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IEC 60840/62067 porcelain outdoor termination (220kV). Oil-filled or SF6. High mechanical strength, self-cleaning. For heavy industrial pollution.
Application
IEC 60840/62067 porcelain outdoor termination (220kV). For EHV XLPE cable to overhead transmission line transition works, substation outdoor take-offs, and long-span river crossings. Oil-filled/SF6 gas-filled with factory-assembled stress cone. Porcelain insulator provides high mechanical strength, vandal resistance, self-cleaning surface for heavy industrial pollution class III-IV environments.
Core Strengths
Composite terminations do not offer the same abrasion/impact surface in heavy industrial zones. Our 220kV porcelain termination offers high strength, self-cleaning, oil/SF6, certified IEC 60840/62067, withstands switching/lightning impulse.
Standard
GB/T 11017.3-2014 IEC 60840-2011
Construction
☉〉 Conductor connection: Compression lug / connector
☉〉 Stress control: Geometric stress cone (silicone or EPDM)
☉〉 Insulation body: High-grade porcelain insulator with weather sheds
☉〉 Internal insulation: Insulating oil or SF₆ gas (oil-filled or dry design)
☉〉 Sealing: O-rings and gaskets for hermetic moisture protection
☉〉 Mounting: Flange for tower / substation installation
Features
☉〉 Voltage rating: 220kV for high‑voltage transmission lines
☉〉 Porcelain insulator offers excellent UV, tracking, and pollution resistance
☉〉 High mechanical strength to withstand wind, ice, and seismic loads
☉〉 Long service life with proven reliability in outdoor environments
☉〉 Oil‑filled or dry design options to meet different utility requirements
Product Data Sheet
Technical Specifications | |
Category | Item |
Operating Conditions | Max. System Voltage |
Rated Frequency | 50 Hz |
Altitude | ≤ 2000 m |
Operating Temperature | -55°C ~ +45°C |
Storage Temperature | 0°C ~ +35°C |
Installation Temperature | 5°C ~ +35°C |
Cable Shield Types | Tape / Wire / Corrugated Aluminum |
Design Data | Overall Height |
Weight (Excl. Cable) | 550 kg / 1212.54 lbs |
Creepage Distance | ≥ 8300 mm |
Bending Moment Resistance | ≥ 5000 kN |
Horizontal Tensile Strength of Connecting Wire | ≥ 2 kN |
Internal Withstand Pressure | 2.4 MPa |
Breakdown Pressure | 3.5 MPa |
Filling Fluid | PIB / Gel |
Electrical Performance | Type Test (IEC 62067) |
Heating Cycle Withstand Voltage | 254 kV |
Partial Discharge @ 191 kV | ≤ 3.8 pC (no detectable discharge at ambient & elevated temperatures) |
Lightning Impulse Withstand Voltage | ±1050 kV |
Routine Test (IEC 62067) | |
AC Withstand Voltage (wet, 1 min) | 460 kV |
Partial Discharge @ 191 kV | ≤ 3.8 pC (no detectable discharge) |
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