Products Description
In photovoltaic power generation systems, AC-side relays play a crucial role in circuit connection, disconnection, and protection control. The Static Silver Contact AC Side Photovoltaic PV Relay employs a composite silver contact structure, where silver contacts are firmly bonded to a copper-based stamped part via riveting, and complemented by a stainless steel spring structure, achieving a comprehensive balance between conductivity, mechanical elasticity, and long-term reliability.
Technical Features and Design Advantages
Progressive Die Stamping Technology
Our Fixed Silver Contact for Solar Power Relay utilize advanced multi-station progressive die stamping technology, completing multiple processes in a single stamping stroke, including punching, bending, and forming. This process not only improves production efficiency (up to 200-300 times per minute) but also ensures dimensional accuracy within ±0.01mm, meeting high-precision requirements.
Precision Riveting Process
The connection between the silver contacts and the copper substrate employs a precision riveting process, ensuring a tight bond and a robust electrical connection. During the riveting process, we strictly control pressure and temperature to prevent material annealing or deformation due to overheating, thus guaranteeing the long-term reliability of the Contact Brazing for PV Energy Storage DC Contactor.
Optimized Surface Treatment
To further enhance contact performance, we electroplat the silver contact surface to strengthen its oxidation resistance and wear resistance. These surface treatments not only effectively prevent silver oxidation but also improve Moving Contact for New Energy Relay stability and extend service life.
Frequently Asked Questions
Why do Bimetal Rivet for PV Inverter Relay use silver contacts?
The AC side of a photovoltaic inverter needs to cut off large currents in a very short time. The low contact resistance of silver contacts can effectively reduce voltage drop and power loss, improving system efficiency.
Will silver contacts oxidize?
In the dry environment of the photovoltaic grid, the oxide layer on the surface of the silver contacts is extremely thin (usually only a few nanometers), and its impact on conductivity is negligible. Furthermore, this product has undergone surface protection treatment.
What voltage level is this Contact Brazing for PV Energy Storage DC Contactor suitable for?
This contact is specifically designed for the AC side of photovoltaic inverters. The rated voltage is usually 380V or 400V AC. Specific models can be selected according to actual needs.
Is there any special treatment for the stainless steel spring?
The surface of the spring is usually sandblasted or laser-treated to increase surface roughness, ensuring a moderate coefficient of friction between the contact and the spring, guaranteeing elastic recovery force without easily getting stuck.
Quality Control and Certification
Dimensional Inspection
Micron-level dimensional verification is performed using a coordinate measuring machine (CMM).
Electrical Performance Testing
Each batch of Moving Contact for New Energy Relay must pass contact resistance, withstand voltage, and current carrying capacity tests.
Aging Testing
Alternating high and low temperature tests and humidity salt spray tests ensure long-term stable operation for Bimetal Rivet for PV Inverter Relay.
Certification System
ISO 9001 quality management system certified; some Fixed Silver Contact for Solar Power Relay comply with IEC 60947-5-1 standard.
contact us
If you are developing a Static Silver Contact AC Side Photovoltaic PV Relay or optimizing an existing contact structure, please submit your drawings and technical requirements. We will provide support in structural and process evaluation.
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