高圧送電時, 多くの場合、ケーブルが外界と接する点によって、システム全体の信頼性が決まります。. 屋外終端では電気的ストレスに対処する必要がある, 天候にさらされる, 汚染, 機械的な力をすべて同時に. 132kV ケーブル屋外終端キット, 間違いの余地はほとんどありません.
あ 132kV ケーブル屋外終端キット provides the controlled interface between a high-voltage cable and overhead lines, transformers, or switchgear. While it operates in open air, it must deliver the same level of insulation performance as enclosed systems. このため, engineers pay close attention to design details, 材料, and installation practices.
同時に, many projects also involve GIS の終了 またはハイブリッドシステム. したがって, understanding outdoor terminations alongside GIS cable termination solutions helps engineers choose the right approach for different environments.
What Is a 132kV Cable Outdoor Termination Kit?
あ 132kV cable outdoor termination kit is a complete set of components used to connect a high-voltage cable to external electrical equipment in open-air conditions.
Unlike indoor or GIS terminations, outdoor terminations operate in direct exposure to wind, 雨, 紫外線, そして汚染. 結果として, they must provide strong insulation, reliable sealing, and long-term resistance to environmental stress.
実際に, the termination creates a smooth transition from the cable insulation (typically XLPE) to air insulation. 同時に, it controls the electric field at the cable end to prevent discharge or failure.
Relationship Between Outdoor Termination and GIS Termination
Outdoor termination and GIS終端 serve similar purposes but operate in different environments.
An outdoor termination connects the cable to air-insulated equipment. 対照的に, a GIS cable termination connects the cable to gas-insulated switchgear inside a sealed enclosure.
しかし, both types share key design principles. 例えば, both must control electric stress, maintain insulation integrity, and ensure reliable conductor connection.
このため, engineers often compare outdoor termination kits with GIS cable termination systems, especially when deciding between air-insulated and gas-insulated substations.
Main Components of a 132kV Outdoor Termination Kit
A high-quality outdoor termination kit includes several critical components. Each part plays a specific role in overall performance.
ストレスコントロールシステム
The stress control system manages the electric field at the end of the cable insulation. Without it, electrical stress would concentrate at certain points and increase the risk of failure.
Manufacturers use stress cones or pre-molded stress control elements to distribute the field evenly.
絶縁体
The insulation body provides the main dielectric barrier. It allows the cable to transition safely from solid insulation to air.
Silicone rubber is widely used because it offers flexibility, weather resistance, and excellent insulation performance.
小屋 (Weather Protection)
Outdoor terminations include sheds, also known as skirts, along the insulation body. These sheds increase the creepage distance and protect the surface from contamination.
結果として, the termination can operate reliably even in polluted or coastal environments.
導体コネクタ
The conductor connector links the cable conductor to external equipment. It must provide low resistance and strong mechanical stability.
Proper connection helps avoid overheating and ensures efficient current flow.
シーリングシステム
The sealing system prevents moisture from entering the cable. Since outdoor environments involve humidity and rain, effective sealing is essential for long-term reliability.
Mounting Structure
The mounting structure supports the termination and keeps it aligned with the connected equipment. It must withstand wind load and mechanical stress.
Types of 132kV Outdoor Termination Kits
Different project conditions require different termination designs.
Pre-Molded Outdoor Termination
Pre-molded terminations use factory-made silicone rubber components. They offer consistent quality and faster installation.
Because of their reliability, they are widely used in modern substations.
常温収縮終端
Cold shrink terminations use elastic materials that shrink onto the cable after installation. They simplify the installation process and reduce the need for heating tools.
熱収縮終端
Heat shrink designs require heating to fit tightly onto the cable. They are cost-effective but require more installation control.
ケーブル導体サイズ表 (25 mm² から 3000 mm²)
を選択するときは、 132kV cable outdoor termination kit, conductor size plays a critical role. It affects electrical performance, 熱挙動, and mechanical design.
Below is a practical reference table covering conductor sizes from 25 mm² から 3000 mm².
