siemens.com/energy Gas-insulated switchgear Type 8DQ1, 420 kV, 63 kA, 5000 A A new dimension in compactness economic efficiency high reliability M M long service life safe encapsulation M very high degree of gas-tightness low life cycle and maintenance costs easy access and ergonomic design high availability M M reliable operation even under extreme environmental conditions environment-compatible design Answers for energy. Technical data Switchgear type Rated voltage 8DQ1 up to 420 kV Rated frequency 50/60 Hz Rated power frequency withstand voltage (1 min) 650 kV Rated lightning impulse withstand voltage (1.2/50 µs) 1,425 kV Rated switching impulse withstand voltage (250/2500 µs) 1,050 kV Rated normal current busbar up to 5,000 A Rated normal current feeder up to 5,000 A Rated short-circuit breaking current / break time up to 63 kA / < 2 cycles 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 Bay height, depth 2,200 mm 3,800 mm x 5,800 mm depending on bay arrangements 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 60–250 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 30002, c4bs-Nr. 7460 Order No. E50001-G630-A228-X-4A00 | Printed in Germany | fb 5475 PD 470086 WS 03131.0 | © 03.2013, Siemens AG siemens.com/energy