66-138 kV intermediate insulation joint (ordinary type) 66-138 kVIntermediate Insulation Joint (Ordinary Type)

Disenyo ng istraktura:
Paggamit ng epoxy resin casting o prefabricated stress cone structure upang tiyakin ang pantay na distribusyon ng elektrikong field at local discharge capacity ≤ 5pC (IEC 60840 standard)
Metal sheath at waterproof tape seal, may protection level na IP68, na angkop para sa mga basa na kapaligiran tulad ng direct burial at tunnels
Electrical performance:
Rated voltage 220kV (Um=252kV), na angkop para sa cable cross-section na 250~2500mm ², short-circuit current withstand capacity ≥ 25kA/3s, insulation resistance ≥ 10 ¹² Ω, dielectric loss ≤ 0.01 (1kHz)

Mga scenario ng aplikasyon
Power engineering: ginagamit para sa intermediate connection ng 220kV cable lines, na sumusuporta sa direct burial, conduit o cable trench laying
New energy power station: na may wind power at photovoltaic booster stations, na kailangan umakma sa long-term outdoor operation requirements (tulad ng salt spray at vibration)
Urban power grid: Substation interconnection o ring network projects na nangangailangan ng regular detection ng partial discharge (tulad ng PD3302 ultra-high frequency detector)

Technical Standards at Certification
Standard: Sumusunod sa GB/T 12706.3-2008 (220kV Cross linked Polyethylene Insulated Cable Accessories)
Certification: Kailangan lumampas sa PSE, CE o State Grid supplier qualification audit

Technical Specifications