In high-voltage transmission, the point where a cable meets the outside world often decides how reliable the whole system will be. An outdoor termination has to deal with electrical stress, weather exposure, pollution, and mechanical forces—all at the same time. At 132kV Cable outdoor Termination Kit, there is little room for error.
А 132kV Cable Outdoor Termination Kit 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. Осы себеппен, engineers pay close attention to design details, материалдар, and installation practices.
Осы уақытта, many projects also involve GIS тоқтатылуы немесе гибридті жүйелер. Сондықтан, 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?
А 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, rain, UV radiation, және ластану. Болғандықтан, they must provide strong insulation, reliable sealing, and long-term resistance to environmental stress.
Іс жүзінде, the termination creates a smooth transition from the cable insulation (typically XLPE) to air insulation. Осы уақытта, it controls the electric field at the cable end to prevent discharge or failure.
Relationship Between Outdoor Termination and GIS Termination
Outdoor termination and ГАЖ тоқтатылуы serve similar purposes but operate in different environments.
An outdoor termination connects the cable to air-insulated equipment. Қайта, a GIS cable termination connects the cable to gas-insulated switchgear inside a sealed enclosure.
Дегенмен, both types share key design principles. Мысалы, both must control electric stress, maintain insulation integrity, and ensure reliable conductor connection.
Because of this, 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.
Күйзелісті бақылау жүйесі
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.
Insulation Body
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.
Sheds (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.
Болғандықтан, the termination can operate reliably even in polluted or coastal environments.
Өткізгіш қосқышы
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.
Тығыздау жүйесі
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.
Cold Shrink Termination
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.
Heat Shrink Termination
Heat shrink designs require heating to fit tightly onto the cable. They are cost-effective but require more installation control.
Кабельдік өткізгіш өлшемдер кестесі (25 мм² дейін 3000 мм²)
Таңдау кезінде а 132kV cable outdoor termination kit, conductor size plays a critical role. It affects electrical performance, термиялық мінез-құлық, and mechanical design.
Below is a practical reference table covering conductor sizes from 25 мм² дейін 3000 мм².
Өткізгіштің көлденең қимасы және техникалық параметрлері
| Өткізгіш өлшемі (мм²) | Шамамен. AWG/MCM | Өткізгіштің диаметрі (мм) | Тұрақты ток кедергісі (Ω/км @20°C) | Типтік ток сыйымдылығы (А) | Қолдану деңгейі |
|---|---|---|---|---|---|
| 25 | 4 AWG | 5.6 | 0.727 | 150–180 | Бақылау / шағын жүктеме |
| 35 | 2 AWG | 6.7 | 0.524 | 180– 220 | Жарықтың таралуы |
| 50 | 1/0 AWG | 8.0 | 0.387 | 220– 270 | Тарату |
| 70 | 2/0 AWG | 9.6 | 0.268 | 260–320 | Орташа жүктеме |
| 95 | 3/0 AWG | 11.0 | 0.193 | 300– 370 | Қосалқы станция фидер |
| 120 | 4/0 AWG | 12.4 | 0.153 | 340– 420 | Орташа HV |
| 150 | 300 MCM | 13.9 | 0.124 | 380– 470 | Берілу |
| 185 | 350 MCM | 15.5 | 0.099 | 420– 520 | Берілу |
| 240 | 500 MCM | 17.5 | 0.075 | 480– 600 | 132кВ стандарты |
| 300 | 600 MCM | 19.5 | 0.060 | 550– 680 | Негізгі қоректендіргіш |
| 400 | 800 MCM | 22.6 | 0.047 | 650– 800 | Ауыр жүк |
| 500 | 1000 MCM | 25.2 | 0.036 | 750– 920 | HV беру |
| 630 | 1250 MCM | 28.3 | 0.028 | 850– 1050 | Жалпы 132кВ |
| 800 | 1600 MCM | 31.9 | 0.022 | 1000– 1200 | Жаппай қуат |
| 1000 | 2000 MCM | 35.7 | 0.017 | 1150– 1400 | Үлкен қосалқы станциялар |
| 1200 | 2500 MCM | 39.1 | 0.015 | 1300– 1550 | Тор магистраль |
| 1400 | — | 42.2 | 0.013 | 1400– 1700 | Өте ауыр жүктеме |
| 1600 | — | 45.2 | 0.011 | 1550– 1850 | Үлкен трансмиссия |
| 2000 | — | 50.5 | 0.009 | 1750– 2100 | Негізгі тор |
| 2500 | — | 56.4 | 0.007 | 2000– 2400 | Өте жоғары сұраныс |
| 3000 | — | 61.8 | 0.006 | 2200– 2600 | Төтенше сыйымдылық |
How Conductor Size Affects Outdoor Termination Design
Cable size directly influences termination design.
Larger conductors require stronger mechanical support. Сондықтан, аяқтау жоғары салмақ пен орнату кернеуіне төтеп беруі керек.
Сонымен қатар, electrical stress distribution changes with conductor size. Engineers must adjust stress control components accordingly.
Үстіне, жоғары ток жылу шығарудың жоғарылауына әкеледі. Болғандықтан, 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.
Бірінші, technicians prepare the cable carefully, ensuring that insulation layers remain intact. Clean working conditions are essential.
Келесі, they install stress control and insulation components. Содан кейін, they connect the conductor and assemble the termination.
Осыдан кейін, they mount the termination and complete sealing. Ақырында, 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.
Осы артықшылықтардың арқасында, they remain widely used in transmission systems.
Applications of 132kV Outdoor Termination
Outdoor terminations are commonly used in:
- Overhead line connections
- Transformer connections
- Air-insulated substations
- Renewable energy installations
Осы уақытта, GIS termination systems are used where space is limited or environmental protection is required.
132kV Cable Outdoor Termination Kit
А 132kV Cable Outdoor Termination Kit 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, әрбір бөлшек өнімділікке әсер етеді. Сонымен қатар, conductor size selection—from 25 мм² дейін 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.