www.venetaisolatori.it [email protected] PGS bushing air-SF ˄ FEATURES ƵƐŚŝŶŐ ĨŽƌ ŽƵƚĚŽŽƌ ĂƉƉůŝĐĂtŝŽŶƐ ĨŽƌ ^&ϲ ŝŶƐƵlaƚĞĚ ĚĞǀŝĐĞƐ It is composed of two parts: A, red epoxy bushing consƟtutes the core of the insulator with solid mechanical strength and suitable for SF6 use. B, silicone rubber cover granƟng great insulaƟng performances in highly polluted environments. Resin bushing “A” can be used alone thanks to its EN 50181 C connecƟon. It has to be connected with the silicon cover “B” or with cable terminaƟon before puƫng into operaƟŽŶ the electrical equipment Resin bushing is supplied with an EPDM O-ring gasket and plasƟc safety cap for C connecƟŽŶ cone, while B part is supplied with a small bag of silicone grease and nuts/washers set made of nickel-plated copper for the outdoor cable connecƟon. It has to be ĨĂƐƚĞŶĞĚ to the tank through six OT58 brass fittings and, upon request, with an aluminium Ňange that improves stability. OperaƟng temperature from -25°C to +100°C. STANDARDS IEC 60137, IEC 60815, IEC 60507, IEC 61109 (annex C) ROUTINE TESTS • Visual and dimensional check (A&B) • Glass transŝƟon temperature (A) • Dry power frequency withstand (A) • PaƌƟal discharges (A) • Gas leakage test (helium) (A) TESTS ON DEMAND • Dry lighƟng impulse voltage (A or A&B) • Temperature rise test (B) • ƌƟĮcial polluƟŽn test: 1000h salt fog method (IEC 60507) • Ageing test under operaƟng voltage, simulaƟng weather condiƟons – 5000h muůƟple stresses (IEC 61109) Name A B Max. Operating voltage Lightning impulse voltage withstand Power frequency voltage withstand Rated current Creepage distance PGS 24 1990 cable joint 24 kV 125 kV 55 kV 630 A --- 1990 2000 >780 PGS 36 1990 cable joint 36 kV short type 170 kV 77 kV --- 1990 3000 >1050 1996 cable joint 36 kV long type 1996 3000