-White Amber
    Viscosity @ 25 0C, Brookfield RVT 40, 000 – 60,000 40,000 – 60,000
    Flash Point (TCC) 0F 51 51
    Density 8.07 8.05
    Mix Ratio by Volume 1 1

    DISCLAIMER


    © Becquer Energy India Pvt. Ltd. 2021 ( A Becquer Energy Company) Bandra Kurla Complex Plot C 59 11th Floor, G Block, Platina, Bandra Kurla Complex Rd, Mumbai, Maharashtra 400051
    25B Jalan Membina | Singapore 164025



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