When you encounter a warning sign near a transformer, it typically indicates the potential danger of high voltage. Coming too close to the transformer can be hazardous due to the large cables involved. High voltage refers to the level of power exceeding a specific threshold, which can cause sparks in the air and deliver electric shocks if someone approaches the transformer. As you continue reading, you'll gain deeper insights into high voltage cables and their diverse applications.
### Understanding High Voltage Power Cables
High-voltage cables are specifically designed to transmit electricity at elevated voltages. These cables consist of a conductor surrounded by complete insulation. This means the cables feature a fully rated insulating system, including insulation, a metallic shield, and semi-conductive layers. Depending on their application, these cables can vary significantly. Some are used in ignition systems, while others serve purposes in AC and DC power transmission. Regardless of their intended use, the insulation of these cables can degrade over time due to high-voltage stress or ozone generated by electric discharges. It's crucial that objects or people stay clear of the cable system to avoid contact, while also ensuring proper management of leakage currents. Additionally, cable joints and terminals should be carefully designed to control high-voltage stress, thereby preventing the insulation from deteriorating.
The length of high-voltage cables can vary depending on the project requirements. For instance, cables used in apparatus installations might be relatively short, whereas those utilized for transmitting power across oceans could be exceptionally long. Furthermore, managing insulation becomes critical as voltage levels increase.
### Applications of High Voltage Cables
High-voltage cables are unique and are commonly found in areas like switching and distribution panels. They allow remote or manual control of individual supply systems when testing is required. These cables are also present in triple extrusion systems and in environments where handling raw materials with systems is necessary. They are used in power circuits where the line-to-ground fault current remains within the shield's capability. These cables can be installed in both dry and humid settings, including cable trays, ducts, and raceways.
At KEI, the team integrates German technology in manufacturing cables up to 220KV. All cables are meticulously designed according to the specifications of IS: 7098 Part II & Part III. The development team also adheres to international standards such as SABS, VDE, IEC, and NFC. For water-resistant cables, KEI incorporates sheaths made of stainless steel, lead, corrugated aluminum, corrugated copper, or Polyethylene laminated Aluminum tape (APL). To protect against rodent and termite damage, these cables are equipped with a polyamide/Nylon jacket or jackets containing cypermethrin for anti-termite protection.
### Why Choose High Voltage Cables?
High voltage cables offer several advantages. They are manufactured using triple-layer extrusion techniques, employing XLPE or EPR insulation and a semiconducting bonded conductor screen over the semiconducting layer. This enhances the cable's lifespan and reduces the likelihood of failures. XLPE insulation, in particular, improves both mechanical and electrical performance while maintaining a low dielectric factor.
It is essential to inspect the quality of high voltage cables when installing them underground for power transmission. Selecting the right cable ensures durability and resilience against harsh weather conditions. For industrial setups, maintaining a detailed inventory of cables can help track repairs and maintenance schedules, minimizing unexpected outages. Regular inspections conducted by experts can prevent disruptions to operations and daily activities.
### Special Features of KEI’s High Voltage Cables
KEI offers high voltage cables with distinctive features tailored to meet site installation needs:
- **Water/Moisture Resistant MV Cables**: Cables featuring corrugated aluminum sheath (CAS), corrugated copper sheath (CCU), corrugated stainless steel sheath (CSS), lead alloy sheath (LAS), or Polyethylene laminated Aluminum tape (APL) are ideal for environments prone to water and moisture.
- **Flame Retardant (FR), Flame Retardant Low Smoke & Halogen (FR-LSH), Low Smoke, Zero Halogen (LSZH) MV Cables**: In critical locations like hospitals, cinemas, shopping malls, tunnels, and airports, cables resistant to fire hazards are constructed with these materials for maximum safety.
- **Rodent & Termite Resistant MV Cables**: Designed for robust protection against rodents, these cables incorporate a polyamide/Nylon jacket to provide anti-termite resistance.
By understanding the importance of these cables and their specialized features, you can make informed decisions when selecting the right cables for your projects. Whether it's for industrial use, urban infrastructure, or residential needs, high voltage cables play a vital role in ensuring efficient and safe power transmission.
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Most of our customers were from North America, Europe and Chinese domestic market.
Annual Production Capability: 200,000pcs
Materials: carbon steel, stainless steel, alloys steel, steel tube, etc.
Surface treatment: painting, zinc plating, blackening, passivation, nickel plating, oiled, etc.
Heat treatment: according to customer`s requirement.
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