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ZTELEC Officially Resumes Operations
February 24, 2026 — ZTELEC has officially resumed full operations, starting the new year with renewed energy and clear goals. As the team returns, the workplace is filled with optimism and motivation. Employees are ready to move forward together, f……
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Starting Power Transformers in Cold Temperatures: What Utilities Need to Know
In high-altitude and extremely cold regions, winter construction projects, and high-latitude countries such as Russia, Northern Europe, Central Asia, and parts of North America, starting power transformers in low-temperature environments is a criti……
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Maintaining Dry-Type Transformers: Why Proper Cleaning Matters
Dry-type transformers are widely used in industrial power distribution systems, commercial buildings, renewable energy projects, and rail transportation due to their high safety level, environmental friendliness, and low maintenance requirements. H……
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1000 kVA Compact Substation: Specifications, Structure, and Applications
The 1000 kVA compact substation is widely used in modern medium-voltage power distribution systems. With the expansion of urban grids, renewable energy projects, and industrial electricity demand, compact substations have become a preferred alterna……
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2026 Spring Festival Greeting | ZTELEC
As time moves on and all things are renewed, on the occasion of the 2026 Lunar New Year, we extend our sincere festive greetings and best wishes to you across the globe! Over the past year, we have overcome geographical distances and worked hand i……
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Understanding Cast-Resin Transformers: Encapsulated vs. Cast-Coil Designs
In modern power distribution systems, cast resin transformers are widely applied in commercial buildings, industrial facilities, renewable energy projects, and urban power networks. Their excellent fire resistance, strong environmental adaptability……
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How to Choose a 2000 kVA Copper Oil Filled Transformer for Substations
As a core piece of equipment in medium-sized substations, the selection of a 2000 kVA copper oil filled transformer has a direct impact on operational safety, power supply reliability, energy efficiency, service life, and long-term maintenance cost……
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500 kVA Compact Substation Size: Dimensions, Layout, and Space Requirements
With the rapid development of urban power grids and industrial parks, compact substations have become a preferred solution for medium-capacity power distribution. Among them, the 500 kVA compact substation is widely used due to its balanced capacit……
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Encapsulated and Cast-Coil Cast-Resin Transformers: Features and Applications
As power systems place higher demands on safety, reliability, and energy efficiency, dry-type transformers are becoming a preferred alternative to traditional oil-filled designs. Among them, encapsulated and cast-coil cast-resin transformers are wi……
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How to Choose a Low-Voltage Dry-Type Distribution Transformer
Low-voltage dry-type distribution transformers are a critical component of modern power systems and are widely used in commercial buildings, industrial plants, data centers, and renewable energy projects. Selecting the right transformer directly af……
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Inside the Transformer Production Process: From Core Cutting to Final Testing
Transformers are essential components of modern power systems, and their quality and reliability directly influence power supply safety and operational efficiency. From material selection to final inspection, each manufacturing stage plays a critic……
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Oil-Filled Self-Cooled Transformer: Working Principle and Applications
Oil-filled self-cooled transformers are one of the most widely used transformer types in power transmission and distribution systems. Thanks to their mature design, stable performance, and relatively low maintenance requirements, they are commonly ……
