Colombia Cable Aéreo Aislado Tricapa 15kv for Price from China

Suitable for: Use in air distribution networks of electricity, wooded areas, densely forested or high winds, trunk circuits or feeders, narrow streets and exits substations, where the quality of service you need or environmental regulations

Aerial Spacer Cable Systems

Covered conductor uses the same aluminum (AAC, AAAC, and ACSR) and copper conductors as bare wire construction. However, on top of the bare wire a 3-layer covering is added. The covering includes a thin semiconductor layer (to smooth out electric fields when in contact with a grounded object, minimize partial discharge, and boost the BIL) directly over the bare wire, an inner layer of low-density polyethylene (which provides a high BIL and is soft to enable stripping for taps, transitions, and line extensions), and an outer layer of high density polyethylene (providing UV inhibition, track resistance, abrasion resistance, and color). The total thickness of the three layers depends on the voltage class, as the design objective is to limit the available surface current should the phase conductor come into contact with a tree or other grounded object. While the outer two layers provide excellent insulation, NESC 230D defines them as “Covered” rather than “Insulated” conductors since there is no shield (concentric neutral).

Covered conductor systems come in two configurations. Spacer Cable Systems utilize three heavily covered conductors (usually AAC since there is no mechanical tension in the phases) supported by a high strength messenger wire and hung by polyethylene spacers every 30 feet. A Tree Wire system, on the other hand, looks more like bare wire construction. These systems utilize the same 3-layer covered conductor design, but the phase conductors are usually either ACSR or AAAC (since Tree Wire is fully self-supported and tensioned). This configuration is strung in an open wire configuration on crossarms with polyethylene insulators.

15 kV 3-layer Covered Conductor Design and Materials characteristics

• 1 CONDUCTOR / Conductor

AAAC o ACSR / AAAC or ACSR

• 2 SEMICONDUCTORA / Semiconductive Layer

Polietileno reticulado semiconductor negro / Black Cross Linked Polyethylene semiconductive

• 3 CAPA INTERNA / Inner Layer

Polietileno reticulado natural, para 90°C sitios secos y mojados / Natural Cross Linked Polyethylene, 90°C dry and wet locations

• 4 CUBIERTA / Covering

Polietileno reticulado negro, resistente a los rayos solares (SR) y a las descargas superficiales (TK), para 90°C sitios secos y mojados/ Black Cross Linked Polyethylene, Sunlight Resistant (SR), Track Resistant (TK), 90°C dry and wet locations

Cable Aéreo Aislado Tricapa Construction characteristics and dimensions

Covered Conductor Opciones

Other options

1. Conductor AAC o ACAR. / AAC or ACAR Conductor.

2. Conductor bloqueado contra migración longitudinal de agua. / Blocked conductor against longitudinally water migration.

3. Espesor de capa interna y cubierta de 2.68 mm y 1.14 mm de acuerdo con la NTC 5909. / Inner layer and covering thickness of 2.68 mm and 1.14 mm by NTC 5909.

4. Cubierta en HDPE resistente a las descargas superficiales. / HDPE tracking resistant Covering.

5. Otros calibres u otras configuraciones no descritas en la tabla están disponibles. / Other sizes and constructions are available upon request.

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