160kVA 20kV Oil-Immersed Distribution Transformer S20-M-160/20 Three Phase for Industrial Urban and Mining Power Distribution

Model:S20-M-160/20 (S13 / S22 series available)

Rated Capacity:160 kVA

Phase:Three-phase

Frequency:50 Hz / 60 Hz

Product Details
FAQs
Packing & Delivery

Product Overview

160 kVA three-phase oil-immersed distribution transformer, 20 kV / 0.4 kV. Engineered for industrial, urban and mining power distribution networks. Available in S13 / S20 / S22 series (SH15 amorphous alloy optional), compliant with international energy-efficiency standards (IEC 60076).

Key Features

Three-phase oil-immersed design — 20kV/0.4kV step-down for industrial, urban and mining grids.
Low-loss silicon steel core — Grain-oriented steel with step-lap construction cuts no-load losses and improves operating efficiency.
Copper windings — High mechanical strength and excellent short-circuit withstand for long-term reliability.
Natural oil circulation cooling (ONAN) — Corrugated fin radiator design ensures stable temperature rise without forced cooling.
Sealed, maintenance-free tank — Corrugated or conservator-type tank keeps moisture out and extends service life.
Quiet operation — Low noise and low temperature rise make it suitable for urban and residential installations.

Typical Applications

Industrial plants and manufacturing workshops
Urban 20kV distribution networks and city power supply
Mining sites, infrastructure and construction projects
Small substations and prefabricated (box-type) substations
Commercial buildings, shopping malls, and hotels
Renewable energy step-down / step-up stations (PV / wind auxiliary supply)

Standards & Certifications

Engineered to IEC 60076 for worldwide grid compatibility
ISO 9001 / 14001 / 45001 certified quality & EHS systems
CE marked for EU and international market access

Q1: What does “20kV oil-immersed distribution transformer” mean?

A: It is a three-phase transformer that uses transformer oil for insulation and cooling, with a primary (high-voltage) rated at 20 kV and a secondary (low-voltage) at 0.4 kV, suitable for stepping down medium-voltage supply to building, industrial, urban or mining level.

Q2: Which IEC standards does this transformer comply with?

A: This transformer complies with IEC 60076: Part 1 (general), Part 2 (oil-immersed/ONAN temperature rise), Part 3 (20 kV insulation levels), Part 5 (short-circuit withstand), Part 10 (sound level), and Part 20 (energy efficiency). Engineered to IEC 60076 for worldwide grid compatibility.

Q3: What is the difference between oil-immersed and dry-type transformers?

A: Oil-immersed transformers use transformer oil for cooling and insulation, offering lower cost and better heat dissipation for outdoor use. Dry-type transformers use air and cast resin, are oil-free and fire-safe, preferred for indoor and fire-sensitive spaces.

Q4: Can the voltage ratio be customized?

A: Yes. Besides 20kV/0.4kV, common ratios such as 20(10)kV/0.4kV, 10kV/0.4kV, and 35kV/0.4kV can be manufactured according to project requirements.

Q5: What accessories are included or available?

A: Standard supply includes the transformer with radiator, conservator (or sealed tank), and terminal box. Optional accessories include off-circuit / on-load tap changer, temperature indicator, oil level gauge, and protective enclosure.

Export-standard plywood crate or nude packing with waterproof plastic film and steel banding. The transformer is fixed on a steel base frame with lifting lugs. Suitable for sea, air, and land transportation. Gross weight and dimensions will be confirmed in the final packing list.