ASJ系列剩余電流動作繼電器 ASJ series Residual Current Action Relay

時間：2022-04-08作者：江蘇安科瑞電器制造有限公司瀏覽：276

1. 概述

Overview

在工業(yè)應(yīng)用中，剩余電流繼電器與外部剩余電流互感器結(jié)合使用以檢測和評估接地故障電流。它們也可以與保護裝置結(jié)合使用，以實現(xiàn)電路的斷開，從而實現(xiàn)對線路和人員的保護。

Residual current relay can be combined with external residual current transformer to detect and evaluate the ground fault current. They can also be combined with protective devices to realize the disconnection of circuits and the protection of lines and workers.

2.剩余電流的定義以及危害

Definition and risk of residual current

剩余電流，是指低壓配電線路中各相(含中性線)電流矢量和不為零的電流。通俗講當(dāng)用電側(cè)發(fā)生了事故,電流從帶電體通過人體流到大地,使主電路進出線中的電流I相和I中的大小不相等,此時電流的瞬時矢量合成值稱為剩余電流，俗稱漏電。

Residual current is the current vector sum of each phase (including the neutral ) in the low-voltage distribution that not be zero. Generally, when there is an accident on the power side, the current flows from the charged body to the earth through the human body,it will cause that the current phase I in the main circuit not equal to the size in phase I. At this time, the value of instantaneous current vector synthesis is called residual current, commonly known as leakage.

TN System.







3.剩余電流的危害：

Risk of residual current:

人身觸電。當(dāng)電氣設(shè)備因絕緣損壞而使外殼帶電，而工作人員又接觸此外殼時，就會導(dǎo)致人身觸電事故。

（1）Physical electric shock. When shell of the electrical equipment is electrified due to insulation damage, and the workers touch the shell again, it will lead to physical electric shock accident.

燒損電氣設(shè)備，引起火災(zāi)。長期存在的漏電電流，尤其是兩相經(jīng)過電阻接地的漏電電流，在通過設(shè)備絕緣損壞處時將散發(fā)出大量的熱，使絕緣進一步損壞，甚至使可燃性材料（如非阻燃性橡套電纜）著火燃燒。

Burn electrical equipment and cause fire. The long-term leakage current, especially the leakage current of  two-phase grounded through resistance, will release a lot of heat when flow through the damaged part of the equipment insulation, further damaging the insulation, and even making combustible materials (such as non flame retardant rubber sheathed cable) burn on fire.

引起短路事故。據(jù)統(tǒng)計，約有30%的單相接地故障發(fā)展為短路。從而造成較大的電氣故障。長期存在的漏電電流及電火花使漏電處的絕緣進一步損壞，危及相間絕緣而造成短路。

(3) Cause short circuit accident. According to statistics, about 30% of single-phase grounded faults develop into short circuit which will give rise to heavier electrical failure. The long-term leakage current and spark further damage the insulation at the leakage point, and finally endanger the interphase insulation and cause short circuit.

引起電氣火災(zāi)事故。電網(wǎng)發(fā)生單相接地或設(shè)備發(fā)生單相碰殼時，在接地點就會產(chǎn)生電火花，若此電火花具有足夠的能量，就可能點燃易燃易爆物品。

Cause electrical fire accident. When the single-phase grounding occurs in the power grid or the single-phase collision occurs in the equipment, the electric spark will be generated at the grounding point. If the electric spark has enough energy, it may ignite flammable and explosive materials.

4.如何測剩余電流

How to measure residual current

在被測的三相導(dǎo)線路上與N線上各裝一個CT，或讓三相導(dǎo)線與N線一起穿過一個零序CT，得到三相導(dǎo)線與中性線N的電流矢量和IA*+IB*+IC*+IN*，當(dāng)沒有發(fā)生單相接地故障時，無論三相負荷平衡與否，則此矢量和為零；當(dāng)發(fā)生某一相接地故障時，故障電流中會通過保護PE及與地相關(guān)連的金屬構(gòu)件回到電源，即IA*+IB*+IC*+IN*，此時數(shù)值為接地故障電流Id。

Installing a CT on each of the three-phase conducting lines to be tested and N line or let the three-phase conductor and the n-line pass through a zero sequence CT together to get the current vector sum IA * + IB * + IC * + IN * . when there is no single-phase grounded fault, whether the three-phase load is balanced or not, the vector sum is zero; when there is a phase grounded fault, the fault current will flow through the protection PE and the metal components connected to the earth to the power supply, at this time, the value is the ground fault current Id.










