www.siemens.com/energy Gas-insulated switchgear Type 8DN8, 170 kV, 63 kA, 4000 A A new dimension in compactness highest technical ratings in its class economic efficiency M M high reliability long service life safe encapsulation very high degree of gas-tightness low life cycle and maintenance costs easy access and ergonomic design M high availability reliable operation even under extreme environmental conditions Answers for energy. Technical data Switchgear type Rated voltage 8DN8 up to 170 kV Rated frequency 50/60 Hz Rated power frequency withstand voltage (1 min) 325 kV Rated lightning impulse withstand voltage (1.2/50 µs) 750 kV Rated normal current busbar up to 4,000 A Rated normal current feeder up to 4,000 A Rated short-circuit breaking current / break time up to 63 kA Rated peak withstand current up to 170 kA Rated short-time withstand current (3 s) up to 63 kA Leakage rate per year and gas compartment ≤ 0.5 % routine test ≤ 0.1 % type test Bay width 1,000 mm depending on bay arrangements Height, depth Driving mechanism of circuit-breaker stored-energy spring Rated operating sequence O-0.3 s-CO-3 min-CO CO-15 s-CO Rated supply voltage 110–250 V DC Expected lifetime > 50 years Ambient temperature range –30 °C to +40 °C Standards IEC/IEEE/GOST Other values on request Siemens AG Energy Sector Freyeslebenstrasse 1 91058 Erlangen, Germany Power Transmission Division Dispo 30000, c4bs-Nr. 7460 Order No. E50001-G620-A141-V1-4A00 | Printed in Germany | fb 5092 WÜ 470086 WS 07122.0 | © 07.2012, Siemens AG www.siemens.com/energy