The (H)GW series outdoor Air/Load breaker switch is a three-phase AC 50Hz /60Hz outdoor medium-voltage switchgear, which can open and close the power line and can see the obvious disconnect distance.
Application voltage levels include 12kV, 24kV and 36kV
Application standard:lEC62271-102
2.1. height above sea level: ≤3000m
2.2. Air temperature:-40℃~+50℃
2.3. Relative humidity: Daily mean 95%
monthly average 90%
2.4.Maximum wind speed: s34m/ s
2.5.Earthquake intensity: <8 degree
2.6.lcing thickness:<10mm
2.7.Thickness of snow:<35mm
2.8.lrradiance:<0.1W/cm2
2.9.Pollution grade:Ⅲ class、IVclass
2.10. Installation site: No fire disaster, explosion danger, chemical corrosion and frequent strenuous vibration places
| Item | Unit | Data | ||
|---|---|---|---|---|
| Rated voltage | kV | 12 | 24 | 36 |
| Rated frequency | Hz | 50/60 | ||
| Rated current | A | 400 / 630 | ||
| Rated short-circuit withstand/breaking current | kA | 12.5 | ||
| Rated short-circuit making current (peak) | kA | 31.5 | ||
| Rated peak withstand current | kA | 31.5 | ||
| Rated short-circuit time | Sec | 1 | ||
| Mechanical Operations | Times | 5000 | ||
| Power frequency withstand voltage (1 min) | kV | 28/32 | 50/60 | 70/80 |
| Lightning impulse withstand voltage (peak) | kV | 76/85 | 125/145 | 170/190 |
Pole-mounted Load Breaker Switch
| ltem | Unit | Data | |||
|---|---|---|---|---|---|
| Rated voltage | kV | 12 | 24 | 36 | |
| Rated frequency | Hz | 50/60 | |||
| Ratedcurrent | A | 200/400/630 | |||
| Rated short circuit withstand current(IS) | kA | 20 | |||
| Rated peak withstand current(IS) | kA | 50 | |||
| Rated making current | kA | 31.5-50 | |||
| Rated insulation leve(HV) | Lightning impulse | kA | 75/85 | 125/145 | 170/195 |
| Power frequency withstand | 45 | 55/75 | 75/100 | ||
| Rated short circuit breaking capacity cos.中(0.7) Without maintenance of contacts | |||||
| For active circuits | 20breakings | 630 | 630 | 400 | |
| 30breakings | A | 400 | 400 | 300 | |
| 40breakings | 300 | 300 | 250 | ||
| 50breakings | 250 | 250 | 170 | ||
| 75breakings | 170 | 170 | 160 | ||
| 120breakings | 110 | 110 | 110 | ||
| 200breakings | 65 | 65 | 65 | ||
| 280breakings | 50 | 50 | 50 | ||
| For ring circuits | A | 630 | 400 | 250 | |
| Rated breaking capacity of transformer | A | 50 | |||
| Rated breaking capacity of cable charging | A | 11 | |||
| Rated breaking capacity of earthing fault | A | 56 | |||
Note: The LBs type on load break switch (Switch disconnector) is equipped with stored energy released by fuse strike pins. The stored energy mechanism for the opening oparation is relaased by fuse strike pins.
The trip actuator is mounted on top of the fuse contact clip.
The DIN ivpe fuse is held in soring tvpe conlacts, secured by a tail lever, All the components are made of stainless steel, to preventcorrosion, have Jong live, and in the reset position. The trip lever is parked in an over-centre position.
Pole-mounted Air/Load breaker switch is a special switch, it is mainly used in the Pole to ensure the safety of a class of safety switch, generally speaking, the column switch is installed on the pole, its main role is used to isolate the high voltage circuit, is a typical outdoor isolation switch.
1. Switching of the distribution system: the pole-mounted switch can be used to switch different power supplies.
2. Load distribution: the pole-mounted switch can be used to distribute the power load to different circuits to ensure the load balance between each circuit and avoid overload.
3. Fault isolation of the distribution network: When the distribution network fails, the pole-mounted switch can quickly cut off the fault circuit to avoid the expansion of the fault.
4.Maintenance and overhaul: the pole-mounted switch can also be used for maintenance and overhaul work
5. Remote control of the power system: In modern power systems, the pole-mounted switch can be connected with the monitoring system to achieve remote control to improve the flexibility and efficiency of the operation.
