LW36-126T3150-40
This 126kV outdoor circuit breaker adopts high-purity SF6 gas as the insulation and arc-extinguishing medium, paired with mature self-energy arc extinguishing technology. The optimized structural design delivers excellent dielectric performance and reliable fault resistance, enabling fast and safe isolation of short-circuit and overload faults. With low mechanical loss and low operating power consumption, the equipment maintains stable operational performance during long-term cyclic work, far exceeding the stability of conventional high voltage switchgear.
Built with a high-strength spring operating mechanism, the switchgear achieves precise, consistent closing and opening actions with an extremely low failure rate. The fully sealed integrated body undergoes professional anti-corrosion, waterproof, dustproof and salt-fog resistant processing. It adapts to diverse harsh outdoor working conditions, including high altitude, low temperature, coastal corrosive environments and windy and dusty areas, realizing all-weather safe and stable operation without frequent maintenance.
The matched 3150A large current carrying capacity and 40kA strong short-circuit breaking capability fully meet the high-load operation demands of backbone power grid projects. Featuring a compact and reasonable layout, the breaker is easy to install and debug on site, greatly reducing later operation and maintenance costs for power engineering projects. Its superior mechanical safety and operational stability ensure long-term uninterrupted operation of high-voltage power systems.
Widely recognized as reliable core equipment for 126kV power grid construction and renovation, this SF6 circuit breaker features high safety factor, outstanding environmental adaptability and ultra-long service life. Our factory provides standardized and customized technical solutions, complete qualification certifications, global logistics services and one-stop professional after-sales support to create high-value power equipment solutions for global engineering customers.
Product Details
LW36-126T3150-40
High-volt ac Sf6 dead tank circuit breaker
□Meaning of type
□Introduction
□LW36-126T high-voltage AC SF6 tank circuit breakers and current transfrmer circuit breaker will be together,and interrupters mounted horizontally in the grounded aluminum alloy housing,equipped with a CT26 spring operating mechanism,which The parts used are few,the layout is simple and compact,the whole is solid and durable,the switch is oil-free,the mechanical characteristics are excellent and the reliability is high.All the important parts adopt the CNC machining and machining center equipment processing. The bearings adopt imported international brand bearings,INA,SKF and other brands),mechanical life up to 10,000 timesIt can be used for control and protection of 72.5(126)kV power transmission and distribution system.It can also be used in contact open circuit and opening and closing capacitor banks.
口 Characteristic of structure
□The broaker introduces the three-phase porcelain-pole with single interrupter structure.Aspring operating mechanism is supplied and the mechanical actlon of the three-phase Is Inner connected.The gas of the SF6Is connected In the three-phase pole parts.A denslty controller wlth temperature compensatlon Is used to monltor the gas of the SF6.Because of the self-extInctlon arc control prlnclple and optImlzed deslgn,It Improves the efflclency of mechanlsm and reduces the operatlng power.
□Excellent breaking performance and long electrical life.
□The metal frame and the support of the circuit breaker are bended with a whole deep steel plate.The hot galvanizing is used for the surface treatments. The high strength stainless steel and aluminum are used for the fasteners and the three-phase transmission shaft respectively.The surface ofstructure box is made by stainless steel;the corrosion resistance of the mechanism is improved efficiently.
□High mechanism reliability and can be operated frequently.
□Because of the high insulation intensity and excellent contact movement,the breaking capacity current will not re-burn.
□T he circuit breaker has high outer insulation level and ratio creepage distance is greater than 31mm/kV.So it has excellent performance of resisting the filth and the earthquake,it is also can be operated safely under the environment with atrocious weather.
□High carrying ability:ithas high capability margin as the temperature of each contact rises when it is under temperature rise test in the circuit of 3780A (1.2 times of3150A).
□The appearance of the breaker is compact,and the installation and debugging is very easy.The maintenance is also very convenient.
口 Technical data
1)Main technical data of breaker
Note:external insulation level is changed by modified coefficient.Every 2000m of altiude,K=1.13:Atitude 3000m,K=1.28.
2)Main technical data of structure
3)Mechnical adjustment of the breaker
|
No. |
N a m e |
Unit |
Value |
|
1 |
Center distance between poles |
mm |
1750 |
|
2 |
Strode length of the moving contact |
mm |
120+8 |
|
3 |
Contact stroke length of the movlng contact |
mm |
25+3 |
|
4 |
Length of the inter phase operating connecting rod |
mm |
110+3 |
|
5 |
Switch-off speed |
m/s |
4.2-5m/s |
|
6 |
Switch-on speed |
m/s |
2.2-3m/s |
|
7 |
Switch-off time |
ms |
≤40 |
|
8 |
Switch-on time |
ms |
≤100 |
|
9 |
Break time |
ms |
≤60 |
|
10 |
switch-on/off tIme |
ms |
≤80 |
|
11 |
Switch-oiff/on time |
ms |
300 |
|
12 |
The time difference of the opening of three phases |
ms |
≤2 |
|
13 |
The time difference of the closing of three phases |
ms |
≤3 |
□The type and the specification of the circuit breaker.
□ Rated electric parameter(voltage,current,rated short-circuit breaking current and so on).
□ Environmental condition(temperature,altitude,filth level and so on).
□ Rated electrle parameter of control loop(rated voltage of energy storage motor,rated voltage of the openlng and closlng colls).
□The name and the number of the accessories when required.
□The connection direction of the primary upper terminal.
□Outline dimension
□As per the drawing below.
□LW36-126 tank circuit breaker Weight:2200kg.
□Front face area:4.7m²
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