Material used for dry power transformer and its use method
A power transformer, dry-type technology, applied in the direction of transformer/inductor coil/winding/connection, plastic/resin/wax insulator, organic insulator, etc., can solve problems affecting the use of dry-type transformers, transformer cracking, uneven casting, etc. , to achieve the effect of improving short-circuit resistance, reducing expansion coefficient and improving thermal conductivity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Example Embodiment
[0032] Example 1:
[0033] The production of dry-type power transformers includes the following processes: coil winding process, coil drying process, coil casting process, coil demolding process, and coil curing process:
[0034] In the coil casting process:
[0035] 1. Mixing process: first heat the epoxy resin to 85°C, add fillers, curing agents, toughening agents, and accelerators in sequence, stir evenly to form a castable, epoxy resin: curing agent: toughening agent: accelerator: Coloring agent: filler (weight ratio) = 1:0.6:0.1:0.0001:0.01:1.
[0036] 2. Pouring process: Pouring is performed under the condition that the vacuum degree is 30Pa, the temperature is 95°C, and the time is 80 minutes.
[0037] In the casting process, an ultrasonic device with a wavelength of 40h and a power of 500W is installed under the coil.
Example Embodiment
[0038] Example 2:
[0039] The production of dry-type power transformers includes the following processes: coil winding process, coil drying process, coil casting process, coil demolding process, and coil curing process:
[0040] In the coil casting process:
[0041] 1. Mixing process: first heat the epoxy resin to 87°C, add fillers, curing agents, toughening agents, and accelerators in sequence, and stir evenly to form a castable. Epoxy resin: curing agent: toughening agent: accelerator: Coloring agent: filler (weight)=1:0.8:0.2:0.0002:0.02:1.1.
[0042] 2. Pouring process: Pouring is performed under the condition that the vacuum degree is 40 Pa, the temperature is 98 ℃, and the time is 90 minutes.
[0043] In the casting process, an ultrasonic device with a wavelength of 45h and a power of 750W is installed under the coil.
Example Embodiment
[0044] Example 3:
[0045] The production of dry-type power transformers includes the following processes: coil winding process, coil drying process, coil casting process, coil demolding process, and coil curing process:
[0046] In the coil casting process:
[0047] 1. Mixing process: first heat the epoxy resin to 90°C, add filler, curing agent, toughening agent, and accelerator in sequence, and stir evenly to form a castable. Epoxy resin: curing agent: toughening agent: accelerator: Dyeing agent: filler=1:1:0.3:0.0003:0.03:1.2.
[0048] 2. Pouring process: Pouring is performed when the vacuum degree is 50Pa, the temperature is 100°C, and the time is 100 minutes.
[0049] In the casting process, an ultrasonic device with a wavelength of 50h and a power of 1000W is installed under the coil.
[0050] The thickness of the insulating layer of the dry-type transformer prepared in Examples 1-3 is 2.5-4 mm, and the cracking rate of the insulating layer after 2 years of use is 0.1-0.2%.
PUM
Property | Measurement | Unit |
---|---|---|
Particle size | aaaaa | aaaaa |
Thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap