LW36-126
The LW36-126 is a standard outdoor high-voltage SF6 circuit breaker developed for 126kV high-power transmission and distribution systems. Manufactured in strict accordance with IEC 62271-100 and GB international standards, this professional high voltage switchgear is widely applied in urban power grids, large-scale substations, thermal power plants, wind and photovoltaic new energy power stations, as well as heavy industrial power systems for circuit switching, overload protection and short-circuit fault isolation.
Adopting high-purity SF6 gas as insulating and arc-extinguishing medium, the LW36-126 circuit breaker applies mature self-energy arc extinguishing technology. It delivers excellent dielectric insulation performance and reliable short-circuit breaking capability, ensuring fast and safe arc extinction under various grid fault conditions. Compared with traditional high voltage switchgears, this 126kV SF6 breaker features lower operating power, minimal mechanical friction loss and higher operational stability during long-term continuous operation.
Equipped with a high-reliability spring operating mechanism, the LW36-126 outdoor circuit breaker achieves accurate, stable and consistent closing and opening actions with an ultra-low failure rate. The integrated fully sealed structure adopts multi-process anti-corrosion, waterproof, dust-proof and salt spray resistant treatment. It can adapt to various complex harsh outdoor environments such as high altitude, low temperature, coastal humid and corrosive areas, realizing all-weather stable operation with minimal daily maintenance.
With reasonable structural optimization and compact layout, the LW36-126 SF6 circuit breaker is simple and convenient for on-site installation, commissioning and later maintenance. It effectively reduces the operation and maintenance costs of power grid projects while ensuring safe and efficient operation of high-voltage power systems. The product features high safety coefficient, strong environmental adaptability and outstanding durability.
As mainstream core equipment for 126kV power grid construction and upgrading, the LW36-126 high voltage circuit breaker has been widely recognized by global power engineering customers. We provide factory direct sales, customizable technical solutions, complete certification documents and professional global after-sales service to support various high-voltage power infrastructure projects worldwide.
Adopting high-purity SF6 gas as insulating and arc-extinguishing medium, the LW36-126 circuit breaker applies mature self-energy arc extinguishing technology. It delivers excellent dielectric insulation performance and reliable short-circuit breaking capability, ensuring fast and safe arc extinction under various grid fault conditions. Compared with traditional high voltage switchgears, this 126kV SF6 breaker features lower operating power, minimal mechanical friction loss and higher operational stability during long-term continuous operation.
Equipped with a high-reliability spring operating mechanism, the LW36-126 outdoor circuit breaker achieves accurate, stable and consistent closing and opening actions with an ultra-low failure rate. The integrated fully sealed structure adopts multi-process anti-corrosion, waterproof, dust-proof and salt spray resistant treatment. It can adapt to various complex harsh outdoor environments such as high altitude, low temperature, coastal humid and corrosive areas, realizing all-weather stable operation with minimal daily maintenance.
With reasonable structural optimization and compact layout, the LW36-126 SF6 circuit breaker is simple and convenient for on-site installation, commissioning and later maintenance. It effectively reduces the operation and maintenance costs of power grid projects while ensuring safe and efficient operation of high-voltage power systems. The product features high safety coefficient, strong environmental adaptability and outstanding durability.
As mainstream core equipment for 126kV power grid construction and upgrading, the LW36-126 high voltage circuit breaker has been widely recognized by global power engineering customers. We provide factory direct sales, customizable technical solutions, complete certification documents and professional global after-sales service to support various high-voltage power infrastructure projects worldwide.
Product Details
Overview
LW36-126/3150-40 self-energized AC high-voltage sulfur hexafluoride circuit breaker is an outdoor product, suitable for AC 50Hz, high voltage 145kV power grids with an altitude of no more than 3000 meters, an ambient temperature of no less than -40℃, and a pollution level of no more than IV. It is used to cut off the rated current, fault current or conversion line, and realize the control and protection of the power system. It can also be used as a connecting circuit breaker.
This product uses SF6 gas as the arc extinguishing and insulating medium, adopts the international self-energized arc extinguishing technology, and is equipped with a new spring operating mechanism. It has the characteristics of long electrical life, low operating power, low noise, and high reliability. It has a simple structure, small size, and a long maintenance cycle. It is the most reliable product in high-altitude areas or 132kV power systems, and can replace imported products of the same type.
