Power Station type high voltage wall bushing is suitable for use in power stations, substations and electrical equipment of 35kV and below, for the conductor (busbar) to pass through the grounding partition, walls and closed distribution institutions as insulation support and external conductor (busbar).
The high-voltage wall bushings for power stations are divided into two series: indoor and outdoor, with copper conductor wall bushing, aluminium conductor wall bushing and busbar wall bushing without conductor.
Due to the large number of products, the products are listed separately for the convenience of users. The anti-pollution series is divided into two categories: creepage distance below 2.0 cm/kV and creepage distance above 2.5 cm/kV. Creepage distance of 2.5cm/kV and 3.1cm/kV are particularly recommended. Not only becasue their outdoor end is highly resistance to pollution, but the creepage distance of the indoor end also has been increased as much as possible to prevent flashover due to condensation etc.
The performance of high-voltage wall bushing conforms to the provisions of GB12944.1-91 Technical Conditions for High-Voltage Wall Bushing and GB12944.2 Dimensions and Characteristics of High-Voltage Wall Bushing.
|Rated Voltage kV||Power Frequency Withstand Voltage ≥kV||Lightning Impulse Withstand Voltage ≥kV|
|Dry/Wet Withstand||Break Through||Visible Corona|
C – indoor copper conductor wall bushing.
CL – Indoor – aluminium conductor wall bushing.
CWL – outdoor – indoor aluminium conductor wall bushing
CB – Indoor – round conductor ceramic wall bushing.
CWB – outdoor – indoor round conductor ceramic wall bushing ;
B – bending damage load rating, 7.5kN.
CLB – indoor aluminium conductor wall bushing (reinforced)
CWLB – outdoor – outdoor aluminium conductor wall bushing (reinforced)
CW – outdoor – indoor copper conductor wall bushing
CWWL – Outdoor – Indoor anti-pollution aluminium conductor wall bushing
CWW – Outdoor – Indoor anti-pollution copper conductor wall bushing
CM – Indoor busbar wall bushing
CMW – Outdoor busbar wall bushing
CMWW – outdoor – indoor anti-pollution copper conductor wall bushing
Example: Model CWWL-35/630-3
35kV, 630A current, outdoor and indoor anti-pollution aluminium conductor wall bushing , suitable for class 3 fouling area.
35kV, 630A, outdoor-indoor highland anti-pollution aluminium conductor wall bushing for class 1 foul areas.
Example: Model CWWB-35Q/630
35kV, 630A, large creepage distance copper conductor wall bushing
We will contact you within 1 working day, please pay attention to the email with the suffix “@wolunele.com”.