Relay
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Relay (English name: relay) is a kind of electrical control device, is when the input quantity (excitation quantity) changes to meet the specified requirements, in the electrical output circuit to make the controlled quantity of a predetermined step change of an electrical appliance. It has the interaction between the control system (also known as the input loop) and the controlled system (also known as the output loop). Usually used in automated control circuits, it is actually a kind" automatic switch". Therefore, it plays the role of automatic adjustment, safety protection and conversion circuit in the circuit.
Common test items for relay UL508 certification:
1. Temperature rise test;
2. Over-voltage and under-voltage test;
3. Overload test;
4. Durability test;
5. Dielectric withstand voltage test.
Information required for relay UL508 certification:
1.CDF (Key Parts List)
2. Schematic diagram
3.PCB Layout
4. Label/Nameplate
5. Transformer Specification, Inductance Specification
6. Model List/Difference Table
7. Instructions for use or installation of the product