5.ASJ系列剩余電流動作繼電器

ASJ series residual current operated relay

ASJ系列剩余電流動作繼電器可與低壓斷路器或低壓接觸器等組成組合式剩余電流保護裝置， 主要適用于交流 50Hz， 額定電壓 400V 及以下的 TT 和 TN 系統(tǒng)配電線路， 用來對電氣線路進行接地故障保護， 防止接地故障電流引起的設(shè)備損壞和電氣火災(zāi)事故， 也可用來對人身觸電危險提供間接接觸保護。

ASJ series residual current action relay can be combined with low voltage circuit breaker or low voltage contactor to form a combined residual current protection device.It is mainly used for TT and TN system distribution lines with AC 50Hz and rated voltage of 400V and below.It is used to protect the electrical circuit from ground faults, prevent equipment damage caused by ground fault current and electrical fire accidents, and can also be used to provide indirect contact protection against personal electric shock hazard














江蘇安科瑞電器制造有限公司專注于電瓶車充電樁,多回路電能表,多回路預(yù)付費電表,多用戶電能計量表,有源電力濾波器,直流列頭柜等

• 詞條

  詞條說明

• 能耗監(jiān)測系統(tǒng)在淼泉衛(wèi)生院項目的應(yīng)用

  1 引言隨著節(jié)能工作的深入，能源利用狀況的科學(xué)化管理手段日趨多樣。能耗管理系統(tǒng)可實時監(jiān)控辦公建筑各種能源的詳細使用情況，為辦公建筑查找能耗弱點，促進辦公建筑管理水平的提高及運營成本的降低，為節(jié)能降耗提供直觀科學(xué)的依據(jù)。淼泉衛(wèi)生院能耗管理系統(tǒng)，通過對能源的采集并管理降低能耗。2 設(shè)計依據(jù)GBT23331-2009?? 《能源管理體系要求》GB-50052-2009? 《

• 石家莊鐵道大學(xué)四方學(xué)院消防應(yīng)急照明和疏散指示系統(tǒng)的研究與應(yīng)用

  摘要：消防應(yīng)急疏散照明技術(shù)是一項受到各國重視、有多年發(fā)展歷史和涉及建筑火災(zāi)時人員生命安全的重要救生疏散技術(shù)。消防應(yīng)急燈具包括照明和標志燈具兩類。近年來，隨著照明技術(shù)的發(fā)展，高大而復(fù)雜的智能建筑日益增多，消防應(yīng)急照明法規(guī)和標準不斷健全和完善，消防應(yīng)急燈具產(chǎn)品品種不斷增多，性能不斷改進，技術(shù)水平有很大提高，得到了廣泛的應(yīng)用和發(fā)展。關(guān)鍵詞：?體育場館；應(yīng)急疏散指示照明系統(tǒng)；安科瑞；0&nb

• 多電量變送器在消防巡檢設(shè)備中的應(yīng)用消防

  摘要：本文分析多電量變送器在消防巡檢設(shè)備中的應(yīng)用，使用多電量變送器，可以給消防巡檢控制系統(tǒng)提供消防控制柜回路的電壓、電流、功率、功率因數(shù)等信息，從而為控制系統(tǒng)做出各種判斷，及時發(fā)現(xiàn)消防巡檢設(shè)備可能存在的隱患。關(guān)鍵詞：多電量變送器；消防巡檢；信號檢測0：概述??????當(dāng)前，由于消防設(shè)備長期不用造成的水泵銹蝕、銹死現(xiàn)象十分普遍，單純的靠人工

• 智能安全配電裝置在老年人建筑中的應(yīng)用

  摘要：我國每年因觸電傷亡人數(shù)非常多，大多數(shù)事故是發(fā)生在用電設(shè)備和配電裝置。在電氣事故中，無法預(yù)料和不可抗拒的事故是很少的，大量用電事故可采取切實可行措施來預(yù)防。本文通過結(jié)合老年人建筑的特點和智能安全配電裝置的功能，闡述了老年人建筑物預(yù)防觸電事故的方法。0：概述???預(yù)計至2025年，我國60歲以上老人將達到3億，占比例為21%，65歲以上老年人比例也將達到13.7%，