IEC 61479 pdf download

IEC 61479 pdf download Live working – Flexible conductor covers (line hoses) of insulating material
scope
This International Standard is applicable to flexible insulating covers (line hoses) for theprotection of workers from accidental contact with live or earthed electrical conductors and forthe avoidance of short circuits during live working.
1.1Classes
Five classes of conductor covers，differing in electrical characteristics，are provided anddesignated as class 0, class 1, class 2, class 3, and class 4.
1.2Categories
Six categories of conductor covers differing in composition and properties are provided:category A – acid resistant,category H – oil resistant,category C – formulated for extreme lowtemperature environments,category w – formulated for extreme high temperature environ-ments, category Z- ozone resistant, and category P – formulated for humid environment.
NOTE Types ll and ll material of ASTM D-1050 would be category z.
1.3Styles
Various styles of conductor covers,differing in construction characteristics are available andsix of these are designated as style A, style B, style C, style D, style E, (see figure 1), andstyle F.
2 Normative references
The following referenced documents are indispensable for the application of this document.For dated references, only the edition cited applies. For undated references, the latest editionof the referenced document (including any amendments) applies.
IEC 60050(151):1978,International Electrotechnical Vocabulary (IEV) – Chapter 151:Electrical and magnetic devices
lEC 60050(212):1990,International Electrotechnical Vocabulary(IEV) – Chapter 212:lnsulating solids,liquids and gases
IEC 60050(601):1985,International Electrotechnical Vocabulary (IEV) – Chapter 601:Generation,transmission and distribution of electricity – General
IEC 60050(651):1999，International Electrotechnical Vocabulary (IEV) – Chapter 651:Liveworking
IEC 60060-1:1989，High-voltage test techniques – Part 1: General definitions and testrequirements
IEC 60060-2:1994,High-voltage test techniques – Part 2: Measuring systems
IEC 60212:1971,Standard conditions for use prior to and during the testing of solid electricalinsulating materials
IEC 60417(all parts),Graphical symbols for use on equipment
IEC 61318:1994,Live working – Guidelines for quality assurance plansISO 472:1999,Plastics – Vocabulary
ISo 1817:1999，Rubber， vulcanized – Determination of the effect of liquids
ISO 2592:2000, Determination of flash and fire points – Cleveland open cup method
ISO 2859-1:1999，Sampling procedures for inspection by attributes – Part 1: Samplingschemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
ISO 2977:1997，Petroleum products and hydrocarbon solvents – Determination of anilinepoint and mixed aniline point
ISO 3104:1994，Petroleum products – Transparent and opaque liquids – Determination ofkinematic viscosity and calculation of dynamic viscosity
Iso 9001:1994，Quality systems – Model for quality assurance in design，development,production,installation and servicing
ISO 9002:1994,Quality systems – Model for quality assurance in production, installation andservicing
Iso 9003:1994,Quality systems – Model for quality assurance in final inspection and test
Definitions
For the purpose of this International Standard, the following definitions apply.
3.1
protective cover
rigid or flexible cover made of insulating material used to cover energized andlor dead partsand/or adjacent earthed (grounded) parts in order to prevent contact
NOTE A protective cover is generally designed to provide a required insulation level which makes it able toprovide protection only when a workerinadvertently comes into contact with the protective cover and for only ashort duration.
[IEV651-04-01, modified]