Scope of application:
Suitable for extruded insulated power cables with U0≤27.5kV
eu Núcleo único, three-core cable
l Condutor de cobre ou alumínio
l Extruded semi-conductive shielding layer or semi-conductive tape shielding
l Metal tape shielding or metal wire shielding
l Blindado ou não blindado
l Blindagem de fita metálica ou blindagem de fio 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 direto (insulated connector): in the middle of the installed and running cable, usado para conectar 2 seções de linhas de cabo.
Parâmetros Técnicos:
Comply with and pass GB/T12706.4-2020 rated voltage 1kV (Um=1,2kV) para 35kV (Um=40.5kV) extruded insulated power cables and accessories Part 4: rated voltage 6kV (Um=7.2kV) para 35kV ( Um=40.5kV) 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 série | projeto | Valores de parâmetros padrão |
1 | Teste de tensão suportável de frequência de energia | 124kV, nenhuma quebra ou flashover em 5 minutos |
2 | DC withstand voltage test | 110kV, nenhuma quebra ou flashover em 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, aquecido a 95-100℃, estável para 2 horas, ciclado 3 vezes |
6 | Teste de tensão suportável de frequência de energia | 110kV, no breakdown or flashover in 4h |