How to set up the electronic overcurrent relay? Introduction to the working principle of electronic overcurrent relay

Electronic overcurrent relays are electronic devices that are often used in lifting, milling or agitation, and they have many features. Including electronic over-current protection, the safety factor of the product is relatively high, consumers do not have to worry about extra loss and trouble when using the operation. In addition, the electronic over-current relay on the market can be further based on the size. The scale is different and detailed and detailed. Consumers can learn as described below. Xiaobian's working principle and parameter setting skills for everyone to explain can help to understand.

First, how to set the electronic overcurrent relay parameters?

When the overcurrent relay detects that the current is greater than the set value of the overcurrent, the overcurrent output relay acts immediately.

1. The pull-in value of the overcurrent is less than or equal to the rated current of the transformer on the primary side.

2. The pull-in value of the overcurrent is greater than or equal to the release value of the overcurrent.

3. The release value of overcurrent is greater than the absorption value of undercurrent.

The overcurrent relay is divided into induction electromagnetic type and integrated circuit type, with the characteristics of time limit and inverse time limit, and is applied to the main equipment of the motor, the transformer and the relay protection circuit of the transmission and distribution system. When the main equipment or the transmission and distribution system is overloaded and short-circuited, the relay can reliably operate or signal according to the predetermined time limit, and the faulty part is removed to ensure the safety of the main equipment and the transmission and distribution system.

Second, the working principle of overcurrent relay

The working principle of the electromagnetic overcurrent relay is compound, consisting of two components: an inductive and an electromagnetic one that share a coil. When the coil of the relay is connected with an alternating current, two magnetic fluxes having a certain phase difference are generated in the shielded and unshielded portions of the core. This flux interacts with the eddy currents induced in the disk to create a torque on the disk.

Since the overcurrent relay is applied to important mechanical equipment such as motors and transformers, when the main equipment is overloaded and short-circuited, the overcurrent relay can reliably operate or signal according to the predetermined time limit, thereby ensuring the main equipment. And the safety of transmission and distribution systems.

The above is an example of the basic content of the working principle of the electronic overcurrent relay and the parameters and steps in the parameter setting. It can be known that as a widely used electronic device, it can be used not only in many Play a key role in the field, and its installation is more convenient, the timing protection function allows the product to avoid unsafe conditions to a certain extent, in addition to other fans and other products can also help you achieve Satisfactory results, more valuable, the price selection of similar products on the market is so rich, I believe that consumers can achieve the same ideal advantages as expected.

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