Porcelain-cased outdoor terminal
Short Description:
Product Introduction:The porcelain bushing outdoor terminals produced by our company mainly include two models: CN-YJZWC3 series porcelain bushing outdoor terminals and CN-YJZWC4 series porcelain bushing outdoor terminals. They are suitable for connecting indoor and outdoor high-voltage overhead lin …
Product details
Product Introduction:
The porcelain bushing outdoor terminals produced by our company mainly include two models: CN-YJZWC3 series porcelain bushing outdoor terminals and CN-YJZWC4 series porcelain bushing outdoor terminals. They are suitable for connecting indoor and outdoor high-voltage overhead lines and cables, with pollution prevention levels of III and IV respectively. They are mainly composed of terminal studs, stress cones, porcelain bushing, and tail tubes. The stress cones are molded using liquid silicone rubber, providing long-term stable clamping force and uniform electric field distribution. The porcelain bushing is made of high-strength inorganic electrical porcelain, ensuring stable performance. The porcelain bushing features a large and small umbrella structure, with an overall conical shape, providing excellent pollution flashover resistance, weather resistance, anti-tracking, anti-corrosion, and water repellency. The insulating oil filled inside the porcelain bushing not only has excellent electrical insulation performance but also has a low mutual dissolution or penetration rate of 1/1000 or less with the silicone rubber stress cone, effectively ensuring long-term safe operation of the product. The product adopts a multi-seal structure, which can effectively prevent moisture infiltration and insulating oil leakage. The sealing rings are made of NBR or silicone rubber material. The fasteners are made of stainless steel, providing excellent waterproof sealing performance.
In the power industry, porcelain bushings have a long operational history, with a proven track record of safe operation spanning over a century, serving as a testament to their maturity and effectiveness.
The corresponding cross-sections for cables of various voltage levels are as follows:
48/66kV～56/77kV 150~1400mm²；
64/110kV～76/138kV 240~2500mm²；
127/220kV～290/500kV 400~3000mm²；
Main structural features:
● Reasonable structure: High-strength inorganic electric porcelain, with stable performance. The porcelain bushing adopts a large and small umbrella structure, and the overall shape of the porcelain bushing is conical, which has excellent anti-pollution flashover, weather resistance, anti-tracking, anti-electric corrosion, and water repellent capabilities. Multiple seals are perfect and effective.
Structural dimension table:
size | model | 66kV | 77kV | 110kV | 138kV | 220kV | 500kV |
H | CN-YJZWC3 | - | 1250 | 1400 | 2100 | 5300 | |
CN-YJZWC4 | 980 | 1500 | 1650 | 2450 | 5800 | ||
A | CN-YJZWC3 | - | 1950 | 2100 | 2950 | 6250 | |
CN-YJZWC4 | 1700 | 2200 | 2350 | 3300 | 6750 | ||
B | CN-YJZWC3 | - | 1685 | 1835 | 2750 | 6000 | |
CN-YJZWC4 | 1410 | 1935 | 2085 | 3100 | 6500 | ||
C | CN-YJZWC3 | - | Φ450 | Φ650 | Φ800 | ||
CN-YJZWC4 | Φ430 | ||||||
D | CN-YJZWC3 | - | Φ260 | Φ350 | Φ500 | ||
CN-YJZWC4 | Φ200 | ||||||
E | CN-YJZWC3 | - | 4-Φ25 EQS | 6-Φ32 EQS | 6-Φ32 EQS | ||
CN-YJZWC4 | 4-Φ25 EQS | ||||||
