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Address: NO.61 Xiachen'an Road,Xiwu Street,Fenghua District,Ningbo,China.315505
Contact name:Peter
Ningbo Suntech Power Machinery Tools Co.,Ltd. |
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Indoor Long Electrical Life AC 10KV High Voltage Vacuum Load Break Switch
FZ(R)N2 1-12D indoor high-voltage alternatin-current vacuum load switch-fuse combination(“combination" for short) is used in power systems with an AC frequency of 50 Hz and a rated voltage of 10 kV to break load currents, overload currents and short-circuit currents. It particulaly applies to the places needing control, protection for oilfree maintenance-free and frequently-operated ring network power supply units and terminal power supply transformers.
The combination is charaterized by large breaking capacity, high safety and stability, long electrical life, support for frequent operation, less maintenance, etc. It has an apparent isolating gap, an earthing switch with making capability, an electric spring actuator and remote control capability.
1.1 Technical parameters
| Item | Unit | Reference value | |
| Rated voltage | kV | 12 | |
| Rated frequency | Hz | 50 | |
| Maximum rated current of the fuse | A | 125 | |
| Rated transfer current | A | 3150 | |
| Rated short-circuit breaking current(expected effective value) | kV | 31.5 | |
| Rated short-circuit making current (expected peak value) | kV | 80 | |
1min power-frequengy withstand voltage | Vacuum gap, interpole, pole to-ground | kV | 42 |
| lsolating gap | kV | 48 | |
Lightning impulse withstand voltage | Vacuum gap, interpole, pole-to-ground | kV | 75 |
| Isolating gap | kV | 85 | |
| Output energy of the fuse striker | J | 2-5 | |
1.2 Technical parameters for disconnector assembling
| Item | Unit | Reference value |
| Non-synchronous making of the three contacts | mm | ≥3 |
| Deviation of making of the three contacts | mm | ≤1 |
| Positive pressure of the contact switch | N | 260±30 |
| Size of the gap | mm | ≥150 |
| Circuit resistance | μΩ | ≤40 |
| Product standards | 1. GB 16926-1997 High-voltage alternating-current load switch-fuse combinations 2. IEC 60420 High-voltage alternating-current load switch-fuse combinations |
| Ambient condition | 1. The altitude: under 1000M. 2. The ambient temperature: -40℃-+40℃. 3. The relative humidity of air: monthly≤90%, daily≤95%. |
