Práce pod napětím

Oblast zaměření: Práce pod napětím
Komise : IEC/TC 78 (Live working)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 20.08.2019
Zobraz více Zobraz méně
 

This part of IEC 61472-2 specifies a method for determining the minimum approach distance for live working,  for  AC systems  1  kV up  to  and  including  72,5 kV,  required  to  protect  workers  from  system overvoltages. This standard addresses system overvoltages, and the working air distances between equipment and/or workers at different potentials.

The required withstand voltage and minimum approach distances determined by the method described in this standard are recommended for use only if the following working conditions prevail:

< > are trained for, and skilled in, working live lines or close to live conductors or equipment;< > operating conditions are adjusted so that the statistical overvoltage does not exceed the value selected for the determination of the required withstand voltage;< > overvoltages are the determining overvoltages;< > insulation has no continuous film of moisture present on the surface;< > lightning is observed within 10 km of the work site;< > is made for the effect of conducting components of tools;

NOTE 1 In some countries, special procedures have been developed to permit live working with surface moisture on tools at distribution voltages (below 50 kV).

Oblast zaměření: Práce pod napětím
Komise : IEC/TC 78 (Live working)
Původce: ISO\IEC\CEN\CENELEC
K připomínkám do: 20.08.2019
Zobraz více Zobraz méně
 

This International Standard specifies the requirements and testing for PPE footwear used as electrical insulating footwear and overboots that provide protection of the worker against electric shock and used for working live or close to live parts on installations up to 36 000 V AC or 25 000 V DC.

The products designed and manufactured according to this standard contribute to the safety of the users provided they are used by skilled persons, in accordance with safe methods of work and the instructions for use.

Antistatic, electrical shock resistant and conductive footwear are not covered by this standard.

NOTE            Part  2  Electrical  Shock  Resistant  Footwear  and  Part  3 Conductive  Footwear  for  Live Working  are  in development.