濟(jì)南機(jī)箱機(jī)柜里的時(shí)間繼電器，符號該怎么看？

　　How to read the symbol of the time relay in the Jinan chassis cabinet?

　　在濟(jì)南機(jī)箱機(jī)柜生產(chǎn)的各類電氣設(shè)備中，時(shí)間繼電器是個(gè)不起眼卻很關(guān)鍵的部件，它能合理控制電路的延時(shí)通斷，保障設(shè)備有序運(yùn)行。但不少電力運(yùn)維人員或采購濟(jì)南機(jī)箱機(jī)柜的企業(yè)負(fù)責(zé)人，面對電氣圖紙上的時(shí)間繼電器符號時(shí)，總會感到困惑：這些符號到底代表啥意思？其實(shí)時(shí)間繼電器主要分為通電延時(shí)和斷電延時(shí)兩種，它們的符號有明確區(qū)別，看懂這兩種符號的特征，就能輕松分辨類型。今天就專門圍繞濟(jì)南機(jī)箱機(jī)柜中的時(shí)間繼電器，給大家科普符號的識別方法。

　　In the production of various electrical equipment in Jinan chassis cabinets, the time relay is an inconspicuous but crucial component that can accurately control the delayed on-off of the circuit, ensuring the orderly operation of the equipment. But many power operation and maintenance personnel or business leaders who purchase Jinan chassis cabinets often feel confused when faced with time relay symbols on electrical drawings: what do these symbols represent? In fact, time relays are mainly divided into two types: power on delay and power-off delay, and their symbols have clear differences. By understanding the characteristics of these two symbols, it is easy to distinguish the types. Today, we will specifically focus on the time relay in the Jinan chassis cabinet and explain the method of symbol recognition to everyone.

　　先給大家簡單說說時(shí)間繼電器的作用，方便理解符號識別的意義。在濟(jì)南機(jī)箱機(jī)柜的高壓柜、控制柜等設(shè)備中，很多電路操作需要“延時(shí)執(zhí)行”，比如設(shè)備啟動時(shí)，要先讓輔助電路工作一段時(shí)間，再接通主電路；或者設(shè)備停機(jī)時(shí)，要延遲斷開某些保護(hù)電路。時(shí)間繼電器就是實(shí)現(xiàn)這種延時(shí)功能的核心部件，而它的符號則是電氣圖紙上的“身份標(biāo)識”，能直接告訴我們它是哪種延時(shí)類型，方便運(yùn)維人員判斷工作邏輯、排查故障。

　　First, let me briefly explain the function of time relays to facilitate understanding of the meaning of symbol recognition. In the high-voltage cabinets, control cabinets and other equipment of Jinan chassis cabinets, many circuit operations require "delayed execution". For example, when starting the equipment, the auxiliary circuit needs to work for a period of time before connecting the main circuit; Or when the equipment is shut down, it is necessary to delay the disconnection of certain protective circuits. The time relay is the core component that implements this delay function, and its symbol is the "identity identifier" on the electrical drawing, which can directly tell us what type of delay it is, making it convenient for operation and maintenance personnel to judge the work logic and troubleshoot.

　　第一種是通電延時(shí)型時(shí)間繼電器，它的符號有個(gè)很明顯的特征——符號內(nèi)部是“又又”的樣式，而且在符號后面還會帶有“延時(shí)閉合”的標(biāo)識。大家可以這么記：“又又”的樣式就像延時(shí)功能的“專屬標(biāo)記”，看到這個(gè)標(biāo)記再加上延時(shí)閉合標(biāo)識，就能確定是通電延時(shí)型。它的工作邏輯也很直觀：當(dāng)電路通電后，它不會立刻閉合，而是會按照預(yù)設(shè)的時(shí)間延遲一段時(shí)間，之后才完成閉合動作，接通后續(xù)電路。這種類型在濟(jì)南機(jī)箱機(jī)柜的設(shè)備啟動控制中很常用，能避免多個(gè)部件同時(shí)啟動造成的電流沖擊。

