Okay, let's break down the names Josef/Llj and the initials LLJ.
1. "Josef (or Joseph):" This is a male given name of Hebrew origin (????, Yosef). It is very common in many European countries (especially Slavic nations like Czech, Slovak, Slovenian, German, Polish, Hungarian) and has historical significance. It's the equivalent of the English name "Joseph".
2. "Llj:" This is likely a transliteration or a way to represent a specific sound or name, possibly from a Slavic language. It could be: "A double 'L' sound:" In some languages (like Slovenian, Serbian, Macedonian), the letter 'L' can be doubled to represent a longer or slightly different sound. "Part of a name:" It might be part of a longer first name, a surname, or even a nickname. For example, it could be the beginning of a name like "Ljubomir" (popular in Slavic countries, meaning "loving peace") or "Ljiljana" (meaning "lily"). "A specific surname:" There are surnames in Slavic countries that start with "Lj" (e.g., Ljubicic, Ljubicna).
3. "LL

相關(guān)內(nèi)容：

一、核心優(yōu)勢(shì)

LLJ-400FG是JOSEF約瑟品牌推出的高性能漏電繼電器，專(zhuān)為高可靠性漏電保護(hù)場(chǎng)景設(shè)計(jì)，廣泛應(yīng)用于城市石化、礦山工廠(chǎng)等對(duì)安全要求嚴(yán)苛的工業(yè)領(lǐng)域。其核心優(yōu)勢(shì)包括：

1. 高返回系數(shù)與無(wú)抖動(dòng)設(shè)計(jì)返回系數(shù)（繼電器釋放值與動(dòng)作值之比）高，確保在漏電電流消除后迅速?gòu)?fù)位，避免誤動(dòng)作。無(wú)抖動(dòng)特性消除觸點(diǎn)反復(fù)通斷的風(fēng)險(xiǎn)，延長(zhǎng)設(shè)備壽命，提升系統(tǒng)穩(wěn)定性。
2. 快速響應(yīng)與精準(zhǔn)保護(hù)動(dòng)作時(shí)間范圍0.1~2秒，可快速切斷故障電路，防止電氣火災(zāi)或人身觸電事故。動(dòng)作電流范圍50~500mA，支持分檔可調(diào)，適應(yīng)不同線(xiàn)路的漏電保護(hù)需求。
3. 靈活安裝與兼容性支持柜內(nèi)導(dǎo)軌安裝或嵌入面板安裝，節(jié)省空間且便于維護(hù)。零序電流互感器孔徑Φ100mm，兼容多種規(guī)格電纜，簡(jiǎn)化現(xiàn)場(chǎng)部署。

二、技術(shù)參數(shù)與性能指標(biāo)

三、工作原理與保護(hù)機(jī)制

LLJ-400FG基于電流平衡與差動(dòng)保護(hù)原理工作：

1. 正常狀態(tài)電源進(jìn)線(xiàn)電流與出線(xiàn)電流平衡，零序電流互感器檢測(cè)不到漏電信號(hào)，繼電器保持靜默。
2. 漏電故障時(shí)漏電電流導(dǎo)致進(jìn)線(xiàn)與出線(xiàn)電流失衡，零序互感器輸出感應(yīng)信號(hào)。電子線(xiàn)路放大信號(hào)并判斷是否超過(guò)整定值，若超限則觸發(fā)可控硅導(dǎo)通。繼電器動(dòng)作，通過(guò)常開(kāi)/常閉觸點(diǎn)控制斷路器或接觸器斷開(kāi)，切除故障線(xiàn)路。
3. 延時(shí)保護(hù)功能（可選）延時(shí)型型號(hào)支持多級(jí)保護(hù)配合，避免上級(jí)與下級(jí)保護(hù)裝置誤動(dòng)作，提升系統(tǒng)選擇性。

LLJ-300FT漏電繼電器

LLJ-250FTS漏電繼電器

LLJ-320FTS漏電繼電器

LLJ-1000FG Φ120 漏電繼電器

LLJ-400FG漏電繼電器

LLJ-15FG漏電繼電器

LLJ-63FG漏電繼電器

LLJ-120FG

LLJ-100FG

LLJ-200FG漏電繼電器

LLJ-250FG漏電繼電器

LLJ-400FG漏電繼電器

LLJ-500FG漏電繼電器

LLJ-320FG漏電繼電器

LLJ-630FG漏電繼電器