The S22 series Three Phase Oil Immersed Transformers are constructed using high-quality 3OP series silicon steel from Shanxi, featuring foil-wound electromagnetic coils and advanced insulation materials and processes. Three phase oil immersed transformers are designed with high heat resistance, high impact resistance,and a fully sealed structure to ensure stable transformer oil quality, extending maintenance intervals.
The entire oil tank is composed of wavy chip radiators, treated with phosphating and double-layer anti-rust coating, providing excellent aging resistance.
The S22 series is a new energy-efficient Three Phase Oil.
Immersed Transformer with a rated capacity ranging from 30KVA to 2500KVA, suitable for power systems operating at voltages between 6KV and 11KV, making it the primary equipment for small and medium-sized substations.
Basic information
Type: Oil Immersed Transformer
Phase: Three
Service Voltage: 6KV-11KV
Rated Capacity:30KVA~250OkVA
Vector group:Yyn0, Dyn11
Cooling type: ONAN
Core material: CRGO
Winding material: Copper/aluminum
Available fluids: mineral oil and ester fluids
Purpose:Three-phase pole mounted oil filled transformers are intended for transforming of electric energy in utility grid and in energy consumer networks.
Product Standards:
IEC 60076 Standard System for Power Transformers
GB 1094 Power Transformer
GB/T 15164 Oil-immersed power transformer load guide
GB/T 6451 Three-phase oil-immersed power transformer
technical parameters and requirements
Three Phase Oil Immersed Transformer features:
The S22 series fully sealed three phase oil immersed transformers utilize wavy tank fins as cooling elements. This design isolates the internal transformer components from the atmosphere, preventing moisture and aging-related deterioration of oil and insulation, thereby enhancing operational reliability.
The oil tank is expertly welded, ensuring smoothness, flatness,and uniform thickness to prevent oil leakage.The core employs O.23mm high-permeability laser-scribed plates and a stepped five-stage slot structure, reducing no-load loss and current. Lock nuts secure the core tension and clamping.
High-voltage windings use multi-layer wire with special interlayer insulation materials to improve mechanical strength. Low-voltage windings are either single-layer or new coil, utilizing dot tape for interlayer insulation and formed end rings for full support, ensuring gap-free construction and robust mechanical strength.
For pressure protection, pressure relief valves are selected. Gas protection utilizes QJ4 gas relays for transformers above 80OkVA. Transformers above 100OkVA feature signal thermometers for remote oil temperature monitoring.
Oil Immersed Hermetically Sealed Transformer Advantage:
High Efficiency: Optimized core and coil structures reduce reluctance and copper loss, improving conversion efficiency.
No-load loss is 20% lower than S13 transformers, and load loss is 30% lower, meeting national energy efficiency standards.
Low Noise: Core and coil optimizations result in noise levels below 60dB, reaching domestic advanced standards. Special designs can be made upon user request to meet specific grid requirements.
Compact Design: High-quality materials and manufacturing processes enable higher power density, resulting in smaller size and weight.
Environmental Protection and Energy Saving: Reduced losses minimize heat and CO2 emissions, meeting environmental standards while lowering operational costs and improving grid efficiency.
Safety and Reliability: High-quality materials and manufacturing ensure superior safety, reliability, and durability.
Cost-Effective Maintenance: Modular design reduces maintenance costs and enhances practicality.
