What is PD CLC/TS 50703-1 about?
PD CLC/TS 50703-1 is the first part of multiple series that defines the requirements and testing for joints of metal sheets, with or without insulating coatings, used as natural components in roofs, facades or walls of buildings, suitable to conduct lightning current in LPS where the interconnection of these metal sheets does not ensure durable electrical connection.
NOTE-
PD CLC/TS 50703-1 does not deal with the lightning interception capabilities of these components. The connection clamps for connecting the metallic sheet with the down conductor to the earth termination system are LPSC, tested according to EN 625611.
Who is PD CLC/TS 50703-1 for?
PD CLC/TS 50703-1 on metal sheets' joints used in LPS is useful for:
- Construction industry
- Civil engineer
- Architect
- Workers
- Maintainer of building
- The installer, manufacturer of metal sheet
- Building contractor
Why should you use PD CLC/TS 50703-1?
Joints of metal sheets are the electrical and mechanical connections between metal sheets with or without insulating coating (e.g., by means of welding, brazing or soldering), which allows no relative movement of metal sheets due to thermal expansion and to environmental load, e.g., snow, ice, wind where the interconnection of these metal sheets does assure durable electrical connection.
PD CLC/TS 50703-1 specifies requirements for designing joints of metal sheets in such a manner that when they are installed according to your instructions, their performance shall be reliable, stable and safe to persons and surrounding equipment.
PD CLC/TS 50703-1 provides general requirements for laboratory test reports. It is intended to promote clear, complete reporting procedures for laboratories submitting test reports.
PD CLC/TS 50703-1 defines the requirements and testing for joints of metal sheets, with or without insulating coatings, which can be used as natural components in roofs, facades or walls of buildings, suitable to conduct lightning current in LPS where the interconnection of metal sheets does not ensure durable electrical connection.
What’s changed since the last update?
PD CLC/TS 50703-1 supersedes PD CLC/TS 507031:2019, which is withdrawn.
PD CLC/TS 50703-1 includes the following significant changes with respect to the previous edition:
- Precise terms/definitions are given for the reader to understand and distinguish the under-discussion types of the joints of metal sheets
- Conditioning tests have been added which contribute significantly to the lightning current capability
- Two new classifications have been added as per the ability of the joints of metal sheets to withstand the lightning current with or without perforation
- Table 1– clarifications that are more precise are given for parameters of the test current
- Requirements for approved measuring system have been added under clause 7.9
