APO RESEARCH · REPORT
Small Distribution Transformers
A small distribution transformer is a comparatively low-power transformer serving a local distribution duty, using magnetically coupled windings to establish the required AC voltage relationship.

Product & engineering
Understand the product.
The active assembly combines a magnetic core, insulated windings, mechanical supports and terminal connections. Liquid designs add a sealed or conservator-based tank and heat-transfer path; dry designs use solid winding insulation and reject heat to air. Pole, pad, ground and indoor installations have different terminal protection, enclosure, handling and maintenance interfaces. A compact footprint should be considered with those installed clearances.
Distribution units commonly reduce network voltage for local consumption, while a suitable generation-interface design can raise the voltage delivered by an inverter or generator. Wind, photovoltaic and rail applications must be mapped to the actual distribution function: a traction transformer or bulk grid-connection power transformer does not become a small distribution transformer simply because it serves the same industry.
Load cycle, no-load and conductor losses, winding connection, impedance and site environment define the operating duty. Inverter interfaces can additionally introduce harmonic and switching stresses. Apparent-power capacity should be reviewed at the specified thermal conditions, with any application-specific winding or insulation requirements included in the offered design.
What turns activity into demand
Identify the electrical interface and load history before comparing installation form or nominal size. The family covers complete transformers performing local distribution duty. It does not automatically include a whole compact substation, an inverter, a traction package or a large transmission transformer; those boundaries depend on the actual supplied assembly.
The commercial boundary
The family covers complete transformers performing local distribution duty. It does not automatically include a whole compact substation, an inverter, a traction package or a large transmission transformer; those boundaries depend on the actual supplied assembly.
Selected research
Market Analysis & Forecast
Global Small Distribution Transformers Market Analysis and Forecast 2026-2032
Market perspective
European Small Distribution Transformers include Siemens, Hitachi ABB Power Grids, Schneider Electric, Toshiba and TBEA, etc. Germany is the largest market, with a share about 22%, followed by Italy and UK with the share about 19% and 18%.
This report presents an overview of global market for Small Distribution Transformers, capacity, output, revenue and price. Analyses of the global market trends, with historic market revenue or sales data for 2021 - 2025, estimates for 2026, and projections of CAGR through 2032.
This report researches the key producers of Small Distribution Transformers, also provides the consumption of main regions and countries. Of the upcoming market potential for Small Distribution Transformers, and key regions or countries of focus to forecast this market into various segments and sub-segments. Country specific data and market value analysis for the U.S., Canada, Mexico, Brazil, China, Japan, South Korea, Southeast Asia, India, Germany, the U.K., Italy, Middle East, Africa, and Other Countries.
Read the full market overview
This report focuses on the Small Distribution Transformers sales, revenue, market share and industry ranking of main manufacturers, data from 2021 to 2026. Identification of the major stakeholders in the global Small Distribution Transformers market, and analysis of their competitive landscape and market positioning based on recent developments and segmental revenues. This report will help stakeholders to understand the competitive landscape and gain more insights and position their businesses and market strategies in a better way.
This report analyzes the segments data by Type and by Application, sales, revenue, and price, from 2021 to 2032. Evaluation and forecast the market size for Small Distribution Transformers sales, projected growth trends, production technology, application and end-user industry.
Small Distribution Transformers Segment by Company
Siemens
Hitachi ABB Power Grids
Schneider Electric
Toshiba
TBEA
GE
WEG
Imefy
Hyundai Electric
Winder Power
CG Global
CREAT
Small Distribution Transformers Segment by Type
Dry Type Distribution Transformers
Fluid-Immersed Distribution Transformers
Small Distribution Transformers Segment by Application
Wind Power
Photovoltaic
Rail Traffic
Others
Small Distribution Transformers Segment by Region
North America
United States
Canada
Mexico
Europe
Germany
France
U.K.
Italy
Russia
Spain
Netherlands
Switzerland
Sweden
Poland
Asia-Pacific
China
Japan
South Korea
India
Australia
Taiwan
Southeast Asia
South America
Brazil
Argentina
Chile
Middle East & Africa
Egypt
South Africa
Israel
Türkiye
GCC Countries
Study Objectives
1. To analyze and research the global status and future forecast, involving, production, value, consumption, growth rate (CAGR), market share, historical and forecast.
