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FVW28-12(FFK) 户外分界真空负荷开关
          FVW28-12 (FFK) outdoor demarcation vacuum load switch



          使用环境条件 / Environmental conditions
          > 空气温度:-25℃ ~+70℃;                                   > The air temperature: -25℃ ~ + 70 ℃ ;
          > 海拔高度:2000m;                                        > Altitude: 2000m;
                                                               > Wind speed ≤ 35 m / s, relative humidity ≤ 95;
          > 风速≤ 35 米 / 秒,相对湿度≤ 95;
                                                               > Seismic intensity: 8 degree earthquake intensity;
          > 抗震烈度:地震烈度 8 度;                                     > Ground horizontal acceleration 1/4g, perpendicular to the ground
          > 地面水平加速度 1/4g,地面垂直加速度 1/8g,安全系数 1.7;                acceleration 1/8g, safety factor of 1.7;
                                                               > Pollution grade: III grade;
          > 污秽等级:III 级;
                                                               > Ice thickness: 10mm;
          > 覆冰厚度:10mm;                                         > System neutral grounding: ungrounded / arc suppression coil
          > 系统中性点接地方式:中性点不接地 / 消弧线圈接地 / 小电阻接地系统。               grounding / low resistance grounding system.

          主要技术参数 / The main technical parameters

           项目Project                                             单位Unit                 参数Parameter

           工作电源Power supply                                        V                   50Hz,AC220V
                                                                                    允许盘偏差20%纹波:≤2%
           工作电源Power supply                                        V
                                                                              Allow the disc deviation of 20% Ripple: ≤2%
           功耗Power                                                 W                        6W
           电压互感器Voltage transformer                               V,VA                  250V,0.1VA
           电流互感器Current Transformer                               A,VA                   1A,0.1VA
           零序电流互感器Zero sequence current transformer               A,VA                   1A,0.1VA
           输出节点容量Output contact capacity                          A,V                   2A/230V  DC
           负荷控制Load Control                                         s                 60s(可整定Settable)
           锁定时间lock time                                           ms            <600A:160ms;>600A:700ms
           零序电流设定值Zero sequence current setpoint                   A                     0.4A-2.0A
           序电流时间设定值Zero-sequence current time setting               s                     0.6s-15s
           绝缘电阻Insulation resistance                               MΩ                   500,DC1000v
                                                                                   电源,电源,合闸:AC,2000V
           绝缘电压Insulation voltage                                  V
                                                                             Power supply, power supply, closing: AC, 2000V
           额定电压,频率Rated voltage, frequency                       kV,Hz                    12,50
           额定电流Current Rating                                      A                        630
           额定短时耐受电流Rated short time withstand current              kV                   20kA/16kA,4S
           额定关合电流Rated making current                              kV                       50
           工频耐受电压对地/相间/断口                                          kV                     42/42/49
           Power frequency withstand voltage to earth / white / fracture
           雷电冲击耐受电压对地/相间/断口                                        kV                     75/75/85
           Lightning impulse withstand voltage to earth / white / fracture
           绝缘电阻Insulation resistance                               MΩ                      2000
           机械寿命,额定电流下电寿命                                        次Secondary              10000,5000
           Mechanical life, electrical life at rated current
           重量weight                                                kg                     198/195
                                                                                         0表压/≤1%
           SF6气体压力/年漏电率SF6 gas pressure / leakage rate of
                                                                                        0 psig / ≤1%
           CT变比CT ratio                                                                    630:1
           零序电流CT变比Zero sequence current CT ratio                                          20:1
           零序电压鉴相器ZPD/Zero-sequence voltage phase detector ZPD  mA,DEC                 2,-180°~+180°
           电源变压器SPS/Power transformer SPS                        kv/v,VA                10.5/230,100




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