DXG-12(L)A.C. indoor high-voltage network SF6 switchgear
DXG-12(L)型户内交流高压六氟化硫环网开关设备是新一代以SF6负荷开关为主开关而整柜采用空气绝缘、适用于配电自动化、既紧凑又可扩充的金属封闭开关设备。环网柜具有结构简单、操作灵活、联锁可靠等特点,对各种不同的应用场合、不同的用户要求均能提供令人满意的技术方案。特别适用于小型二次配电站、开闭所、工矿企业、城市居民小区、机场、铁路、隧道、高层建筑等电力系统中作为接受和分配电能之用。
环网柜柜体采用2mm厚敷铝锌板、镀锌板或优质碳素冷轧钢板经数控机械加工成型,面板喷塑处理;开关柜由母线室、主开关室、电缆室、机构操作及控制室四个相互隔离的间隔组成。各隔室用钢板分隔,可避免故障部位影响到邻室。
开关室:配置三工位(或二工位)SF6负荷开关或真空断路器,开关下端带传感器。负荷开关柜可选配气压表或气压接点,可手动操作,也可加装电动操作机构。真空断路器适用于频繁操作网络系统,断路器配有弹簧操动机构,具有重合闸功能,并且动作可靠、寿命长。
操作控制室:小室包含操作机构和联锁装置以及辅助接点、脱扣线圈。进出线开关柜面板均带合、分闸指示;出线配备熔断器脱扣指示;上门面配带电显示器,一次模拟示意面贴,操作说明等;也可加装电动操作按钮指示灯及指示仪表。
序号No. | 名称Name | 单位Unit | 参数Parameter |
1 | 额定电压Rated voltage | KV | 12 |
2 | 额定频率Rated frequency | Hz | 50 |
3 | 额定电流Rated current | A | 630 |
4 | 工频耐压(相间、相对地/隔离断口)Power-frequency withstand voltage (between phases and phases to earth /across the isolating distance) | KV(1min) | 42/48 |
5 | 冲击耐压(相间、相对地/隔离断口)Lightning impulse voltage (between phases and phases to earth /across the isolating distance) | KV | 75/85 |
6 | 主母线额定电流Rated main generatrix current | A | 630 |
7 | 额定短时耐受电流Rated short-circuit standing current | KA | 20 |
8 | 额定短路持续时间Rated short-circuit duration | S | 4 |
9 | 额定峰值耐受电流Rated peak-value standing current | KA | 50 |
10 | 额定短路关合电流Rated short-circuit making current | KA | 50 |
11 | 额定有功负载开断电流Rated breaking current of power-load | A | 630 |
12 | 额定闭环开断电流Rated breaking current of closed circuits | A | 630 |
13 | 额定电缆充电开断电流Rated breaking current of cable electricize | A | 10 |
14 | 接地开关额定短时耐受电流Rated short-circuit standing current of earthing switches | KA | 20 |
15 | 接地开关额定短路持续时间Rated short-circuit standing times of earthing switches | S | 4 |
16 | 接地开关额定峰值耐受电流Rated peak-value standing current of earthing switches | KA | 50 |
17 | 主回路电阻the resistance of the main circuit | μΩ | ≤400 |
18 | 机械寿命Mechanical life | 次 | 负荷开关1000次,接地开关2000次Loading switch 1000 times earthing switches 2000 times |
19 | 防护等级Degree of protection | | 外壳IP3X Enclosure:IP3X |
20 | SF6气体额定压力(20℃表压)rated pressure of SF6 gas (20℃ gauge) | MPa | 0.04 |
21 | SF6气体年泄漏率SF6 gas leakage rate by a year | | 1% |
22 | 环境温度、湿度The ambient temperature and humidity | 上限+40℃,下限-25℃ Upper limit: +40℃,Lower limit: -25℃ 月平均≤90%,日平均≤95%(+25℃)Not be greater than 95% within a day, not greater than 90% within a month on an average. |
23 | 海拔高度Altitude | 不超过2500m No more than 2500m |
24 | 执行标准Product requirements of standard | GB3906、GB11022、DL403、DL/T404、DL/T539、IEC60298 |