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220kV Porcelain insulation outdoor termination

Product Descriptions

● The product uses high-strength porcelain sleeve which has the advantage of high mechanical strength, good stability, no aging, especially suitable for coastal and natural environment harsh areas.

● The product adopts the structure of big and small umbrella skirt, and the experiment has proved that this structure has excellent pollution resistance.

● It has a good sealing performance to prevent flooding, oil leakage and other possible defects.

● Porcelain insulator comes in two sizes. One specification is 1280mm high and 3150mm creepage distance, which is suitable for Ⅲ-level dirty areas. The other specification is 1400mm high and the creepage distance is 3906mm, which is suitable for Ⅳ-level dirty areas.

Product introduction: 220kV porcelain sleeve outdoor terminal product introduction.pdf

Structure diagram: 220kV porcelain sleeve outdoor terminal structure diagram.pdf


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Product Details

Technical Specifications
Area Of Application
Applicable cable cross-sections:240~2500 mm2
Max.system voltage:252 kV
System rated frequency:50 Hz
Elevation:≤2000 m
Operation temperature;-55 ~45 
Cable Shield StyleTape/wire/corrugated Al
Design Data
Height3140±30 mm
Weight(excluding cable)550 kg / 1212.54 lbs
Composite insulatorBending moment resistance≥5000 kN
Internal withstand pressure2.4 MPa
Breakdown pressure3.5 MPa
Filling fluid(material)PIB/Gel
Creepage distance≥8300 mm
Permissible horizontal pull of connecting wire≥2 kN
Storage temperature~35 
Installation temperature~35 
Electrical Test
Electrical Type Test (IEC 62067)
Heating cycle voltage254 kV
Partial discharge test at ambient and elevated temperaturesNo detctable discharge exceeding the declared sensitivity (191 kV, 3.8pC)
Lighting impulse voltage±1050 kV
Electrical Routine Test (IEC 62067)
AC withstand voltage (wet,1 min)460 kV
Partial discharge testNo detctable discharge exceeding the declared sensitivity (191 kV, 3.8pC)



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