High Voltage Wall Bushings 6kV-220kV - Quality Products from China Suppliers and Factory
Our Main Products
The main products produced by the company include:
- 12kV ~ 252kV rubber impregnated fiber capacitive wall bushing
- 12kV ~ 252kV capacitive composite wall bushing
- 12kV ~ 252kV capacitive porcelain wall bushing
- 40.5kV ~ 252kV dry-type high-voltage wall bushing with current transformer
- 35kV ~ 126kV dry type high voltage current transformer
- 10kV ~ 35kV integrated capacitive coupler
Our company has strong technical force, advanced technology, perfect management system, complete quality inspection equipment, and strong product R & D and production capacity. Adhering to the business philosophy of "market-oriented, quality as life, management as fundamental, science and technology first, people-oriented", the company advocates an enterprise culture of integrity, innovation, efficiency and harmony, serves the society with high-quality products and reasonable prices, and meets the different needs of customers. The company's business scope is distributed in all levels of power grids and major energy projects in China, and provides high-quality silicone rubber composite insulation supporting products for internationally famous electrical equipment manufacturers.
Product Introduction
Fcrgj glue impregnated fiber capacitive wall bushing gradually reduces the high voltage through the capacitive voltage dividing principle. In normal operation, the end screen lead is equal to the flange and grounded through the flange. So that the high-voltage lead can pass through the wall or floor safely and play the role of insulation and supporting the diversion.
Bushing Structure Components
It is composed of primary winding, outer sheath, silicone rubber umbrella skirt, pressure equalizing cover at both ends, flange and conductive wire clamp.
Wall Bushing Model Designation
Rubber impregnated fiber capacitive wall bushing with rated voltage of 24kV and rated current of 3150A.
Glue impregnated fiber capacitive wall bushing with rated voltage of 252kV and rated current of 2500A.
Use Conditions
1. Ambient Air Conditions
Ambient air temperature: maximum 55 ℃, minimum - 60 ℃.
2. Creepage Specific Distance
The selection of creepage specific distance shall comply with the provisions of GB / T 5582. Creepage specific distance is divided into 4 levels:
| Class Level | Creepage Specific Distance |
|---|---|
| Class I | 16mm / kV |
| Class II | 20mm / kV |
| Class III | 25mm / kV |
| Grade IV | 31 mm / kV (Default when the user has no requirements) |
Note: The allowable negative error of the actual creepage distance of the bushing is 0.04l + 1.5mm (L: minimum nominal creepage distance).
Main Technical Parameters of the Product
- Table 1 gives the rated voltage, system working voltage, rated current, insulation level and other parameters of fcrgj type wall bushing.
- Under the voltage of 1.05ur / √ 3 and ur, the dielectric loss factor TG δ ≤0.4%.
- Local discharge capacity: ≤ 5pc under rated voltage of 1.05ur / √ 3.
- Temperature rise ≤ 60K, long-time operation at rated current inom.
- Heat resistant current: ith = 25inom, 3C.
- Other technical conditions shall conform to the standards IEC 60137-2017 and GB / T 4109-2008 insulating bushings with AC voltage higher than 1000V.
Transportation and Hoisting
Product Transportation Requirements
- The products can be transported by train, ship, automobile, airplane and other means of transportation. The train compartment, ship compartment and automobile compartment carrying the products should be kept clean and free of pollutants.
- The loading of products shall meet the requirements in the transportation regulations, and the products shall be firmly placed. No shaking, collision and movement are allowed during transportation.
- During product transportation, the inclination shall not be greater than 30 °.
- After the products are transferred at the station wharf or unloaded at the terminal, the stacking shall not exceed three layers, and other articles are not allowed to be stacked with them.
Frequently Asked Questions (FAQ)
What is the working principle of the Fcrgj glue impregnated fiber capacitive wall bushing?
It gradually reduces the high voltage through the capacitive voltage dividing principle. During normal operation, the end screen lead is equal to the flange and grounded through the flange, allowing the high-voltage lead to safely pass through walls or floors for insulation and support.
What are the main components of the wall bushing?
It is composed of a primary winding, outer sheath, silicone rubber umbrella skirt, pressure equalizing cover at both ends, a flange, and a conductive wire clamp.
What do the numbers in the model name "fcrgj-252 / 2500" represent?
The number "252" represents a rated voltage of 252kV, and "2500" represents a rated current of 2500A for the glue impregnated fiber capacitive wall bushing.
What are the ambient temperature limitations for installing these bushings?
The ambient air temperature conditions must be within a maximum of 55 ℃ and a minimum of -60 ℃.
What standard creepage specific distance is used if not specified?
When the user has no specific requirements, the default creepage specific distance is Grade IV, which is 31 mm / kV.
What are the transportation rules regarding product inclination and stacking?
During transportation, the inclination of the products must not be greater than 30 °. Once unloaded or transferred, the stacking of the products must not exceed three layers.
HEADING-TYPE-1
High voltage parallel capacitors are suitable for parallel connection in AC power systems with power frequency (50Hz or 60Hz) of 1kV and above. They are used to compensate for inductive reactive power, improve power factor, improve voltage quality, reduce line losses, and fully utilize the efficiency of power generation and supply equipment.
description2
HEADING-TYPE-1
High voltage parallel capacitors are suitable for parallel connection in AC power systems with power frequency (50Hz or 60Hz) of 1kV and above. They are used to compensate for inductive reactive power, improve power factor, improve voltage quality, reduce line losses, and fully utilize the efficiency of power generation and supply equipment.
description2