2. To present the key manufacturers, capacity, production, revenue, market share, and Recent Developments.
3. To split the breakdown data by regions, type, manufacturers, and Application.
4. To analyze the global and key regions market potential and advantage, opportunity and challenge, restraints, and risks.
5. To identify significant trends, drivers, influence factors in global and regions.
6. To analyze competitive developments such as expansions, agreements, new product launches, and acquisitions in the market.
Reasons to Buy This Report
1. This report will help the readers to understand the competition within the industries and strategies for the competitive environment to enhance the potential profit. The report also focuses on the competitive landscape of the global Small Distribution Transformers market, and introduces in detail the market share, industry ranking, competitor ecosystem, market performance, new product development, operation situation, expansion, and acquisition. etc. of the main players, which helps the readers to identify the main competitors and deeply understand the competition pattern of the market.
2. This report will help stakeholders to understand the global industry status and trends of Small Distribution Transformers and provides them with information on key market drivers, restraints, challenges, and opportunities.
3. This report will help stakeholders to understand competitors better and gain more insights to strengthen their position in their businesses. The competitive landscape section includes the market share and rank (in volume and value), competitor ecosystem, new product development, expansion, and acquisition.
4. This report stays updated with novel technology integration, features, and the latest developments in the market.
5. This report helps stakeholders to gain insights into which regions to target globally.
6. This report helps stakeholders to gain insights into the end-user perception concerning the adoption of Small Distribution Transformers.
7. This report helps stakeholders to identify some of the key players in the market and understand their valuable contribution.
Chapter Outline
Chapter 1: Introduces the report scope of the report, executive summary of different market segments (by type and by application, etc), including the market size of each market segment, future development potential, and so on. It offers a high-level view of the current state of the market and its likely evolution in the short to mid-term, and long term.
Chapter 2: Introduces the market dynamics, latest developments of the market, the driving factors and restrictive factors of the market, the challenges and risks faced by manufacturers in the industry, and the analysis of relevant policies in the industry.
Chapter 3: Small Distribution Transformers production/output of global and key producers (regions/countries). It provides a quantitative analysis of the production, and development potential of each producer in the next six years.
Chapter 4: Sales (consumption), revenue of Small Distribution Transformers in global, regional level and country level. It provides a quantitative analysis of the market size and development potential of each region and its main countries and introduces the market development, future development prospects, market space of each country in the world.
Chapter 5: Detailed analysis of Small Distribution Transformers manufacturers competitive landscape, price, sales, revenue, market share and industry ranking, latest development plan, merger, and acquisition information, etc.
Chapter 6: Provides the analysis of various market segments by type, covering the sales, revenue, average price, and development potential of each market segment, to help readers find the blue ocean market in different market segments.
Chapter 7: Provides the analysis of various market segments by application, covering the sales, revenue, average price, and development potential of each market segment, to help readers find the blue ocean market in different downstream markets.
Chapter 8: Provides profiles of key manufacturers, introducing the basic situation of the main companies in the market in detail, including product descriptions and specifications, Small Distribution Transformers sales, revenue, price, gross margin, and recent development, etc.
Chapter 9: North America by type, by application and by country, sales, and revenue for each segment.
Chapter 10: Europe by type, by application and by country, sales, and revenue for each segment.
Chapter 11: China by type, by application, sales, and revenue for each segment.
Chapter 12: Asia (Excluding China) by type, by application and by region, sales, and revenue for each segment.
Chapter 13: South America, Middle East and Africa by type, by application and by country, sales, and revenue for each segment.
Chapter 14: Analysis of industrial chain, sales channel, key raw materials, distributors and customers.
Chapter 15: The main concluding insights of the report.
More report detail
Tables and figures
Scope & coverage.
Types
- Dry Type Distribution Transformers
- Fluid-Immersed Distribution Transformers
Applications
- Wind Power
- Photovoltaic
- Rail Traffic
- Others
Companies covered
- Siemens
- Hitachi ABB Power Grids
- Schneider Electric
- Toshiba
- TBEA
- GE
- WEG
- Imefy
- Hyundai Electric
- Winder Power
- CG Global
- CREAT
Inside the report.
