There are no physical moving parts involved in the design of solid state relay. They are reliable. SSR’s are limited to a single set, since they are designed to simply activate a single load device, never for control logic sequences. Today Beijing Hemanton Electromechanical Equipment Co., Ltd. will share with you the advantages of solid state relays: 1 Solid state relays have no mechanical parts. This can be done with very little power or energy, but the relay could switch hundreds of volts with tens of amps flowing. When this operating current increases, coil energizes the electromagnet. However, static overcurrent relays offer several advantages over the electromagnetic form:. Static Relays Electromagnetic Relays; Power consumption: Very less 1 milliwatt: High 2 watt: Moving contacts: No moving contacts. Hence there is no mechanical noise. In most cases, each set of contacts in a mechanical relay contains both a Normally Open and Closed contact. In many cases relays were replaced by semiconductors, but at the same time completely new applications appeared as electronics progresse… Mechanical relays, unlike their solid-state counterparts, can contain multiple contact sets, as many as four or even more in a few cases. The crucial advantages of using overload protection relay are: Simple operation; Application corresponding mountain kits will be in accessibility for multiple kinds of overload protection relays; Exact synchronization with contractors; Reliable protection; Static Relays. The relay is one of the most common components to be found within any industrial control cabinet. They are simple in construction. When the operating current becomes large, the magnetic field produced by electromagnet is high such that this magnetic field pulls the armature or plunger making the trip circuit contacts to close. What Are the Advantages of Using General Purpose Relays? But there are a few key advantages that might tip the scales in favor of the choice of solid-state for control of a load device. The advantage is that one coil consumes power only for an instant while the relay is being switched, and … A latching relay, also called impulse, bistable, keep, or stay relay, or simply latch, maintains either contact position indefinitely without power applied to the coil. Rather there was a trend to optimally unite the advantages of what seemed to be competing components, relays and semiconductors, in the circuit in which they were used. They also provide relay, timer, and counter functions in a single unit. Another side benefit of these multiple contacts is that load devices with different operating voltages can be controlled with the same relay. The chances of noise pollution are almost negligible due to the absence of direct contact with moving parts. A fourth major advantage that mechanical relays hold is the ability to, in some cases, test them easily while still in the circuit. Advantages of Numerical Relays: Numerical relay consists of many functions in one relay thus replace many traditional relays with one. SSRs offer faster switching time than EMR. Therefore coils limit their own current but they also exhibit properties of any inductor. The output contacts, since they are simple switches, are tolerant of either DC or AC voltage, however, every relay will have a maximum voltage and current allowance. For example, if you wanted to add a timer to make a motor turn on after five seconds, you would just add it to the program and set it to five seconds in the PLC. A basic solid-state overload relay protects a motor by opening a … Solid-state relay (SOLIDSTATERELAYS, hereinafter abbrev […]. The coil voltage may be low voltage DC such as 5, 12, or 24 volts, or it may require voltages of AC, either 24 volts or up to 120 or 230 volts. Due to the inherent characteristics of the components that make up the solid state relay, the solid state relay determines the solid state relay. The solid state device completes the contact function. Advantages of Mechanical Relays. One relay can be used in many ways. The relays’ small profile and side-by-side DIN-rail mounting simplifies installation and wiring. Control signals are typically in the range of 3 – 32 volts DC. It is not necessary to be near the device to make it work. Applications in home appliances such as air conditioners often use power relays. Benefits or advantages of Solid State Relay. CONTENTS 1.INTRODUCTION 2.PRINCIPLE 3.OPERATION 4.TYPES AND THEIR EXPLANATION 5.ADVANTAGES 6.DISADVANTAGES 7.APPLICATIONS 3. The static relay gives the quick response, long life, high reliability and accuracy and it shockproof... 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