what is High Voltage Outdoor Open Type Combination Electrical Appliances?

what is High Voltage Outdoor Open Type Combination Electrical Appliances?

Open-type combination electrical appliances are complete sets of combination electrical appliances that use air as the external insulation and SF6 gas as the arc extinguishing medium. Control and protection of 40.5kV transmission and distribution systems for three-phase AC, as well as for connecting circuit breakers and opening/closing capacitor banks. Suitable for urban substations, enterprise substations, and mountainous substations with limited land use. High-voltage outdoor open-type combination electrical appliances are not just essential components in electrical power systems; they are the backbone of safety and reliability. Designed to operate in outdoor environments, where they bravely face harsh weather conditions and other environmental factors, these appliances play a crucial role in the distribution and transmission of electrical power. They ensure the efficient and secure operation of power networks, a responsibility that underscores their importance in the industry.

Definition

High-voltage outdoor open-type combination electrical appliances are a type of electrical equipment used in high-voltage power systems. They are designed to house and protect various components, such as circuit breakers, disconnectors, and other necessary devices within a single enclosure. These appliances are typically installed in outdoor substations and switchyards to facilitate the distribution and transmission of electrical power.

Working Principle

The working principle of high-voltage outdoor open-type combination electrical appliances is based on the integration of different electrical components within a single enclosure. These components, such as circuit breakers, disconnectors, and other necessary devices, work together to control, protect, and isolate the electrical power system when necessary. For example, the circuit breaker is responsible for interrupting the current flow in case of a fault, while the disconnector is used for isolating the equipment for maintenance. The appliances are designed to withstand high voltage levels and provide reliable operation under varying load conditions.

Working Conditions

High-voltage outdoor open-type combination electrical appliances are designed to operate in outdoor environments where they are exposed to extreme weather conditions, such as rain, snow, and high winds. These conditions can [specific impact on the appliance's performance]. The appliances are also designed to withstand temperature variations and other environmental factors, ensuring continuous and reliable operation in challenging conditions.

This product is an outdoor product and can also be used indoors. The environmental conditions for use are as follows:

a. Altitude: not exceeding 2000 meters.

b. Environmental temperature: -30 ℃ -+40 ℃ (special requirement -40 ℃ -+40 ℃).

c. Relative humidity: Daily average not exceeding 95%, monthly average not exceeding 90% (25 ℃).

d. Wind speed: not exceeding 35 meters per second.

e. Pollution level IV, ceramic sleeve with a creepage distance greater than 1450mm (nominal creepage distance greater than 31mm/kV).

f. No flammable, explosive, chemical corrosion, or severe vibration situations.

g. Earthquake intensity: not exceeding 8 degrees.

h. The ice thickness should not exceed 10mm.

Product Features

• This product has the following characteristics:
• Robust construction to withstand outdoor environments
• High voltage insulation for safe operationIntegrated design for compact and space-saving installation
• Reliable performance under varying load conditionsEasy access for maintenance and servicing
• Corrosion-resistant materials for long-term durability

1) Organically combine circuit breakers, isolating switches, grounding switches, current transformers, SF6 voltage transformers, lightning arresters, busbars, and other components on a grounded steel structure support, resulting in a compact structure.

2) It occupies only 30% -50% of the space of the split type and has significant characteristics such as saving land and reducing project costs.

3) The entire interval factory is prefabricated and assembled, and all debugging is completed before leaving the factory and transported as a whole to the installation site, greatly reducing the installation cycle.

4) Adopting a new generation of high-performance arc extinguishing chambers, SF6 voltage transformers, and composite insulator lightning arresters with minimal maintenance and high reliability

5) The self-supporting busbar prefabricated in the partition factory does not require steel frames and insulators.

6) Flexible layout, suitable for various wiring methods.

Technical Parameters

Rated voltage: Up to 245 kV

Rated current: Up to 4000 A

Short-circuit breaking current: Up to 50 kA

Insulation level: Up to 650 kV

Degree of protection: IP55 or higher

Ambient temperature: -40°C to 50°C

Components

High-voltage outdoor open-type combination electrical appliances typically include the following components:

• Circuit breakers
• Disconnectors
• Current transformers
• Voltage transformers
• Surge arresters
• Control and protection devices
• Busbars and connections

Internal Structure

The internal structure of high-voltage outdoor open-type combination electrical appliances is designed to accommodate the various components compactly and efficiently. The enclosure is typically made of robust and weather-resistant materials, providing adequate protection for the internal components. The layout is optimized for easy access and maintenance, with clear segregation of high-voltage and low-voltage compartments.

Application Range

High-voltage outdoor open-type combination electrical appliances are widely used in outdoor substations, switchyards, and power distribution systems. These appliances are essential for the reliable and safe operation of high-voltage power networks, providing protection, control, and isolation functions as required.

Installation

The installation of high-voltage outdoor open-type combination electrical appliances is not a task to be taken lightly. It requires meticulous planning and strict adherence to safety standards. These appliances should only be entrusted to qualified personnel who follow the manufacturer's guidelines and local regulations. The importance of proper foundation, grounding, and interconnection with other equipment cannot be overstated, as they are the pillars of safe and reliable operation. Your role in this process is crucial, and your attention to detail is paramount.

Conclusion

In conclusion,high-voltage outdoor open-type combination electrical appliances are critical components in high-voltage power systems, providing essential functions for the distribution and transmission of electrical power. Their robust construction, reliable performance, and ability to withstand harsh outdoor conditions make them indispensable for ensuring the efficient and secure operation of power networks. Proper selection, installation, and maintenance of these appliances are essential for the safety and reliability of electrical power systems.