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FZN25-12D/T630-20 Indoor AC medium voltage vacuum load break switch is three-phase AC 50/60 Hz, rated voltage 12kV indoor installation, which is suitable for using in industrial and mining situation and so on enterprise substation and transformer and cable charging current. It had manual and motor operating mechanism that is advantageous to realize remote control. FZRN25-12D/T[]-31.5 indoor AC medium voltage vacuum load break switch with fuse combination, The versions combined with HRC fuses are particularly suitable for the protection of distribution transformers up to 1250 kVA, to break fault current and over load current.
Technical Information
Technical Specification |
|
|
Rated voltage | kV | 12 |
Rated current | A | 630 |
Rated power frequency | Hz | 50/60 |
Short circuit making capacity | kA Peak. | 50 |
Peak withstand current | kA Peak. | 50 |
Short time current | kA eff. |
|
1Sec. |
| 25 |
3Sec. |
| 20 |
Max. breaking capacity in co-operation with fuses IEC 62271-105(IEC 420 1990-11) | A | 2000 |
Max. fuse current(XRNT Fuse) | A | 200 |
Power frequency withstand voltage 50Hz 1 min,: |
|
|
- To earth and between poles | kV | 42 |
- Across isolating distance | kV | 48 |
Impulse withstand voltage 1.2/50μ s: |
|
|
- To earth and between poles | kV | 75 |
- Across isolating distance | kV | 85 |
Mechanism Endurance |
|
|
-Vauum interrupter | cycles | 10000 |
-Main switch and Earth Switch | cycles | 2000 |
Overall and installation dimensions
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