户外高压真空负荷隔离开关
地区：浙江 宁波
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FZW37-40.5/1250-20型户外高压真空负荷隔离开关（以下简称负荷开关），三相敞和关合时外部不起弧，无火灾*危险。产品可手动或说电动操作。具有电寿命长，免维护等特点。
二、主要用途
2. Main uses
负荷开关是三相交流50HZ、额定电压40.5KV的词句外高压开关设备，主要用于开断负荷电流、空载变压器、电缆电流、电容电流和关合短路故障电流，与熔断器配合使用，可作为变压器的保护开关，代规断路器，广泛用于变电站、无油化改造以及农村电网操作频繁的场所。
四、使用环境条件
4. Environmental conditions
a、环境空气温度&plu*n;40℃；
a. The ambient air temperature is &plu*n;40℃;
b、污秽等级不大于1V级地区；
b. The pollution cl* is not larger than 1V;
c、海拔高度不*过1000米；
c. The altitude shall not be higher than 1000m;
d、相对湿度：日平均值不大于95%，月平均值不大于90%；日水蒸气压力平均值不*过2.2kpa，月水蒸气压力平均值不*过1.8kpa;
d. Relative humidity: the daily average value shall not be larger than 95%, and the monthly average value shall not be larger than 90%; the daily average value of water steam pressure shall not be larger than 2.2kpa, and the monthly average value of water steam pressure shall not be larger than 1.8kpa;
e、风速不*过34m/s；
e. The wind speed shall not exceed 34m/s;
f、地震烈度不*过8度；
f. The sei*ic intensity shall not exceed 8 degrees;
g、无火灾、*危险、化学腐蚀及剧烈震动的场所。
g. Places free of firing, explosion, chemical corrosion and severe vibration.
五、主要技术参数
5. Main technical parameters
5.1负荷开关的额定参数见下表：
5.1 The rated parameters of load switch are listed in the following table:
序号Serial number | 项 目 Items | 单 位 Units | 备 注 Remark | ||
1 | 额定电压 Rated voltage | KV | 40.5 | ||
2 | 额定频率 Rated frequency | Hz | 50 | ||
3 | 额定电流 Rated current | A | 1250 | ||
4 | 工频耐压（1min） Power frequency withstand voltage (1min) | 对地、相间（湿/干） To ground, interphase (wet/dry) | KV | 85/95 | |
5 | 隔离断口 Insulating break | 110 | |||
6 | 雷电冲击耐受电压（峰值） Lightning withstand voltage (peak) | 对地、相间 To ground, interphase | KV | 185 | |
7 | 隔离断口 Insulating break | 215 | |||
8 | 额定有功负载开断电流 Rated breaking current for active power load | A | 1250 | ||
9 | 额定闭环开断电流 Rated breaking current for closed loop | A | 1250 | ||
10 | 额定电缆充电开断电流 Rated breaking current for cable charging | A | 10 | ||
11 | 额定线路充电开断电流 Rated breaking current for circuit charging | A | 2.1 | ||
12 | 额定峰值耐受电流（峰值） Rated peak withstand current (peak) | KA | 50 | ||
13 | 额定短时耐受电流（4s） Rated short-time withstand current (4s) | KA | 20 | ||
14 | 额定短路关合电流（峰值） Rated short-circuit closing current (peak) | KA | 50 | ||
15 | 额定操作电压 Rated operating voltage | V | AC200\110或DC110\220 AC200\110 or DC110\220 | ||
16 | 二次回路工频耐压（1min） Power frequency withstand voltage for secondary circuit (1min) | V | 2000 | ||
17 | 机械寿命 Mechanical life | 次 Times | 5000 | ||
5.2负荷开关装配调整后的技术参数见下表：
5.2 Technical parameters of load switch after *embling and adjustment are listed in the following table:
序号 Serial number | 项目 Items | 单位 Units | 参数 Parameters |
1 | 触头开距（真空灭弧室） Contact switch (vacuum arc extinguishing room) | mm | 12&plu*n;1 |
2 | 平均合闸速度（真空灭弧室） Average closing speed (vacuum arc extinguishing room) | m/s | 0.6&plu*n;0.2 |
3 | 平均分闸速度（真空灭弧室） Average opening speed (vacuum arc extinguishing room) | ms | 1.0&plu*n;0.2 |
4 | 三相合闸不同期性 Non-synchronous three-phase closing | ms | ≤5 |
5 | 三相分闸不同期性 Non-synchronous three-phase opening | ms | ≤5 |
6 | 第相回路电阻 Resistance of phase circuit | μΩ | ≤100 |
7 | 隔离断口开距 Insulating break distance | mm | ≥400 |
8 | 隔离刀触头压力 Insulating contact pressure | n | 600&plu*n;50 |
