Busbar
A metallic strip conducting electricity within switchgear, transformers, and distribution equipment.
A busbar is a metallic conductor (copper or aluminum) serving as junction for multiple circuits within transformers, switchgear, and distribution equipment.
In transformer applications, busbars connect winding terminals to external circuits. Cross-sectional area determined by current rating with standard densities of 2-4 A/mm2 for copper.
In three-phase systems, busbars minimize electromagnetic forces during short-circuit and reduce eddy current losses.
QDTB designs optimized busbar systems using high-conductivity materials. Our low voltage switchgear features optimized busbar designs.
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Related Terms
Bushing
An insulated device allowing a conductor to pass through a grounded barrier while maintaining insulation integrity.
Impedance (%Z)
Total opposition to current flow in a transformer as a percentage, determining fault current and voltage regulation.
Current Transformer
An instrument transformer producing secondary current proportional to primary current, for measurement and protection.
More Terms Starting with “B”
BIL (Basic Impulse Level)
The ability of transformer insulation to withstand high-voltage surges from lightning or switching, measured in kV peak.
Buchholz Relay
A gas-actuated protective relay between transformer tank and conservator detecting internal faults by sensing gas accumulation.
Bushing
An insulated device allowing a conductor to pass through a grounded barrier while maintaining insulation integrity.
Box-Type Substation (Prefabricated)
A factory-assembled compact substation integrating transformer, HV/LV switchgear, and protection in a weatherproof enclosure.
More in “Components & Accessories”
Bushing
An insulated device allowing a conductor to pass through a grounded barrier while maintaining insulation integrity.
HV/LV Bushing
High-voltage and low-voltage insulated conduits for transformer winding connections through the grounded tank.
Load Tap Changer (LTC)
A mechanism allowing transformer tap ratio changes while energized and under load for real-time voltage regulation.
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