Rated Voltage [kV] 420 Lightning impulse withstand voltage : - phase-to-earth [kV] 1425 - across the open switching device [kV] 1425 (+240) Switching impulse withstand voltage : - phase-to-earth [kV] 1050 - across the open switching device [kV] 900 (+345) Power frequency withstand voltage : - phase-to-earth [kV] 520 - across the open switching device [kV] 610 Continuous current [A] 3150 Rated short-circuit breaking current: [kA] 50 Duration [s] 3 DC time constant [ms] 45 First-pole-to-clear factor - 1.3 Capacitive current switching class C1/C2 C2 Line charging breaking current [A] 400 Cable charging breaking current [A] 400 Single/Back to Back capacitor bank switching current [A] - OTHER INFORMATION Filling pressure at 20°C MPa(abs) 0,XX (0,XX SF6/0,XX N2) Insulating gas type - SF6(SF6/N2; SF6/CF4) CT brackets included on support structure Yes/No No MECHANICAL CHARACTERISTICS Opening time [ms] (XX±X) Closing time [ms] ≤60 Breaking time [ms] ≤50 Mechanical endurance class M1/M2 M2 Rated operating sequence - O-0.3s-CO-3min(s)-CO EARTHING SWITCH DATA (referring to IEC Earthing switch built on to DCB - No FIBER OPTIC CURRENT SENSOR (FOCS) Include FOCS with DCB Yes/No Yes Rated current [A] >400 Corresponding accuracy class to rated current - 0.2s/5TPE Communication protocol - IEC 61850-9-2LE Communication output - Optical Ethernet Temperature range [°C] -40 to +50 CONTROLLED SWITCHING Controlled switching required Yes/No No Application (No-load Overhead line, Transformer, - - Capacitor Bank, Filter Bank, Shunt Reactor, Other) Table 13 Specification DCB 550kV Specific data for DCB All circuit breakers should be tested in accordance with IEC & Requested ratings Offered ratings IEC 62271-108 Type designation - Show product name Type of operation - 1-pole Number of - 3 Type of drive Spring/Motor Spring
Rated Voltage [kV] 420 Lightning impulse withstand voltage : - phase-to-earth [kV] 1425 - across the open switching device [kV] 1425 (+240) Switching impulse withstand voltage : - phase-to-earth [kV] 1050 - across the open switching device [kV] 900 (+345) Power frequency withstand voltage : - phase-to-earth [kV] 520 - across the open switching device [kV] 610 Continuous current [A] 3150 Rated short-circuit breaking current: [kA] 50 Duration [s] 3 DC time constant [ms] 45 First-pole-to-clear factor - 1.3 Capacitive current switching class C1/C2 C2 Line charging breaking current [A] 400 Cable charging breaking current [A] 400 Single/Back to Back capacitor bank switching current [A] - OTHER INFORMATION Filling pressure at 20°C MPa(abs) 0,XX (0,XX SF6/0,XX N2) Insulating gas type - SF6(SF6/N2; SF6/CF4) CT brackets included on support structure Yes/No No MECHANICAL CHARACTERISTICS Opening time [ms] (XX±X) Closing time [ms] ≤60 Breaking time [ms] ≤50 Mechanical endurance class M1/M2 M2 Rated operating sequence - O-0.3s-CO-3min(s)-CO EARTHING SWITCH DATA (referring to IEC Earthing switch built on to DCB - No FIBER OPTIC CURRENT SENSOR (FOCS) Include FOCS with DCB Yes/No Yes Rated current [A] >400 Corresponding accuracy class to rated current - 0.2s/5TPE Communication protocol - IEC 61850-9-2LE Communication output - Optical Ethernet Temperature range [°C] -40 to +50 CONTROLLED SWITCHING Controlled switching required Yes/No No Application (No-load Overhead line, Transformer, Capacitor Bank, Filter Bank, Shunt Reactor, Other) - - Table 13 Specification DCB 550kV Specific data for DCB All circuit breakers should be tested in accordance with IEC & IEC 62271-108 Requested ratings Offered ratings Type designation - Show product name Type of operation - 1-pole Number of - 3 Type of drive Spring/Motor Spring
TechnicalSpecification_DCB_72-800kV_EN_2015-10-23.docx