26/35 (27.5) Accessoires pour câbles rétractables à froid kV

 

Scope of application:

Suitable for extruded insulated power cables with U0≤27.5kV

l Monocœur, three-core cable

l Conducteur en cuivre ou en aluminium

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

l Metal tape shielding or metal wire shielding

l Blindé ou non blindé

l Blindage en ruban métallique ou blindage en fil métallique

utiliser:

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.

Connecteur direct (insulated connector): in the middle of the installed and running cable, utilisé pour se connecter 2 sections de lignes de câbles.

Paramètres techniques:

Comply with and pass GB/T12706.4-2020 rated voltage 1kV (A = 1,2 kV) à 35kV (A = 40,5 kV) extruded insulated power cables and accessories Part 4: rated voltage 6kV (Um=7.2kV) à 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.

numéro de série projet Valeurs des paramètres standards
1 Test de tension de tenue à fréquence industrielle 124kV, pas de panne ou de contournement 5 minutes
2 DC withstand voltage test 110kV, pas de panne ou de contournement 15 minutes
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, chauffé à 95-100℃, stable pour 2 heures, fait du vélo 3 fois
6 Test de tension de tenue à fréquence industrielle 110kV, no breakdown or flashover in 4h