1 Market Overview
- 1.1 Product Definition
- 1.2 Small Distribution Transformers Market by Type
- 1.2.1 Global Small Distribution Transformers Market Size by Type, 2021 VS 2025 VS 2032
- 1.2.2 Dry Type Distribution Transformers
- 1.2.3 Fluid-Immersed Distribution Transformers
- 1.3 Small Distribution Transformers Market by Application
- 1.3.1 Global Small Distribution Transformers Market Size by Application, 2021 VS 2025 VS 2032
- 1.3.2 Wind Power
- 1.3.3 Photovoltaic
- 1.3.4 Rail Traffic
- 1.3.5 Others
- 1.4 Assumptions and Limitations
- 1.5 Study Goals and Objectives
2 Small Distribution Transformers Market Dynamics
- 2.1 Small Distribution Transformers Industry Trends
- 2.2 Small Distribution Transformers Industry Drivers
- 2.3 Small Distribution Transformers Industry Opportunities and Challenges
- 2.4 Small Distribution Transformers Industry Restraints
3 Global Small Distribution Transformers Production Overview
- 3.1 Global Small Distribution Transformers Production Capacity (2021-2032)
- 3.2 Global Small Distribution Transformers Production by Region: 2021 VS 2025 VS 2032
- 3.3 Global Small Distribution Transformers Production by Region
- 3.3.1 Global Small Distribution Transformers Production by Region (2021-2026)
- 3.3.2 Global Small Distribution Transformers Production by Region (2027-2032)
- 3.3.3 Global Small Distribution Transformers Production Market Share by Region (2021-2032)
- 3.4 North America
- 3.5 Europe
- 3.6 China
- 3.7 Japan
4 Global Market Growth Prospects
- 4.1 Global Small Distribution Transformers Revenue Estimates and Forecasts (2021-2032)
- 4.2 Global Small Distribution Transformers Revenue by Region
- 4.2.1 Global Small Distribution Transformers Revenue by Region: 2021 VS 2025 VS 2032
- 4.2.2 Global Small Distribution Transformers Revenue by Region (2021-2026)
- 4.2.3 Global Small Distribution Transformers Revenue by Region (2027-2032)
- 4.2.4 Global Small Distribution Transformers Revenue Market Share by Region (2021-2032)
- 4.3 Global Small Distribution Transformers Sales Estimates and Forecasts 2021-2032
- 4.4 Global Small Distribution Transformers Sales by Region
- 4.4.1 Global Small Distribution Transformers Sales by Region: 2021 VS 2025 VS 2032
- 4.4.2 Global Small Distribution Transformers Sales by Region (2021-2026)
- 4.4.3 Global Small Distribution Transformers Sales by Region (2027-2032)
- 4.4.4 Global Small Distribution Transformers Sales Market Share by Region (2021-2032)
- 4.5 North America
- 4.6 Europe
- 4.7 China
- 4.8 Asia (Excluding China)
- 4.9 South America, Middle East and Africa
5 Market Competitive Landscape by Manufacturers
- 5.1 Global Small Distribution Transformers Revenue by Manufacturers
- 5.1.1 Global Small Distribution Transformers Revenue by Manufacturers (2021-2026)
- 5.1.2 Global Small Distribution Transformers Revenue Market Share by Manufacturers (2021-2026)
- 5.1.3 Global Small Distribution Transformers Manufacturers Revenue Share Top 10 and Top 5 in 2025
- 5.2 Global Small Distribution Transformers Sales by Manufacturers
- 5.2.1 Global Small Distribution Transformers Sales by Manufacturers (2021-2026)
- 5.2.2 Global Small Distribution Transformers Sales Market Share by Manufacturers (2021-2026)
- 5.2.3 Global Small Distribution Transformers Manufacturers Sales Share Top 10 and Top 5 in 2025
- 5.3 Global Small Distribution Transformers Sales Price by Manufacturers (2021-2026)
- 5.4 Global Small Distribution Transformers Key Manufacturers Ranking, 2024 VS 2025 VS 2026
- 5.5 Global Small Distribution Transformers Key Manufacturers Manufacturing Sites & Headquarters
