Insulation Components of
Oil-immerg Transformer
Oil-immerg Transformer
Main Property Standard Value
Insulating components are made of 100% Electrical-grade pulp through special
designed moulds and processing methods or professional machines, which can ensure
application in oil-immersed power transformers for good mechanical strength and
insulation property.
designed moulds and processing methods or professional machines, which can ensure
application in oil-immersed power transformers for good mechanical strength and
insulation property.
Both of electrical and mechanical properties of insulating components depend on raw
materials quality and manufacturing methods. Different manufacturing methods will
result in different performance on final products.According to the diversities of
producing methods and techniques, insulation components can be classified into
three main categories: (1) special-shape parts molded by hands, (2) Molded
components by pressing and framing on machinery, (3) mechanical kits/components.
Special-shape parts are more complicated on shape-designs, such as Lead exits;
Components pressed & moulded by machinery, like clamps, angle rings, are made by
molds without adding any adhesive and additive; Mechanical kits/components are
made through processing of laminated boards into different parts.
materials quality and manufacturing methods. Different manufacturing methods will
result in different performance on final products.According to the diversities of
producing methods and techniques, insulation components can be classified into
three main categories: (1) special-shape parts molded by hands, (2) Molded
components by pressing and framing on machinery, (3) mechanical kits/components.
Special-shape parts are more complicated on shape-designs, such as Lead exits;
Components pressed & moulded by machinery, like clamps, angle rings, are made by
molds without adding any adhesive and additive; Mechanical kits/components are
made through processing of laminated boards into different parts.
The quality of insulation components should be conformed with the following standards:
1、Requirements on appearance
The dimension should be in conformity with design drawings;
The inside and outside surfaces of moulded parts should be flat and free of
delamination, cracks, ruptures, convex-concave,polluted spots, bubbles and holes.
and its transverse section should be smooth and free of burrs and carbonization.
The surface of Mechanical kits/components must be smooth and free of defects like
convex-concave, bubbles, polluted spots, etc; and the glue or adhesive must be even
and free of bursting, bubble, degumming and delaminations. All processed sections
must be smooth, no convex-concave and cracks more than 0.2mm, no carbonization,
no color difference due to density and processing.
Color of components should be natural as raw material, but part of shades deviation
caused by repairing under 30square millemeter per area are allowed. Burled depth is not exceeding 30% of the thickness. No burling marks on components with thickness less than 2 mm.
The inside and outside surfaces of moulded parts should be flat and free of
delamination, cracks, ruptures, convex-concave,polluted spots, bubbles and holes.
and its transverse section should be smooth and free of burrs and carbonization.
The surface of Mechanical kits/components must be smooth and free of defects like
convex-concave, bubbles, polluted spots, etc; and the glue or adhesive must be even
and free of bursting, bubble, degumming and delaminations. All processed sections
must be smooth, no convex-concave and cracks more than 0.2mm, no carbonization,
no color difference due to density and processing.
Color of components should be natural as raw material, but part of shades deviation
caused by repairing under 30square millemeter per area are allowed. Burled depth is not exceeding 30% of the thickness. No burling marks on components with thickness less than 2 mm.
2、Requirements on machining property
The components should be endurable to mechanical process, such as shearing, drilling
and milling . They should be free of cracks, ruptures and carbonizing discolor caused
by processing.
The components should be endurable to mechanical process, such as shearing, drilling
and milling . They should be free of cracks, ruptures and carbonizing discolor caused
by processing.
3、Requirements on binding/adhesive agent
During the production process, the binding/adhesive agent required must perform very
well in adhesiveness, thermal resistance, aging resistance and compatibility with
transformer oil meanwhile be free of pollution to transformer oil.
well in adhesiveness, thermal resistance, aging resistance and compatibility with
transformer oil meanwhile be free of pollution to transformer oil.
4、Physics and chemistry property of components should conform to the standard as follow:
all of insulations material for electrical switch motor transformer http://www.weielectric.com email:salefibre@yahoo.com TEL:0512-67081529 WhatApp:086-15950042209 FAX:0512-65256838
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