Test procedure for evaluation and classification of insulation systems for direct-current machines.
Chicago-čujuhus (17. p.)Test Procedure for Evaluation and Classification of Insulation Systems for Direct-current Machines.
MLA-čujuhus (9. p.)Test Procedure for Evaluation and Classification of Insulation Systems for Direct-current Machines.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.