vacuum interrupter
Embedded poles
vacuum interrupter for outdoor circuit breaker
vacuum interrupter for indoor circuit breaker
vacuum interrupter for load break switch
vacuum interrupter for contactor
Products >> Embedded poles
ZKTF630/12-20 TF31411

low and high voltage ceramic vacuum interrupter for load break switch
Main Technical Data
Rated voltage                                             kv 12
Rated current                                             A 630
Rated frequency                                          Hz 50
Rated short-time power frequency withstand voltage(1min)      kv 42
Rated lighting impulse withstand voltage                      kv 75
Rated short-time withstand current                          kA 16/20
Rated withstand current(peak)                     kA 40/50
Rated short-circuit making current  kA 40/50
Rated closed-loop breaking current A 630
Rated active load breaking current                 A 630
Rated cable charging breaking current                        A 10
Rated single capacitor bank breaking currentrrent                                A 400
Rated duration of short-circuit                               s 4
Mechanical life                                            times 10000
Contact closing force due to bellows and atmosphere           N 70±40
Counterforce at rated contact stroke                           N 120±50
Circuit resistance at rated contact force                       μΩ ≤45
Shelf life                                                   years 20
Contact erosion limit                                        mm 3
Weight of moving parts                                                                              kg ≤0.7
Mechanical Data Required For Matched Vacuum Switchgear                                           
Rated contact stroke                                       mm 9±1
Average opening speed                                    m/s 1.0±0.2
Average closing speed                                     m/s 0.65±0.2
Added contact force                                        N 700/900±50
Contact bouncing duration at closing operation                 ms ≤2
Contact bouncing bank amplitude of opening operation          ms ≤2
Three-pole simultaneity                                      ms ≤1
Note:Rated characteristics can be given on requirment

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