Structural features
The circuit breaker adopts a three-phase porcelain column single-break structure, and the three phases are equipped with a spring operating mechanism, which is centrally arranged and three-phase driven, so the appearance is novel and exquisite. The circuit breaker uses SF6 gas as the insulation and arc extinguishing medium. During operation, the three-pole SF6 gas of the circuit breaker is connected, and the pressure and density progress are monitored by a pointer-type density relay. Due to the self-energy arc extinguishing principle and the optimized design in the circuit breaker motion system, the mechanical efficiency is effectively improved and the operating work is reduced;
Excellent breaking performance and long electrical life;
The mounting frame and support are made of high-quality steel plates that are bent as a whole. The surface treatment is all hot-dip galvanizing. All exposed fasteners are made of high-strength materials and hot-dip galvanized, or stainless steel standard parts are used. The mechanism box shell is made of stainless steel, so the product has excellent corrosion resistance;
High mechanical reliability and can be operated frequently;
Due to the inherent high insulation strength of sulfur hexafluoride gas and the contact movement adopted by the circuit breaker, the circuit breaker breaks the capacitive current without reignition;
The external insulation level is high, the external insulation is designed with a large creepage distance, the creepage ratio distance is> 31mm/kV, and the dirt resistance performance is excellent. It can also operate safely in harsh environments;
Strong current-carrying capacity: the temperature rise test is carried out at 1.2 times the rated current of 3150A, that is, 3780A, and there is still a large margin for the temperature rise at each point;
The overall appearance and structure of the product are compact, and the on-site installation and commissioning are convenient, and the maintenance workload is small.
Ordering instructions
Circuit breaker model and specifications;
Rated electrical parameters (voltage, current, breaking current, etc.)
Usage environment conditions (ambient temperature, altitude, environmental pollution level)
Rated control circuit electrical parameters (rated voltage of energy storage motor, rated voltage of opening and closing coil);
The name and quantity of spare parts, special equipment and tools required (need to be ordered separately);
The wiring direction of the primary upper terminal.
LW36-126/3150-40 self-energized AC high-voltage sulfur hexafluoride circuit breaker is an outdoor product, suitable for AC 50Hz, high voltage 145kV power grids with an altitude of no more than 3000 meters, an ambient temperature of no less than -40℃, and a pollution level of no more than IV. It is used to cut off the rated current, fault current or conversion line, and realize the control and protection of the power system. It can also be used as a connecting circuit breaker.
This product uses SF6 gas as the arc extinguishing and insulating medium, adopts the international self-energized arc extinguishing technology, and is equipped with a new spring operating mechanism. It has the characteristics of long electrical life, low operating power, low noise, and high reliability. It has a simple structure, small size, and a long maintenance cycle. It is the most reliable product in high-altitude areas or 132kV power systems, and can replace imported products of the same type.
Structural features
The circuit breaker adopts a three-phase porcelain column single-break structure, and the three phases are equipped with a spring operating mechanism, which is centrally arranged and three-phase driven, so the appearance is novel and exquisite. The circuit breaker uses SF6 gas as the insulation and arc extinguishing medium. During operation, the three-pole SF6 gas of the circuit breaker is connected, and the pressure and density progress are monitored by a pointer-type density relay. Due to the self-energy arc extinguishing principle and the optimized design in the circuit breaker motion system, the mechanical efficiency is effectively improved and the operating work is reduced;
Excellent breaking performance and long electrical life;
The mounting frame and support are made of high-quality steel plates that are bent as a whole. The surface treatment is all hot-dip galvanizing. All exposed fasteners are made of high-strength materials and hot-dip galvanized, or stainless steel standard parts are used. The mechanism box shell is made of stainless steel, so the product has excellent corrosion resistance;
High mechanical reliability and can be operated frequently;
Due to the inherent high insulation strength of sulfur hexafluoride gas and the contact movement adopted by the circuit breaker, the circuit breaker breaks the capacitive current without reignition;
The external insulation level is high, the external insulation is designed with a large creepage distance, the creepage ratio distance is> 31mm/kV, and the dirt resistance performance is excellent. It can also operate safely in harsh environments;
Strong current-carrying capacity: the temperature rise test is carried out at 1.2 times the rated current of 3150A, that is, 3780A, and there is still a large margin for the temperature rise at each point;
The overall appearance and structure of the product are compact, and the on-site installation and commissioning are convenient, and the maintenance workload is small.
Ordering instructions
Circuit breaker model and specifications;
Rated electrical parameters (voltage, current, breaking current, etc.)
Usage environment conditions (ambient temperature, altitude, environmental pollution level)
Rated control circuit electrical parameters (rated voltage of energy storage motor, rated voltage of opening and closing coil);
The name and quantity of spare parts, special equipment and tools required (need to be ordered separately);
The wiring direction of the primary upper terminal.
Online Inquiry
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