aptos solar technology DNA-108 Series High Efficiency Half-Cell Module

Product Information

This product is a High Efficiency Half-Cell Module designed for solar panel installations. It is important to note that only authorized, qualified, and trained installers should handle these
solar panels. The panels are pre-wired and terminated with MC4 compatible connectors.

Installation Guidelines

• Ensure that the solar panels and tools are dry before installation.
• Avoid making connections while under load and do not disconnect under load.
• Use insulated tools for electrical connections.
• Avoid stepping or standing on the solar panel.
• Do not disassemble the solar panel or junction box.
• Support structures used for installation must be wind rated, approved for use, and designed to retain structural integrity over the lifespan of the panels.
• When carrying the panel, always have two or more people and avoid carrying it by its wires or junction box.
• Wear non-slip gloves and protective clothing during installation.
• The solar panel can be installed in either portrait or landscape orientation.
• Avoid installing the solar panel in areas where flammable vapors or gases are present or in corrosive environments.
• A minimum tilt angle of 5 degrees is required for drainage and rainwater management.
• Avoid directing artificially concentrated sunlight onto the solar panel.
• Ensure that the junction box edge is at the top when mounted in portrait orientation.
• De-rating factors must be applied if the panel is installed above 2000m.

Electrical Connections

• When connecting the panels to each other, use compatible connectors that comply with Code requirements. All wiring should be double insulated with a minimum rating of 90°C and flexible copper conductors should be used, with the minimum size determined by applicable codes.
• The cables and connectors provided are UV and weather resistant, rated for -40°C to +90°C, and rated for 1500VDC.
• Panels can be wired in series or parallel to achieve desired voltages and current, but the system rating for voltage and current must not be exceeded. It is important to note that AST panels may produce up to 20% more power than the STC rating, depending on system design and albedo. This additional power gain should be considered when determining system sizing, string length, and selecting system components and wiring.
• Overcurrent protection devices should be employed with a 20A current rating for series or parallel connections. Comply with all code and design requirements.

High Efficiency Half-Cell Module

Introduction

This manual contains information about electrical and mechanical installation of the solar panels: DNA-108 Series

Disclaimer of Liability
Installation techniques and methods of this product is beyond Aptos Solar Technology’s control. AST does not assume responsibility of loss or damage resulting from improper installation, handling or use. AST disclaims liability for damage, loss, expense arising out of, or in any way connected with installation, use or maintenance by using this manual.

Regulation Information
This certified product meets the UL61730 standard for maximum system voltage of 1500V with maximum overcurrent protection rating of 25A. The installer or system integrator is assumed the responsibility to ensure compliance with all local electrical codes which may be applicable.

Warnings & Safety

• Solar panels generate electricity when exposed to light, which can cause lethal shock and burn hazards.
• Only authorized, qualified and trained installers should handle these solar panels. Do not touch live terminals with bare hands. Work only in dry weather with dry solar panels and tools.
• Do not make connections while under load. Do not disconnect under load. Use insulated tools for electrical connections. Do not step or stand on the solar panel. Do not disassemble the solar panel or junction box.
• Carry panel with two or more person. Do not carry by its wires or junction box. Wear non-slip, suitable gloves and protective clothing.
• Do not install the solar panel where flammable vapors or gases are present. Do not install in corrosive environment.
• Do not direct artificially concentrated sunlight on solar panel.
• Under normal conditions, a photovoltaic module is likely to experience conditions that produce higher current and/or voltage than reported at standard test conditions.
• Accordingly, the values of Isc and Voc marked on this PV module should be multiplied by a factor of 1.25 when determining component voltage ratings, conductor current ratings, and size of controls (e.g., inverter) connected to the PV output.
• The module is considered to be in compliance with this standard only when the module is either mounted in the manner specified by the mounting instructions, or when the mounting means has been evaluated with this PV module to UL 2703. A module with exposed conductive parts is considered to be in compliance with this standard only when it is either electrically grounded in accordance with the manufacturer’s instructions and the requirements of the National Electrical Code,  ANSI/NFPA 70 (2014-2017), or when the bonding means has been evaluated with this PV module to UL 2703.

