Overview:
Column installed insulation load switch,type FZW-12/24/40.5-20,is suitable for the rated voltage
12/24/40.5kV,rated current 400A、630A、50/60Hz power grid open circuit、load current inclosed Power system、
Over load curren.This load switch can separate those broken distribution line automatically.
With the latest technology,it has the newest electronic controller.The switch can be used by manual operation,
Electric operation and operation from along distance.Electronic controller is installed in a stainless steel cabinet
Which is suitable for using under all kinds of climatic conditions.In addition,there are some wired and wireless
Modem installed in the cabinet through which it can realize the remote monitoring and control.Simple installation
On column is convenient,fast,and also can reduce the construction cost.
The standard conditions of our SF6 high voltage insulator switch:
Operating conditions for SF6 gas load switch to adapt to:
(1) . Ambient air temperature :upper limit+50℃，lower limit of -40℃。
(2) Relative humidity:100%
(3) Elevation does not exceed 1000m;2000m;3000m;5000m.
(4) The pressure does not exceed 700pa( equivalent to wind speed of 34m/s)
(5) Earthquake intensity:8 degree
(6) Installation site：No fire,no explosion hazards, no chemical corrosion and recurrent severe vibration.
(7) Pollution class: classⅢ,classⅣ.
Features of SF6 insulated load switch:
(1)SF6 gas-insulted
(2)SF6 gas is a kind of nontoxic, nonflammable and electrical insulating gas.
It has the excellent characteristic of arc extinction.
Note:Each switch before leaving the factory has been filled with SF6 gas,
sealed,and test according IEC60265-1(1988),GB40.504-1990 standard.
Parameters ratings of SF6 high voltage insulator switch:
No. | Name | Unit | Data | ||||
Product mode | FZW-12 | FZW-24 | FZW-40.5 | ||||
1 | Rated voltage | kV | 12 | 24 | 40.5 | ||
2 | Rated frequency | Hz | 6/10/11 | 15/17.5/20 | 3/36/40.5 | ||
3 | Rated insulation level( the filling SF6 gas 0.07Mpa、20℃） | （Lightning impulse withstand voltage) | relatively | kV | 75 | 125 | 185 |
Fracture | 85 | 145 | 215 | ||||
Power frequency withstand voltage 1 min | relatively | kV | 42 | 64 | 95 | ||
Fracture | 50 | 79 | 110 | ||||
4 | Insulation level of zero gauge pressure | Power frequency withstand voltage 1min | kV | 30 | |||
RP-pressure 1min | 30 | ||||||
The highest phase voltage 5min | 9 | ||||||
5 | Rated current | A | 630(400) | 630(400) | 630(400) | ||
6 | Rated breaking load current( 0.07Mpa/20℃） | A | 630(400) | 630(400) | 630(400) | ||
7 | Breaking current under zero gauge pressure | A | 630(400) | 630(400) | 630(400) | ||
8 | Peak withstand current | kA | 50 | 50 | 50 | ||
9 | Rated short time making current | kA | 50 | 50 | 50 | ||
10 | Rated short time withstand current | KA/S | 20/4 | 20/4 | 20/4 | ||
11 | Rated cable charging breaking current | A | 25 | 25 | 25 | ||
12 | Rated line charging breaking current | A | 16 | 16 | 16 | ||
13 | Rated closed-loop breaking current | A | 630(400) | 630(400) | 630(400) | ||
14 | Exciting current | A | 21 | 21 | 21 | ||
15 | Rated current breaking times | Times | ≥400
| ≥400
| ≥400
| ||
16 | Rated working pressure | Mpa | 0.05
| 0.07
| 0.1 | ||
17 | Per-phase main circuit resistance | μΩ
| ≤150
| ≤150
| ≤150
| ||
18 | Relative gas leakage rate | year | ≤1%
| ≤1%
| ≤1%
| ||
19 | SF6 gas moisture content | Factory transfer of value | ppm | ≤150
| ≤150
| ≤150
| |
Switch running value | ppm | ≤300
| ≤300
| ≤300
| |||
20 | Operation of echanical stability | times | 6000
| 6000
| 6000
| ||
21 | Rated operating voltage and auxiliary circuits rated voltage | V | DC 220/ 110/48/24
| DC 220/ 110/48/24
| DC 220/ 110/48/24
| ||
AC 220/110 | AC 220/110 | AC 220/110 | |||||
22 | Weight | Type M | kg | 115 | 125 | 135 | |
Type A | 135 | 145 | 155 | ||||
23 | Institutions boxes and controlled protection class | IP44 IP55 | |||||
24 | Type of Mounting | The lifting type( suspended)/block(horizontal) | |||||
Size:
Dimensions(mm) | Installation dimentions (mm) | Casing creepage distance(mm) | |||
A | B | C | Long*Width | ||
12Kv | 225 | 435 | 500 | 500*125(280) | 540 |
24Kv | 300 | 435 | 500 | 500*125(280) | 750 |
40.5Kv | 350 | 435 | 500 | 700*125(280) | 1050 |
