Henan GNEE Electric Co., Ltd. is one of the most reliable manufacturers and suppliers of s series 30-3150kva 10kv oil immersed power transformer in China. If you're going to buy customized s series 30-3150kva 10kv oil immersed power transformer made in China, welcome to get quotation from our factory. Quality products and reasonable price are available.
Oil-immersed transformer Model parameters
S11
Uses copper foil windings and a tightened structure, with strong short-circuit resistance, third-level efficiency.
S13
Second-level efficiency, reduced no-load loss, uses new silicon steel sheets to optimize the magnetic circuit.
S20
Second-level efficiency, no-load and load losses are 10% lower than S13, suitable for outdoor environments.
S22
First-level efficiency, no-load loss is 40% lower than the national standard, noise is below 60dB, customization supported.
Products parameter
S22-M-30～2500/10 distribution transformer (first-level energy efficiency)
Product basic introduction of 30-3150kVA 10KV Oil Immersed Power Transformer
Compared with ordinary oil-immersed transformers, the oil-immersed distribution transformer eliminates the oil conservator and uses the corrugated fins of the corrugated oil tank as the cooling and heat dissipation components instead of traditional oil pipes. The corrugated oil tank is manufactured from high-quality cold-rolled thin steel plates on a dedicated production line. Its corrugated fins can expand and contract with the volume changes of the transformer oil, thereby isolating the transformer from the external atmosphere, effectively preventing and delaying oil degradation and insulation moisture absorption. This improves operational reliability and achieves maintenance-free operation under normal conditions. After the surface of the corrugated oil tank undergoes degreasing, rust removal, and phosphating treatment, it is coated with a three-proof (proof against rain, humidity, and smoke) coating, making it very suitable for use in industrial environments such as metallurgy and petrochemicals.
Product Structure Features Of oil-immersed transformers
1.In oil-immersed transformers, the low-voltage winding uses copper wire for small capacities and generally adopts a cylindrical structure wound with copper foil. The high-voltage winding uses a multi-layer cylindrical structure, which balances the ampere-turn distribution, reduces leakage flux, provides high mechanical strength, and has strong short-circuit resistance.
2.Both the core and windings have adopted tightening measures. The fixed parts of the high and low voltage leads all use self-locking anti-loosening nuts and adopt a non-suspended heart structure, which can withstand transportation shocks.
3.The coils and core are dried using vacuum drying, and the transformer oil uses vacuum oil filtration and oil injection processes, reducing the moisture content inside the transformer to the lowest level.
4.The oil tank uses corrugated plates, which have a breathing function to compensate for the volume changes in oil caused by temperature variations. Therefore, this product does not require an oil reservoir, significantly lowering the height of the transformer.
5.Since the corrugated plate replaces the oil reservoir, it isolates the transformer oil from the external environment. This effectively prevents oxygen and moisture from entering and causing a decline in insulation performance.
6.Based on the above five characteristics, oil-immersed transformers ensure that no oil replacement is required during normal operation, greatly reducing the maintenance cost of the transformer while extending its service life.
GNEE Electrical was established in 2008 and is a globally leading transformer manufacturer, having obtained ISO and SGS international certifications. We specialize in providing high-quality transformer solutions for the energy, industrial, and infrastructure sectors. Our main products include dry-type transformers, oil-immersed transformers, distribution transformers, power transformers, pad-mounted transformers, pole-mounted transformers, and amorphous alloy transformers. We offer transformers with capacities ranging from 30-63000kVA and various voltage levels such as 10kV/0.4kV, 500kV, 400kV, 330kV, 220kV, and 110KV, with customization support available.
Support
• Pre-sales: Free technical consulting, drawing review, and installation training.
• After-sales:
o Global warranty for 2 years; 5-year warranty on core components.
o 7×24-hour remote support, fault response within <24 hours.
o Operation manual provided.
SGS certification certificate
Our factory
Packing and Delivery
FAQ
Q1: Why should I choose an oil immersed transformer over other types?
A: Oil immersed transformers (OIT) excel in high-voltage applications due to their oil immersed transformer design, which ensures superior insulation and heat dissipation. This reduces energy losses, improves efficiency, and guarantees safety in industrial environments.
Q2: What voltage ranges do oil immersed transformers typically handle?
A: The oil immersed transformers in our S11-20 Series support 6–10kV (high-voltage side) and 0.4kV (low-voltage side). These are ideal for industrial facilities requiring stable power distribution across medium-to-high-voltage systems.
Q3: How does an oil immersed power transformer ensure reliability in harsh environments?
A: The oil immersed power transformer uses a hermetically sealed tank and epoxy-resin insulated terminals, protecting against moisture and contaminants. This extends lifespan and maintains performance in extreme temperatures.
Q4: Is the oil immersed distribution transformer suitable for outdoor use?
A: Yes! The oil immersed distribution transformer's sealed design and corrosion-resistant casing make it durable for outdoor installations. It also meets 50/60Hz frequency adaptability for global projects.
