Defective insulators in live working on a 550kV compact steel lattice tower

Journal Article · Tue Apr 01 00:00:00 EST 1997 · IEEE Transactions on Power Delivery

DOI:https://doi.org/10.1109/61.584373· OSTI ID:492164

Gela, G ^[1]; Kientz, H ^[2]; Fox, Jr, H J ^[3]; Mitchell, J D ^[4]; Lyons, P F ^[5]

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1. EPRI Power Delivery Center, Lenox, MA (United States)
2. Western Area Power Administration, Golden, CO (United States)
3. Public Service Electric and Gas, Bridgewater, NJ (United States)
4. Alabama Power Co., Birmingham, AL (United States)
5. EPRI, Haslet, TX (United States)

Research was conducted to determine the minimum number of healthy insulator units needed to ensure worker safety in live working on a compact 550 kV steel lattice tower. A large variety of worksite conditions was investigated. Test results confirm the conservative nature of the CIGRE formula for defective insulator units, and modifications to the formula are suggested. The recommended number of healthy units is 12 in a string of 24 units for the case of live work on the compact 550 kV tower, when the Portable Protective Gap (PPG) is used. Adjustment for altitude should be made above 900 m (3,000 ft).

• OSTI ID: 492164
• Journal Information: IEEE Transactions on Power Delivery, Vol. 12, Issue 2; Other Information: DN: Presented at the 1995 ESMO conference, October 29--November 3, Columbus, OH (US); PBD: Apr 1997
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
SAFETY ENGINEERING
POWER TRANSMISSION TOWERS
ELECTRICAL INSULATORS
HUMAN FACTORS
HEALTH HAZARDS
FLASHOVER