Indoor Vacuum Lasttrennschalter

FZN25-12 Indoor AC HV vacuum Load break switch and FZRN25-12D Indoor AC HV vacuum load break switch with assembly fuse is the controlling and protecting equipment of three-phase 50Hz, 12kv distribution system, which is widely used in the situations of industrial and mining establishiments and power distribution station of urban buildings. Combined electrical apparatus can protec transformer and other electric equipments. it is used more reliable than circuit breaker. esbecially, it can be perfectly used in terminal substation and box-type substation of urban net and rural net in order to control and protect ring net birabdial electric unit. Standard a. GB38041.1-90 <<3-63KV AC H.V load switch>>. b. GB16926-97 <<AC H.V load switch with fuse box>> C. IEC265-1 HV Load Switch No.1 : Rated voltage between 1kv and 52kv high voltage load switch d. IEC420(1990). <<AC H.V load switch with fuse box>> Technical Parameters:NumNameUnitFZN25-12/630-20FZN25-12/(R)D125-31.5 1Rated voltagekV12 2Rated frequencyHz50 3Reated currentA630less than 200 4 Rated insulating level1min power frequency withstand voltagekV30 42/48 Lightning impulse resisting voltagekV75/85 5Rated 4S heat - stability currentkA20 6Rated duration of short circuitS4 7Rated dynamic currentkA50 8Rated active load breaking currentA630 9Rated closed loop breaking currentA630 10Rated cable charging currentA10 11Breaking no-load transformer capacity Max. breaking currentkvA1600 12 Rated short circuit breaking currentKA31.5 13Rated transfer currentA2000 14Fuse modelSDLAJ-12,SFLAJ-12 15 Impactor output energyJ2-516 Rated short circuit closing currentkA50 80(expected peak)17Earth switch heat-stability currentKA2018Earth switch rated duration of short circuitS219Auxiliary loop rated pressureV220,11020Mechanical enduranceoperations10000