公开(公告)号：US20170321378A1

公开(公告)日：2017-11-09

申请号：US15520028

申请日：2015-10-16

Applicant: ABB Schweiz AG

Inventor： Claire Pitois ,  Elson Montibon ,  Fredrik Sahlen ,  Lars Schimdt ,  Orlando Girlanda ,  Torbjorn Brattberg ,  Lars Wagberg

IPC: D21H17/36 ,  H01B3/44 ,  D21H17/37 ,  H01B3/52 ,  H01B3/18 ,  D21J1/20 ,  D21H17/56 ,  H01F27/32 ,  H01F27/00 ,  D21H17/00

CPC classification number: D21H17/36 ,  D21H17/00 ,  D21H17/375 ,  D21H17/56 ,  D21J1/20 ,  H01B3/185 ,  H01B3/447 ,  H01B3/448 ,  H01B3/52 ,  H01F27/00 ,  H01F27/32

Abstract: A cellulose based pressboard for insulation in an electrical power transformer, the pressboard includes polyvinylamine (PVAm), and polyacrylamide (PAM), in a combined amount of between 0.01% and 20% by weight of the pressboard.

公开(公告)号：US10351996B2

公开(公告)日：2019-07-16

申请号：US15520028

申请日：2015-10-16

Applicant: ABB Schweiz AG

Inventor： Claire Pitois ,  Elson Montibon ,  Fredrik Sahlen ,  Lars Schimdt ,  Orlando Girlanda ,  Torbjorn Brattberg ,  Lars Wagberg

IPC: H01F27/32 ,  D21H17/36 ,  D21H17/37 ,  D21J1/20 ,  H01B3/18 ,  H01B3/44 ,  H01B3/52 ,  D21H17/56 ,  D21H17/00 ,  H01F27/00

Abstract: A cellulose based pressboard for insulation in an electrical power transformer, the pressboard includes polyvinylamine (PVAm), and polyacrylamide (PAM), in a combined amount of between 0.01% and 20% by weight of the pressboard.