IEC 60855-1-2016 pdf download.Live working – Insulating foam-filled tubes and solid rods – Part 1: Tubes and rods of a circular cross-section.
This part of IEC 60855 is applicable to insulating foam-filled tubes and solid rods, of a circular cross-section, made of synthetic materials with reinforced fibreglass and intended to be used in the manufacture and construction of tools, devices and equipment for carrying out live working on electrical systems operating at voltages above 1 kV. Foam-filled tubes and solid rods of cross-section other than circular and/or made with material other than synthetic materials with reinforced fibreglass are not covered by this part of IEC 60855.
2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 60060-1 , High-voltage test techniques – Part 1: General definitions and test requirements
IEC 60060-2, High-voltage test techniques– Part 2: Measuring systems
IEC 6021 2:201 0, Standard conditions for use prior to and during the testing of solid electrical insulating materials
IEC 61 31 8, Live working – Conformity assessment applicable to tools, devices and equipment
3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 61 31 8 and the following apply.
3.1 foam insulating material composed of closed cells, generally made of polyurethane, used to prevent the ingress and migration of moisture Note 1 to entry: Foam is the inner support to manufacture the foam-filled tubes covered by this part of IEC 60855. [SOURCE: IEC 60050-651 :201 4, 651 -22-03, modified – The note has been changed to refer specifically to the foam filled tubes covered by this part of IEC 60855.]
3.2 insulating foam-filled tube foam-filled tube tube of uniform circular cross-section supplied in straight lengths, manufactured on a foam and constructed or formed of synthetic insulating rigid material with reinforced fibreglass
3.3 insulating solid rod
solid rod solid product of uniform circular cross-section supplied in straight lengths, constructed or formed of synthetic insulating rigid reinforced material [SOURCE: IEC 60050-651 :201 4, 651 -22-04, modified – The term and its definition have been changed to refer specifically to insulating solid rods covered by this part of IEC 60855.]
4 Requirements
4.1 Materials and design
Foam-filled tubes and solid rods shall be made of synthetic insulating material with reinforced fibreglass.
NOTE Yellow, orange and red are the preferred colours to indicate that the material has insulating properties.
If any coating is applied, it may be transparent or coloured.
The foam filling shall be bonded to the wall of the insulating tube, and neither the foam nor the bond shall be deteriorated during the tests, other than those tests which lead to destruction of the parts. The foam filling shall be free of voids, separations, cracks or other defects.
4.2 Electrical requirements
The material and the design of foam-filled tubes and solid rods shall have insulating properties.
The external surface of the foam-filled tubes and solid rods shall have hydrophobic properties.
4.3 Mechanical requirements
The material and the design of foam-filled tubes and solid rods shall have mechanical resistance properties.
4.4 Diameters of foam-filled tubes and solid rods
All measured diameters shall fall within the tolerance limits specified in Table 1 .IEC 60855-1 pdf download.