- 5.6 Global Small Distribution Transformers Manufacturers, Product Type & Application
- 5.7 Global Small Distribution Transformers Manufacturers Commercialization Time
- 5.8 Market Competitive Analysis
- 5.8.1 Global Small Distribution Transformers Market CR5 and HHI
- 5.8.2 2025 Small Distribution Transformers Tier 1, Tier 2, and Tier 3
6 Small Distribution Transformers Market by Type
- 6.1 Global Small Distribution Transformers Revenue by Type
- 6.1.1 Global Small Distribution Transformers Revenue by Type (2021-2032) & (US$ Million)
- 6.1.2 Global Small Distribution Transformers Revenue Market Share by Type (2021-2032)
- 6.2 Global Small Distribution Transformers Sales by Type
- 6.2.1 Global Small Distribution Transformers Sales by Type (2021-2032) & (Units)
- 6.2.2 Global Small Distribution Transformers Sales Market Share by Type (2021-2032)
- 6.3 Global Small Distribution Transformers Price by Type
7 Small Distribution Transformers Market by Application
- 7.1 Global Small Distribution Transformers Revenue by Application
- 7.1.1 Global Small Distribution Transformers Revenue by Application (2021-2032) & (US$ Million)
- 7.1.2 Global Small Distribution Transformers Revenue Market Share by Application (2021-2032)
- 7.2 Global Small Distribution Transformers Sales by Application
- 7.2.1 Global Small Distribution Transformers Sales by Application (2021-2032) & (Units)
- 7.2.2 Global Small Distribution Transformers Sales Market Share by Application (2021-2032)
- 7.3 Global Small Distribution Transformers Price by Application
8 Company Profiles
- 8.1 Siemens
- 8.1.1 Siemens Company Information
- 8.1.2 Siemens Business Overview
- 8.1.3 Siemens Small Distribution Transformers Sales, Revenue, Price and Gross Margin (2021-2026)
- 8.1.4 Siemens Small Distribution Transformers Product Portfolio
- 8.1.5 Siemens Recent Developments
- 8.2 Hitachi ABB Power Grids
- 8.2.1 Hitachi ABB Power Grids Company Information
- 8.2.2 Hitachi ABB Power Grids Business Overview
- 8.2.3 Hitachi ABB Power Grids Small Distribution Transformers Sales, Revenue, Price and Gross Margin (2021-2026)
- 8.2.4 Hitachi ABB Power Grids Small Distribution Transformers Product Portfolio
- 8.2.5 Hitachi ABB Power Grids Recent Developments
- 8.3 Schneider Electric
- 8.3.1 Schneider Electric Company Information
- 8.3.2 Schneider Electric Business Overview
- 8.3.3 Schneider Electric Small Distribution Transformers Sales, Revenue, Price and Gross Margin (2021-2026)
- 8.3.4 Schneider Electric Small Distribution Transformers Product Portfolio
- 8.3.5 Schneider Electric Recent Developments
- 8.4 Toshiba
- 8.4.1 Toshiba Company Information
- 8.4.2 Toshiba Business Overview
- 8.4.3 Toshiba Small Distribution Transformers Sales, Revenue, Price and Gross Margin (2021-2026)
- 8.4.4 Toshiba Small Distribution Transformers Product Portfolio
- 8.4.5 Toshiba Recent Developments
- 8.5 TBEA
- 8.5.1 TBEA Company Information
- 8.5.2 TBEA Business Overview
- 8.5.3 TBEA Small Distribution Transformers Sales, Revenue, Price and Gross Margin (2021-2026)
- 8.5.4 TBEA Small Distribution Transformers Product Portfolio
- 8.5.5 TBEA Recent Developments
- 8.6 GE
- 8.6.1 GE Company Information
- 8.6.2 GE Business Overview
- 8.6.3 GE Small Distribution Transformers Sales, Revenue, Price and Gross Margin (2021-2026)
- 8.6.4 GE Small Distribution Transformers Product Portfolio
- 8.6.5 GE Recent Developments
- 8.7 WEG
- 8.7.1 WEG Company Information
- 8.7.2 WEG Business Overview
- 8.7.3 WEG Small Distribution Transformers Sales, Revenue, Price and Gross Margin (2021-2026)
- 8.7.4 WEG Small Distribution Transformers Product Portfolio
