Cover fixing
Description
Perforated Cable Trays with single ribs PFL type are designed and manufactured in accordance with the standard CEI EN 61537 Class 23-76 and can be manufactured made of:
- carbon steel S235JR (reference standard UNI EN 10025) hot dip galvanized after working according to ISO 1461
- stainless steel AISI 304
- stainless steel AISI 316 sendzimir S250GD Z200 (reference standard UNI EN 10147).
Perforated cable trays with single ribs PFL type are obtained by cold-profiling of coils.
Bending radii of special pieces take into consideration the CEI 11-17 standard, which settles the minimum bending radius according to cable’s diameter; on request, we can supply different bending radii.
Standard covers are plane type and 1.00 mm thick.
On request, higher thickness can be manufactured as well as flowing type covers.
Perforated Cable trays with single ribs PFL type have been tested through strict tests, to define the maximum admissible load (SWL – Safe Working Load) in compliance with the CEI EN 61537 standard; please find herewith enclosed the diagrams which define, according to the distance between supports, the maximum admissible distributed load (UDL – Uniformly Distributed Load).
Perforated Cable Trays with single ribs PFL type have been tested to verify the electrical continuity in accordance with CEI EN 61537 standard.
The test consists in the passage all along the elements of a 25A electric current, with a frequency between 50 and 60 Hz; the voltage drop must be measured both through the joint and on the whole tray, therefore:
- between two points, 50 mm away from each side of the joint;
- between two points, on one side 500 mm away from the joint.
The measured impedances shouldn’t exceed 50 mΩ through the joint and 5 mΩ per metre without the joint.
The test has been carried out on two straight elements connected by one joint fixed by 8 cup square screws M6x12.
ADDRESS
Uff. Amm.vi e Stabilimento: Via Finati, 6 - 44124 FERRARA – ITALY
PHONE
Informative
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