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Name:HV Moulded Components
Types:Assembly lead exits/L-shaped clamping insulatings/No-glued screw rods/nuts /Wet method angle rings/Wet method special-shaped parts/Insulation structural parts
Application:HV moulded components can be widely used in large-scale power transmission and transformation equipment such as EHV/UHV power transformers, reactors. Oil-immersftd power and distribution transformers.
HV Moulded Components are manufactured in a variety of processes from dry to wet sheet material and they can meet the highest requirements needed foruse in electric apparatus.
HV moulded components can be widely used in large-scale power transmission and transformation equipment such as EHV/UHV power transformers, reactors. Oil-immersftd power and distribution transformers.
| Types | Characteristics | |
| Assembly lead exits | Based on 100% imported electrical grade unbleached wood pulp, they have high purity, high tightness, high tensile strength, good electrical performance, uniform density, good absorption performance. relative dielectric constant and good compatibility with transformer oil. | |
| L-shaped clamping insulatings | ||
| No-glued screw rods/nuts | ||
| Wet method angle rings | Split an hedral rings | |
| Resolving anhedral rings | ||
| Wet method special-shaped parts | Lead angle ring piece | |
| Insulation barrel | ||
| Elbows and bins | ||
| Other wet-shaped pails | ||
| Insulation structural parts | Strips and spacers | |
| Corrugated cardboard | ||
| Electrostatic base ring | ||
| Iron yoke insulating end rings | ||
| Shield rings | ||
| Other structural parts | ||
Strips and Spacers are used between the coils and between the winding layers to provide properly precise oil passages.
Technical Data Sheet
| Performance | Unit | Index |
| Moisture | % | ≤7.0 |
| Density | g/cm 3 | 1. 15-1. 3 |
| Shrinkage in thickness direction | % | ≤6.0 |
| Shrinkage in other directions | % | ≤1.0 |
| Compression ratio | % | ≤4.0 |
The strips produced by our company mainly include:rectangular strips, T-shaped strips, dovetail strips, and special-shaped strips. The mechanical strength of dovetail stripss is higher than that of type strips, and it is not easy to crack. There is a tendency to replace strips.
Spacers made of high density boards with high short- circuit strength are used in windings. They can be supplied in the final milled state.Milled spacers and strips with rounded edges prevent damages to the
wireinsulation.
Dimensions(mm)
| Item | L | W | T | |
| T1 | T2 | |||
| Size | ≦220 | ≦80 | ≦30 | ≧2 |
| Tolerance | ±1 | ±1 | ±1.5 | ±1.5 |
Directly molded using high-quality wet paper blanks, the products have uniform density,flat surface,suitable for placing the insulation at the upper and lower edges of the coil parallel to the equipotential surface, which can shorten the insulation distance of the coil.
Dimensional Tolerance Unit：mm
| Size | W | H | R | T | |||
| <40 | >40 | 1 | 1.5 | 2 | |||
| Deviation | +2 | +2 | +3 | 5 | +0.2 | +0.3 | +0.4 |
| -2 | -2 | -3 | -5 | 0 | 0 | 0 | |
The lead angle rings are suitable for the upper and lower outlet parts of the coil, all of which are made by hand.
Dimensional Tolerance Unit：mm
| Size | H | H1 | B | D1 | D2 | D3 | d | K | R | r | δ | α1 | α2 |
| Deviation | 0 | 0 | 0 | 0 | ±2 | ±5 | 2 | ±3 | 4 | 10 | 1.5 | ±20 | ±20 |
| -3 | -3 | -3 | -5 | -1 | 0 | 0 | 0 |
Other wet-shaped parts can be customized according to customer drawings:
The “L” shaped clamping insulatings, commonly known as paper corner plate, are the ideal bracket and clamp insulation for oil immersed transformers. They have the characteristics of good insulation performance, high mechanical strength, and easy installation, in large transformers above 110KV, they exhibit advantages such as good straightness and less deformation, making them products that is difficult to replace with any other materials and also highly economical.
Note: Fixed holes and pressing plate parts can be punched or grooved, and users can customize according to their needs
Electrostatic base rings are used as core material for static wrapping metal strips, after high-precision shape processing, and carefully chamfer corners.
| Dimension(mm) | Outer diameter(d) | Width(w） | Thickness（T) |
| D≦3150 | ≧15 | ≦120 |
Used to support the end rings, they can also be made into a horseshoe shape.
| Dimension(mm) | Item | D | W | T1 | T2 |
| Gaskets | ≦3150 | ≧15 | ≦120 | – | |
| Spacers | – | – | – | ≦100 |
Shield rings are mainly used as the casing of the end coil, and can be processed into trapezoidal and open styles.
