Ningbo Baocheng Electronics CO.,LTD

Relays and contactors are electromagnetic switching devices, but the former belong to switching devices working in the control circuit, while the latter belong to switching devices working in the main circuit. Definition of relay:  NB90 Relay  is an automatic electrical appliance. It is suitable for long-distance connection and disconnection of AC and DC small capacity control circuits, and is used for control, protection and signal conversion in electric drive systems. The input quantity of the control relay is usually electricity such as current and voltage, and it can also be non-electric quantity such as temperature, pressure, and speed. The output quantity is the electrical signal or parameter change of the output circuit when the contact operates. The characteristic of the relay is that when its input quantity changes to a certain program, the output quantity will change stepwise. Power Relay Let me tell you as a  Power Relay Manufacturer . 1. The effect is different:

There are four test methods for  Power Relay . There are many test methods for power relays in common relays. Relays are often used in various industries, such as: automotive, electrical, electronic products, etc. The role of the relay is to protect the circuit. , Limiting the current can achieve the closing effect, the following  Power Relay China Factory  will explain the test method for everyone. 1. Measuring contact resistance Use a universal meter resistance file to measure the resistance of normally closed contacts and moving points. The resistance value should be 0 (the contact resistance value can be measured within 100 milliohms in a more accurate manner); The resistance of a point is infinite. It can be distinguished that this is a normally closed contact and that is a normally open contact. 2. Measuring coil resistance The resistance value of the power relay coil can be measured with a universal meter R × 10Ω, so as to determine whether there is an open circuit in t

As a  Power Relay Supplier , share with you. The relay, which originated in the mid-to-late 1960s, was initiated by some scholars in Britain, Australia and the United States. In the mid-1960s, some people proposed the idea of using small computers to realize relay protection. However, because the computer was expensive at the time, and it could not meet the technical requirements of high-speed relay protection, it did not achieve practical applications in protection, but it began. A lot of research on the theoretical calculation method and program structure of computer relay protection has laid a theoretical foundation for the subsequent development of relay protection. Computer technology made major breakthroughs in the early and mid-1970s, and the rapid development of large-scale integrated circuit technology has brought microprocessors and microcomputers into a practical stage. The sharp drop in price and the substantial increase in reliability and computing speed have led to t

Relays are a kind of electrical appliances commonly used in the industry. We all know that relays are automatic control electrical appliances that operate according to specific input signals. There are many types of relays, including intermediate relays, thermal relays, and time relays. As a  Power Relay Supplier , share with you. KM Relay is usually used to transmit signals and control multiple circuits simultaneously. It can also be used to directly control small-capacity motors or other electrical actuators. The structure and working principle of the intermediate relay are basically the same as those of the AC contactor. The main difference with the AC contactor is that there are more contacts, and the contact capacity is small, and only small currents are allowed to pass. When selecting the intermediate relay, the voltage level and the number of contacts are mainly considered. 19F Relay FR thermal relay has a large metal expansion coefficient in the lower layer and a sma