Description
FZW28-12F series of outdoor demarcation vacuum load and shutoff is suitable for outdoor three-phase AC power distribution system with rated voltage of 12kV and rated frequency of 50Hz, as the function of opening and closing load current and closing short-circuit current. It is suitable for substations, industrial and mining enterprises, urban and rural power grids as protection cities, rural power grid automated power distribution networks, and places with frequent operations. Boundary load switch is composed of FZW28-12 vacuum load switch and controller, which are electrically connected through aviation sockets and outdoor sealed control cables. It can reliably judge the milliampere zero-sequence current and phase-to-phase interruption current inside and outside the detection range, and is suitable for power distribution systems with different neutral point grounding methods
Data Sheet
|
Model
|
FZW28-12
|
FZW28-24
|
|
|
Rated voltage
|
kV
|
12
|
24
|
|
Rated frequency
|
Hz
|
50
|
50
|
|
Rated current
|
A
|
630
|
630
|
|
Rated short-time withstand current
|
kA
|
20 (4s)
|
20(4s)
|
|
Rated peak withstand current (peak)
|
kA
|
50
|
50
|
|
Rated short circuit breaking current
|
kA
|
20
|
20
|
|
Mechanical endurance
|
Ops
|
10000
|
10000
|
|
Power frequency withstand voltage (1min) (wet)(dry) phase to phase/isolating distance
|
kV
|
42/48
|
65/79
|
|
Lighting impulse withstand voltage (peak) (wet)(dry) phase to phase/isolating distance
|
kV
|
75/85
|
125/145
|
Model Meaning
Installation Dimensions
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