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Side mounting type indoor High Voltage Vacuum Circuit Breaker
VTZ/R-12
1.General Description
VTZ/R-12/T Side mounting Indoor High Voltage Vacuum Circuit Breaker is widely used for 3phase AC 50(60)HZ and 3.6-24KV indoor device,which is used for protecting and controlling electrical equipment in fields of industry&mining enterprise. power plants and substation.
2.Applying conditions:
Ambient temperature;-10℃----+40℃
Relative humidity:daily average ≤95%,monthly average ≤90%
Seismic intensity :≤8
Saturated vapor pressure:daily average ≤2.2kPa,monthly average≤1.8kPa;
Altitude:≤1000m;(Not including special requirement)
Service environment:should be avoided fire, explosion risk, serious pollution, chemical corrosion and violent vibration
3.Structural characteristics:
1.Adopt module operating mechanism,integrated stored energy hand shank and reasonable whole structure.
2. Use module design to easy dis-assemble and replace broken parts. ;
3.Adopt Solid-closure technology in primary circuit to improve insulation and achieve free maintenance.
4.Long life,The circuit breaker meet M2 &E2.
5.Own excellent breaking property to make and break inductance and capacitance.
6.suitable for KYN-28and XGN-12 and replace VD4-12 and HVX-12.
7.Flexible main circuit connection way to meet different requirement of switchgear .
4.Technical specification
No. | Item | Unit | Data | ||
1 | Rated voltage | kV | 12 | ||
2 | Rated frequency | Hz | 50/60 | ||
3 | Rated insulation levels | Rated power frequency withstand voltage/1min | kV | 42 | |
Rated lighting impulse withstand voltage | kV | 75 | |||
4 | Rated current | A | 630 | 1250 | |
5 | Rated short circuit breaking current | kA | 20 | 20 | |
25 | 25 | ||||
31.5 | |||||
6 | Rated short circuit making current(peak) | kA | 50 | 50 | |
63 | 60 | ||||
80 | |||||
7 | Rated duration of short circuit | s | 4 | ||
8 | Rated operating sequence | O-0.3s-CO-180s-CO | |||
9 | Mechanical life | Times | 30000 |
5.Overall drawing
6.Secondary connection diagram