FN25-12D、FN25-12DR系列户内交流高压负荷开关及熔断器组合电器
| FN25-12D、FN25-12DR系列户内交流高压负荷开关及熔断器组合电器 |
| 从属类别：高压系列 |
| |  | | ◆ 主要用途Use | FN25-12D真空负荷开关和FN25-12DR组合电器三要用于12kV三相交流50Hz环网或终端供电的市区配电站和工业用电设备中，作负荷控制和短路保护用，由于组合电器对变压器等电器设备的保护使用比断路器更可靠，特别适用于环网、双辐射供电单元和箱式变电站。
It s used in the ring network、city distribution and industrial equipment of 12kV and three-phase AC 50Hz to control load and short-cicuit.Because the switch with fuse protects transformer etc.more reliably than circuit breaker.it is especially suitable for ring network、double radial distribution and package substation. | | ◆ 技术参数 Technical parameter | 序号
Number | 项目
Name | 单位
Unit | FN25—12D／
T630-20 | FN25—1 2D／
T100-31.5 | | 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 | 100 | | 4 | 额定绝缘水平
Rated insulating level | 1min工频耐受电压
1min power frequency withstand voltage | kV | 灭弧室断口30：对地及相间42：隔离断口48
Arc room break30.to ground and interphase42.isolating break48 | 雷电冲击耐压(峰值)
Lighting impulse resisting voltage(peak) | 对地及相间75、隔离断85
To ground.interphase 75、isolation break 85 | | 5 | 4S热稳定电流
4S heat-stabling current | kA | 20 | | | 6 | 额定动稳定电流(峰值)
Rated machine stabling current(peak) | 50 | | | 7 | 额定闭环开断电流
Rated closed switch-off current | | 630 50 | | 8 | 额定有功负载开断电流
Rated power load switch off current | A | 630 | | 9 | 额定电缆充电开断电流
Rated cable charging switch off current | 10 | | 10 | 额定转移电流
Rated transfer current | | 2000 | | 11 | 开断空载变压器容量
Switch-0ff no-load transformer capacity | kva | 1250 1.5 | | 12 | 额定短路开断电流
Rated shert-circuit switch-off current | | | 1.8 31.5 | | 13 | 额定短路关合电流(峰值)
Rated shert-circuit controlly current(peak) | kA | 50 | 80(预期值)
Prospesctive value | | 14 | 接地开关额定热稳定电流(2s)
Earth switch rated heat-stabling current(2S) | 20 | | 15 | 接地开关额定动稳定电流(峰值)
Earth switch rated machine stabling current(peak) | 50 | | 16 | 分合闸操作电源额定电压
on-and-off operating power rated voltage | V | DC220,110 AC220,110 | | 17 | 机械寿命(负倚开关／接地开关)
Mechanical life(load switch/earth switch) | 次(Times) | 10000／2000 | | | | |
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