220 kV intermediate insulation joint (ordinary type) 220 kVIntermediate Insulation Joint (Ordinary Type)

Disenyo sa struktura:
Ang paggamit og epoxy resin casting o prefabricated stress cone structure aron masigurado ang pareho nga distribusyon sa elektrikong field ug local discharge capacity ≤ 5pC (IEC 60840 standard)
Metal sheath ug waterproof tape seal, may protection level nga IP68, maayo para sa wet environments sama sa direct burial ug tunnels
Elektrikal nga performance:
Rated voltage 220kV (Um=252kV), maayo para sa cable cross-section nga 250~2500mm ², short-circuit current withstand capacity ≥ 25kA/3s, insulation resistance ≥ 10 ¹² Ω, dielectric loss ≤ 0.01 (1kHz)

Application scenarios
Power engineering: gamiton para sa intermediate connection sa 220kV cable lines, suporta sa direct burial, conduit o cable trench laying
New energy power station: equipped with wind power and photovoltaic booster stations, na nanginahanglan og long-term outdoor operation requirements (such as salt spray and vibration)
Urban power grid: Substation interconnection o ring network projects nanginahanglan og regular detection of partial discharge (such as PD3302 ultra-high frequency detector)

Technical Standards and Certification
Standard: Complies with GB/T 12706.3-2008 (220kV Cross linked Polyethylene Insulated Cable Accessories)
Certification: Must pass PSE, CE or State Grid supplier qualification audit