公开(公告)号：US3775628A

公开(公告)日：1973-11-27

申请号：US3775628D

申请日：1972-07-10

Applicant: ASEA AB

Inventor： ANDERSSON A ,  BJORKLUND A ,  VIRSBERG L

IPC: H01F3/00 ,  H01F5/06 ,  H01F27/32 ,  H02K3/30 ,  H02K3/32 ,  H02K3/40

CPC classification number: H02K3/32 ,  Y10T428/251 ,  Y10T428/2911

Abstract: A coil positioned in the slot of a stator or rotor of an electric machine is formed of a bundle of conductors arranged close together and insulated from each other and from the slot. The conductor insulation consists of corona resistant insulating material running longitudinally of the conductor and surrounding the parts of the conductors facing the main insulation which surrounds the bundle of conductors and also overlies at least those part of the faces of the conductors which face the adjacent conductors which parts are situated nearest the tape facing the main insulation. The tape is formed of a linear unbranched or branched polymer having such thermal stability that the dielectric strength of a film of the polymer 50 microns in thickness, after ageing in air at 155*C for 25,000 hours, is at least 50 percent of the dielectric strength before the ageing and of mica in the form of small flakes.

Abstract translation: 位于电机的定子或转子的槽中的线圈由彼此靠近并且彼此绝缘并且与槽隔离的一排导体形成。 导体绝缘体由耐导电绝缘材料构成，该绝缘材料沿导体纵向延伸，并且围绕导体束包围导体面向主绝缘体的导体部分，并且至少覆盖面向相邻导体的导体表面的那些部分。 部件位于最靠近主绝缘体的磁带上。 该带由具有这种热稳定性的线性无支链或支化聚合物形成，使得在空气中在155℃老化25,000小时后，厚度为50微米的聚合物膜的介电强度至少为电介质的50％ 老化前的强度和小片状云母。