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Solar Module Mounting Bolting Clamping

Solar Module Mounting Bolting Clamping

MOUNTING METHOD: BOLTING

· This mounting method has been qualified by atakale Solar Inc. as well as certified by VDE. and Atakale · Modules should be bolted to supporting structures through the mounting holes in the rear frame flanges only. · Each module must be securely fastened at a minimum of 4 points on two opposite sides. M8 X 1.25 - Grade 8.8 (5/16”-18 Grade B7) galvanized or A2-70 stainless steel bolt and nut should be used. The yield strength of bolt and nut should not be less than 450 MPa. · Tightening torques should be 17~23 Nm (12.5~17.0 ft-lbs) respectively for M8 (5/16”-18) coarse thread bolts, depending on bolt class. · In areas with heavy wind loads, additional mounting points should be used. The system designer and the installer are responsible for




Bolting on the short frame side using four standard mounting holes. Mounting rails run perpendicularly to the long frame side. An additional support bar should be placed below the module as shown below.



Bolting on the short frame side using four standard mounting holes. Mounting rails run parallel to the long frame side


Bolting on the long frame side using four innermost mounting holes. Mounting rails run perpendicularly to the long frame side.  Bolting on the long frame side using four
innermost mounting holes. Mounting rails run parallel to the long frame side.



MAINTENANCE
Do not make modifications to any components of the PV module (diode, junction box, plug connectors or others). · Regular maintenance is required to keep modules clear of snow, bird droppings, seeds, pollen,
leaves, branches, dirt spots, and dust. · Modules with sufficient tilt (at least 15°), generally may not require cleaning (rain will have a selfcleaning effect). If the module has become soiled, wash with water and a non-abrasive cleaning
Do not make modifications to any components of the PV module (diode, junction box, plug connectors or others). · Regular maintenance is required to keep modules clear of snow, bird droppings, seeds, pollen, leaves, branches, dirt spots, and dust. · Modules with sufficient tilt (at least 15°), generally may not require cleaning (rain will have a selfcleaning effect). If the module has become soiled, wash with water and a non-abrasive cleaning
All the basic requirements of the main installation manual should apply to the alternative mounting methods, unless otherwise specified. The loads described in this manual corresponds to test loads. For installations  omplying with IEC 61215-2: 2016 and UL 1703, a safety factor of 1.5 should be applied for calculating the equivalent maximum authorized design loads. Project design loads depend on construction, applicable  tandards, location and local climate. Determination of the design loads is the responsibility of the racking suppliers or professional engineers. For detailed information, please follow local structural code or contact your  rofessional structural en- gineer port structure.
Atakale Solar Inc.’s warranty may be void in cases where improper clamps or unsuitable installation methods are found. When installing inter-modules or end-type clamps, please take the following measures into account: Do not bend the module frame. Do not touch or cast shadows on the front glass. Do not damage the surface of the frame (to the exception of the clamps with bonding pins). Ensure the clamps overlap the module frame by at least 5 mm (0.2 in) Overlap in length by at least a) 80 mm (3.15 in) when 2400 Pa < uplift load ≤ 4000 Pa is required. b) 40 mm (1.57 in) when uplift load ≤ 2400 Pa is required. Ensure the clamp’s thickness is at least 3 mm (0.12 in).

MOUNTING METHOD A CLAMPING
The mounting method has been qualified by Canadian Solar Inc. as well as certified by VDE andAtakale · Top or bottom clamping methods will vary and are dependent on the mounting structures. Please follow the mounting guidelines recommended by the mounting system supplie
· Each module must be securely fastened at a minimum of four points on two opposite sides. The clamps should be positioned symmetrically. The clamps should be positioned according to the authorized position ranges defined in table A.  Install and tighten the module clamps to the mounting rails using the torque stated by the mounting hardware manufacturer. M8 X 1.25 Min. 5 mm overlap Min. overlap length 40 mm (5/16”) bolt and nut are used for this clamping method.
· Tightening torques should be within 17~23 Nm (12.5~17.0 ft-lbs) for M8 (5/16”) coarse thread bolts, depending on the bolt class. For the bolt grade, the technical guideline from the fastener suppliers should be followed. Different recommendations from specific clamping hardware suppliers should prevail. · The system designer and installer are responsible for load calculations and for proper design of sup
Clamp material should be anodized aluminum alloy or stainless steel. · Clamp positions are of crucial importance for the reliability of the installation. The clamp centerlines must only be positioned within the ranges indicated in table A, depending on the configuration and load. · For configurations where the mounting rails run parallel to the frame, precautions should be taken to ensure the bottom flange of the module frame
overlaps the rail by 15 mm (0.59 in) or more



Use two clamps on the long side and two clamps on the short side. Mounting rails run perpendicu- lar to the long side frame. 

Use four clamps on the long side. Mounting rails run perpendicularly to the long side frame.

A1 range = (300 – 550) mm A2 range = (200 – 250) mm Maximum Load: Uplift load ≤ 2400 Pa Downforce load ≤ 2400 Pa

A1 range = (340 – 550) mm Maximum Load: Uplift load ≤ 2400 Pa Downforce load ≤ 2400 Pa



Use four clamps on the short side and two clamps on the long side. An additional sup Use four clamps on the long side. Mounting rails run parallel to the long side frame.

A1 range = (410 – 490) mm Maximum Load: Uplift load ≤ 2400 Pa Downforce load ≤ 5400 Pa



Use four clamps on the short side. Mounting rails run perpendicular to the long side frame
A range = (200 - 250mm) Maximum Load: Uplift load ≤ 1400 Pa Downforce load ≤ 1400 Pa
A range = ( 0 - 200 mm) Maximum Load: Uplift load ≤ 1200 Pa Downforce load ≤ 1200 Pa



Use four clamps on the long side. Mounting rails run perpendicularly to the long side frame.
Use six clamps on the long side.Mounting rails run perpendicularly to the long side frame
A1 range = (340 – 550) mm Maximum Load: Uplift load ≤ 2400 Pa Downforce load ≤ 2400 Pa
A1 range = (410 – 490) mm Maximum Load: Uplift load ≤ 2400 Pa Downforce load ≤ 5400 Pa
A3 range = (250– 350) mm A5 range = (250– 350) mm
Maximum Load: Uplift load ≤ 2400 Pa Downforce load ≤ 5400 Pa Notice: This method is recommended for better reliability



Use four clamps on the long side. Mounting rails run parallel to the long side frame.

A1 range = (240 – 330) mm Maximum Load: Uplift load ≤ 2400 Pa Downforce load ≤ 4000 Pa
Use six clamps on the long side. Mounting rails run perpendicularly to the long side frame. A3 range = (80 –380) mm, A5 range = (80 –380) mm Maximum Load: Uplift load ≤ 4000 Pa Downforce load ≤ 6000 Pa



Use four clamps on the long side. Mounting rails run perpendicularly to the long side frame.




Use four clamps on the short side. Mounting rails run perpendicular to the long side frame

Use four clamps on the long side. Mounting rails run perpendicularly to the long side frame.

 Use six clamps on the long side. Mounting rails run perpendicularly to the long side frame


Use four clamps on the long side. Mounting rails run parallel to the long side frame


Use two clamps on the long side and two clamps on the short side.
Mounting rails run perpendicular to the long side frame.


Use four clamps on the long side. Mounting rails run perpendicularly to the long side frame.
Use four clamps on the short side. Mounting rails run perpendicular to the long side frame




Your Comments

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13 Feb 2022
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