Fire Rating
If mounted over a roof, the solar panel shall be mounted over a fire-resistant roof covering rated for the application. Refer to local authority for guidelines and regulations for building fire protection and required slope. The module fire performance rating is Type I.

Installing the Panel

• Aptos Solar Technology panels may be installed in various applications. The particular mounting is to be defined by the system designer. Installer must handle and mount the modules to prevent any impact on front surface, back surface, and frames as this could result in damage.
• Support structures used to support AST DNA panels should be wind rated and approved for use by the appropriate codes prior to installation. In addition, they must be designed from materials that retain structural integrity over the 25 years lifespan of the panels they support.
• AST DNA panels may be installed in portraits or landscape orientation.
• A minimum of tilt angle of 5 degrees is required to ensure drainage and enable rainwater.
• The junction box edge should be at the top when mounted in portrait orientation.
• Specific rails and frame clips approved by AST are listed in Table 1. Alternative rails and frame clips/fasteners need to be approved by AST to ensure compliance to UL61730 safety standard.
• De-rating factors must be applied if installed above 2000m.

Frame Cross Section

Module Wiring

• AST DNA panels are pre-wired and terminated with MC4 compatible connectors.
• Connections to other panels should use compatible connectors that comply with Code requirements. AST recommends that all wiring be double insulated with a minimum rating of 90 C, and wiring should use flexible copper conductors where minimum size should be determined by the applicable codes.
• The cables and connectors are UV and weather resistant from -40 C to +90 C and rated for 1500VDC.
• Panels may be wired in series or parallel to obtain desired voltages and current but must not exceed the system rating for voltage and current.
• AST panels may produce up to 20% more power than STC rating, depending on system design and albedo.
• The additional power gain should be taken into consideration when determining optimum system sizing, string length, and selecting system components and wiring.
• Overcurrent protection devices should be employed.
• 20A current rating for series or parallel. Please comply with all code and design requirements.

Grounding

• NEC, article 250 governs grounding method. Grounding method must follow local electric codes. Use bolt, M4, cup washer, grounding wires, flat washer, tooth washer, screw nut, M4 and install as shown in the diagram below.

• Torque specification is 2 to 3 Nm. Grounding materials is evaluated under UL1703.

  • cup washer: SS <1>9 (l>4.3 h8
  • grounding wires: single conductor, the cross section of conductor is no less than 4mm2
  • flat washer: SS <1>9 (!>4 .3 h8
  • tooth washer: <1>7 .8 <1>4.3 Thickness: 0.5 number of gears: 11
  • screw nut M4: SS

Specifications

• The electrical characteristics are within ± 10 % of the indicated values of Isc, Imp, Vmp, and Voc and ± 3 % of the indicated value Pmax under standard testing conditions (irradiance of 1000/m2, AM 1.5 spectrum, and a cell temperature of 25 C)
• Under normal conditions, solar panels are likely to experience conditions that produce more current and/or voltage than stated at standard test conditions.
• Accordingly, the values of Isc and Voc, inclusive of bifacial gain, should be multiplied by a factor of 1.25, or more, when determining component voltage ratings, and size of controls connected to the PV output. (Refer to code and design requirements).
• AST DNA panels have a maximum system voltage of 1500 VDC. Some grid-tied systems operate or near this voltage rating. The Voc increases as the ambient temperature decreases.
• Maximum system voltage is computed as the sum of the open-circuit voltage of the series-connected panels for the lowest expected ambient temperature.
• Temperature coefficients can be used to provide the most accurate prediction of the panel voltage under temperature extremes.

Maintenance

• ASTDNA panels are designed to require little to no maintenance. Depending on local conditions, panels may need periodic cleaning to remove dirt build-up and soiling. Panels should be washed with water to remove dirt and soiling. Frequency of cleaning will depend on local weather conditions and panel tilt. Once a year, have qualified service professional check the general condition of wiring and check to be sure that mounting hardware is at the correct torque. Loose connections may result in damaged panels.
• Panels generate electricity when there is sunlight, and cleaning/maintenance personnel must take proper precautions.