- 8.7.5 WEG Recent Developments
- 8.8 Imefy
- 8.8.1 Imefy Company Information
- 8.8.2 Imefy Business Overview
- 8.8.3 Imefy Small Distribution Transformers Sales, Revenue, Price and Gross Margin (2021-2026)
- 8.8.4 Imefy Small Distribution Transformers Product Portfolio
- 8.8.5 Imefy Recent Developments
- 8.9 Hyundai Electric
- 8.9.1 Hyundai Electric Company Information
- 8.9.2 Hyundai Electric Business Overview
- 8.9.3 Hyundai Electric Small Distribution Transformers Sales, Revenue, Price and Gross Margin (2021-2026)
- 8.9.4 Hyundai Electric Small Distribution Transformers Product Portfolio
- 8.9.5 Hyundai Electric Recent Developments
- 8.10 Winder Power
- 8.10.1 Winder Power Company Information
- 8.10.2 Winder Power Business Overview
- 8.10.3 Winder Power Small Distribution Transformers Sales, Revenue, Price and Gross Margin (2021-2026)
- 8.10.4 Winder Power Small Distribution Transformers Product Portfolio
- 8.10.5 Winder Power Recent Developments
- 8.11 CG Global
- 8.11.1 CG Global Company Information
- 8.11.2 CG Global Business Overview
- 8.11.3 CG Global Small Distribution Transformers Sales, Revenue, Price and Gross Margin (2021-2026)
- 8.11.4 CG Global Small Distribution Transformers Product Portfolio
- 8.11.5 CG Global Recent Developments
- 8.12 CREAT
- 8.12.1 CREAT Company Information
- 8.12.2 CREAT Business Overview
- 8.12.3 CREAT Small Distribution Transformers Sales, Revenue, Price and Gross Margin (2021-2026)
- 8.12.4 CREAT Small Distribution Transformers Product Portfolio
- 8.12.5 CREAT Recent Developments
9 North America
- 9.1 North America Small Distribution Transformers Market Size by Type
- 9.1.1 North America Small Distribution Transformers Revenue by Type (2021-2032)
- 9.1.2 North America Small Distribution Transformers Sales by Type (2021-2032)
- 9.1.3 North America Small Distribution Transformers Price by Type (2021-2032)
- 9.2 North America Small Distribution Transformers Market Size by Application
- 9.2.1 North America Small Distribution Transformers Revenue by Application (2021-2032)
- 9.2.2 North America Small Distribution Transformers Sales by Application (2021-2032)
- 9.2.3 North America Small Distribution Transformers Price by Application (2021-2032)
- 9.3 North America Small Distribution Transformers Market Size by Country
- 9.3.1 North America Small Distribution Transformers Revenue Grow Rate by Country (2021 VS 2025 VS 2032)
- 9.3.2 North America Small Distribution Transformers Sales by Country (2021 VS 2025 VS 2032)
- 9.3.3 North America Small Distribution Transformers Price by Country (2021-2032)
- 9.3.4 United States
- 9.3.5 Canada
- 9.3.6 Mexico
10 Europe
- 10.1 Europe Small Distribution Transformers Market Size by Type
- 10.1.1 Europe Small Distribution Transformers Revenue by Type (2021-2032)
- 10.1.2 Europe Small Distribution Transformers Sales by Type (2021-2032)
- 10.1.3 Europe Small Distribution Transformers Price by Type (2021-2032)
- 10.2 Europe Small Distribution Transformers Market Size by Application
- 10.2.1 Europe Small Distribution Transformers Revenue by Application (2021-2032)
- 10.2.2 Europe Small Distribution Transformers Sales by Application (2021-2032)
- 10.2.3 Europe Small Distribution Transformers Price by Application (2021-2032)
- 10.3 Europe Small Distribution Transformers Market Size by Country
- 10.3.1 Europe Small Distribution Transformers Revenue Grow Rate by Country (2021 VS 2025 VS 2032)
- 10.3.2 Europe Small Distribution Transformers Sales by Country (2021 VS 2025 VS 2032)
- 10.3.3 Europe Small Distribution Transformers Price by Country (2021-2032)
- 10.3.4 Germany
- 10.3.5 France
- 10.3.6 U.K.
