What Makes Our Tulip Contact Technology Different?
The tulip contact functions as the moving contact in primary equipment such as high-voltage vacuum circuit breakers. It is designed to conduct and carry electrical current. Its primary role is to provide an elastic and self-adaptive pressure contact, reducing contact wear, ensuring stable current transmission, enabling rapid closing during switching operations to minimize arcing time, and thereby enhancing the safety and service life of the equipment.
Provide Constant Contact Pressure
Each "finger" of the tulip contact acts as an elastic element, often supplemented by one or more external stainless steel springs. When a conductor (e.g., the moving contact rod of a circuit breaker) is inserted, the fingers expand and the springs compress, generating a continuous and strong radial clamping force.
This pressure ensures tight contact between the fingers and the conductor surface, minimizing contact resistance. Lower contact resistance results in reduced heat generation during operation, decreased energy loss, and improved operational safety.
Reduce Resistance and Heat Generation: Parallel connection of multiple points significantly increases the effective conductive area.
Enhance Reliability: Even if some contact points are compromised due to minor oxidation or contamination, others continue to ensure uninterrupted current flow, preventing system failure.
Enable Plug-and-Play Connection (Facilitating Maintenance and Isolation)
Thanks to its elastic structure, the conductor can be easily inserted and withdrawn. This is one of its most distinctive features. In withdrawable switchgear, it allows the circuit breaker trolley to operate in the following positions:
1.Service Position: Fully inserted, contacts engaged, circuit connected.
2.Test Position: Partially withdrawn, primary electrical connection disconnected, while secondary control circuits remain active for opening/closing tests.
3.Disconnect/Withdrawn Position: Fully withdrawn, creating a visible and safe air-insulated break for secure maintenance or replacement of the circuit breaker.
Optimize Heat Dissipation
The open structure and the use of highly conductive materials (such as silver-plated copper) facilitate airflow and heat dissipation.
Effective thermal management prevents oxidation and aging of the contact points due to prolonged operational heating, maintaining stable contact resistance.