Mechanical Drawings

• Installers must use pre-drilled mounting holes on the frame.
• Frame clip must have minimum height dimension as shown.

End Frame Clip Mid Frame Clip

Mounting Methods

• Mounting holes are 14mm by 9mm. M8 bolt and fasteners.
• Torque value is 12.5 Nm – 18 Nm.
• Rails can run perpendicular or parallel to panel length. (See figure 1)

Fasteners

• Bolt: MS Stainless steel, abbreviated as ss
• Flat washer : ¢ 16-4>8.4 Hl.6 ss
• Sp1ing washer: cD12 .6-cD8.4 H4.7 ss

General Information

Slope should be less than 5 in/ft (127 mm/305mm) required to maintain a fire class rating. Any roof penetration required to mount the module must be properly sealed to prevent leaks. The modules are rated fire class C and are suitable for mounting over class A roof.

Pole Mount
When installing a module on a pole, choose a pole and module mounting structure that will withstand anticipated winds for the area.

Modules Installed with Mounting Holes
Modules should be bolted with M8 and M6 to the support structures through mounting holes located in the frame in the back flanges. See table in the following page. Torque should be 12.5-18 Nm for tightening the M8 bolt, the torque should be 9-15 Nm for tightening the M6 bolt.

Modules Installed with Clamping

• Modules should be bolted to the support structures rail by metal clamps. It is recommended to use clamp under the following conditions or approved by system installation. Clamping distance is quarter of the module length. See table in the following page.
• Clamp materials: Aluminum,
• Bolt torque: 12.5 – 18 NM, clamp must not contact the front glass
  • bolt: M8 SS
  • flat washer: diameter 16-8.4 mm H1.6 ss
  • spring washer: diameter 12.6-8.4 mm H4.7 ss.

DNA 108-MF10-395W, 390W, 400W

Electrical Specification| DNA-108-MF10-390W| DNA-108-MF10-395W| DNA-108-MF10-400W
---|---|---|---
STCrated Output Pmpp (W)| 390W| 395W| 400W
Module Efficiency| 19.97%| 20.20%| 20.47%
Open Circuit Voltage VVOC (V)| 36.85| 36.98| 37.04
Short Circuit Current ISC (A)| 13.61| 13.7| 13.79
Rated Voltage Vmmp (V)| 30.64| 30.84| 31.01
Rated Current Imax (A)| 12.73| 12.81| 12.9

• Standard Test Conditions for front-face of panel: 1000 W/m 2, 25°C, measurement uncertainty <3%

Temperature Coefficients

• Temperature Coefficients Pmmp           -0.35%/°C
• Temperature Coefficients Isc                 +0.054%/°C
• Temperature Coefficients VOC             -0.27%/°C
• Nominal Operating Cell Temperature (NOCT)        45°C

Test Operating Conditions

• Maximum Series Fuse                   25A
• Maximum System Voltage             1,500 VDC (UL&IEC)
• Maximum Load Capacity (Per UL 1703)      5400 PA Snow Load / 5400 Pa Wind Load
• Fire Performance Class                  Class C/Type 1

Mounting holes are 1/4 and 1/8 of the panel length

Junction Box Information

• Overcurrent protection type: none

• of bypass diodes: 3

• Diameter of cables: every module has 2 cables
• whose diameter is 4mm2 for any one of them, and it can endure 90oC insulation and can be exposed under sun light.

Ways of connecting

• Every module with 2 connectors that are positive electrode and negative electrode. When modules are installed in series, the first positive connector should connect with the negative connector of the next module.
• The modules are equipped with PV wiring connectors that comply with the Standard for Connectors for use in photovoltaic systems, UL 61730, the specific allowable mating connector manufacturer and model number are listed as below.

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All Rights Reserved. DNA-108
Version: AS-IM-001

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