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A: Our DC contactors cover a wide voltage range from 12V to 1500V DC. The 1500V series is specifically designed for PV energy storage and high-voltage boxes, complying with IEC 60947-4-1.
A: With an IP67 protection rating, it is fully dust-tight and waterproof, making it ideal for outdoor charging piles and offshore wind power energy storage applications.
Answer:
DC contactors primarily use two key mechanisms to extinguish arcs effectively:
1. Magnetic Blow-out Arc Extinguishing:
The contactor stretches the electric arc as much as possible within the limited space of the arc chamber. This makes it difficult for the DC arc to sustain itself, leading to its eventual break.
2. Protective Gas:
When an arc is generated, the protective gas inside the chamber is difficult to ionize. This property effectively enhances the dielectric strength of the space, helping to quench the arc.
A: When using the specified copper busbar, our product's temperature rise is kept within ≤65K. Upon request, we can provide corresponding test reports, including those under normal and high ambient temperatures. If specific current levels or copper busbars are required, we can conduct preliminary tests.
A: Our product has undergone electrical life tests for make and break operations at the rated current and voltage. The number of operations is documented in our reports, which we can organize and provide. Additionally, we have relevant certification reports. Furthermore, we can conduct preliminary tests based on customer requirements.