Page Title: S‑M‑800/15 800kVA Oil Immersed Power Transformer 15kV/0.4kV ONAN Cooling IEC60076 for Industrial Commercial Distribution & Renewable Energy

Meta Description: S‑M‑800/15 800kVA three‑phase oil immersed distribution transformer,15‑0.4kV ±2×2.5% tapping,ONAN cooling,complies with IEC60076, for industrial parks,commercial complexes,solar wind energy and infrastructure projects. Custom connection group available.

800 kVA Oil Immersed Power Transformer for Industrial and Commercial Distribution Networks

S‑M‑800/15 800kVA Three‑Phase Oil Immersed Distribution Transformer is a medium‑voltage step‑down transformer widely used for industrial, commercial and renewable‑energy power systems across global markets. It delivers stable power supply, low energy loss and balanced load performance for substations and distribution networks.

Product Overview

Model S‑M‑800/15 is a three‑phase oil immersed electrical transformer with rated capacity 800 kVA, rated voltage 15 kV / 0.4 kV, tapping range ±2*2.5%. It is ideal for industrial facilities, commercial complexes and large‑scale power distribution networks. This oil‑filled distribution transformer stabilizes power flow, cuts energy losses and realizes balanced load distribution for power grids and substations.

Cooling System: ONAN Technology

This transformer adopts ONAN (Oil Natural Air Natural) cooling solution. Insulating oil absorbs heat generated by core and windings and circulates naturally inside tank. Heat dissipates to ambient air via radiator fins. No extra fans or pumps are required for this natural cooling mode. It lowers routine maintenance workload, extends service life and achieves eco‑friendly operation.

Key Functions of Insulating Oil

High‑grade insulating oil performs two core functions inside the transformer: ‑ Electrical insulation: avoid electrical breakdown between live components ‑ Heat removal: transfer heat from windings and core for thermal stability

Insulating oil also protects internal parts against moisture and pollutants, improving durability for diverse field operating environments.

Compliance with IEC60076 Standard

Manufactured strictly following IEC60076 international power transformer standard. It meets strict requirements on insulation performance, temperature rise, short‑circuit withstand capability, mechanical strength and energy efficiency. End users gain guaranteed safety, reliability and stable operational performance.

Technical Specifications

‑ Model: S‑M‑800/15 ‑ Applied Standard: IEC60076 ‑ Rated Capacity: 800 kVA ‑ Rated Voltage HV/LV: 15 ± 2*2.5% / 0.4 kV ‑ Phase: 3‑phase ‑ Rated Frequency: 50 Hz ‑ Cooling Method: ONAN ‑ Insulation Class: A ‑ No‑Load Loss: 810 W

Ease of Installation and Maintenance

Compact and rugged structure supports flexible deployment for outdoor substations or indoor electrical rooms. Maintenance‑oriented design includes: ‑ Accessible oil filling and draining ports ‑ Built‑in temperature monitoring devices ‑ Integrated pressure relief systems

These features simplify regular inspection and servicing, reduce equipment downtime and lower total maintenance cost during full service life.

Applications

This S‑M‑800/15 oil immersed distribution transformer serves multiple project scenarios worldwide:

1. Medium‑voltage distribution networks Supply reliable power for industrial parks, commercial complexes and large residential communities.
2. Renewable energy projects Step‑up or step‑down voltage for wind farms and solar power plants.
3. Infrastructure projects Meet power demand for manufacturing plants, mining sites and large construction projects.

Solid mechanical construction plus standard wooden‑pallet export packaging enables convenient transportation and installation for remote and harsh‑location sites.

Customization Options

Model S‑M‑800/15 is produced in China with GB standard certification. Custom parameters for individual project demands: ‑ Rated capacity adjustment ‑ Voltage combination modification ‑ Tapping range change ‑ Connection group: Dyn11 / Yyn0 / Yd11 as requested

Each unit is securely packed with wooden pallet for safe global shipment.

Support and Services

Complete technical support and full‑cycle after‑sales service guarantee stable transformer operation: ‑ Installation and commissioning assistance ‑ Troubleshooting and diagnostic support ‑ On‑site inspection and transformer oil testing ‑ Thermal imaging and insulation resistance measurement ‑ Repair, refurbishment and genuine spare‑parts supply ‑ Custom technical training for customer engineering staff

Keywords: 800kVA oil immersed power transformer, S‑M‑800/15 transformer, 15kV 0.4kV distribution transformer, ONAN oil‑filled transformer, IEC60076 industrial transformer, commercial power distribution transformer, solar wind farm transformer, mining infrastructure transformer