Can the general-purpose relay replace the coil?

Update:12-09-2020
Summary:

Can a general-purpose relay replace the coil? A general […]

Can a general-purpose relay replace the coil? A general-purpose relay refers to a relay that can be used in a certain field or many fields. The relay is an electrical appliance that causes the controlled quantity to undergo a predetermined step change in the electrical output circuit when the input quantity (excitation quantity) changes to the specified requirements. According to the principle, it is judged that the general-purpose relay can be replaced with different types of coils, thereby making it into various relays. The relay is composed of multiple high-quality sealed small relays with lower coil voltage, which is moisture-proof, dust-proof, uninterrupted, and high reliability.

Other relay coil characteristics

Voltage relay: The relay whose contact action is related to the action voltage of the coil is called voltage relay. It is used for voltage protection and control of the electric drive system. When in use, the coil of the voltage relay is connected in parallel with the load.

Features: The coil has many turns and the wire diameter is small.

Classification: According to the type of coil current, it can be divided into AC and DC voltage relays. According to the pull-in voltage, it can be divided into overvoltage, undervoltage and zero voltage relays.

 

Current relay: The relay whose contact action is related to the action current of the coil is called current relay. When in use, the coil of the current relay is connected in series with the load.

Features: The number of turns of the coil is small and thick.

Classification: According to the type of coil current, it can be divided into AC and DC current relays. According to the pull-in current, it can be divided into overcurrent and low current relays.