reliable transformer
Advantages of oil-cooled transformers
1. First-class energy efficiency: ultra-low loss, energy saving and energy saving.
2. Fully sealed structure: no maintenance, no lubrication, long service life.
3. High short circuit resistance: stable and reliable performance.
4. Low noise: suitable for sensitive places such as residential areas and schools.
5. High overload capacity, good heat dissipation, wide range of applications.
6. Low overall cost, more economical to use in the long term.
Detailed information about the S22 oil-cooled transformer.
Ⅰ. Product Introduction
Oil-immersed distribution transformers are three-phase, two-turn, non-excited voltage regulating transformers that meet high-efficiency and energy-saving standards. These transformers utilize advanced technologies such as high-permeability silicon steel sheets, optimized magnetic circuit design, all-copper windings, and fully sealed oil tanks, which significantly reduce no-load losses, load losses, and operating noise. They serve as essential energy-saving distribution equipment for urban/rural power grids, industrial power distribution, commercial/public buildings, and renewable energy sources. With ONAN's oil-immersed self-cooling technology, the product provides excellent short-circuit withstand capability, extended service life, maintenance-free operation, and low operating costs. It supports various installation scenarios, including indoor/outdoor applications, transformer racks, distribution substations, and power distribution rooms.
Ⅱ. Main technical parameters (standard characteristics for class 10 kV, with the possibility of individual adjustment)
Basic parameters
• Model: Three-phase, two-turn, non-excited regulating voltage transformers
• Rated power: 10 kVA-5000 kVA
• Connection group: Dyn11 (preferred), Yyn0
• Cooling method: ONAN (self-cooling with oil cooling); large capacity models can be equipped with ONAN air cooling system.
III. Key Features
1. High efficiency and energy saving, providing significant long-term energy cost savings and optimal life cycle costs.
2. Fully sealed, maintenance-free design: The corrugated plate oil distribution system combined with full sealing effectively isolates air and moisture, slowing down oil degradation and ensuring long oil-free operation and minimal maintenance requirements.
3. High short-circuit resistance and reliability: Solid copper winding + multi-layer insulation + solid pressing technology ensure high short-circuit resistance, excellent overload capacity and stable performance.
4. Excellent heat dissipation performance and high load adaptability: Oil-cooled self-cooling systems exhibit high thermal efficiency, capable of withstanding continuous high loads and frequent start-stop cycles without performance degradation under high temperature conditions.
5. Comprehensive protection: a safety valve, oil level indicator, and thermometer are standard; a gas relay, temperature controller, and online oil chromatography monitoring are available as optional accessories, ensuring complete safety.
6. Compact and lightweight design with high power density, making it easy to transport, rack-mount and integrate into substations.
Ⅳ. Application scenarios
• Industrial Power Distribution: Main transformers for workshops/parks of energy-intensive industries such as chemical, metallurgy, mining, manufacturing and textile industries, compatible with both pulsed loads and continuous operation.
• Commercial and public buildings: reliable power supply for shopping malls, office buildings, hotels, hospitals, schools, airports, train stations, data centers and 5G base stations.
• New energy infrastructure: photovoltaic systems, wind power transformers for step-up/voltage distribution and energy storage stations with auxiliary transformers.
• Municipal and residential sectors: residential complexes, redevelopment of old residential areas, open platform substations and container substations.
• Special operating conditions: remote mountainous regions, open spaces, high humidity/high dust levels/non-hazardous zones (non-combustible and non-explosive zones).
