ABB Ext CT Iu N-4000A-E4/6NEW

　　ABB；Ext CT Iu N=4000A-E4/6NEW

　　继电器的电符号和触点形式

　　Electrical symbols and contact forms of relays

　　继电器线圈在电路中用一个长方框符号表示，如果继电器有两个线圈，就画两个并列的长方框。同时在长方框内或长方框旁标上继电器的文字符号“J”。继电器的触点有两种表示方法：一种是把它们直接画在长方框一侧，这种表示法较为直观。另一种是按照电路连接的需要，把各个触点分别画到各自的控制电路中，通常在同一继电器的触点与线圈旁分别标注上相同的文字符号，并将触点组编上号码，以示区别。继电器的触点有三种基本形式：

　　The relay coil is represented in the circuit with a rectangular box symbol, and if the relay has two coils, it will draw two parallel rectangular frames. At the same time, the word symbol "J" of the relay is labeled beside the rectangular box or the rectangle frame. There are two means of representation for the contact of a relay: one is to draw them directly on the side of a rectangular box, which is more intuitive. The other one is in accordance with the needs of circuit, the control circuit of individual contacts to their contacts, usually in the same relay and the coil side are the same symbols on the label, and the contact group number to show distinction. The contacts of the relay have three basic forms:

　　1.动合型（H型）线圈不通电时两触点是断开的，通电后，两个触点就闭合。以合字的拼音字头“H”表示。

　　The two contact is disconnected when the 1. coils (H type) coil is not electrified, and the two contacts are closed after electricity. It is expressed in the pinyin "H".

　　2.动断型（D型）线圈不通电时两触点是闭合的，通电后两个触点就断开。用断字的拼音字头“D”表示。

　　The two contact is closed when the 2. type (D) coil is not electrified, and the two contacts are disconnected after electricity. With the hyphenation of phonetic prefix "D" said.

　　3.转换型（Z型）这是触点组型。这种触点组共有三个触点，即中间是动触点，上下各一个静触点。线圈不通电时，动触点和其中一个静触点断开和另一个闭合，线圈通电后，动触点就移动，使原来断开的成闭合，原来闭合的成断开状态，达到转换的目的。这样的触点组称为转换触点。用“转”字的拼音字头“z”表示。

　　3. conversion type (Z type) this is the contact type. The contact group has three contacts, that is, the moving contact in the middle, and a static contact on the top and bottom. When the coil is not energized, the moving contact and one static contact are broken and another closed. After the coil is energized, the moving contact moves, so that the original disconnected is closed, and the original closed state is broken, so as to achieve the purpose of transformation. Such a contact group is called the transfer contact. The "Z" is expressed in the Pinyin head of the word "turn".