　　The first type is the power on delay type time relay, which has a very obvious feature in its symbol - the symbol has a "again and again" style inside, and there is also a "delay closure" symbol after the symbol. You can remember that the style of "again and again" is like the "exclusive mark" of the delay function. By adding the delay closure symbol to this mark, you can determine that it is a power on delay type. Its working logic is also very intuitive: when the circuit is powered on, it will not immediately close, but will delay for a predetermined period of time before completing the closing action and connecting the subsequent circuit. This type is commonly used in the equipment startup control of Jinan chassis cabinets, which can avoid the current surge caused by multiple components starting at the same time.

　　第二種是斷電延時(shí)型時(shí)間繼電器，它的符號和通電延時(shí)型有明顯區(qū)別，很好區(qū)分。首先符號內(nèi)部是實(shí)心的，不再是“又又”的樣式；其次，它的整體畫法和通電延時(shí)型是反過來的，從圖紙上能直接看出方向差異。更關(guān)鍵的是，要結(jié)合它的工作特點(diǎn)來輔助識別：這種時(shí)間繼電器通電后不會延時(shí)，而是會瞬時(shí)閉合，只有當(dāng)電路斷電之后，它才會緩慢斷開。所以它的符號也隱含著“瞬時(shí)閉合、延時(shí)斷開”的邏輯，在濟(jì)南機(jī)箱機(jī)柜的設(shè)備停機(jī)保護(hù)電路中應(yīng)用廣泛，能確保設(shè)備停機(jī)后，保護(hù)功能還能持續(xù)一段時(shí)間，避免意外故障。

　　The second type is the power-off delay type time relay, which has a distinct symbol from the power on delay type and is easy to distinguish. Firstly, the interior of the symbol is solid, no longer in the style of 'again and again'; Secondly, its overall drawing method is reversed from the power on delay type, and the directional difference can be directly seen from the drawing. More importantly, it is necessary to combine its working characteristics to assist in identification: this type of time relay will not delay when powered on, but will instantly close, and only slowly disconnect when the circuit is powered off. So its symbol also implies the logic of "instantaneous closure, delayed disconnection", which is widely used in the equipment shutdown protection circuit of Jinan chassis cabinets. It can ensure that the protection function can continue for a period of time after the equipment is shut down, avoiding unexpected failures.

　　可能有人會問，為啥要合理區(qū)分這兩種符號？對濟(jì)南機(jī)箱機(jī)柜的使用和維護(hù)來說，這直接關(guān)系到設(shè)備的正常運(yùn)行和操作安全。如果把斷電延時(shí)型的符號當(dāng)成了通電延時(shí)型，按錯(cuò)誤的邏輯去檢修或調(diào)試設(shè)備，很可能導(dǎo)致電路控制混亂，比如設(shè)備啟動時(shí)主電路提前接通，引發(fā)部件損壞；或者停機(jī)時(shí)保護(hù)電路過早斷開，留下安全隱患。而且濟(jì)南本地的機(jī)箱機(jī)柜廠家，在生產(chǎn)設(shè)備、繪制電氣圖紙時(shí)，都會嚴(yán)格遵循國家電氣符號標(biāo)準(zhǔn)，所以只要掌握了這兩種符號的核心區(qū)別，不管是看圖紙還是實(shí)際維護(hù)，大多能少走彎路。

　　Some people may ask, why do we need to accurately distinguish between these two symbols? For the use and maintenance of Jinan chassis cabinets, it is directly related to the normal operation and operational safety of the equipment. If the symbol of power-off delay type is mistaken for power on delay type and the equipment is repaired or debugged according to the wrong logic, it is likely to cause confusion in circuit control, such as the main circuit being prematurely connected when the equipment is started, causing component damage; Or protect the circuit from premature disconnection during shutdown, leaving a safety hazard. Moreover, local chassis and cabinet manufacturers in Jinan strictly follow the national electrical symbol standards when producing equipment and drawing electrical drawings. Therefore, as long as you master the core differences between these two symbols, whether it is reading drawings or actual maintenance, you can avoid detours.

