中間繼電器用于繼電保護(hù)與自動控制系統(tǒng)中，以增加觸點(diǎn)的數(shù)量及容量，還被用于在控制電路中傳遞中間信號。下面進(jìn)行中間繼電器的分類作用全解析。

Intermediate relays are used in relay protection and automatic control systems to increase the number and capacity of contacts. They are also used to transmit intermediate signals in control circuits. The following is a full analysis of the classification and function of intermediate relays.

中間繼電器分類

Intermediate relay classification

中間繼電器的延時方式主要有兩種，分別是通電延時和斷電延時，安裝方式主要分為固定式、凸出式、嵌入式、導(dǎo)軌式。它一般是沒有主觸點(diǎn)的，因?yàn)檫^載能力比較小。所以它用的全部都是輔助觸頭，數(shù)量比較多。按結(jié)構(gòu)形式的來說的話有電磁繼電器與靜態(tài)繼電器兩個大類：

There are two main delay modes of intermediate relay, namely power on delay and power-off delay. The installation modes are mainly divided into fixed type, protruding type, embedded type and guide rail type. It generally has no main contact, because the overload capacity is relatively small. Therefore, all auxiliary contacts are used, and the number is relatively large. According to the structure, there are two categories: electromagnetic relay and static relay:

靜態(tài)集成電路式中間繼電器，采用的是集成電路原理結(jié)構(gòu)，具有良好的抗振動，適用于各種電力繼電保護(hù)和自動控制裝置中，以增加保護(hù)和控制葫蘆的觸點(diǎn)容量和觸點(diǎn)數(shù)量。靜態(tài)式中間繼電器由電子元器件和精密小型繼電器等構(gòu)成，是電力系列中間繼電器更新?lián)Q代首選產(chǎn)品。

Static integrated circuit type intermediate relay adopts the principle structure of integrated circuit and has good anti vibration. It is suitable for various power relay protection and automatic control devices to increase the contact capacity and number of protection and control hoists. Static intermediate relay is composed of electronic components and precision small relay. It is the preferred product for the renewal of power series intermediate relay.

電磁型中間繼電器是傳統(tǒng)的老式繼電器，只要在線圈兩端加上一定的電壓，線圈中就會流過一定的電流，從而產(chǎn)生電磁效應(yīng)，銜鐵就會在電磁力吸引的作用下克服返回彈簧的拉力吸向鐵芯，從而帶動銜鐵的動觸點(diǎn)與靜觸點(diǎn)吸合。

Electromagnetic intermediate relay is a traditional old relay. As long as a certain voltage is applied at both ends of the coil, a certain current will flow through the coil, resulting in electromagnetic effect. Under the action of electromagnetic force, the armature will overcome the tension of the return spring and attract to the iron core, so as to drive the dynamic contact and static contact of the armature to pull in.

中間繼電器作用

Intermediate relay action

在工業(yè)控制線路和現(xiàn)在的家用電器控制線路中，常常會有中間繼電器存在，對于不同的控制線路，中間繼電器的作用有所不同，其在線路中的作用常見的有以下幾種。

Intermediate relays often exist in industrial control circuits and current household appliance control circuits. For different control circuits, the functions of intermediate relays are different. The common functions of intermediate relays in circuits are as follows.

中間繼電器的觸點(diǎn)具有一定的帶負(fù)荷能力，當(dāng)負(fù)載容量比較小時，可以用來替代小型接觸器使用，比如電動卷閘門和一些小家電的控制。這樣不僅可以起到控制的目的，而且可以節(jié)省空間，使電器的控制部分做得比較精致。

The contact of the intermediate relay has a certain load capacity. When the load capacity is relatively small, it can be used to replace small contactors, such as the control of electric rolling gate and some small household appliances. This can not only achieve the purpose of control, but also save space and make the control part of electrical appliances more exquisite.

在電路控制系統(tǒng)中，線路中增加一個中間繼電器，不僅不會改變控制形式、增加接點(diǎn)數(shù)量，而且便于維修。

In the circuit control system, adding an intermediate relay in the circuit will not change the control form and increase the number of contacts, but also facilitate maintenance.

中間繼電器的接點(diǎn)容量雖然不是很大，但也具有一定的帶負(fù)載能力，同時其驅(qū)動所需要的電流又很小，因此可以用中間繼電器來擴(kuò)大接點(diǎn)容量。而在控制線路中使用中間繼電器，通過中間繼電器來控制其他負(fù)載，達(dá)到擴(kuò)大控制容量的目的。

Although the contact capacity of the intermediate relay is not very large, it also has a certain load capacity, and the current required for its driving is very small. Therefore, the intermediate relay can be used to expand the contact capacity. The intermediate relay is used in the control circuit to control other loads through the intermediate relay, so as to expand the control capacity.

ABB中間繼電器價格人員提醒您，在工業(yè)控制線路中，可以將一個中間繼電器與原來的接觸器線圈并聯(lián)，用中間繼電器的常閉接點(diǎn)去控制相應(yīng)的元件，轉(zhuǎn)換一下接點(diǎn)類型，可以實(shí)現(xiàn)需要使用接觸器的常閉接點(diǎn)才能達(dá)到控制目的。

ABB intermediate relay price personnel remind you that in the industrial control circuit, an intermediate relay can be connected in parallel with the original contactor coil, and the normally closed contact of the intermediate relay can be used to control the corresponding components. By changing the contact type, the normally closed contact of the contactor can be used to achieve the control purpose.

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