IEC 60895 pdf download – Live working – Conductive clothing for use at nominal voltage up to 800 kV a.c. and ± ±600 kV d.c.

IEC 60895 pdf download – Live working – Conductive clothing for use at nominal voltage up to 800 kV a.c. and ± ±600 kV d.c.

IEC 60895 pdf download – Live working – Conductive clothing for use at nominal voltage up to 800 kV a.c. and ± ±600 kV d.c.
This International Standard is applicable to conductive clothing,either assembled fromcomponent parts or forming a single complete clothing, worn by (electrically) skilled personsduring live working (especially bare-hand working) at a nominal power system voltage up to800 kv a.c.and r600 kv d.c.
lt is applicable to conductive jackets,trousers, coveralls (one-piece clothing), gloves or mitts,hoods, shoes, overshoe socks and socks.
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.
lEC 60050-151:2001, International Electrotechnical Vocabulary (IEV) – Part 151:Electrical andmagnetic devices
IEC 60050-651:1999,International Electrotechnical Vocabulary (IEV)- Part 651: Live working
IEC 60050-826:1982,International Electrotechnical Vocabulary (IEV) – Chapter 826:Elect-rical installations of buildings
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 60456:1998,Clothes washing machines for household use – Methods for measuring theperformance
IEC 60743:2001,Live working – Terminology for tools,equipment and devicesIEC 61318/TR2:1994,Live working – Guidelines for quality assurance plans
IEC 61477:2001,Live working – Minimum requirements for the utilization of tools, devices andequipment
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 3175:(all parts),Textiles – Professional textile cleaning and finishingIso 3290:2001,Rolling bearings – Balls – Dimensions and tolerances
ISO 6330:2000, Textiles – Domestic washing and drying procedures for textile testing
ISO 9000:2000, Quality management systems – Fundamentals and vocabulary
ISO 9001 :2000, Quality management systems – Requirements
ISO 9004:2000, Quality management systems – Guidelines for performance improvements
3 Terms and definitions
For the purposes of this International Standard, the following definitions apply.
NOTE Further information on terminology is illustrated in figure 1 .
conductive clothing
clothing made of natural or synthetic material with integral interwoven conductive fibres, or layers, used to provide electrical continuity between all parts of the clothing and a reduction of electric field
[IEC 60743, definition 8.2.7, modified]
conductive material
material composed of metallic threads or non-metallic conductive substances and natural orsynthetic threads closely woven, knitted, or layered
equipotential bonding lead (bonding lead)
flexible metallic connection used by the worker to connect or disconnect his or her conductiveclothing, bucket or screen, to or from another conductive part to create equipotential bondingNOTE 1 This lead is not an earthing device.
NOTE 2 The means of securing or connecting the lead shall be such that under emergency conditions,forexample.a fall, the lead can separate.
[IEV 651-07-07 , modified]
head cover (hood)
part of the clothing,either as a separate item or integrated into a complete garment,thatcovers the head
face screen for electrical works
protective device made of conductive, solid, or meshed material
NOTE lt provides electrical continuity with the conductive clothing of the worker and a reduction of electric field tothe face, or part thereof
[IEC60743,definition 8.4.3]
conductive overshoe sock
sock made of conductive material and worn over shoe/boot
main body of the clothing consisting of jacket and trousers
component parts
additional elements of the complete clothing such as gloves,socks, head protection,andfootwear worn in addition to the main garment and bounded to it
shielding efficiency
base log 10 of the ratio of a voltage without the conductive clothing to the voltage measuredat the spot with conductive clothing
screening efficiency
per cent ratio of the total current injected into the conductive clothing to the current flowing inthe body
equipotential bonding
electrical connection putting various exposed conductive parts and extraneous conductiveparts at a substantially equal potential
[IEV 826-04-09]
4Technical requirements
The conductive clothing shall constitute an electrically continuous assembly for the worker.
lf press studs, zip fasteners, hooks and eyes or any other method of fastening are used in theassembly of the complete clothing,care should be taken to ensure that the electricalconductivity of the clothing is not impaired.
Bonding lead shall be capable of withstanding anticipated electrical and mechanical stresses.
4.2Technical requirements for conductive material
The material used to manufacture the conductive clothing shall have the following properties.NOTE The material used to manufacture the conductive clothing should be resistant to abrasion and to tearing.
4.2.1 Flame retardancy
The material used in conductive clothing shall not ignite and continue to burn when exposedto an ignition source.
4.2.2Electrical resistance
This quality can be considered as a basic element which determines the current-carryingcapability and the spark-discharge properties of the material.