Selection Skills Of High Voltage Relay

A high-voltage relay is an electrical appliance that causes the controlled quantity to undergo a predetermined step change in the electrical output circuit when the change in the input quantity (excitation quantity) of the high-voltage circuit meets the specified requirements.

1. First understand the necessary conditions

①Voltage and current in the controlled circuit;

②The power supply voltage of the control circuit, the maximum current that can be provided;

③How many sets and types of contacts are needed for the controlled circuit. When selecting a high-voltage relay, the power supply voltage of the general control circuit can be used as a basis for selection. The control circuit should be able to provide enough working current for the high-voltage relay, otherwise the relay will be unstable.

2. After consulting the relevant information to determine the conditions of use, you can search for the relevant information to find out the model and specification number of the required high-voltage relay. If you have a relay in hand, you can check whether it can be used based on the data. *After considering whether the size is appropriate.

3. Pay attention to the volume of the appliance. If it is used for general electrical appliances, in addition to the cabinet volume, small relays mainly consider the circuit board installation layout. For small electrical appliances, such as toys and remote control devices, ultra-small relay products should be used.