Lw38-40.5 Outdoor High Voltage AC Sf6 Circuit Breaker

• Customization: Available
• Transport Package: Fumigation Wooden Box
• Trademark: YQALT
• Model NO.: LW38-40.5 outdoor high voltage AC Sf6 circuit brea

Product Description

LW38-40.5 outdoor high voltage AC Sf6 circuit breaker

Product Description

Product Overview:
The LW38-40.5 Outdoor AC High Voltage Sulfur Hexafluoride Circuit Breaker is an advanced outdoor power distribution switchgear designed for use in three-phase AC systems with a frequency of 50Hz and a rated voltage of 40.5kV. It is capable of interrupting both rated and fault currents and is suitable for various applications such as controlling capacitor banks and line conversions. This circuit breaker is particularly well-suited for frequent operation, functioning effectively as a contact breaker.

Key Features:

    1.    SF6 Gas Insulation and Arc Extinguishing:
The circuit breaker utilizes sulfur hexafluoride (SF6) gas as both an arc extinguishing and insulating medium, ensuring reliable performance and enhancing the device's longevity. SF6 is known for its excellent insulating properties, making it ideal for high-voltage applications.
    2.    Outdoor Installation with Porcelain Column Structure:
The LW38-40.5 is designed for outdoor use and features an elevated porcelain column structure, providing robust insulation and protection against environmental factors. This makes it highly durable and capable of operating in various weather conditions.
    3.    Rated and Fault Current Handling:
This circuit breaker can safely divide and match both rated current and fault current, ensuring protection and stability in power distribution systems.
    4.    Capacitor Group Switching and Line Conversion:
The LW38-40.5 can efficiently manage the switching of capacitor groups and perform line conversions, making it versatile for a wide range of electrical applications.
    5.    Standards Compliance:
This circuit breaker complies with key international and national standards, including:
    •    GB 1984-2014: High Voltage AC Circuit Breaker
    •    DL/T 402-2016: High Voltage AC Circuit Breaker
    •    JB/T 9694-2008: High Voltage AC Sulfur Hexafluoride Circuit Breaker
This ensures that the product meets stringent safety, performance, and reliability standards.

Applications:

    •    Power Distribution Systems: Ideal for use in outdoor high-voltage power distribution systems with a rated voltage of 40.5kV.
    •    Frequent Switching Operations: Its design makes it particularly suitable for applications that require frequent switching, such as contact breaker functions.
    •    Capacitor Banks and Line Conversions: Capable of managing the switching of capacitor groups and converting lines in power grids.

Advantages:

    •    High Insulation and Safety: The use of SF6 gas ensures superior insulation and arc extinguishing, enhancing both the safety and performance of the breaker.
    •    Durable Outdoor Design: The porcelain column structure provides long-lasting reliability in outdoor environments, offering resistance to environmental degradation.
    •    Compliance with Global Standards: Adhering to key technical standards guarantees consistent quality and reliability across various operational conditions.

Precautions:

    1.    SF6 Gas Handling: Proper precautions must be taken when handling SF6 gas during installation and maintenance, as it is a potent greenhouse gas.
    2.    Installation and Maintenance: Only qualified professionals should handle the installation and maintenance of this high-voltage equipment to ensure proper functioning and safety.
    3.    Environmental Conditions: The breaker should be regularly inspected to ensure it operates optimally in outdoor conditions, especially in areas prone to harsh weather.

The LW38-40.5 Outdoor AC High Voltage Sulfur Hexafluoride Circuit Breaker offers a reliable, safe, and efficient solution for high-voltage power distribution, providing robust performance in challenging outdoor environments.

Environmental Conditions

1,Altitude: no more than 1000m, if the altitude is higher than 1000m,the rated insulation level should be corrected accordingly;
2,Ambient temperature: upper limit +45ºC, lower limit -40ºC,maximum daily temperature difference of 25K;
3,Humidity: average daily relative humidity ≤95%,average monthly relativehumidity ≤90%;
4,Solar radiation intensity:≥0.1W/cm2;
5,Wind speed: 34m/s;
6,Wind pressure: 700Pa;
7,Pollution level: e level;
8,Ice thickness:≤10mm;
9, Tolerance to earthquake: horizontal acceleration 0.3g. vertical acceleration 0.2g.

 

Technical Specification
Rated frequency		Hz	50
Rated voltage		kV	40.5
Rated current		A	1250  1600  2000
Rated short-circuit breaking current		kA	31.5
Rated short circuit closing current		kA	80
Rated short-time withstand current		kA	31.5
Rated peak withstand current		kA	80
Rated out-of-step breaking current		kA	10
Rated short circuit duration		S	4
Rated short-circuit breaking current breaking times		Times	10
Rated short-time power frequency withstand voltage	Interphase and ground (dry test)	kV/min	95/1
	Fracture(dry test)	kV/min	118/1
	Phase to ground (wet test)	kV/min	80/1
	Auxiliary circuit to ground	kV/min	2/1
Rated lightning impulse withstand voltage	Phase to ground	kV	185
	Fracture	kV	215
Rated operating voltage and auxiliary circuit rated voltage		V	AC220 DC220
Main loop resistance	Rated current 1600A and below	μΩ	≤90
	Rated current greater than 1600A	ms	≤40
Closing time	Under AC voltage	ms	≤100
	Under DC voltage	ms	55~100
Opening time	Under AC voltage	ms	≤60
	Under DC voltage	ms	30~65