濟南機箱機柜里的時間繼電器，符號該怎么看？

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

　　在濟南機箱機柜生產的各類電氣設備中，時間繼電器是個不起眼卻很關鍵的部件，它能精準控制電路的延時通斷，保障設備有序運行。但不少電力運維人員或采購濟南機箱機柜的企業負責人，面對電氣圖紙上的時間繼電器符號時，總會感到困惑：這些符號到底代表啥意思？其實時間繼電器主要分為通電延時和斷電延時兩種，它們的符號有明確區別，看懂這兩種符號的特征，就能輕松分辨類型。今天就專門圍繞濟南機箱機柜中的時間繼電器，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間繼電器的作用，方便理解符號識別的意義。在濟南機箱機柜的高壓柜、控制柜等設備中，很多電路操作需要“延時執行”，比如設備啟動時，要先讓輔助電路工作一段時間，再接通主電路；或者設備停機時，要延遲斷開某些保護電路。時間繼電器就是實現這種延時功能的核心部件，而它的符號則是電氣圖紙上的“身份標識”，能直接告訴我們它是哪種延時類型，方便運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.

　　種是通電延時型時間繼電器，它的符號有個很明顯的特征——符號內部是“又又”的樣式，而且在符號后面還會帶有“延時閉合”的標識。大家可以這么記：“又又”的樣式就像延時功能的“專屬標記”，看到這個標記再加上延時閉合標識，就能確定是通電延時型。它的工作邏輯也很直觀：當電路通電后，它不會立刻閉合，而是會按照預設的時間延遲一段時間，之后才完成閉合動作，接通后續電路。這種類型在濟南機箱機柜的設備啟動控制中很常用，能避免多個部件同時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.

　　第二種是斷電延時型時間繼電器，它的符號和通電延時型有明顯區別，很好區分。符號內部是實心的，不再是“又又”的樣式；其次，它的整體畫法和通電延時型是反過來的，從圖紙上能直接看出方向差異。更關鍵的是，要結合它的工作特點來輔助識別：這種時間繼電器通電后不會延時，而是會瞬時閉合，只有當電路斷電之后，它才會緩慢斷開。所以它的符號也隱含著“瞬時閉合、延時斷開”的邏輯，在濟南機箱機柜的設備停機保護電路中應用廣泛，能確保設備停機后，保護功能還能持續一段時間，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，為啥要精準區分這兩種符號？對濟南機箱機柜的使用和維護來說，這直接關系到設備的正常運行和操作。如果把斷電延時型的符號當成了通電延時型，按錯誤的邏輯去檢修或調試設備，很可能導致電路控制混亂，比如設備啟動時主電路提前接通，引發部件損壞；或者停機時保護電路過早斷開，留下隱患。而且濟南本地的機箱機柜廠家，在生產設備、繪制電氣圖紙時，都會嚴格遵循電氣符號標準，所以只要掌握了這兩種符號的核心區別，不管是看圖紙還是實際維護，都能少走彎路。

　　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.

　　給濟南本地的企業和運維人員提個實用建議：在查看濟南機箱機柜的電氣圖紙時，識別時間繼電器符號可以分兩步走，步看符號內部是“又又”樣式還是實心的，第二步看符號方向和附帶的標識（延時閉合/延時斷開），兩步結合就能精準判斷類型。另外，在實際操作設備前，先根據符號確認時間繼電器的類型，再結合設備說明書了解具體的延時參數，避免誤操作。如果是采購濟南機箱機柜，也可以要求廠家在圖紙上明確標注時間繼電器的類型和符號含義，方便后續維護。

　　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.

　　總結下來，濟南機箱機柜中時間繼電器的符號識別核心很簡單：通電延時型看“又又”樣式+延時閉合標識，斷電延時型看實心內部+反向畫法，再結合各自的工作特點就能輕松區分。看懂這些符號，是正確使用和維護濟南機箱機柜電氣設備的基礎，能有效提升工作效率、避免事故。如果大家在查看濟南機箱機柜的電氣圖紙時，對時間繼電器符號還有疑問，不妨咨詢對應的機箱機柜廠家，獲取更詳細的圖紙解讀和技術指導。

　　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 濟南機箱機柜 友情奉獻.更多有關的知識請點擊  http://www.landmann.cn/   真誠的態度.為您提供為的服務.更多有關的知識我們將會陸續向大家奉獻.敬請期待.

　　This article is a friendly contribution from Jinan Chassis Cabinet For more related knowledge, please click http://www.landmann.cn/ Sincere attitude To provide you with comprehensive services We will gradually contribute more relevant knowledge to everyone Coming soon.