The function of the relay is to control the relay coil with a switch, then the working contact of the relay is closed or disconnected, one end of the contact is connected with the current of the main line, and the other end is connected with the electric appliance to be controlled to realize a smal... read more
A power relay is a device that can be converted in one or more electrical output circuits when input (or excitation) meets certain specific conditions. It can be used in a neutral point direct grounding system as a directional component for zero sequence current protection. The action of the contac... read more
The action of the contact can be divided into two parts: contact closure and contact disconnection, that is, the pull-in and release process of the relay, which are cyclically switched at a certain frequency to form a contact opening and closing phenomenon. There are many special physical and chemi... read more
1. Electromagnetic relay: An electrical relay that works by the suction force generated between the electromagnet core and the armature in the input circuit.2. Solid state relay: A type of relay in which the electronic component performs its function without mechanical moving parts, and the input a... read more
The principle of magnetic holding relay (detailed magnetic drive relay drive circuit diagram and wiring method), there are many classifications of relays, but the principle of most relays is the same. Compared with ordinary electromagnetic relays, magnetic retention relays have the advantage of low... read more
Rated operating voltageIt refers to the voltage required by the coil when the relay is working normally, that is, the control voltage of the control circuit. Depending on the type of relay, it can be either an AC voltage or a DC voltage. 2. DC resistanceRefers to the DC resistance of the coil in th... read more
Time relay principle:Air-damped time relays are often used in AC circuits, which use the principle of air throttling through small holes to obtain delayed action. It consists of three parts: the electromagnetic system, the delay mechanism and the contacts.Wiring method for time relay:1. Control wir... read more
Dedicated solid state relays can have short-circuit protection, overload protection and over-temperature protection functions, and combined with logic-cured package to realize the intelligent modules required by users, directly used in the control system. Solid state relays have been widely used in... read more
Because solid state relays have no mechanical contacts and other mechanical parts, their reliability is very high. The solid-state relay does not generate electric sparks and has no noise at the moment of on and off. Its switching speed is quite fast and the operating frequency is also quite high. ... read more
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