China Fzn25 12kv Vacuum Interrupter for Indoor Load Breaking Switch (102B)

Product Description

FZN25 12KV Vacuum Interrupter For Indoor Load Breaking Switch(102B)

Main Technical Data

Main Technical Data
Rated Voltage	12kV
Rated Current	630A
Rated Frequency	50Hz
Rated Short-time power frequency withstand voltage(1min)	42kV
Rated Lighting impulse withstand voltage	75kv
Rated short-time withstand current	16/20KA
Rated peak withstand Current	40/50kA
Rated short-circuit making current	40/50kA
Rated short-circuit making current	630A
Rated active load breaking current	630A
Rated cable charging breaking current	10A
Rated sigle capacitor bank breaking current	400A
Rated duration of short-circuit	4s
Mechanical life	10000times
Contact closing force due to bellows and atmosphere	70±40N
Counterforce at rated contact stroke	120±50N
Circuit resistance at rated contact force	≤45μΩ
Shelf life	20 years
Contact erosion limit	3mm
Weight of moving parts	≤0.7kg
Mechanical Data Required for matched vacuum switchgear
Rated contact stroke	6±1mm
Average opening speed	1.0±0.2m/s
Average closing speed	0.65±0.2m/s
Added contact force	700/900±50N
Contact bouncing duration at closing operation	≤2ms
Contact bouncing bank amplitude of opening operation	≤2mm
Three-pole simultaneity	≤1ms