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GENERAL
LW38-40.5w outdoor AC High-Voltage Sulfur Hexafluoride(SF6) circuit breaker (hereinafter referred to as "circuit breaker") is an outdoor high-voltage distribution switchgear with three-phase AC 50Hz and rated voltage of 40.5kV. It can be used to open and close rated current and fault current, switch on and off capacitor banks, and switch lines. It is especially suitable for frequent operation and can also be used as a contact circuit breaker.
The circuit breaker uses SF6 gas as the arc extinguishing and insulation quality is installed outdoors and adopts the elevated porcelain column structure.
The circuit breaker complies with technical standards such as GB / t1984-2014 high voltage AC circuit breaker, DL / t402-2016 high voltage AC circuit breaker, and JB / T 9694-2008 high voltage AC sulfur fluoride circuit breaker.
MODEL DESCRIPTION
USAGE: ENVIRONMENTAL CONDITION
- Altitude: ≤ 1000m, If the altitude is higher than 1000m, the rated insulation level shall be corrected accordingly.
- Ambient temperature: -40 oC ~ +45 oC,
- Maximum daily temperature difference: 25 K
- Humidity: Average daily relative humidity: 95%, average monthly relative humidity: 90%.
- Sunshine intensity: not more than 0.1W/cm 2
- Wind Speed: 34m/s
- Wind pressure: 700Pa
- Pollution level: e - level
- Icing thickness: Not more than 10mm
- Resistance to floor drain: horizontal acceleration 0.3g, vertical acceleration 0.2g
MAIN ADVANTAGES
☆ SF6 gas arc extinguishing and insulation, excellent insulation performance;
☆ Simple structure, long maintenance cycle;
☆ Strong breaking capacity and long mechanical life;
☆ Either built-in or external current transformer, with high measurement accuracy;
☆ Built-in intelligent wet temperature controller to ensure the safe and reliable operation of the circuit breaker in cold regions;
☆ The overall sealing design of the shell is improved to effectively prevent the adverse effects of sandstorms and other bad weather on the circuit breaker.
MAIN TECHNICAL PARAMETERS
| No. |
Item |
Unit |
Data |
| 1 |
Rated frequency |
Hz |
50 |
| 2 |
Rated voltage |
kV |
40.5 |
| 3 |
Rated current |
A |
1250 / 1600 / 2000 |
| 4 |
Rated Short-Circuit Breaking Current |
kA |
31.5 |
| 5 |
Rated Short-Circuit Closing Current |
80 |
| 6 |
Rated Short-Time Withstand Current |
31.5 |
| 7 |
Rated Peak Withstand Current |
80 |
| 8 |
Rated Out of Step Breaking Current |
10 |
| 9 |
Rated Short-Circuit Continuous Time |
s |
4 |
| 10 |
Rated Short-Circuit Breaking Current Breaking Times |
Times |
10 |
| 11 |
Rated short-time power frequency withstand voltage |
Interphase, to earth(dry) |
kV/min |
95/1 |
| Fracture (dry) |
118/1 |
| Interphase, to earth(wet) |
80/1 |
| Auxiliary circuit to earth |
2/1 |
| 12 |
Rated lightning impulse withstand voltage |
Interphase, to earth |
kV |
185 |
| Fracture |
215 |
| 13 |
Rated Operating Voltage and Auxiliary Circuit Rated Voltage |
V |
AC220, DC220 |
| 14 |
Main Circuit Rsistance |
Rated Current 1600A and below |
μΩ |
Not more than 90 |
| Rated Current more than 1600A |
Not more than 40 |
| 15 |
Closing Time |
Under AC Voltage |
ms
|
Not more than 100 |
| Under DC Voltage |
55 ~ 100 |
| 16 |
Opening Time |
Under AC Voltage |
Not more than 60 |
| Under DC Voltage |
30 ~ 65 |
| 17 |
Closing - Opening Time |
Not less than 120 |
| 18 |
Opening - Closing Time |
Not more than 50 |
| 19 |
Full Breaking Time |
Not more than 78 |
| 20 |
Rated Operating Order |
O - 0.3s - CO -180s- CO |
| 21 |
Moving Contact Travel |
mm |
96±2.5 |
| 22 |
Contact Opening Distance |
mm |
60±1.5 |
| 23 |
Closing buffer Stroke |
mm |
10±2 |
| 24 |
Phase-to-Phase opening Synchronism |
ms |
Not more than 3 |
| 25 |
Phase-to-Phase closing Synchronism |
ms |
Not more than 3 |
| 26 |
Phase spacing |
mm |
725 |
| 27 |
Annual Gas Leakage rate of SF6 |
% |
Not more than 0.5 |
28
|
SF6 Gas Moisture content (ppm, gauge pressure at 20 degrees Celcius) |
Handover Acceptance Value |
V/V |
Not more than 150 |
| Distance Travel |
Not more than 300 |
| 29 |
SF6 Gas Rated Pressure (gauge pressure at 20oC) |
MPa |
0.45 |
| 30 |
SF6 Gas Replenish Pressure (gauge pressure at 20 oC) |
0.42 |
| 31 |
SF6 Gas Locked Pressure (gauge pressure at 20oC) |
0.4 |
| 32 |
Mechanical Life |
Times |
6000 |
| 33 |
SF6 Gas Weight |
Kg |
5 |
| 34 |
Weight (with CT) |
800 |
| Weight (without CT) |
1000 |
| Note: If the altitude is over 1000m, the rated insulation level should be modified as appropriate. |
OUTLINE AND INSTALLATION DIMENSION
Our Customer
Our customers are located all over the world.
Test Reports
All products have undergone professional testing and certification.
Photos of Product
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