　　給濟(jì)南本地的企業(yè)和運(yùn)維人員提個(gè)實(shí)用建議：在查看濟(jì)南機(jī)箱機(jī)柜的電氣圖紙時(shí)，識別時(shí)間繼電器符號可以分兩步走，第一步看符號內(nèi)部是“又又”樣式還是實(shí)心的，第二步看符號方向和附帶的標(biāo)識（延時(shí)閉合/延時(shí)斷開），兩步結(jié)合就能合理判斷類型。另外，在實(shí)際操作設(shè)備前，非常好先根據(jù)符號確認(rèn)時(shí)間繼電器的類型，再結(jié)合設(shè)備說明書了解具體的延時(shí)參數(shù)，避免誤操作。如果是采購濟(jì)南機(jī)箱機(jī)柜，也可以要求廠家在圖紙上明確標(biāo)注時(shí)間繼電器的類型和符號含義，方便后續(xù)維護(hù)。

　　A practical suggestion for local enterprises and operation and maintenance personnel in Jinan: When viewing the electrical drawings of Jinan chassis cabinets, identifying the time relay symbol can be done in two steps. The first step is to check whether the symbol inside is in a "again and again" style or solid. The second step is to check the direction of the symbol and the accompanying identification (delayed closing/delayed opening). By combining the two steps, the type can be accurately determined. In addition, before operating the equipment in practice, it is best to confirm the type of time relay based on the symbol, and then understand the specific delay parameters in conjunction with the equipment manual to avoid misoperation. If it is to purchase Jinan chassis cabinets, the manufacturer can also be required to clearly indicate the type and symbol meaning of the time relay on the drawings to facilitate subsequent maintenance.

　　總結(jié)下來，濟(jì)南機(jī)箱機(jī)柜中時(shí)間繼電器的符號識別核心很簡單：通電延時(shí)型看“又又”樣式+延時(shí)閉合標(biāo)識，斷電延時(shí)型看實(shí)心內(nèi)部+反向畫法，再結(jié)合各自的工作特點(diǎn)就能輕松區(qū)分。看懂這些符號，是正確使用和維護(hù)濟(jì)南機(jī)箱機(jī)柜電氣設(shè)備的基礎(chǔ)，能有效提升工作效率、避免安全事故。如果大家在查看濟(jì)南機(jī)箱機(jī)柜的電氣圖紙時(shí)，對時(shí)間繼電器符號還有疑問，不妨咨詢對應(yīng)的機(jī)箱機(jī)柜廠家，獲取更詳細(xì)的圖紙解讀和技術(shù)指導(dǎo)。

　　In summary, the symbol recognition core of time relays in Jinan chassis cabinets is very simple: for the power on delay type, look at the "again and again" style+delay closure identification; for the power-off delay type, look at the solid interior+reverse drawing method. Combined with their respective working characteristics, they can be easily distinguished. Understanding these symbols is the foundation for correctly using and maintaining electrical equipment in Jinan chassis cabinets, which can effectively improve work efficiency and avoid safety accidents. If you have any questions about the time relay symbol when viewing the electrical drawings of the Jinan chassis cabinet, you may consult the corresponding chassis cabinet manufacturer for more detailed drawing interpretation and technical guidance.

　　本文由 濟(jì)南機(jī)箱機(jī)柜 友情奉獻(xiàn).更多有關(guān)的知識請點(diǎn)擊  http://www.bjzmxm.cn/   真誠的態(tài)度.為您提供為多維度的服務(wù).更多有關(guān)的知識我們將會陸續(xù)向大家奉獻(xiàn).敬請期待.

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