Introduction of product:

The S22-M-10 series 10kV fully sealed oil-immersed distribution transformer is the highest energy-saving level and manufacturing process of oil-immersed distribution transformer at present and it leads the development direction of the industry. This series is based on the S20 series, and achieves the industry-leading energy efficiency and the lowest total cost of ownership (TCO) with comprehensive upgrades on core materials, multi-physics field collaborative optimisation design, and refined manufacturing process control. The product adopts a fully sealed double-corrugated tank structure, combined with new aging-resistant seals and deeply refined insulating oil to completely isolate air and moisture, zero-maintenance operation throughout the whole life cycle, greatly reducing the user’s total life cycle investment. Further, the product provides fundamental advantages such as ultra-quiet operation, better short-circuit endurance, extremely high insulation reliability and custom scenario adaptability. It can fully meet the high requirements of high-end commercial buildings, large industrial parks, data centres, communication base stations and new high-standard distribution network projects, and it is the preferred flagship model of high-end distribution network projects.

Technical parameters

Frequently Asked Questions

Q1: What is the noise level, insulation reliability and short-circuit withstand capacity of transformer S22-M-10?

A1: The transformers of the S22-M-10 series feature ultra-high permeability magnetic cores, a five-stage step-stack process and optimised structural design for ultra-quiet operation. They are perfect for sensitive environments where noise requirements are strict such as hospitals, schools, high-end communities and data centres. The product also features new insulation materials, optimised winding structure and superior manufacturing processes to achieve partial discharge levels far below the industry standard. This significantly prolongs the life of the insulation and offers superior short circuit withstand capability. It can withstand short circuit impacts well beyond industry standards. This ensures safe and stable operation at extreme conditions with Industry leading trouble free operation time in the entire lifecycle.

Q2. How energy efficient is the S22-M-10 transformer? What are the cost savings over the entire lifecycle?

A2: The no-load loss of S22-M-10 series transformers is about 20% lower than that of S20 series, and 60% lower than that of traditional S11 series, which is the most energy-efficient model of the existing oil-immersed transformers. Under normal operating conditions of transformers in distribution networks, the price difference with the S20 series can usually be recovered in 2-3 years due to savings in electricity costs. The total electricity cost savings over the entire 30-year life cycle are far greater than the equipment purchase cost, and represent the lowest total life cycle operating cost in the industry.

Q3: How long is the service life of the S22-M-10 transformer?  Is it really zero maintenance for life?

A3:The S22-M-10 series transformer adopts a fully sealed double-corrugated tank structure, top-grade aging-resistant seals, deeply refined insulating oil and new insulating materials, the service life is more than 40 years. The product is totally isolated from air and moisture, which reduces the ageing rate of the insulating oil by more than 80%. No core lifting for maintenance, no oil changes, no other maintenance required over the entire lifecycle of the unit. Only periodic visual inspections are required. This leads to true zero maintenance operation over the unit's lifecycle and a dramatic reduction in user's total lifecycle investment.

Q4: What is the S22-M-10 transformer used for? What personalised services do they offer?

A4: The S22-M-10 series transformers are designed for high-end scenarios and demanding applications, such as new high-standard distribution network projects, ultra-large data centres, high-end commercial complexes, large industrial parks, communication core hubs, and new energy power plants. We can provide one-on-one customised services, including customised solutions in all aspects such as rated capacity (100kVA-6300kVA), rated voltage (6-11kV), rated frequency (50Hz/60Hz), multi-stage voltage regulation, on-load tap changer, high-altitude type, low-temperature type, corrosion-resistant type, low-noise type, perfectly adapting to the various stringent requirements of high-end projects.