CORE ARRANGEMENT, TRANSFORMER, METHOD FOR PRODUCING A CORE ARRANGEMENT AND METHOD FOR PRODUCING A TRANSFORMER
A core arrangement for a transformer is disclosed. The core arrangement comprises a plurality of core sheets. The core sheets have a thickness in the interval of 0.18-0.3 mm. The core sheets are attached to each other by means of an adhesive substance to make the core arrangement self-supporting.
1 . A core arrangement for a transformer, wherein the core arrangement comprises a plurality of core sheets, and wherein the core sheets are attached to each other by means of an adhesive substance, and wherein the core sheets have a thickness in the interval of 0.18-0.3 mm.
2 . The core arrangement according to claim 1 , wherein the attached core sheets make the core arrangement self-supporting.
3 . The core arrangement according to claim 1 , wherein said core sheets are in the form of stacked plates or strips.
4 . The core arrangement according to claim 1 , wherein the core sheets are made of steel.
5 . The core arrangement according to claim 1 , wherein the adhesive substance is any one out of at least one of a bonding varnish or an epoxy coating.
6 . The core arrangement according to claim 1 , wherein the adhesive substance is applied on at least one side of at least one of the core sheets.
7 . The core arrangement according to claim 1 , wherein the core sheets are attached to each other by means of the adhesive substance and a curing substance.
8 . A transformer comprising the core arrangement according to claim 1 .
9 . A method for producing a core arrangement for a transformer, wherein the core arrangement comprises a plurality of core sheets, the method comprising:
stacking the core sheets to form a core, wherein an adhesive substance is applied on at least one side of at least one of the core sheets; and
curing the stacked core sheets, and wherein the core sheets have a thickness in the interval of 0.18-0.3 mm.
10 . The method according to claim 9 , wherein the attached core sheets make the core arrangement self-supporting.
11 . The method according to claim 9 , wherein said core sheets are in the form of stacked plates or strips.
12 . The method according to claim 9 , wherein the core sheets are made of steel.
13 . The method according to claim 9 , wherein the adhesive substance is at least one of a bonding varnish or an epoxy coating.
14 . The method according to claim 9 , wherein the applying the adhesive substance on at least one side of at least one of the core sheets comprises applying the adhesive substance and a curing substance on at least one side of at least one of the core sheets.
15 . A method for producing a transformer, said method comprising producing a core arrangement according to claim 9 , wherein the method comprises:
moving a core to an assembly platform;
mounting at least one winding block to the core;
drying an active part, wherein the active part is the core and the at least one winding block; and
tanking the active part.
16 . The method according to claim 15 , further comprises removing temporary clamping means before or after the tanking.
17 . The method according to claim 15 , wherein tanking the active part comprises mounting of the active part in a transformer tank.
18 . The method according to claim 15 , wherein drying the active part comprises curing an adhesive substance that is applied to one or more core sheets of the core.
19 . The method according to claim 1 , wherein the adhesive substance includes an insulation property.
20 . The method according to claim 9 , wherein the adhesive substance includes an insulation property.