SIST EN 61478:2004
(Main)Live working - Ladders of insulating material
Live working - Ladders of insulating material
Is applicable to fully insulating spliced or hook ladders with extension or having a combination of insulating and conductive sections and used for live working on a.c. or d.c. electrical installations at 1 000 V and above for a.c. and 1 500 V and above for d.c. This standard concerns only ladders made of synthetic material. These ladders are used, to provide access, generally on overhead line structures and to facilitate live working, either hot stick, barehanded or a combination of both.
Arbeiten unter Spannung - Leitern aus isolierendem Material
Travaux sous tension - Echelles en matériau isolant
S'applique aux échelles entièrement isolantes (échelles à éléments emboîtables ou échelles à crochets avec rallonge) ou comportant une combinaison d'éléments conducteurs et d'éléments isolants et utilisées pour les travaux sous tension sur des installations électriques en courant alternatif ou continu ayant une tension nominale égale ou supérieure à 1 000 V en alternatif et à 1 500 V en continu. La présente norme ne concerne que les échelles réalisées en matériau synthétique. Ces échelles sont utilisées pour permettre l'accès généralement sur des supports de lignes aériennes et faciliter les travaux sous tension, que ce soit à distance, au potentiel, ou une combinaison des deux.
Delo pod napetostjo - Lestve iz izolacijskega materiala (IEC 61478:2001)
General Information
Relations
Overview
EN 61478:2001 - Live working: Ladders of insulating material is a European/CENELEC technical standard (identical with IEC 61478:2001) that applies to fully insulating spliced or hook ladders, including extension ladders and ladders with a combination of insulating and conductive sections. It covers ladders made of synthetic insulating material used for live working on a.c. installations at 1 000 V and above and d.c. installations at 1 500 V and above. These ladders are intended to provide access on overhead-line structures and to facilitate live-line techniques such as hot stick and barehanded work, or combinations of both.
Key Topics
- Scope and applicability - Defines ladder types covered (spliced, hook, extension, or mixed-section) and voltage thresholds for a.c. and d.c. live work.
- Material requirements - Limits the standard to ladders manufactured from synthetic insulating materials and addresses the need for sustained insulating performance.
- Design and construction - Principles for ladder geometry, splicing/hook assemblies, and combinations of insulating and conductive sections to support safe live working.
- Electrical and mechanical performance - Requirements to ensure adequate insulation and mechanical strength for safe use at specified voltages (including durability under service conditions).
- Marking and documentation - Expectations for user information, identification, safe-working recommendations, and maintenance instructions supplied with the ladder.
- Inspection and maintenance guidance - Principles for periodic checks, cleaning and storage to preserve insulating properties during service life.
Applications
EN 61478 is intended for practical use where live-line access and proximity are required:
- Maintenance and repair of overhead power lines and transmission structures
- Live working using hot sticks, barehand techniques, or combined methods
- Situations where insulated ladder access is required at or above the stated a.c./d.c. voltages
- Manufacture, procurement and certification of insulating ladders for utilities and contractors
Who uses this standard
- Utility companies and linemen performing live-line operations
- Manufacturers and testers of insulating ladders and accessories
- Safety managers, procurement officers and maintenance teams specifying compliant equipment
- Standards bodies and conformity assessment organizations validating ladder safety
Related Standards
EN 61478:2001 is aligned with IEC 61478:2001. For comprehensive live working programmes, EN 61478 should be used alongside other live-working and electrical-safety standards and employer procedures covering personal protective equipment, tools and work methods.
Keywords: EN 61478, ladders of insulating material, live working, insulating ladders, overhead line, hot stick, barehanded, electrical safety, synthetic insulating ladders, high voltage.
Frequently Asked Questions
SIST EN 61478:2004 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Live working - Ladders of insulating material". This standard covers: Is applicable to fully insulating spliced or hook ladders with extension or having a combination of insulating and conductive sections and used for live working on a.c. or d.c. electrical installations at 1 000 V and above for a.c. and 1 500 V and above for d.c. This standard concerns only ladders made of synthetic material. These ladders are used, to provide access, generally on overhead line structures and to facilitate live working, either hot stick, barehanded or a combination of both.
Is applicable to fully insulating spliced or hook ladders with extension or having a combination of insulating and conductive sections and used for live working on a.c. or d.c. electrical installations at 1 000 V and above for a.c. and 1 500 V and above for d.c. This standard concerns only ladders made of synthetic material. These ladders are used, to provide access, generally on overhead line structures and to facilitate live working, either hot stick, barehanded or a combination of both.
SIST EN 61478:2004 is classified under the following ICS (International Classification for Standards) categories: 13.260 - Protection against electric shock. Live working; 97.145 - Ladders. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 61478:2004 has the following relationships with other standards: It is inter standard links to SIST EN 61478:2004/A1:2004. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
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Standards Content (Sample)
SLOVENSKI STANDARD
01-februar-2004
Delo pod napetostjo - Lestve iz izolacijskega materiala (IEC 61478:2001)
Live working - Ladders of insulating material
Arbeiten unter Spannung - Leitern aus isolierendem Material
Travaux sous tension - Echelles en matériau isolant
Ta slovenski standard je istoveten z: EN 61478:2001
ICS:
13.260 9DUVWYRSUHGHOHNWULþQLP Protection against electric
XGDURP'HORSRGQDSHWRVWMR shock. Live working
97.145 Lestve Ladders
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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