- 10.3.7 Italy
- 10.3.8 Russia
- 10.3.9 Spain
- 10.3.10 Netherlands
- 10.3.11 Switzerland
- 10.3.12 Sweden
11 China
- 11.1 China Small Distribution Transformers Market Size by Type
- 11.1.1 China Small Distribution Transformers Revenue by Type (2021-2032)
- 11.1.2 China Small Distribution Transformers Sales by Type (2021-2032)
- 11.1.3 China Small Distribution Transformers Price by Type (2021-2032)
- 11.2 China Small Distribution Transformers Market Size by Application
- 11.2.1 China Small Distribution Transformers Revenue by Application (2021-2032)
- 11.2.2 China Small Distribution Transformers Sales by Application (2021-2032)
- 11.2.3 China Small Distribution Transformers Price by Application (2021-2032)
12 Asia (Excluding China)
- 12.1 Asia Small Distribution Transformers Market Size by Type
- 12.1.1 Asia Small Distribution Transformers Revenue by Type (2021-2032)
- 12.1.2 Asia Small Distribution Transformers Sales by Type (2021-2032)
- 12.1.3 Asia Small Distribution Transformers Price by Type (2021-2032)
- 12.2 Asia Small Distribution Transformers Market Size by Application
- 12.2.1 Asia Small Distribution Transformers Revenue by Application (2021-2032)
- 12.2.2 Asia Small Distribution Transformers Sales by Application (2021-2032)
- 12.2.3 Asia Small Distribution Transformers Price by Application (2021-2032)
- 12.3 Asia Small Distribution Transformers Market Size by Country
- 12.3.1 Asia Small Distribution Transformers Revenue Grow Rate by Country (2021 VS 2025 VS 2032)
- 12.3.2 Asia Small Distribution Transformers Sales by Country (2021 VS 2025 VS 2032)
- 12.3.3 Asia Small Distribution Transformers Price by Country (2021-2032)
- 12.3.4 Japan
- 12.3.5 South Korea
- 12.3.6 India
- 12.3.7 Australia
- 12.3.8 Taiwan
- 12.3.9 Southeast Asia
13 South America, Middle East and Africa
- 13.1 SAMEA Small Distribution Transformers Market Size by Type
- 13.1.1 SAMEA Small Distribution Transformers Revenue by Type (2021-2032)
- 13.1.2 SAMEA Small Distribution Transformers Sales by Type (2021-2032)
- 13.1.3 SAMEA Small Distribution Transformers Price by Type (2021-2032)
- 13.2 SAMEA Small Distribution Transformers Market Size by Application
- 13.2.1 SAMEA Small Distribution Transformers Revenue by Application (2021-2032)
- 13.2.2 SAMEA Small Distribution Transformers Sales by Application (2021-2032)
- 13.2.3 SAMEA Small Distribution Transformers Price by Application (2021-2032)
- 13.3 SAMEA Small Distribution Transformers Market Size by Country
- 13.3.1 SAMEA Small Distribution Transformers Revenue Grow Rate by Country (2021 VS 2025 VS 2032)
- 13.3.2 SAMEA Small Distribution Transformers Sales by Country (2021 VS 2025 VS 2032)
- 13.3.3 SAMEA Small Distribution Transformers Price by Country (2021-2032)
- 13.3.4 Brazil
- 13.3.5 Argentina
- 13.3.6 Chile
- 13.3.7 Colombia
- 13.3.8 Peru
- 13.3.9 Saudi Arabia
- 13.3.10 Israel
- 13.3.11 UAE
- 13.3.12 Turkey
- 13.3.13 Iran
- 13.3.14 Egypt
14 Value Chain and Sales Channels Analysis
- 14.1 Small Distribution Transformers Value Chain Analysis
- 14.1.1 Small Distribution Transformers Key Raw Materials
- 14.1.2 Raw Materials Key Suppliers
- 14.1.3 Manufacturing Cost Structure
- 14.1.4 Small Distribution Transformers Production Mode & Process
- 14.2 Small Distribution Transformers Sales Channels Analysis
- 14.2.1 Direct Comparison with Distribution Share
- 14.2.2 Small Distribution Transformers Distributors
- 14.2.3 Small Distribution Transformers Customers
15 Concluding Insights
16 Appendix
- 16.1 Reasons for Doing This Study
- 16.2 Research Methodology
- 16.3 Research Process
- 16.4 Authors List of This Report
- 16.5 Data Source
- 16.5.1 Secondary Sources
- 16.5.2 Primary Sources
- 16.6 Disclaimer
GET THE RESEARCH
Choose your license.
Choose who needs access.
All options are for this report and research series.
PDF by email within 3–5 working days after payment confirmation.
Talk to an analyst