magnifying icon Basket
1 item ^

Basket is empty
Login

Login

LOGGED AS

Help

Satisfaction enquiry

SATISFACTION ENQUIRY

Newsletter

Free of charge lifelong learning "Standardization"

FREE OF CHARGE LIFELONG LEARNING "STANDARDIZATION"

Standardisation

Draft standards in public enquiry

DRAFT STANDARDS IN PUBLIC ENQUIRY

Standards organizations

STANDARDS ORGANIZATIONS

  • National standards

  • European standards

  • International standards


Deliverable

 
Free preview
Price
Language
 
IEC 60071-2 Ed.4.0 Edition 03/2018
Insulation co-ordination - Part 2: Application guidelines
  •   
  •  
  • 391.1 / copy
  •  
 

Abstract

IEC 60071-2:2018 constitutes application guidelines and deals with the selection of insulation levels of equipment or installations for three-phase electrical systems. It gives guidance for the determination of the rated withstand voltages for ranges I and II of IEC 60071-1 and to justify the association of these rated values with the standardized highest voltages for equipment. It covers three-phase systems with nominal voltages above 1 kV. This edition includes the following significant technical changes with respect to the previous edition:
a) the annex on clearance in air to assure a specified impulse withstand voltage installation is deleted because the annex in IEC 60071-1 is overlapped;
b) 4.2 and 4.3 on surge arresters are updated;
c) 4.3.5 on very-fast-front overvoltages is revised. Annex J on insulation co-ordination for very-fast-front overvoltages in UHV substations is added;
d) Annex H on atmospheric correction – altitude correction is added.
e) Annex I on evaluation method of non-standard lightning overvoltage shape is added.
It has the status of a horizontal standard in accordance with IEC Guide 108.

Status

Standard - Active

Origin

Technical Committee :
99 : Insulation co-ordination and system engineering of high voltage electrical power installations above 1,0 kV AC and 1,5 kV DC

Implementation

start of the vote on the project      date of ratification (dor)   
end of the vote on the project      date of anouncement (doa)   
start of the vote on the final project      date of publication (dop)   
end of the vote on the final project      date of withdrawal (dow)   


Publication Official Journal
of the Grand-Duchy of Luxembourg
Reference

Relations

Evolutions
IEC 60951-3 Ed.3.0 RLV
IEC 60071-2 Ed.5.0

Relations to older standards
IEC 60071-2 Ed. 3.0
IEC 60071-2 Ed. 3.0
IEC 60071-2 Ed. 3.0

International Classification for Standards (ICS codes) :

29.080.30 : Insulation systems

magnifying icon Basket
1 item ^

Basket is empty


Warning:
DIN standards can be downloaded only once! After downloading, they are no longer available in the eLibrary.
Begin download?