Intermediate relays are used in various relay protection and automated control systems, which also transmit signals and better control circuits. Let's get to the middle relay today
Intermediate relays
Intermediate relay structures: stationary steel cores, kinetic steel cores, springs, kinetic contacts, static points, wires, wire terminals, casings。
Speaking of intermediate relays, it's easy to think of communication contacts. Because they have the same structural principles, the difference is that the communicators have primary contact points that can be used more frequently through large currents, while the intermediate relays do not have primary contact points, but rather some auxiliary contact points, which can only be used through small currents, more direct currents, and only to control electrical circuits。
Multiple auxiliary contacts in intermediate relays allow signal transmission or control of parts of the circuit. It is primarily protective throughout the circuit system. In some cases, we need to control certain inputs (e. G. Voltage, currents, temperature) within a certain range, and when the equivalent input reaches the set target, relays are activated, providing control protection and changing the current working state of the circuit。
The types of intermediate relays are the jz7 series and the jz8 series。
Intermediate electrical works: when wires are installed, the kinetic core is adsorbed, and the action of the kinetic contact point separates the constant contact point, which is often closed at this time; the power outage returns to its original state。
Intermediate relay wiring techniques
There will be some differences between relays. The following is a description of the wiring methods of the eight terminals。
5 and 6 are a set of public ends, 1 and 2 are a set of constant contact points and 3 and 4 are a set of frequent contact points. When 7 or 8 is out of power, 5-6 and 1-2 are connected, the power is disconnected from 1-2, while 5-6 is constantly connected to 3-4。
The average intermediate relay is a double-slash switch, 7-8 end-end internal coil, used and combined with a continuous diode, the polarity and relay endpoint of the diode connection is indicated to be the opposite (8+ negative end of the secondary tube, 7-7 positive of the secondary tube) and when it reaches its intended value, the relay will work-driven circuits, which will be broken in the instant due to high self-insension voltage, which will flow through the secondary tube and will not pass through the electrical circuit, thus protecting the components of the circuit。
Selection of intermediate relays
1. Consider head-to-head capacity: i. E. Maximum allowable voltage (grade voltage), current
2. Selection of the number, type of tentacles according to demand
3. The level of voltage in the electromagnetic loop and the power pressure in the control circuit are equal
4. Frequency of operation of relays
5. Wage systems for relay systems
6. The use of objective environmental, climatic and other factors
These are the introductions to intermediate relays that i hope will help you with。
