Technical Article

3500 kVA 23 kV Oil-Immersed Transformer: Specifications & Technical Data

2026-10-14 | By: ZTELEC-www.ztelecgroup.com | 6194click

Technical guide to the 3500 kVA 23 kV oil-immersed transformer: typical specifications, losses, impedance, insulation levels, accessories, applications, and selection tips for buyers....
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Pad-Mounted Transformer: Applications in Underground Distribution

2026-10-13 | By: ZTELEC-www.ztelecgroup.com | 5187click

Learn how pad-mounted transformers work in underground distribution networks: key applications, design features, selection tips, and installation requirements for utilities and developers....
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S11 vs. S13 vs. S20 Oil Immersed Transformers: Comparison Guide

2026-10-10 | By: ZTELEC-www.ztelecgroup.com | 6150click

S11 vs S13 vs S20 oil immersed transformers compared: energy efficiency, no-load and load losses, core materials, cost, payback and how to choose the right model....
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KYN28-12 Switchgear: Technical Specifications & Features

2026-10-09 | By: ZTELEC-www.ztelecgroup.com | 6165click

KYN28-12 switchgear explained: 12kV rated voltage, up to 4000A, 40kA breaking current, four-compartment design, five-prevention interlocks, applications and selection tips....
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Transformer Price List 2026: Cost per kVA in China

2026-10-08 | By: ZTELEC-www.ztelecgroup.com | 62click

Transformer price list 2026 for China: indicative cost per kVA for oil-immersed and dry type transformers, key price drivers, hidden costs and tips to get the best quote....
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Chinese Transformer Factory Tour: Behind the Scenes of Production

2026-09-30 | By: ZTELEC-www.ztelecgroup.com | 6194click

Take a step-by-step Chinese transformer factory tour. See how core cutting, coil winding, vacuum casting, assembly and testing work, and what buyers should check on a visit....
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