8.7/15Accessori per cavi termorestringenti kV

 

Scope of application:

Suitable for extruded insulated power cables with U0≤8.7kV

l Single-core, three-core cable

l Conduttore in rame o alluminio

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

l Metal tape shielding or metal wire shielding

l corazzato o non corazzato

l Armatura in nastro metallico o armatura in filo metallico

utilizzo:

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.

Connettore diretto: installato al centro del cavo in esecuzione, utilizzato per connettersi 2 tratti di linee in cavo.

Parametri tecnici:

Comply with and pass GB/T12706.4-2020 rated voltage 1kV (Uhm=1,2 kV) a 35kV (A=40,5kV) extruded insulated power cables and accessories Part 4: rated voltage 6kV (Um=7.2kV) a 35kV ( A=40,5kV) power cable accessories test requirements and IEC60502-4:2005 rated voltage 1kV (Uhm=1,2 kV) a 35kV (A=40,5kV) extruded insulated power cables and accessories Part 4: rated voltage 6kV (Um= 7.2kV) to 30kV (Um=36kV) test requirements for power cable accessories.

numero di serie progetto Valori dei parametri standard
1 Prova di tensione di tenuta a frequenza industriale 39kV, nessun guasto o flashover 5 minuti
2 DC withstand voltage test 35kV, nessun guasto o flashover 15 minuti
3 Partial discharge test Discharge ≤10pC at 15kV
4 Impulse voltage test 95kV, positive and negative polarity 10 times each
5 Ciclo di carico a pressione costante (nell'aria) 22kV, riscaldato a 95-100 ℃, stabile per 2 ore, pedalato 30 volte
6 Ciclo di carico a pressione costante (acqua) 22kV, riscaldato a 95-100 ℃, stabile per 2 ore, pedalato 30 volte
7 Stabilità termica al cortocircuito (cable cross-section 400mm2) 40.9kA, 3S, 2 volte
8 Stabilità dinamica del cortocircuito (cable cross-section 400mm2) 177.0kA, 10SM, 1 tempo
9 Prova di tensione di tenuta a frequenza industriale 22kV, nessun guasto o flashover 15 minuti
10 Outdoor terminal salt spray test 11kV,1000h
11 Indoor terminal moisture test 11kV,300h
12 Intermediate joint water immersion test 2.5u0, riscaldato a 95-100 ℃, stabile per 2 ore, immersed in water 30 volte