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TZR-12~24 SF6 Gas insulated switchgear
1.General Description:
TZR-12~24 gas insulated switchgear is suitable for ring network terminal power distribution with power levels of 12kV 3-phase AC 50Hz and used for power acceptance,distribution , overload and short-circuit protection, especially applicable for oil-free and maintenance -free places with frequent operation. The switchgear cabinet complies with GB16926, GB3906 and IEC420-1990.
2.Working condition:
1.Ambient temperature;-10℃----+40℃
2.Relative humidity:daily average ≤95%,monthly average ≤90%
3.Seismic intensity :≤8
4.Altitude:≤1000m;(Not including special requirement)
5.Service environment:should be avoided fire, explosion risk, serious pollution, chemical corrosion and violent vibration
Uses should discuss with supplier if working condition exceed above range.
3.Technical data
Item | Unit | Data | |
Rated voltage | kV | 12~24 | |
Rated frequency | Hz | 50 | |
Rated current | A | 630,1250 | |
Rated short time withstand current(4S) | kA | 20,25,31.5 | |
Rated withstand current(peak) | kA | 50,63,80 | |
Rated short circuit breaking current | kA | 20,25,31.5 | |
Rated short circuit making current(peak) | kA | 50,63,31.5 | |
Rated insulation levels | Rated power frequency withstand voltage/1min | kV | 42 |
Rated lighting impulse withstand voltage | kV | 75 | |
Level of protection | Shell IP67 |
4.Overall drawing
1. Ring
2. SF6 gas manometer
3. Outer cabinet
4. Upper panel
5. Potential indicator
6. Bottom panel
7. Bottom door plate
8.Gas tank
9.Decompression valve
10. Earth-terminal board
11. Cable clip
12.Cable vault
13. Fuse
14. Operating handle
15. Operating mechanism