Conector pentru profile tip H de aluminiu panouri fotovoltaice

It is the part that joins two aluminium rails one as the extension of the other. It enters partially into each of the two profiles and is fixed with screws, so that the joint behaves like a continuous rail, not like two hinged pieces that can bend in the middle. In practice, it lets you make rows of any length out of standard-length profiles.

The concrete advantage is that you cover large spans without ordering profiles in unusual lengths and you lose less material when cutting. The basic rule at installation: the joint is not placed in the middle of the distance between two support points, but as close as possible to a support - hook, adapter or fixing foot - so that the zone with maximum stress does not coincide with the joint zone. On long runs, expansion compensation must also be provided: on the roof, the temperature varies over the year by about 60-70 K, and a long rail changes its length noticeably, so the lack of expansion joints produces deformations and stresses at the anchoring points. Being made of aluminium, like the profile, it does not rust and does not create contact problems between different metals.

Aluminium splice connector for H-type photovoltaic panel profiles, inserted partially into both sections and fixed with screws, usually M10, so that the joint transmits the bending moment. The joint is positioned in the vicinity of a support point, not at mid span. On long runs expansion joints are provided, with reference to thermal variations of the order of 60-70 K on the roof. The aluminium construction ensures electrochemical compatibility with the profile and resistance to atmospheric corrosion.

Who it suits

Suitable when you have panel rows longer than a single rail - large hall roofs, continuous fields - or when you want to extend later a structure that is already installed.

Terms explained

• Splice / rail connector: The part that is inserted into the ends of two rails and makes them work as a single one.
• Bending moment: The tendency of the rail to bend under weight, snow and wind; the joint must be rigid enough to take up this stress as well.
• Expansion joint: An interruption left intentionally along the rail run, so that the metal can lengthen in summer and shorten in winter without forcing the fixings.

Technical specifications

Recommended applications

• Extending the aluminium rails on long module rows
• Building continuous photovoltaic fields on large roofs
• Reducing material losses compared with cutting profiles to length
• Later extension of an existing mounting system

Technical details

Generic product — standard specifications

Aluminium splice element intended for extending H-type profiles, by coupling two rails end to end. The connector is inserted partially into each of the two profiles and fixed with screws, so that the joint transmits the bending moment and behaves like a continuous rail, not like two hinged sections.

Using the connector allows large spans to be covered without using profiles in unusual lengths and reduces material loss at cutting. The basic rule at installation is that the joint should not be placed in the middle of a span between two support points, but as close as possible to a support (hook, adapter or fixing foot), so that the zone with maximum bending stress does not coincide with the joint zone.

Also, on long runs compensation for the thermal expansion of the aluminium must be provided: with temperature variations of the order of 60-70 K on the roof, a long rail changes its length noticeably, and the lack of expansion joints generates deformations and stresses at the anchoring points. The aluminium construction ensures electrochemical compatibility with the profile and resistance to atmospheric corrosion.