NEMA RE 2:1999
NEMA RE 2:1999 Electrical Insulating Varnish Includes definitions, constructions, and methods for determining the mechanical, thermal, and electrical performance characteristics of electrical insulating varnishes.
Table of Contents
ForewordScope
1Referencedstandardsanddefinitions
Referencedstandards
Definitions
2General
Generalinformation
Safetyprecautions
3Varnishadjustmentprocedure
General
Preparationoftestspecimens
4Productproperties
Requiredproductproperties
Additionalproperties
5Testmethods
Bondstrength-helicalcoilmethod
Bondstrength-twistedcoilmethod
Chemicalresistanceofelectricalinsulating
varnish
Dielectricbreakdownvoltage
Dielectricstrengthofsolventorsolventless
varnishes
Permittivity(dielectricconstant)anddissipation
factor
Dissipationfactor-varnishedmagnetwire
Flashpoint
Refrigerantresistance/extractibles
Geltime
Monomercontent
Nonvolatilematter-solventvarnishes
Specificgravity
Thermalaging-curvedelectrode
Thermalaging-non-enameledrectangularinsulated
magnetwire
Thermalaging-helicalcoil
Thermalaging-twistedcoil
Thermalaging-twistedpairs
Varnishcompatibility
Viscosity,Brookfield
Figures
5-1Testfixturesforbondstrengthtest
5-2Coilwinder
5-3Coiltwister
5-4Single-shotcurvedelectrodedetails
5-5Testspecimenforthermalagingshapedwire
Tables
5-1Wiretensionrequirements
5-2Recommendedexposureindayspercycle
5-3Testvoltages
5-4Prooftestvoltages