26/35 (27.5) Accesorios para cables termorretráctiles kV

 

Scope of application:

Suitable for extruded insulated power cables with U0≤27.5kV

l de un solo núcleo, three-core cable

l Conductor de cobre o aluminio.

l Extruded semi-conductive shielding layer or semi-conductive tape shielding

l Metal tape shielding or metal wire shielding

l Blindado o no blindado

l Armadura de cinta metálica o armadura de alambre metálico

usar:

Indoor terminal: The end of a cable installed in an indoor environment (not subject to wind, frost, rain, snow and sunlight) and connected to switch cabinets, transformers and other power supply equipment or busbars.

Outdoor terminal: The end of a cable installed in an outdoor environment (able to withstand wind, frost, rain, snow and sunlight) and connected to overhead lines, busbars, transformers, fuses and other power supply equipment or overhead lines.

Conector directo (insulated connector): in the middle of the installed and running cable, usado para conectar 2 secciones de líneas de cable.

Parámetros técnicos:

Comply with and pass GB/T12706.4-2020 rated voltage 1kV (Um=1,2kV) a 35kV (A = 40,5 kV) extruded insulated power cables and accessories Part 4: rated voltage 6kV (Um=7.2kV) a 35kV ( A = 40,5 kV) test requirements for power cable accessories and GB/T28427-2012 Electrified Railway 27.5kV single-phase AC cross-linked polyethylene insulated cables and accessories 1.

número de serie proyecto Valores de parámetros estándar
1 Prueba de tensión soportada a frecuencia industrial 124kV, sin averías ni descargas eléctricas en 5 minutos
2 DC withstand voltage test 110kV, sin averías ni descargas eléctricas en 15 minutos
3 Partial discharge test Discharge ≤5pC at 48kV
4 Impulse voltage test 250kV, positive and negative polarity 10 times each
5 constant voltage load cycle 65kV, calentado a 95-100 ℃, estable para 2 horas, ciclado 3 veces
6 Prueba de tensión soportada a frecuencia industrial 110kV, no breakdown or flashover in 4h