S20 10kV Oil-Immersed Distribution Transformer (Grade 1 Energy Efficiency)

Product Overview

The S20 series Grade 1 energy-efficient oil-immersed distribution transformer is built to GB 20052-2020 (Grade 1), together with GB 1094.1, GB/T 6451 and IEC 60076, for grid retrofit and renewable step-up projects where energy-efficiency acceptance is strict. High-permeability silicon steel and an optimized flux-density design push no-load loss further down, paying off most on always-energized nodes and PV/wind plants with low load factors.

Key Features

• No-load loss meets Grade 1 of GB 20052-2020, cutting long-term energy cost;
• Fully sealed corrugated tank, maintenance-free; footprint-compatible with S11/S13 for like-for-like replacement;
• High-ambient options for 50°C+ sites: enlarged radiator fins, detachable dust filters, dual-channel oil/winding temperature monitoring;
• Multi-language nameplates, CE and ISO documentation, test reports for export acceptance.

Selection Guide

Select on total cost of ownership: estimate annual running hours and mean load factor from the project load curve, compare yearly loss energy of S13 vs S20, and convert the difference into payback at local tariffs — typically 3–5 years.

Typical Applications

Distribution retrofit nodes, PV and wind step-up stations, and green-park projects where efficiency class is written into the tender.