Customization: | Available |
---|---|
Breaking Capacity: | High Voltage Circuit Breakers |
Operation: | Electric Type |
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NO. | ITEM | UNIT | VALUE | ||
1 | Rated voltage | kV | 24 | ||
2 | Rated short-time power frequency withstand voltage (1min) | kV | 65/79 (phase-to-phase, ground/opening) | ||
3 | Rated lightning impulse withstand voltage (peak) | kV | 125/145 (phase-to-phase, ground/opening) | ||
4 | Rated frequency | Hz | 50 | ||
5 | Rated current | A | 630, 1250 | 630, 1250, 1600 2000,2500,3150 |
630, 1250, 1600 2000,2500,3150 |
6 | Rated short-circuit breaking current | kA | 20/25 | 31.5 | 40 |
7 | Rated short-time withstand voltage | kA | 20/25 | 35.5 | 40 |
8 | Rated short-circuit duration | s | 4 | ||
9 | Rated peak withstand current | kA | 50/63 | 80 | 100 |
10 | Rated short-circuit closing current | kA | 50/63 | 80 | 100 |
11 | Secondary circuit power frequency withstand voltage (1min) | V | 200 | ||
12 | Rated single/back-to-back capacitor group breaking current | A | 630/400(40kA for 800/400) | ||
13 | Rated capacitor group closing surge current | kA | 12.5(frequency not exceeding 1000Hz) | ||
14 | Mechanical life | time | 20000 | ||
15 | Rated current breaking times (electrical life) | time | 20000 | ||
16 | Rated short-circuit current breaking times | 50(40kA≤30) | |||
17 | Allowable cumulative thickness of dynamic and static contact wear | mm | 3 | ||
18 | Energy storage time | s | ≤10 | ||
19 | Contact opening distance | mm | 14±1 | ||
20 | Overtravel | mm | 3.5±0.5 | ||
21 | Contact closing bounce time | ms | ≤2(40kA≤3) | ||
22 | Intermittency of three-phase opening and closing | ms | ≤2 | ||
23 | Average opening speed (contact separation - 8mm) | m/s | 1.5±0.2 | ||
24 | Average closing speed (8mm - contact closure) | m/s | 0.8±0.2 | ||
25 | Dominant circuit resistance | μΩ | ≤50(630A)≤45(1250A) ≤35(1600-2000A)≤25(2500A and above) | ||
26 | Rated operating sequence | Opening - 0.3s - Closing - 180s - Closing |