products detial
What we can do ? different country different requirement all we can offer.
Mid-voltage ( kV) | 3.6~35kv (E.g. 35,33,24,22,20,18,15.75,13.8,13.2,12,11,10.5,10,7.2,6.6,6.3,6 etc.) |
To Low voltage ( V) | 100-660V (E.g. 100,110,115,120,127,208,200,220,230,240,346,380,400,410,415,440,480,660 etc.) |
Frequency (HZ) | 50Hz or 60Hz |
ZW28-12 outdoor boundary vacuum load switch
1、 Overview
FZW28-12 series outdoor boundary vacuum load switch is applicable to the outdoor three-phase AC distribution system with rated voltage of 12kV and rated frequency of 50Hz. It is used for opening and closing load current and closing short-circuit current.
It is applicable to substations, industrial and mining enterprises, urban and rural power grid protection cities, rural power grid automatic distribution networks and places with frequent operation.
The boundary load switch is composed of fzw28-12 vacuum load switch and controller, which are electrically connected through aviation socket and outdoor sealed control cable. It can reliably judge the Ma inside and outside the detection boundary
Zero sequence current and phase to phase open circuit current can be suitable for distribution systems with different neutral grounding modes.
2、 Model and description
FZW28-12 / T 口 - 口
口 - rated short-circuit breaking current
口 - rated current
T-spring operating mechanism
12 - rated voltage
28 - Design serial number
W - Outdoor
FZ- vacuum load switch
2、 Technical parameters
No. | Name | Unit | Data | ||
1 | Rated voltage | kV | 12 | ||
2 | Rated insulation level | 1min Power frequency withstand voltage (Interpolar to the ground/fracture) | kV | Dry | 42/48 |
3 | Lightning shock pressure resistance (Interpolar to the ground/fracture) | Wet | 34 | ||
4 | Rated frequency | Hz | 50 | ||
5 | Rated current | A | 63 | ||
6 | Rated time-delay tolerance current and duration | kA/4s | 16 | 20 | |
7 | Rated peak tolerance current | kA | 40 | 50 | |
8 | Rated short circuit to turn off the closing current | kA | 40 | 50 | |
9 | Mechanical life | time | 10000 | ||
10 | Net Weight | kg | 198 | ||
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