導体の断面積と技術的パラメータ
| 導体サイズ (mm²) | 約. AWG/MCM | 導体直径 (んん) | 直流抵抗 (Ω/km @20°C) | 標準電流容量 (あ) | アプリケーションレベル |
|---|---|---|---|---|---|
| 25 | 4 AWG | 5.6 | 0.727 | 150–180 | コントロール / 小さな負荷 |
| 35 | 2 AWG | 6.7 | 0.524 | 180–220 | 配光 |
| 50 | 1/0 AWG | 8.0 | 0.387 | 220–270 | 分布 |
| 70 | 2/0 AWG | 9.6 | 0.268 | 260–320 | 中負荷 |
| 95 | 3/0 AWG | 11.0 | 0.193 | 300–370 | 変電所フィーダ |
| 120 | 4/0 AWG | 12.4 | 0.153 | 340–420 | 中HV |
| 150 | 300 MCM | 13.9 | 0.124 | 380–470 | 伝染 ; 感染 |
| 185 | 350 MCM | 15.5 | 0.099 | 420–520 | 伝染 ; 感染 |
| 240 | 500 MCM | 17.5 | 0.075 | 480–600 | 132kV標準 |
| 300 | 600 MCM | 19.5 | 0.060 | 550–680 | メインフィーダー |
| 400 | 800 MCM | 22.6 | 0.047 | 650–800 | 重負荷 |
| 500 | 1000 MCM | 25.2 | 0.036 | 750–920 | HVトランスミッション |
| 630 | 1250 MCM | 28.3 | 0.028 | 850–1050 | 共通132kV |
| 800 | 1600 MCM | 31.9 | 0.022 | 1000–1200 | バルクパワー |
| 1000 | 2000 MCM | 35.7 | 0.017 | 1150–1400 | 大規模変電所 |
| 1200 | 2500 MCM | 39.1 | 0.015 | 1300–1550 | グリッドバックボーン |
| 1400 | — | 42.2 | 0.013 | 1400–1700 | 超重荷重 |
| 1600 | — | 45.2 | 0.011 | 1550–1850 | 大型トランスミッション |
| 2000 | — | 50.5 | 0.009 | 1750–2100 | 主要なグリッド |
| 2500 | — | 56.4 | 0.007 | 2000–2400 | 超高需要 |
| 3000 | — | 61.8 | 0.006 | 2200–2600 | 極めて高い容量 |
How Conductor Size Affects Outdoor Termination Design
Cable size directly influences termination design.
Larger conductors require stronger mechanical support. したがって, 終端はより高い重量と取り付けストレスに耐える必要があります.
加えて, electrical stress distribution changes with conductor size. Engineers must adjust stress control components accordingly.
さらに, 電流が増加すると発熱量が増加します. 結果として, thermal performance becomes more important for large cables.
Installation also becomes more complex as cable size increases. Larger cables require careful handling and precise alignment.
Installation of 132kV Outdoor Termination
Installation quality determines long-term performance.
初め, technicians prepare the cable carefully, ensuring that insulation layers remain intact. Clean working conditions are essential.
次, they install stress control and insulation components. それから, they connect the conductor and assemble the termination.
その後, they mount the termination and complete sealing. ついに, testing confirms proper electrical performance.
Advantages of Outdoor Termination Kits
Outdoor termination kits offer several advantages.
They are suitable for open-air installations.
They provide strong resistance to environmental conditions.
They support flexible system design.
They are compatible with various equipment types.
こういったメリットがあるため、, they remain widely used in transmission systems.
Applications of 132kV Outdoor Termination
Outdoor terminations are commonly used in:
- 架空線接続
- Transformer connections
- Air-insulated substations
- Renewable energy installations
同時に, GIS termination systems are used where space is limited or environmental protection is required.
132kV ケーブル屋外終端キット
あ 132kV ケーブル屋外終端キット plays a critical role in high-voltage transmission systems. It ensures a safe and stable connection between cables and external equipment.
From stress control to environmental protection, あらゆる細部がパフォーマンスに影響を与える. 加えて, conductor size selection—from 25 mm² から 3000 mm²—must match both electrical and mechanical requirements.
Whether used alone or alongside cable termination solutions, outdoor terminations remain an essential part of modern power infrastructure.