Intermediate Relay Structure

- Oct 22, 2019-

Intermediate relay structure

1. The coil is mounted on a "U" shaped magnet. There is a movable armature on the magnet. The two sides of the magnet are equipped with two rows of contact springs. In the non-operating state, the contact springs lift up the armature to maintain a certain gap between the armature and the magnetizer. When the electromagnetic torque between the air gap exceeds the reaction torque, the armature is attracted to the magnet, and the armature presses the contact spring to close the normally open contact and close the normally open contact to complete the relay operation. When the electromagnetic torque is reduced to a certain value, the contact and the armature are returned to the initial position due to the reaction torque of the contact spring, ready for the next work.

2. The "U"-shaped magnet of this relay adopts a double core structure, that is, a coil can be installed on both side columns. For DZY, DZL and DZJ models, only one coil is installed, and for DZB, DZS, DZK type can be mounted on another core as needed to hold coils or delay damping sheets. Therefore, a relay having a different coil type has a common magnet.

3. The principle of the intermediate relay is the same as that of the AC contactor, which consists of a fixed iron core, a moving iron core, a spring, a moving contact, a static contact, a coil, a terminal and a casing.