Overview of High Voltage Wall Bushing
High voltage wall bushings for power stations are suitable for use in power stations, substations and electrical equipment of 35kV and below, for conductors (busbars) to pass through earthing partitions, walls and enclosed distribution cabinets as insulation support and external conductors (busbars).
Classification of High Voltage Wall Bushing
- By application: Indoor Type/Outdoor Type
- By structure: wall bushing with copper conductor/wall bushing with aluminum conductor/ busbar wall bushing without conductor
- By creepage distance: Ordinary type/Anti-pollution Type( consists of 2.0cm/kV below creepage type and 2.5cm/kV above creepage)
Conformity Standards
Standard: IEC 60137 – 2017
Main Technical Parameters
| Rated Current A | 250 | 400 | 630 | 1000 | 1600 | 2000 | 3150 |
| 5s thermal short-time current≥Ka | 3.8 | 7.2 | 12 | 20 | 30 | 40 | 60 |
| Bending Breaking Load ≥kN | 4 | 4 | 8 | 8 | 8 | 12.5 | 12.5 |
Model Meaning:
C–indoor copper conductor wall bushing
CL–indoor aluminum conductor wall bushing
CWL–outdoor-indoor aluminum conductor wall bushing
CB–indoor round conductor rod porcelain wall bushing
CWB–outdoor-indoor round conductor rod porcelain wall bushing
B–anti-bending breaking load grade, 7.5kN
CLB–indoor aluminum conductor wall bushing(strengthend type)
CWLB–outdoor-outdoor aluminum conductor wall busing(strengthend type)
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 type wall bushing
CMWW — Outdoor – Indoor anti-pollution copper conductor wall bushing
Reference Photos of Wall Bushing
Wolun offers full series of porcelain and polymer type wall bushings from 10kV to 126kV. Feel free to contact us for prices.
