S11-S13 10KV-35KV Low Loss No-Excitation Tap-Changing power Transformer

The S11-S13 10KV-35KV Low Loss No-Excitation Tap-Changing Power Transformer is a series of transformers designed for medium voltage applications in power distribution networks. These transformers are known for their efficiency and reliability, and they incorporate several key features tailored to modern electrical infrastructure needs.

The S11-S13 type distribution transformer introduces new international technology, adopts a fully oil-filled sealed type, with/without an oil conservator, and the transformer changes its oil body due to changes in temperature and load, which is completely adjusted by the flexibility of the transformer tank. The no-load loss of the transformer is 30% lower than that of the S7, and it has strong lightning resistance and short-circuit resistance. The energy-saving effect is more obvious, and the outer size of the transformer is reduced.

Yawei Transformer located in Jiangsu province, one of the largest and most famous brand of power equipment manufacturing base in China. Yawei specializes in high and low voltage power transmission and distribution equipment, including oil-immersed power transformer, dry-type transformer, box style substation and related components. Our hermetically sealed oil-immersed transformer designed with low loss, low noise, and high efficiency, which can achieve good energy-saving effects and reduce pollution. The quality has reached the top level of similar international transformers.

1.Low noise: compact design structure, application of new materials and new technology, reduce noise, no oil storage tank, lower height than similar products.
2.Reliable long-term service life: The fully sealed transformer case cover and the tank rim are bolted or welded to isolate the contact between oil and air.
3.Small size and beautiful appearance: S9-M series of transformer oil tanks use corrugated plate fins. When the oil temperature changes, the change in oil volume is adjusted and compensated by the elastic expansion and contraction of the corrugated sheets. The corrugated fuel tank is beautiful in appearance and small in size, with a small footprint.
4.Maintenance-free: The fully sealed transformer does not require maintenance.

1.High ambient temperature: +40℃
2.Low ambient temperature: -25℃
3.Altitude: <1000m
4.Monthly average relative humidity: 90% (20℃)
5.Installation location: used in chemical plants, factories, remote places and harsh environment.

We can also customize according to your demand.

The transformers was send to sea port by truck, it was transported with oil in the tank, the accessories such as radiators are packed in plywood boxes and the transformer body was nude in the ship, we also equipped impact recorder for the transformer.

YAWEI Transformer is a UL/CUL/CSA certificated transformer manufacturer.

YAWEI promises each one of our delivered power transformer has passed the most strictly test and we remained 0 fault rate record for more than 10 years so far, our oil immersed power transformer is designed in accordance with IEC, ANSI and other major international standards.We aim to be your reliable business partner!

1.Quality management system GB/T 19001-2016 ISO 9001: 2015

The operation of the whole YAWEI system is strictly controlled and managed. This ensures the quality of products and material in all stages, from receiving customer requests to design, materials, production, installation, testing, packaging, delivery, after-sales, all of which operate under strict and logically linked processes.

2.CERTIFICATEOFCOMPLIANCE of UL and CUL

YaWei pad mounted transformer have been evaluated by UL in accordance with the U.S and Canada Standard(s). Our transformer certified by UL based on Canadian standards (CSA standards) .

3.Accreditation certificate CE

Standard: EN 60076-1:2011.EN 60076-2:2011EN 60076-14:2013 confirms that YAWEI technical quality meets the requirements of all specific international standards for testing and calibration laboratories. All YAWEI products are fully tested in a qualified testing room before leaving the factory, ensuring stable quality and providing absolute peace of mind for customers.

Pad Mounted Transformer

Substation Transformer(Skid Mounted Transformer)

Pole Mounted Transformer

Power Transformer

Furnace Transformer

Compact transformer

Distribution Transformer

Dry Transformer