S13-M Oil-Immersed Distribution Transformer

The S13-M series is a high-efficiency, fully sealed oil-immersed distribution transformer upgraded from the S11 series.

By adopting improved silicon-steel materials and an optimized core-and-coil structure, the transformer is designed to reduce no-load losses and operating noise while maintaining reliable electrical performance.

The fully sealed construction helps prevent air and moisture ingress, reducing oil oxidation and supporting maintenance-free operation. With a compact and reliable design, the S13-M series is suitable for urban and rural distribution networks as well as industrial and commercial power supply applications.

01. Upgraded Core & Coil Design

Improved silicon-steel materials and an optimized core-and-coil structure help reduce no-load losses and operating noise.

02. Fully Sealed Construction

The fully sealed oil-immersed structure helps prevent air and moisture ingress and reduces oil oxidation.

03. Maintenance-Free Operation

The sealed design helps minimize routine maintenance requirements under normal operating conditions.

04. Lower Operating Noise

The optimized transformer structure reduces operating noise, with noise levels stated to be approximately 20% lower than conventional distribution transformers.

05. Flexible Configuration

Rated capacity and voltage configuration can be adjusted according to distribution network and project requirements.

06. Copper or Aluminum Windings

Copper or aluminum winding options are available according to the product configuration and customer requirements.

07. Outdoor-Ready Hardware

Stainless steel hardware helps support long-term outdoor operation.

08. Reliable Electrical Performance

The transformer is designed for low losses, low partial discharge, high efficiency and reliable long-term operation.

The S13-M series uses a fully sealed oil-immersed structure designed to isolate the transformer oil from external air and moisture.

By reducing moisture ingress and oil oxidation, the sealed structure helps maintain insulation performance and supports maintenance-free operation under normal service conditions.

Urban Power Distribution

For urban distribution networks and infrastructure power supply.

Rural Power Distribution

Suitable for rural distribution networks and electrification projects.

Industrial Power Supply

For factories and industrial electrical systems requiring reliable distribution power.

Commercial Power Supply

Suitable for commercial buildings and other low-voltage distribution applications.

What is an S13-M transformer?

The S13-M is a high-efficiency, fully sealed oil-immersed distribution transformer upgraded from the S11 series.

What is the capacity range?

The current S13-M product series covers rated capacities from 30 kVA to 2,500 kVA.

What is the standard voltage configuration?

The listed two-winding series uses 10 kV high voltage and 0.4 kV low voltage.

Is the S13-M fully sealed?

Yes. The series uses a fully sealed oil-immersed structure designed to reduce air and moisture ingress.

Is the S13-M maintenance-free?

The fully sealed design supports maintenance-free operation under normal service conditions.

Is the S13-M quieter than conventional distribution transformers?

The current product description states that its noise level is approximately 20% lower on average than conventional distribution transformers.

Are copper and aluminum windings available?

Yes. Copper or aluminum winding configurations can be provided according to the product and project requirements.

Can the transformer be customized?

Yes. Capacity, voltage, cooling mode and winding configuration can be customized according to project requirements.

What standards does the S13-M comply with?

The current product page states compliance with IEC and GB standards.