Skip to main content
Back

EVS-EN 60034-18-31:2012

Rotating electrical machines - Part 18-31: Functional evaluation of insulation systems - Test procedures for form-wound windings - Thermal evaluation and classification of insulation systems used in rotating machines

General information

Valid from 03.10.2012
Base Documents
IEC 60034-18-31:2012; EN 60034-18-31:2012
Directives or regulations
None

Standard history

Status
Date
Type
Name
This part of IEC 60034 describes thermal endurance test procedures for classification of insulation systems used in a.c. or d.c. rotating electrical machines with indirect cooling and form-wound windings. The test performance of a candidate insulation system is compared to the test performance of a reference insulation system with proven service experience. The test procedures described in IEC 60034-18-31 are intended to compare the thermal endurance performance of the mainwall insulation between conductor(s) and ground and, where required by the design of the coil or bar, the insulation between the turns. The test is not intended to simulate the in-service mechanical stresses experienced by the endwinding bracing or support materials. It does not include the evaluation of thermomechanical deterioration by expansion and contraction of insulation during temperature cycling. IEC 60034-18-1 describes general testing principles applicable to thermal endurance testing of insulation systems used in rotating electrical machines. The principles of IEC 60034-18-1 are followed unless otherwise stated in IEC60034-18-31. The thermal class for the insulation system refers to its maximum allowed (“hot spot”) temperature. The average temperature measured in service should not exceed the allowed temperature rise according to IEC 60034-1.

Required fields are indicated with *

*
*
*
PDF
24.40 € incl tax
Paper
24.40 € incl tax
Browse standard from 2.44 € incl tax
Standard monitoring

Customers who bought this item also bought

Main

EVS-EN 60034-18-34:2012

Rotating electrical machines - Part 18-34: Functional evaluation of insulation systems - Test procedures for form-wound windings - Evaluation of thermomechanical endurance of insulation systems
Newest version Valid from 05.09.2012
Main

EVS-EN 60034-18-41:2014

Rotating electrical machines - Part 18-41: Partial discharge free electrical insulation systems (Type I) used in rotating electrical machines fed from voltage converters - Qualification and quality control tests
Newest version Valid from 01.07.2014
Main

EVS-EN 60034-18-42:2017

Rotating electrical machines - Part 18-42: Partial discharge resistant electrical insulation systems (Type II) used in rotating electrical machines fed from voltage converters - Qualification tests
Newest version Valid from 16.06.2017
Main

CLC/TS 60034-18-33:2011

Rotating electrical machines - Part 18-33: Functional evaluation of insulation systems - Test procedures for form-wound windings -Multifactor evaluation by endurance under simultaneous thermal and electrical stresses
Newest version Valid from 04.05.2011