Address:Guhui Bridge, Gujing Town, Xinhui District, Jiangmen City, Guangdong Province. China Zip:529100
S9-M oil-immersed transformer can serve both indoors and outdoors at an ambient temperature up to 40°C. With reasonable structure, they are capable to withstand short-circuit and overload, and they are free of maintenance and easy to repair.
The side section of the core is oval-shape and the laminations joints are 45°mitered at 4-step-lap, which gives a compact space factor and thereby lower no-load losses. The whole process is controlled by computer. The upper yoke is free of stacking. So it can reduce iron loss when assembling and disassembling the yoke from limbs.
Both HV and LV windings are designed in layer and cylindrical structure. Instead of corrugated pressboard, laminated-wood rods are used to form oil-ducts which are easier for oil circulation and to speed up dissipating winding heat. That is why our transformer gets higher overload capacity. The LV winding of 250kVA and above is made of imported copper foil. Winding layers' insulation is made up of diamond dotted paper, which is glued with all windings into an entirety after hot drying. This helps to strengthen the winding mechanism ability, which increases stronger capacity to withstand shot-circuit.
All wiring are connected in a flexible way, so they would not loose or be broken during transportation. The height of an active part is changeable with bolts and rubber under bottom. The active part would not be displaced during transportation, thus the product is reliable. Every active part gets drying in a vacuum space. We use vacuum oil filling technique when covering the transformer in order to take away the moisture.
Our products are designed in tank structure of hermetically sealed. Its features are anti-aging, free-maintenance, breathing, and low noise.
Specifications: Rated voltage: 11, 10.5, 10, 6.3, 6kV (or as customer's requirements) Rated power: 50 - 10,000kVA Tapping range: ±5% or ±2 x 2.5% (or as customer requirement) Frequency: 50Hz Number of phases: 3 Connection symbol: Yyn0, Dyn11 or others Cooling method: ONAN Temperature rise limits: winding <65K Top oil: <60K Conservator type <55K Voltage class: 6kV, 10kV, 20kV, 35kV Power frequency withstanding voltage: 25kV, 35kV, 55kV, 85kV Lightning impulse withstanding voltage: 60kV, 75kV, 125kV, 200kV Service condition: altitude conditions <1,000m, ambient temperature <40°C Standards: GB1094 power transformer, GB/T6451 technical data and requirement of three-phase oil immersed power transformer, IEC60076 power transformer and JB/T3837
