1. The influence of the environment on the reliability of the relay: The average time between failures of the relay working in GB and SF is the highest, reaching 820000h, while in the NU environment, it is only 60000h. 2. The influence of quality level on the reliability of relays: When the relay ... read more
There are many types of relays. According to the input quantity, they can be divided into voltage relays, current relays, time relays, speed relays, pressure relays, etc. According to the working principle, they can be divided into electromagnetic relays, inductive relays, electric relays, electroni... read more
①Measure contact resistance: use the electrical barrier of a multimeter to measure the resistance of the normally closed contact and the moving point. The resistance value should be 0; and the resistance value of the normally open contact and the moving point is infinite. From this, it can be distin... read more
①Rated working voltage: refers to the voltage required by the coil when the relay is working normally. Depending on the type of relay, it can be AC voltage or DC voltage. ② DC resistance: refers to the DC resistance of the coil in the relay, which can be measured with a multimeter. Miniature R... read more
1. According to the working principle or structural characteristics of the relay: 1) Electromagnetic relay: an electrical relay that uses the suction force generated between the electromagnet core and the armature by the current in the input circuit to work.2) Solid state relay: refers to a relay wh... read more
Relay is an automatic switching element with isolation function, which is widely used in remote control, telemetry, communication, automatic control, mechatronics and power electronic equipment, and is one of the most important control elements. Electricity Meter Components Relays generally hav... read more
A relay is an electrical control device. It is an electrical appliance that causes the controlled quantity to undergo a predetermined step change in the electrical output circuit when the change in the input quantity (excitation quantity) meets the specified requirements. It has an interactive relat... read more
How to choose a relay:1. First understand the necessary conditions ①The power supply voltage of the control circuit, the maximum current that can be provided; ②Voltage and current in the controlled circuit; ③How many sets and types of contacts are needed for the controlled circuit. When selecti... read more
Relay test ①Measure contact resistance: Use the electrical barrier of a multimeter to measure the resistance of the normally closed contact and the moving point. The resistance value should be 0; and the resistance value of the normally open contact and the moving point is infinite. From this, it c... read more
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