Covered Conductors

Covered Conductors

MNCC(Medium Voltage Covered Conductor) system provide the best solution at very affordable cost which overcomes most if not all the problems associated with bare overhead conductors and underground cables.

Covered Conductors are longitudinally water blocked and covered with special grades of materials that provide insulation and ultra violet protection. These conductors provide safety against accidental contact and are a major help in significantly reducing outages.

Covered Conductors have been type tested up to 66kV in line with EN50397 at CPRI and also at International labs.

The basic idea for using covered conductors is to make the line more tolerable against conductor clashing and trees leaning on the conductor. Furthermore, covered conductors enable reduced phase distances making the line even more compact when compared to conventional bare conductor overhead line.

Problems with bare conductor 1. Weather conditions (storms, lighting, humidity, rain, strong winds) results in corrosion of conductor. 2. Coming in contact with dust and pollution results in loss of life of conductors and their functioning ability

3. Tree/animal/bird contacts can lead to tripping and flashovers, bush fires and loss of life.

4. Accidental human contact due to close proximity to upper floors of building can lead to loss of life. 5. Excessive temperatures can loosen the conductors which can come into contact 6. High Inductance and voltage drops along the line can be caused by above mentioned incidents.

Advantage of covered conductor 1. Protects the aluminum conductor from corrosion

2. Upgrade the voltage/current without changing the phase distance. Lower life cycle cost compared with bare conductor 3. Reducing faults caused by Tree/animal/bird contacts and enhance the reliability by preventing bush fires. Reduces maintenance cost of tree trimming. 4. Less risk of sabotage

5. Reducing clearance between phases, can cope with direct contact between phases. 6. Environmental advantages

Ideal Applications for Forest Area: CCSX Covered Conductor is extensively used in voltage upgradation projects like from 11kV to 33kV, 66kV to 132kV etc. The CCSX Covered conductor requires less Phase to phase clearance, and can be installed even on the existing poles and cross arms by just changing the insulators and the surge arresters. This helps to reduce the cost of vegetation management and adverse environmental impact.

High temperature & UV: CCSX Covered Conductors can function smoothly with conductor temperature upto 80 deg C and in corrosive & highly polluted areas. The outer jacket of the Covered Conductor being UV resistant, it can be used in high UV radiation areas.

Right of Way (ROW): With many construction and Infrastructure projects coming up below or adjacent to power networks, ROW has become major issue not only in medium voltage network but also in higher voltages like 132kV or 220kV. With reduced phase to phase clearance, covered conductors can be very useful in resolving ROW issues and ensuring the safety and reliability of the power system and human habitat.

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