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Dry type Distribution Transformer UL
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Product Details
Place of Origin: | China | Usage: | Power | Phase: | Three |
Coil Number: | Autotransformer | Coil Structure: | Toroidal |
Product Description
JST was launched on NASDAQ in the United States in 1998.
The factory was built in Haikou, China in 1993.
The company will be listed on China's A-share market in 2021(Stock code 688676).
Cast Resin Dry Type Transformers
JST Power Equipment is more than a manufacturer – we are a solutions innovator at the cutting edge of transformer technology. We continually work to create products with higher efficiencies and lower costs. Each year we make substantial investments in the research and development of new products and manufacturing techniques. We regularly innovate on behalf of our customers, collaborating with them to find solutions to their specific challenges. Explore JST’s Cast Resin Transformers.
Cast Resin Transformers. The Best Choice for Your Application Needs.
While the term “dry type” transformer is often used only to refer to transformers processed with varnish and cured in ovens, such as VPI transformers, Cast Resin Transformers are also dry type transformers. Cast Resin Transformers are highest on the evolutionary scale of transformer design and offer the best combination of electrical and mechanical performance factors. Cast Resin Transformers offer higher performance than other dry type transformers and do not present the environmental risks, safety and hazards found in liquid filled transformers.
Available up to 45 MVA, 40.5kV, Cast Resin Transformers provide the best lifetime values and meet both GB/T1094, IEC 60076-11, UL1562, and IEEE Std C57.12.01 requirements.
• Low Maintenance: As companies continue to look for ways to reduce their O&M expenses,
Cast Resin Transformers provide instant savings considering there is no oil to sample or Doble testing of bushings.
The only required routine maintenance of Cast Resin transformers is occasional visual inspections.
• Eco-Friendly: Lack of oil in the design makes them ideal for environmentally sensitive areas or places where oil
would be a risk (buildings, marine, etc.).
• Safety: The design of Cast Resin Transformers is inherently safe as the unit is flame-retardant, self-extinguishing,
and produces no toxic by-products.
• Very High Short-Term Overload
Capacity: Cast Resin Transformers are able to handle short-term overloads due to the inherent strength of the resin and fiberglass encapsulation and a long thermal time constant.
This allows them to handle the axial and radial forces associated with overload conditions.
• Space Savings: Cast Resin Transformers are a compact design and, when coupled
with the elimination of oil containment structures, fire suppression systems and coolers provide meaningful on-site
space savings.
• Low Noise Levels: By the nature of the design, Cast Resin Transformers are more compact and have lower noise.
• Designed for Use in Harsh Environments: Cast Resin Transformers provide the maximum protection from
moisture, particulates and pollution and can survive in some of the harshest environments in the marketplace
JST Power Equipment is one of the largest manufacturers of Cast Resin Transformers in the world, able to design, test and build trans- formers to meet some of the mostchallenging applications in the market today. Our teams of engineers have been leading the industry for over 25 years in terms of technology advancements,qualityandcustomersupport.
We build Cast Resin Transformers for a wide array of applications, sizes and configurations.
Currently we are able to build units up to 45MVA, 40.5kVA and 200 kV BIL
• Primary and Secondary Cast Resin Transformer Construction
• Aluminum or Copper Windings
• Standard ANSI 61 Gray Powder Paint Enclosures
• Easy Access Terminal Taps
• Multiple and Customer Bus Configurations Available
• Highest Quality Grain Oriented Steel
• 80° and 115°C Temperature Rise Options
• 180C Class H UL Listed Insulation System
• UL and cUL Listings
• 50 or 60 Hz
JST provides a wide array of options when it comes to enclosures to help you meet your system needs. JST enclosures are designed to meet all requirements of CSA and UL 50
Standard Cast Resin Transformer Data
Dimensions and Weights Three-Phase State-of-the-art manufacturing systems are used throughout JST’s entire operations. First is a detailed computer-aided design defining the entire transformer and all of its components in exact detail with CAD optimized designs.
Typical Cast Resin Transformer Impedance Ranges
Voltage | <2000 kVA | >2000 kVA |
4.16kV | 4.0-6.0% | 6.0-7.0% |
8.8kV | 4.5-6.5% | 6.0-8.0% |
15kV | 5.5-7.0% | 6.5-8.0% |
27kV | 6.5-7.5% | 7.0-8.5% |
38kV | 6.5-7.5% | 7.0-8.5% |
Cast Resin Transformer Basic Impulse Level (BIL)
Voltage | Standard | Available Options |
4.16kV | 30kV | 45kV / 60kV |
8.8kV | 45kV | 60kV / 95kV |
15kV | 60kV | 95kV / 110kV |
27kV | 110kV | 125kV / 150kV |
38kV | 150kV | 200kV |
The core is the heart of the transformer.
Using first-class equipment, advanced processes and high- quality material, our
core is high grade quality, and greatly reduces no load losses and the noise of
the transformer.
We fully-automatic silicon
steel sheet cutter. Operating under computer program controls, it has a high
cutting precision with no burrs, and has the function of multi-end feeding,
automatic stacking collection and step lap. It can reduce the amount of
vibration during cutting, so that the crystal grain structure is maintained
with less variation of finished silicon steel sheet
Our core has an approximate circular section. Silicon steel sheets are cut fully-oblique at 45°. The joint between core column and top yoke is a step lap structure. These measures improve the mag- netic field distribution of the core and reduce the consumption of materials and energy.
We also utilize a core inverting/lap/assembling table. It assembles the core column and yoke iron into an epsilon – shaped core, and significantly improves the processing quality and production efficiency of the core
The computer-controlled HV automatic winding machines apply and maintain constant tension during the automatic winding process.
S4Xe and P4Xe are some of the advanced CNC machines utilized by JST, which makes small batch production pattern possible.
The winding is then moved safely to the pre- heating casting chamber to dry after preheating, removing any moisture/gas in the insulation.
Meanwhile, the imported chemical materials (e.g. epoxy resin and hardener) are continuously prepared in separate vessels. After the prepara- tion is finished, all the materials are pumped into a static mixer at the ratio preset by the precise computer measuring system, and then cast
into the molds. The casting chamber utilizes an oil diffusion pump to create the vacuum levels sufficient to ensure a perfectly void free casting. After the completion of casting, the coils are cured in an oven to form strong solid coils under high temperatures.
We adopt state-of-the-art casting equipment, which applies patented technologies (e.g. thin- film deaeration and static mixing). The static mixing technology is significantly superior to dynamic mixing, yielding consistent physical/ chemical properties of material mixture (e.g. viscosity and chemical reaction degree).
Contact Us
- Hainan Jinpan Smart Technology Co., Ltd.
- Contact nameSong
- Phone86-188-98965823
- AddressLonghua Haikou,Hainan
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