| Type: | High-voltage |
|---|---|
| Structure: | Three-column Disconnector |
| Installation: | Indoor High-voltage |
| Operation: | Manual |
| Grounding Mode: | Grounding |
| Number of Poles: | Three Pole |
| Customization: |
|---|
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FZRN25- 12D series load switch and its combination of electrical appliances, including air pressure type load switch and vacuum load switch two categories, is the digestion and absorption of foreign advanced technology, combined with our user requirements to improve, by our factory to design, develop and become. Is a new generation of high voltage electrical products applicable to the city power grid construction and transformation needs. Performance of the GB/T3804 "3-63KV AC high voltage load switch" and GB/T16926 "AC high voltage load switch fuse combination" standard entrusted to the China National Quality Supervision and inspection center of high voltage apparatus according to the latest national standards to conduct a comprehensive test, the main product is the domestic leading level of similar products. Distribution system, the product is widely used in factories, schools, residential areas, high-rise buildings and other three-phase alternating current, voltage 10KV, rated frequency 50Hz, as the acceptance and distribution of electric energy use, and can be used for ring switchgear, box type substation, opening and closing of the power distribution equipment.
| No. | Item | Unit | FZN25- 12/T630-20 | FZN25-12D/T630-20 | FZRN25-12D/T125-31.5 |
| 1 | Rated voltage | kV | 12 | ||
| 2 | Rated frequency | Hz | 50 | ||
| 3 | Rated current | A | 630 | 125 | |
| 4 | Rated short time withstand current( 2s )/peak value | kA | 20/50 | ||
| 5 | Rated short-circuit making current | kV | 50 | 80 | |
| 6 | Rated short-circuit breaking current | kA | 31.5 | ||
| 7 | Rated resistive load dropout current | A | 630 | ||
| 8 | Rated closed loop dropout current | A | 630 | ||
| 9 | Rated cable recharging dropout current | A | 10 | 10 | |
| 10 | Power frequency withstand voltage, between poles, to earth/isolating distance | kA | 42/48 | ||
| 11 | Power frequency withstand voltage, between poles, to earth/isolating distance | kV | 75/85 | ||
| 12 | Short time withstand current peak of earth switch | kA | 20/50 | ||
| 13 | Power frequency withstand voltage of auxiliary loop | V | 2000 | ||
| 14 | Contact clearance of load break switch | mm | 8±1 | 9±1 | 8±1 |
| 15 | Average opening speed of load break switch | m/s | 1.0±0.2 | 1.0±0.2 | 1.0±0.2 |
| 16 | Average closing speed of load break switch | m/s | 0.6±0.2 | 0.7±0.2 | 0.6±0.2 |
| 17 | Different period of three-phase break and close brake | ms | ≤2 | ||
| 18 | Jump time of contact closing | ms | ≤5 | ||
| 19 | Rated contact pressure | N | ≤650 | ||
| 20 | Closing time difference of disconnecting switch and load break switch | ms | ≥10 | ||
| 21 | Opening time difference of disconnecting switch and load break switch | ms | ≥300 | ||
| 22 | Opening time of triggering the impinger | s | ≥0.045 | ||
| 23 | Opening time of release | s | ≥0.04 | ||
| 24 | Motorized opening time | s | ≥1 | 0.3 | 0.3 |
| 25 | Opening time (motorized) of disconnecting switch | s | ≥2 | ||
| 26 | Clearance of disconnecting switch and load break switch | m | >150 | ||
| 27 | Disconnecting switch and load break switch linkage mechanical life | time | >5000 | ||
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