It is a three phase H.V switch equipment of 12KV 50Hz for breaking or closing load current. No-load transformer cable charging current and closing short-circuit current.The load switch with earth switch can bear short-circuit current.
It is made up of FN12-12D load switch and S□LAJ-12(XRNT□-10)H.V current.Jointly breaking any current between short-circuit current.Meantime.Fuse box make the switch off of with the striker.
It is used in the ring network city distribution and industrial equipment of 12KV and three-phase AC 50Hz to cortrol load and short-circuit.Because the switch with fuse protecting transformer etc more reliably than circuit breaker .It is especialy suitable for ring network clouble radial distribution and package substtion.
A、The ambient air temperatrue : Max:+40oC. Min:-25oC. B、The altitude ≤1000m. C、The relatire humidity of air Daily average ≤95% . Monthly average ≤90% D、The ambient air should not be obviously polluted by corrosivity or the flammability gas and geam.Etc. E、Without frequent shake. F、Enviroment degree : gradeⅡ. If requirements are not mentioed above, users can fix them with the manufacturer .
Mechanism mode : S by hand. D by motor. Rated dynamic staility current Rated current Earth switch Rated voltage Designed number Indoor AC H.V load switch
Mechanism pattern : S handle operate. D by motor. Rated dynamic staility current Rated current Earth switch Witch switch Rated voltage Designed number Indoor H.V load switch with fuse box
技术参数和性能见下表
Techniacl parameter and performances(please see the table)
序号
Number
名称
Name
单位
Unit
FN12-12D/630
FN12-12D(R)D/100
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
雷电冲击耐受电压
Lighting impulse resisting voltage
KV
对地及相间75、隔离断85
To ground.interphase 75 isolation break 85
5
1min工频耐受电压
1min power frequency withstand voltage
KV
对地及相间42、隔离断48
To ground.interphase 42 isolation break 48
6
额定热稳定电流
Rated heat-stability current
KA
20(4S)
7
额定动稳定电流
Rated machine-stability current
KA
50
8
额定关合电流
Rated closing current(peak)
KA
50
50
9
额定短路开断电流(予期值)
Rated short-circuit breaking current (prospective value)
KA
31.5
10
临界开断电流时最大I2·t
Max.critical breaking currentI2·t
A2S
按熔断器特征曲线
fuse box characterisitic curve
11
最小开断电流
Min.Breaking current
KA
按熔断器特征曲线
fuse box characterisitic curve
12
额定转移电流
Rated transfer current
KA
1.5
13
最大开断电流(参考值)
Max.breaking current(reference value)
KA
1.8
14
开断空载变压器容量
Braking no-load transformer capcity
kva
1250
15
额定电缆充电电流
Rated cable charging current
A
10
16
额定有功负载电流开断次数
Rated power load current breaking times
次
time
≥100
17
额定有功负载电流开关分闸时间
Switch-off time of rated power load current switch on-and-off
S
>0.06
18
接地开关热稳定电流
Rated transfer current
KA
20(2S)
20(2S)
19
接地开关热稳定电流(峰值)
Rated transfer current
KA
50
50
20
电动机操作电源电压
Motor operating power valtage
V
交直流100、220、
pay 110、220 direct current
机械特征参数
Mechanical characteristic parameter
型号
Nunber
项目
Name
单位
Unit
FN12-12D/630
FN12-120D(R)D/100
1
动触头总行程
Machine contact qeneral travel
mm
200±8-2
2
相间中间距离(机构储能)
Interphase distance (before mechansim store energy)
note:1.When measuring auxiliary contact distance. Add 24mm static contact to the conducting pipe. 2.When measuring FN12-12(R)D main loop resistance , the fuse box can be replaced by the conducting bar ignoring its resistance.
结构示意和外形、安装尺寸图
Structure、appearance and installation diagram
FN12-12(R)D/100-31.5型户内交流高压负荷开关
FN12-12(R)D/100-31.5 Type indoor AC H.V Load switch
FN12-12D/630-50型交流高压负荷开关-熔断器组合电器
FN12-12D/630-50 Type AC H.V Load switch with fuse box