Relay News
A subminiature power relay is an electrical switch that is designed to control high power circuits in a compact and lightweight package. The subminiature designation refers to the relatively small size of the relay, which allows it to be used in applications where space is limited.
Everyone may have used electromagnetic appliances or other electromagnets in production practice. For comrades who often use these electrical components, they will definitely have such experience: when the voltage applied to the coil is constant, the farther the armature is from the core column, that is, the larger the air gap, the smaller the force it receives, The smaller the air gap, the greater the suction: if you want to increase the suction at a certain air gap, you must increase the voltage across the coil (if allowed).
Miniature Power Relay Model GN parameter information： Overall dimensions：29.0*12.7*15.7mm Relay weight:15g Contact form：1A,1B,1C,2A,2B,2C Contact load: 16A 250VAC/2*8A 250VAC Coil voltage： 5V DC,6V DC,9V DC,12V DC,18V DC,24V DC,48V DC,60V DC Coil resistance (Ω± 10%):0.25W,0.4W between contact coils voltage: 5000VAC Between disconnecting contacts voltage: 1000VAC/2500VAC
Product features of 9V DC miniature power relay model 914F 1，20A contact switching capacity，Double group 2*8a contact switching capacity 2，It has the contact form of one set of normally open, one set of conversion, two sets of normally open and two sets of conversion 3，UL insulation class: Class F 4，Applicable to Household appliances, massage chairs, sports appliances, access control system
In the power control relay the return spring and the contact spring are made of circular or sheet-like elastic materials (such as spring steel wire, tin bronze, phosphor bronze, brass, German silver, silver magnesium nickel, etc.). When it is mechanically deformed, it has a certain elasticity. We all have this feeling in practice, the greater the deformation of these springs, the greater the elastic force it produces: the smaller the deformation, the smaller the elastic force; no deformation, that is, the spring is in a free state, and no elastic force is generated. Further experiments and theoretical analysis show that: within a certain range, the size of the elastic force (F) is proportional to the size of the deformation (X). Mathematically expressed as: F=CX
Order description of 6V DC miniature power relay model 914F 1) When it is used in a polluted environment (including H2S, SO2, NO2, and other dust pollutants), it is recommended to select plastic products and verify them in actual use; 2) After the relay is installed into the PCB board, the whole board needs to be cleaned. Contact our company in time to confirm the appropriate welding method and product specification; 3) For the application scenarios where capacitive load, lamp load and motor load lamps will produce high surge current at the moment of relay connection, it is recommended to use AgSnO2 material contacts; 4) If customers have any special requirements, they can contact our company to select the corresponding product model according to the characteristics after review
We know that in a power control relay with contacts, the main task of the contacts is to "open" and "close" the circuit, so there are only two forms of movement: "divide" and "close". This "opening and closing" movement of the contact system is mainly based on the combined action of the force generated by the return spring (or reed) and the mechanical force transformed by the external input signal (this is the force in two opposite directions). Completed. That is to say, only when the input signal is small enough that the mechanical force converted by it is smaller than the force of the return spring,
Product features of 48V DC miniature power relay model 914F 1，20A contact switching capacity，Double group 2*8a contact switching capacity 2，It has the contact form of one set of normally open, one set of conversion, two sets of normally open and two sets of conversion 3，UL insulation class: Class F 4，Applicable to Household appliances, massage chairs, sports appliances, access control system
Above, we start from the different working states of the power relay contacts, and focus on analyzing its contradictory essence in each working stage. However, the power relay contact itself is a whole, and the tasks specified in each stage are completed by the same power relay contact. Moreover, the characteristics of the different stages of work in the same whole are interconnected, influenced and contradicted each other. For example, the welding that may occur when the power relay contacts are working in the closed state will cause it to fail to achieve the disconnection process, so it is not possible to break the circuit; and the arc or spark that occurs when the power relay contacts open and close the circuit. The destructive effect will cause it to fail to conduct the circuit normally and reliably in the closed state.
In addition to ensuring reliable arc extinguishing, the distance between the dc power relay contacts when the dc power relay is disconnected should also be able to withstand sufficient circuit voltage without being broken down, that is, the dc power relay contacts must have sufficient dielectric strength, which is necessary for the dc power relay contacts to be disconnected.